Index: ChangeLog
===================================================================
RCS file: /cvsroot/tcl/tcl/ChangeLog,v
retrieving revision 1.1453.2.437
diff -u -p -u -p -r1.1453.2.437 ChangeLog
--- ChangeLog	11 May 2005 00:47:58 -0000	1.1453.2.437
+++ ChangeLog	14 May 2005 19:15:49 -0000
@@ -1,3 +1,34 @@
+2005-05-14  Daniel Steffen  <das@users.sourceforge.net>
+
+	* macosx/tclMacOSXBundle.c:
+	* unix/tclUnixInit.c: 
+	* unix/tcl.m4 (Darwin): made use of CoreFoundation API configurable
+	and added test of CoreFoundation availablility to allow building on
+	ppc64, replaced HAVE_CFBUNDLE by HAVE_COREFOUNDATION; test for
+	availability of Tiger or later OSSpinLockLock API.
+
+	* unix/tclUnixNotfy.c:
+	* unix/Makefile.in:
+	* macosx/tclMacOSXNotify.c (new file): when CoreFoundation is
+	available, use new CFRunLoop based notifier: allows easy integration
+	with other event loops on Mac OS X, in particular the TkAqua Carbon
+	event loop is now integrated via a standard tcl event source (instead
+	of TkAqua upon loading having to finalize the exsting notifier and 
+	replace it with its custom version). [Patch 1202052]
+
+	* tests/unixNotfy.test: don't run unthreaded tests on Darwin
+	since notifier may be using threads even in unthreaded core.
+
+	* unix/tclUnixPort.h:
+	* unix/tcl.m4 (Darwin): test for thread-unsafe realpath durning
+	configure, as Darwin 7 and later realpath is threadsafe.
+
+	* macosx/tclMacOSXBundle.c:
+	* unix/tclLoadDyld.c:
+	* unix/tclUnixInit.c: fixed gcc 4.0 warnings.
+
+	* unix/configure: autoconf-2.13
+
 2005-05-10  Jeff Hobbs  <jeffh@ActiveState.com>
 
 	* tests/string.test: string-10.[21-30]
Index: macosx/tclMacOSXBundle.c
===================================================================
RCS file: /cvsroot/tcl/tcl/macosx/tclMacOSXBundle.c,v
retrieving revision 1.3.2.3
diff -u -p -u -p -r1.3.2.3 tclMacOSXBundle.c
--- macosx/tclMacOSXBundle.c	20 Jul 2004 05:37:45 -0000	1.3.2.3
+++ macosx/tclMacOSXBundle.c	14 May 2005 19:15:49 -0000
@@ -51,8 +51,11 @@
  *      license.
  */
 
+#ifdef HAVE_COREFOUNDATION
 #include <CoreFoundation/CoreFoundation.h>
 #include <mach-o/dyld.h>
+#endif /* HAVE_COREFOUNDATION */
+
 #include "tcl.h"
 
 /*
@@ -119,6 +122,7 @@ Tcl_MacOSXOpenVersionedBundleResources(
     int         maxPathLen,
     char       *libraryPath)
 {
+#ifdef HAVE_COREFOUNDATION
     CFBundleRef bundleRef;
     CFStringRef bundleNameRef;
     CFURLRef libURL;
@@ -199,7 +203,7 @@ Tcl_MacOSXOpenVersionedBundleResources(
 	     */
 
 	    CFURLGetFileSystemRepresentation(libURL, TRUE,
-		    libraryPath, maxPathLen);
+		    (unsigned char*) libraryPath, maxPathLen);
 	    CFRelease(libURL);
 	}
     }
@@ -209,4 +213,7 @@ Tcl_MacOSXOpenVersionedBundleResources(
     } else {
 	return TCL_ERROR;
     }
+#else  /* HAVE_COREFOUNDATION */
+    return TCL_ERROR;
+#endif /* HAVE_COREFOUNDATION */
 }
Index: macosx/tclMacOSXNotify.c
===================================================================
RCS file: macosx/tclMacOSXNotify.c
diff -N macosx/tclMacOSXNotify.c
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ macosx/tclMacOSXNotify.c	14 May 2005 19:15:50 -0000
@@ -0,0 +1,1030 @@
+/*
+ * tclMacOSXNotify.c --
+ *
+ *	This file contains the implementation of a merged 
+ *	CFRunLoop/select-based notifier, which is the lowest-level part 
+ *	of the Tcl event loop.  This file works together with
+ *	generic/tclNotify.c.
+ *
+ * Copyright (c) 1995-1997 Sun Microsystems, Inc.
+ * Copyright 2001, Apple Computer, Inc.
+ * Copyright 2005, Tcl Core Team.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ *
+ * RCS: @(#) $Id$
+ */
+
+#ifdef HAVE_COREFOUNDATION /* Traditional unix select-based notifier
+                            * is in tclUnixNotfy.c */ 
+#include "tclInt.h"
+#include "tclPort.h"
+#include <CoreFoundation/CoreFoundation.h>
+#include <pthread.h>
+
+extern TclStubs tclStubs;
+extern Tcl_NotifierProcs tclOriginalNotifier;
+
+/*
+ * This structure is used to keep track of the notifier info for a 
+ * a registered file.
+ */
+
+typedef struct FileHandler {
+    int fd;
+    int mask;			/* Mask of desired events: TCL_READABLE,
+				 * etc. */
+    int readyMask;		/* Mask of events that have been seen since the
+				 * last time file handlers were invoked for
+				 * this file. */
+    Tcl_FileProc *proc;		/* Procedure to call, in the style of
+				 * Tcl_CreateFileHandler. */
+    ClientData clientData;	/* Argument to pass to proc. */
+    struct FileHandler *nextPtr;/* Next in list of all files we care about. */
+} FileHandler;
+
+/*
+ * The following structure is what is added to the Tcl event queue when
+ * file handlers are ready to fire.
+ */
+
+typedef struct FileHandlerEvent {
+    Tcl_Event header;		/* Information that is standard for
+				 * all events. */
+    int fd;			/* File descriptor that is ready.  Used
+				 * to find the FileHandler structure for
+				 * the file (can't point directly to the
+				 * FileHandler structure because it could
+				 * go away while the event is queued). */
+} FileHandlerEvent;
+
+/*
+ *
+ * The following structure contains a set of select() masks to track
+ * readable, writable, and exceptional conditions.
+ */
+
+typedef struct SelectMasks {
+    fd_set readable;
+    fd_set writable;
+    fd_set exceptional;
+} SelectMasks;
+
+/*
+ * The following static structure contains the state information for the
+ * select based implementation of the Tcl notifier.  One of these structures
+ * is created for each thread that is using the notifier.  
+ */
+
+typedef struct ThreadSpecificData {
+    FileHandler *firstFileHandlerPtr;
+				/* Pointer to head of file handler list. */
+
+    SelectMasks checkMasks;	/* This structure is used to build up the masks
+				 * to be used in the next call to select.
+				 * Bits are set in response to calls to
+				 * Tcl_CreateFileHandler. */
+    SelectMasks readyMasks;	/* This array reflects the readable/writable
+				 * conditions that were found to exist by the
+				 * last call to select. */
+    int numFdBits;		/* Number of valid bits in checkMasks
+				 * (one more than highest fd for which
+				 * Tcl_WatchFile has been called). */
+    int onList;			/* True if it is in this list */
+    unsigned int pollState;	/* pollState is used to implement a polling 
+				 * handshake between each thread and the
+				 * notifier thread. Bits defined below. */
+    struct ThreadSpecificData *nextPtr, *prevPtr;
+				/* All threads that are currently waiting on 
+				 * an event have their ThreadSpecificData
+				 * structure on a doubly-linked listed formed
+				 * from these pointers.  You must hold the
+				 * notifierLock before accessing these
+				 * fields. */
+    CFRunLoopSourceRef runLoopSource;
+                                /* Any other thread alerts a notifier
+				 * that an event is ready to be processed
+				 * by signaling this CFRunLoopSource. */
+    CFRunLoopRef runLoop;       /* This thread's CFRunLoop, needs to be woken
+                                 * up whenever the runLoopSource is signaled. */
+    int eventReady;		/* True if an event is ready to be processed. */
+} ThreadSpecificData;
+
+static Tcl_ThreadDataKey dataKey;
+
+/*
+ * The following static indicates the number of threads that have
+ * initialized notifiers.
+ *
+ * You must hold the notifierInitLock before accessing this variable.
+ */
+
+static int notifierCount = 0;
+
+/*
+ * The following variable points to the head of a doubly-linked list of 
+ * of ThreadSpecificData structures for all threads that are currently
+ * waiting on an event.
+ *
+ * You must hold the notifierLock before accessing this list.
+ */
+
+static ThreadSpecificData *waitingListPtr = NULL;
+
+/*
+ * The notifier thread spends all its time in select() waiting for a
+ * file descriptor associated with one of the threads on the waitingListPtr
+ * list to do something interesting.  But if the contents of the
+ * waitingListPtr list ever changes, we need to wake up and restart
+ * the select() system call.  You can wake up the notifier thread by
+ * writing a single byte to the file descriptor defined below.  This
+ * file descriptor is the input-end of a pipe and the notifier thread is
+ * listening for data on the output-end of the same pipe.  Hence writing
+ * to this file descriptor will cause the select() system call to return
+ * and wake up the notifier thread.
+ *
+ * You must hold the notifierLock lock before writing to the pipe.
+ */
+
+static int triggerPipe = -1;
+static int receivePipe = -1; /* Output end of triggerPipe */
+
+/*
+ * We use Darwin-native spinlocks instead of pthread mutexes for notifier
+ * locking: this radically simplifies the implementation and lowers
+ * overhead. Note that these are not pure spinlocks, they employ various
+ * strategies to back off, making them immune to most priority-inversion
+ * livelocks (c.f. man 3 OSSpinLockLock).
+ */
+
+#if defined(HAVE_LIBKERN_OSATOMIC_H) && defined(HAVE_OSSPINLOCKLOCK)
+/* Use OSSpinLock API where available (Tiger or later) */
+#include <libkern/OSAtomic.h>
+#else
+/* Otherwise, use commpage spinlock SPI directly */
+typedef uint32_t OSSpinLock;
+extern void _spin_lock(OSSpinLock *lock);
+extern void _spin_unlock(OSSpinLock *lock);
+#define OSSpinLockLock(p) _spin_lock(p)
+#define OSSpinLockUnlock(p) _spin_unlock(p)
+#endif
+
+/*
+ * These spinlocks lock access to the global notifier state. 
+ */
+
+static OSSpinLock notifierInitLock = 0;
+static OSSpinLock notifierLock = 0;
+
+/* 
+ * Macros abstracting notifier locking/unlocking
+ */
+
+#define LOCK_NOTIFIER_INIT   OSSpinLockLock(&notifierInitLock)
+#define UNLOCK_NOTIFIER_INIT OSSpinLockUnlock(&notifierInitLock)
+#define LOCK_NOTIFIER        OSSpinLockLock(&notifierLock)
+#define UNLOCK_NOTIFIER      OSSpinLockUnlock(&notifierLock)
+
+/*
+ * The pollState bits
+ *	POLL_WANT is set by each thread before it waits on its condition
+ *		variable.  It is checked by the notifier before it does
+ *		select.
+ *	POLL_DONE is set by the notifier if it goes into select after
+ *		seeing POLL_WANT.  The idea is to ensure it tries a select
+ *		with the same bits the initial thread had set.
+ */
+#define POLL_WANT	0x1
+#define POLL_DONE	0x2
+
+/*
+ * This is the thread ID of the notifier thread that does select.
+ */
+static pthread_t notifierThread;
+
+/*
+ * Static routines defined in this file.
+ */
+
+static void	NotifierThreadProc(ClientData clientData);
+static int	FileHandlerEventProc(Tcl_Event *evPtr, int flags);
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_InitNotifier --
+ *
+ *	Initializes the platform specific notifier state.
+ *
+ * Results:
+ *	Returns a handle to the notifier state for this thread..
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+ClientData
+Tcl_InitNotifier()
+{
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+
+    tsdPtr->eventReady = 0;
+    
+     /*
+     * Initialize CFRunLoopSource and add it to CFRunLoop of this thread
+     */
+    
+    if (!tsdPtr->runLoop) {
+        CFRunLoopRef runLoop = CFRunLoopGetCurrent();
+        CFRunLoopSourceRef runLoopSource;
+        CFRunLoopSourceContext runLoopSourceContext;
+        
+        bzero(&runLoopSourceContext, sizeof(CFRunLoopSourceContext));
+        runLoopSourceContext.info = tsdPtr;
+        runLoopSource = CFRunLoopSourceCreate(NULL, 0, &runLoopSourceContext);
+        if (!runLoopSource) {
+            Tcl_Panic("Tcl_InitNotifier: could not create CFRunLoopSource.");
+        }
+        CFRunLoopAddSource(runLoop, runLoopSource, kCFRunLoopCommonModes);
+        CFRelease(runLoopSource);
+        tsdPtr->runLoopSource = runLoopSource;
+        tsdPtr->runLoop = runLoop;
+    }
+
+    /*
+     * Initialize trigger pipe and start the Notifier thread if necessary.
+     */
+
+    LOCK_NOTIFIER_INIT;
+    if (notifierCount == 0) {
+        int fds[2], status, result;
+        pthread_attr_t attr;
+    
+        if (pipe(fds) != 0) {
+            Tcl_Panic("Tcl_InitNotifier: could not create trigger pipe.");
+        }
+        
+        status = fcntl(fds[0], F_GETFL);
+        status |= O_NONBLOCK;
+        if (fcntl(fds[0], F_SETFL, status) < 0) {
+            Tcl_Panic("Tcl_InitNotifier: could not make receive pipe non blocking.");
+        }
+        status = fcntl(fds[1], F_GETFL);
+        status |= O_NONBLOCK;
+        if (fcntl(fds[1], F_SETFL, status) < 0) {
+            Tcl_Panic("Tcl_InitNotifier: could not make trigger pipe non blocking.");
+        }
+
+        receivePipe = fds[0];
+        triggerPipe = fds[1];
+
+        pthread_attr_init(&attr);
+        pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM);
+        pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE);
+        pthread_attr_setstacksize(&attr, 60 * 1024);
+        result = pthread_create(&notifierThread, &attr, (void * (*)(void *))NotifierThreadProc, NULL);
+        pthread_attr_destroy(&attr);
+	if (result) {
+	    Tcl_Panic("Tcl_InitNotifier: unable to start notifier thread.");
+	}
+    }
+    notifierCount++;
+    UNLOCK_NOTIFIER_INIT;
+    
+    return (ClientData) tsdPtr;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_FinalizeNotifier --
+ *
+ *	This function is called to cleanup the notifier state before
+ *	a thread is terminated.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	May terminate the background notifier thread if this is the
+ *	last notifier instance.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_FinalizeNotifier(clientData)
+    ClientData clientData;		/* Not used. */
+{
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+
+    LOCK_NOTIFIER_INIT;
+    notifierCount--;
+
+    /*
+     * If this is the last thread to use the notifier, close the notifier
+     * pipe and wait for the background thread to terminate.
+     */
+
+    if (notifierCount == 0) {
+        int result;
+        
+	if (triggerPipe < 0) {
+	    Tcl_Panic("Tcl_FinalizeNotifier: notifier pipe not initialized.");
+	}
+
+	/*
+	 * Send "q" message to the notifier thread so that it will
+	 * terminate.  The notifier will return from its call to select()
+	 * and notice that a "q" message has arrived, it will then close
+	 * its side of the pipe and terminate its thread.  Note the we can
+	 * not just close the pipe and check for EOF in the notifier
+	 * thread because if a background child process was created with
+	 * exec, select() would not register the EOF on the pipe until the
+	 * child processes had terminated. [Bug: 4139]
+	 */
+	write(triggerPipe, "q", 1);
+	close(triggerPipe);
+
+	result = pthread_join(notifierThread, NULL); 
+	if (result) {
+	    Tcl_Panic("Tcl_FinalizeNotifier: unable to join notifier thread.");
+	}
+	
+	close(receivePipe);
+        triggerPipe = -1;
+    }
+    UNLOCK_NOTIFIER_INIT;
+    
+    LOCK_NOTIFIER; /* for concurrency with Tcl_AlertNotifier */
+    if (tsdPtr->runLoop) {
+        tsdPtr->runLoop = NULL;
+        /* Remove runLoopSource from all CFRunLoops and release it */
+        CFRunLoopSourceInvalidate(tsdPtr->runLoopSource);
+        tsdPtr->runLoopSource = NULL;
+    }
+    UNLOCK_NOTIFIER;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_AlertNotifier --
+ *
+ *	Wake up the specified notifier from any thread. This routine
+ *	is called by the platform independent notifier code whenever
+ *	the Tcl_ThreadAlert routine is called.  This routine is
+ *	guaranteed not to be called on a given notifier after
+ *	Tcl_FinalizeNotifier is called for that notifier.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Signals the notifier condition variable for the specified
+ *	notifier.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_AlertNotifier(clientData)
+    ClientData clientData;
+{
+    ThreadSpecificData *tsdPtr = (ThreadSpecificData *) clientData;
+    LOCK_NOTIFIER;
+    if (tsdPtr->runLoop) {
+        tsdPtr->eventReady = 1;
+        CFRunLoopSourceSignal(tsdPtr->runLoopSource);
+        CFRunLoopWakeUp(tsdPtr->runLoop);
+    }
+    UNLOCK_NOTIFIER;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_SetTimer --
+ *
+ *	This procedure sets the current notifier timer value.  This
+ *	interface is not implemented in this notifier because we are
+ *	always running inside of Tcl_DoOneEvent.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_SetTimer(timePtr)
+    Tcl_Time *timePtr;		/* Timeout value, may be NULL. */
+{
+    /*
+     * The interval timer doesn't do anything in this implementation,
+     * because the only event loop is via Tcl_DoOneEvent, which passes
+     * timeout values to Tcl_WaitForEvent.
+     */
+
+    if (tclStubs.tcl_SetTimer != tclOriginalNotifier.setTimerProc) {
+	tclStubs.tcl_SetTimer(timePtr);
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_ServiceModeHook --
+ *
+ *	This function is invoked whenever the service mode changes.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_ServiceModeHook(mode)
+    int mode;			/* Either TCL_SERVICE_ALL, or
+				 * TCL_SERVICE_NONE. */
+{
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_CreateFileHandler --
+ *
+ *	This procedure registers a file handler with the select notifier.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Creates a new file handler structure.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_CreateFileHandler(fd, mask, proc, clientData)
+    int fd;			/* Handle of stream to watch. */
+    int mask;			/* OR'ed combination of TCL_READABLE,
+				 * TCL_WRITABLE, and TCL_EXCEPTION:
+				 * indicates conditions under which
+				 * proc should be called. */
+    Tcl_FileProc *proc;		/* Procedure to call for each
+				 * selected event. */
+    ClientData clientData;	/* Arbitrary data to pass to proc. */
+{
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+    FileHandler *filePtr;
+
+    if (tclStubs.tcl_CreateFileHandler != tclOriginalNotifier.createFileHandlerProc) {
+	tclStubs.tcl_CreateFileHandler(fd, mask, proc, clientData);
+	return;
+    }
+
+    for (filePtr = tsdPtr->firstFileHandlerPtr; filePtr != NULL;
+	    filePtr = filePtr->nextPtr) {
+	if (filePtr->fd == fd) {
+	    break;
+	}
+    }
+    if (filePtr == NULL) {
+	filePtr = (FileHandler*) ckalloc(sizeof(FileHandler));
+	filePtr->fd = fd;
+	filePtr->readyMask = 0;
+	filePtr->nextPtr = tsdPtr->firstFileHandlerPtr;
+	tsdPtr->firstFileHandlerPtr = filePtr;
+    }
+    filePtr->proc = proc;
+    filePtr->clientData = clientData;
+    filePtr->mask = mask;
+
+    /*
+     * Update the check masks for this file.
+     */
+
+    if (mask & TCL_READABLE) {
+	FD_SET(fd, &(tsdPtr->checkMasks.readable));
+    } else {
+	FD_CLR(fd, &(tsdPtr->checkMasks.readable));
+    }
+    if (mask & TCL_WRITABLE) {
+	FD_SET(fd, &(tsdPtr->checkMasks.writable));
+    } else {
+	FD_CLR(fd, &(tsdPtr->checkMasks.writable));
+    }
+    if (mask & TCL_EXCEPTION) {
+	FD_SET(fd, &(tsdPtr->checkMasks.exceptional));
+    } else {
+	FD_CLR(fd, &(tsdPtr->checkMasks.exceptional));
+    }
+    if (tsdPtr->numFdBits <= fd) {
+	tsdPtr->numFdBits = fd+1;
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_DeleteFileHandler --
+ *
+ *	Cancel a previously-arranged callback arrangement for
+ *	a file.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	If a callback was previously registered on file, remove it.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_DeleteFileHandler(fd)
+    int fd;		/* Stream id for which to remove callback procedure. */
+{
+    FileHandler *filePtr, *prevPtr;
+    int i;
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+
+    if (tclStubs.tcl_DeleteFileHandler != tclOriginalNotifier.deleteFileHandlerProc) {
+	tclStubs.tcl_DeleteFileHandler(fd);
+	return;
+    }
+
+    /*
+     * Find the entry for the given file (and return if there isn't one).
+     */
+
+    for (prevPtr = NULL, filePtr = tsdPtr->firstFileHandlerPtr; ;
+	 prevPtr = filePtr, filePtr = filePtr->nextPtr) {
+	if (filePtr == NULL) {
+	    return;
+	}
+	if (filePtr->fd == fd) {
+	    break;
+	}
+    }
+
+    /*
+     * Update the check masks for this file.
+     */
+
+    if (filePtr->mask & TCL_READABLE) {
+	FD_CLR(fd, &(tsdPtr->checkMasks.readable));
+    }
+    if (filePtr->mask & TCL_WRITABLE) {
+	FD_CLR(fd, &(tsdPtr->checkMasks.writable));
+    }
+    if (filePtr->mask & TCL_EXCEPTION) {
+	FD_CLR(fd, &(tsdPtr->checkMasks.exceptional));
+    }
+
+    /*
+     * Find current max fd.
+     */
+
+    if (fd+1 == tsdPtr->numFdBits) {
+	tsdPtr->numFdBits = 0;
+	for (i = fd-1; i >= 0; i--) {
+	    if (FD_ISSET(i, &(tsdPtr->checkMasks.readable))
+		    || FD_ISSET(i, &(tsdPtr->checkMasks.writable))
+		    || FD_ISSET(i, &(tsdPtr->checkMasks.exceptional))) {
+		tsdPtr->numFdBits = i+1;
+		break;
+	    }
+	}
+    }
+
+    /*
+     * Clean up information in the callback record.
+     */
+
+    if (prevPtr == NULL) {
+	tsdPtr->firstFileHandlerPtr = filePtr->nextPtr;
+    } else {
+	prevPtr->nextPtr = filePtr->nextPtr;
+    }
+    ckfree((char *) filePtr);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * FileHandlerEventProc --
+ *
+ *	This procedure is called by Tcl_ServiceEvent when a file event
+ *	reaches the front of the event queue.  This procedure is
+ *	responsible for actually handling the event by invoking the
+ *	callback for the file handler.
+ *
+ * Results:
+ *	Returns 1 if the event was handled, meaning it should be removed
+ *	from the queue.  Returns 0 if the event was not handled, meaning
+ *	it should stay on the queue.  The only time the event isn't
+ *	handled is if the TCL_FILE_EVENTS flag bit isn't set.
+ *
+ * Side effects:
+ *	Whatever the file handler's callback procedure does.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+FileHandlerEventProc(evPtr, flags)
+    Tcl_Event *evPtr;		/* Event to service. */
+    int flags;			/* Flags that indicate what events to
+				 * handle, such as TCL_FILE_EVENTS. */
+{
+    int mask;
+    FileHandler *filePtr;
+    FileHandlerEvent *fileEvPtr = (FileHandlerEvent *) evPtr;
+    ThreadSpecificData *tsdPtr;
+
+    if (!(flags & TCL_FILE_EVENTS)) {
+	return 0;
+    }
+
+    /*
+     * Search through the file handlers to find the one whose handle matches
+     * the event.  We do this rather than keeping a pointer to the file
+     * handler directly in the event, so that the handler can be deleted
+     * while the event is queued without leaving a dangling pointer.
+     */
+
+    tsdPtr = TCL_TSD_INIT(&dataKey);
+    for (filePtr = tsdPtr->firstFileHandlerPtr; filePtr != NULL;
+	    filePtr = filePtr->nextPtr) {
+	if (filePtr->fd != fileEvPtr->fd) {
+	    continue;
+	}
+
+	/*
+	 * The code is tricky for two reasons:
+	 * 1. The file handler's desired events could have changed
+	 *    since the time when the event was queued, so AND the
+	 *    ready mask with the desired mask.
+	 * 2. The file could have been closed and re-opened since
+	 *    the time when the event was queued.  This is why the
+	 *    ready mask is stored in the file handler rather than
+	 *    the queued event:  it will be zeroed when a new
+	 *    file handler is created for the newly opened file.
+	 */
+
+	mask = filePtr->readyMask & filePtr->mask;
+	filePtr->readyMask = 0;
+	if (mask != 0) {
+	    (*filePtr->proc)(filePtr->clientData, mask);
+	}
+	break;
+    }
+    return 1;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_WaitForEvent --
+ *
+ *	This function is called by Tcl_DoOneEvent to wait for new
+ *	events on the message queue.  If the block time is 0, then
+ *	Tcl_WaitForEvent just polls without blocking.
+ *
+ * Results:
+ *	Returns -1 if the select would block forever, otherwise
+ *	returns 0.
+ *
+ * Side effects:
+ *	Queues file events that are detected by the select.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_WaitForEvent(timePtr)
+    Tcl_Time *timePtr;		/* Maximum block time, or NULL. */
+{
+    FileHandler *filePtr;
+    FileHandlerEvent *fileEvPtr;
+    int mask;
+    int waitForFiles;
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+
+    if (tclStubs.tcl_WaitForEvent != tclOriginalNotifier.waitForEventProc) {
+	return tclStubs.tcl_WaitForEvent(timePtr);
+    }
+
+    /*
+     * Place this thread on the list of interested threads, signal the
+     * notifier thread, and wait for a response or a timeout.
+     */
+
+    LOCK_NOTIFIER;
+
+    waitForFiles = (tsdPtr->numFdBits > 0);
+    if (timePtr != NULL && timePtr->sec == 0 && timePtr->usec == 0) {
+	/*
+	 * Cannot emulate a polling select with a polling condition variable.
+	 * Instead, pretend to wait for files and tell the notifier
+	 * thread what we are doing.  The notifier thread makes sure
+	 * it goes through select with its select mask in the same state
+	 * as ours currently is.  We block until that happens.
+	 */
+
+	waitForFiles = 1;
+	tsdPtr->pollState = POLL_WANT;
+	timePtr = NULL;
+    } else {
+	tsdPtr->pollState = 0;
+    }
+
+    if (waitForFiles) {
+	/*
+	 * Add the ThreadSpecificData structure of this thread to the list
+	 * of ThreadSpecificData structures of all threads that are waiting
+	 * on file events.
+	 */
+
+	tsdPtr->nextPtr = waitingListPtr;
+	if (waitingListPtr) {
+	    waitingListPtr->prevPtr = tsdPtr;
+	}
+	tsdPtr->prevPtr = 0;
+	waitingListPtr = tsdPtr;
+	tsdPtr->onList = 1;
+
+	write(triggerPipe, "", 1);
+    }
+
+    FD_ZERO(&(tsdPtr->readyMasks.readable));
+    FD_ZERO(&(tsdPtr->readyMasks.writable));
+    FD_ZERO(&(tsdPtr->readyMasks.exceptional));
+
+    if (!tsdPtr->eventReady) {
+        CFTimeInterval waitTime;
+
+        if (timePtr == NULL) {
+            waitTime = 1.0e10; /* Wait forever, as per CFRunLoop.c */
+        } else {
+            waitTime = timePtr->sec + 1.0e-6 * timePtr->usec;
+        }
+        UNLOCK_NOTIFIER;
+        CFRunLoopRunInMode(kCFRunLoopDefaultMode, waitTime, TRUE);
+        LOCK_NOTIFIER;
+    }
+    tsdPtr->eventReady = 0;
+
+    if (waitForFiles && tsdPtr->onList) {
+	/*
+	 * Remove the ThreadSpecificData structure of this thread from the
+	 * waiting list.  Alert the notifier thread to recompute its select
+	 * masks - skipping this caused a hang when trying to close a pipe
+	 * which the notifier thread was still doing a select on.
+	 */
+
+	if (tsdPtr->prevPtr) {
+	    tsdPtr->prevPtr->nextPtr = tsdPtr->nextPtr;
+	} else {
+	    waitingListPtr = tsdPtr->nextPtr;
+	}
+	if (tsdPtr->nextPtr) {
+	    tsdPtr->nextPtr->prevPtr = tsdPtr->prevPtr;
+	}
+	tsdPtr->nextPtr = tsdPtr->prevPtr = NULL;
+	tsdPtr->onList = 0;
+	write(triggerPipe, "", 1);
+    }
+
+    
+    /*
+     * Queue all detected file events before returning.
+     */
+
+    for (filePtr = tsdPtr->firstFileHandlerPtr; (filePtr != NULL);
+	    filePtr = filePtr->nextPtr) {
+
+	mask = 0;
+	if (FD_ISSET(filePtr->fd, &(tsdPtr->readyMasks.readable))) {
+	    mask |= TCL_READABLE;
+	}
+	if (FD_ISSET(filePtr->fd, &(tsdPtr->readyMasks.writable))) {
+	    mask |= TCL_WRITABLE;
+	}
+	if (FD_ISSET(filePtr->fd, &(tsdPtr->readyMasks.exceptional))) {
+	    mask |= TCL_EXCEPTION;
+	}
+
+	if (!mask) {
+	    continue;
+	}
+
+	/*
+	 * Don't bother to queue an event if the mask was previously
+	 * non-zero since an event must still be on the queue.
+	 */
+
+	if (filePtr->readyMask == 0) {
+	    fileEvPtr = (FileHandlerEvent *) ckalloc(sizeof(FileHandlerEvent));
+	    fileEvPtr->header.proc = FileHandlerEventProc;
+	    fileEvPtr->fd = filePtr->fd;
+	    Tcl_QueueEvent((Tcl_Event *) fileEvPtr, TCL_QUEUE_TAIL);
+	}
+	filePtr->readyMask = mask;
+    }
+    UNLOCK_NOTIFIER;
+    return 0;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * NotifierThreadProc --
+ *
+ *	This routine is the initial (and only) function executed by the
+ *	special notifier thread.  Its job is to wait for file descriptors
+ *	to become readable or writable or to have an exception condition
+ *	and then to notify other threads who are interested in this
+ *	information by signalling a condition variable.  Other threads
+ *	can signal this notifier thread of a change in their interests
+ *	by writing a single byte to a special pipe that the notifier
+ *	thread is monitoring.
+ *
+ * Result:
+ *	None.  Once started, this routine never exits.  It dies with
+ *	the overall process.
+ *
+ * Side effects:
+ *	The trigger pipe used to signal the notifier thread is created
+ *	when the notifier thread first starts.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+NotifierThreadProc(clientData)
+    ClientData clientData;	/* Not used. */
+{
+    ThreadSpecificData *tsdPtr;
+    fd_set readableMask;
+    fd_set writableMask;
+    fd_set exceptionalMask;
+    int i, numFdBits = 0;
+    long found;
+    struct timeval poll = {0., 0.}, *timePtr;
+    char buf[2];
+
+    /*
+     * Look for file events and report them to interested threads.
+     */
+
+    while (1) {
+	FD_ZERO(&readableMask);
+	FD_ZERO(&writableMask);
+	FD_ZERO(&exceptionalMask);
+
+	/*
+	 * Compute the logical OR of the select masks from all the
+	 * waiting notifiers.
+	 */
+
+	LOCK_NOTIFIER;
+	timePtr = NULL;
+	for (tsdPtr = waitingListPtr; tsdPtr; tsdPtr = tsdPtr->nextPtr) {
+	    for (i = tsdPtr->numFdBits-1; i >= 0; --i) {
+		if (FD_ISSET(i, &(tsdPtr->checkMasks.readable))) {
+		    FD_SET(i, &readableMask);
+		}
+		if (FD_ISSET(i, &(tsdPtr->checkMasks.writable))) {
+		    FD_SET(i, &writableMask);
+		}
+		if (FD_ISSET(i, &(tsdPtr->checkMasks.exceptional))) {
+		    FD_SET(i, &exceptionalMask);
+		}
+	    }
+	    if (tsdPtr->numFdBits > numFdBits) {
+		numFdBits = tsdPtr->numFdBits;
+	    }
+	    if (tsdPtr->pollState & POLL_WANT) {
+		/*
+		 * Here we make sure we go through select() with the same
+		 * mask bits that were present when the thread tried to poll.
+		 */
+
+		tsdPtr->pollState |= POLL_DONE;
+		timePtr = &poll;
+	    }
+	}
+	UNLOCK_NOTIFIER;
+
+	/*
+	 * Set up the select mask to include the receive pipe.
+	 */
+
+	if (receivePipe >= numFdBits) {
+	    numFdBits = receivePipe + 1;
+	}
+	FD_SET(receivePipe, &readableMask);
+
+	if (select(numFdBits, &readableMask, &writableMask, &exceptionalMask,
+		timePtr) == -1) {
+	    /*
+	     * Try again immediately on an error.
+	     */
+
+	    continue;
+	}
+
+	/*
+	 * Alert any threads that are waiting on a ready file descriptor.
+	 */
+
+	LOCK_NOTIFIER;
+	for (tsdPtr = waitingListPtr; tsdPtr; tsdPtr = tsdPtr->nextPtr) {
+	    found = 0;
+
+	    for (i = tsdPtr->numFdBits-1; i >= 0; --i) {
+		if (FD_ISSET(i, &(tsdPtr->checkMasks.readable))
+			&& FD_ISSET(i, &readableMask)) {
+		    FD_SET(i, &(tsdPtr->readyMasks.readable));
+		    found = 1;
+		}
+		if (FD_ISSET(i, &(tsdPtr->checkMasks.writable))
+			&& FD_ISSET(i, &writableMask)) {
+		    FD_SET(i, &(tsdPtr->readyMasks.writable));
+		    found = 1;
+		}
+		if (FD_ISSET(i, &(tsdPtr->checkMasks.exceptional))
+			&& FD_ISSET(i, &exceptionalMask)) {
+		    FD_SET(i, &(tsdPtr->readyMasks.exceptional));
+		    found = 1;
+		}
+	    }
+
+	    if (found || (tsdPtr->pollState & POLL_DONE)) {
+		tsdPtr->eventReady = 1;
+		if (tsdPtr->onList) {
+		    /*
+		     * Remove the ThreadSpecificData structure of this
+		     * thread from the waiting list. This prevents us from
+		     * continuously spining on select until the other
+		     * threads runs and services the file event.
+		     */
+
+		    if (tsdPtr->prevPtr) {
+			tsdPtr->prevPtr->nextPtr = tsdPtr->nextPtr;
+		    } else {
+			waitingListPtr = tsdPtr->nextPtr;
+		    }
+		    if (tsdPtr->nextPtr) {
+			tsdPtr->nextPtr->prevPtr = tsdPtr->prevPtr;
+		    }
+		    tsdPtr->nextPtr = tsdPtr->prevPtr = NULL;
+		    tsdPtr->onList = 0;
+		    tsdPtr->pollState = 0;
+		}
+		if (tsdPtr->runLoop) {
+		    CFRunLoopSourceSignal(tsdPtr->runLoopSource);
+		    CFRunLoopWakeUp(tsdPtr->runLoop);
+		}
+	    }
+	}
+	UNLOCK_NOTIFIER;
+
+	/*
+	 * Consume the next byte from the notifier pipe if the pipe was
+	 * readable.  Note that there may be multiple bytes pending, but
+	 * to avoid a race condition we only read one at a time.
+	 */
+
+	if (FD_ISSET(receivePipe, &readableMask)) {
+	    i = read(receivePipe, buf, 1);
+
+	    if ((i == 0) || ((i == 1) && (buf[0] == 'q'))) {
+		/*
+		 * Someone closed the write end of the pipe or sent us a
+		 * Quit message [Bug: 4139] and then closed the write end
+		 * of the pipe so we need to shut down the notifier thread.
+		 */
+
+		break;
+	    }
+	}
+    }
+    pthread_exit (0);
+}
+
+#endif /* HAVE_COREFOUNDATION */
Index: tests/unixNotfy.test
===================================================================
RCS file: /cvsroot/tcl/tcl/tests/unixNotfy.test,v
retrieving revision 1.11.2.3
diff -u -p -u -p -r1.11.2.3 unixNotfy.test
--- tests/unixNotfy.test	22 Jun 2004 11:55:36 -0000	1.11.2.3
+++ tests/unixNotfy.test	14 May 2005 19:15:50 -0000
@@ -29,13 +29,18 @@ if {[info exists tk_version]} {
 
 set ::tcltest::testConstraints(testthread) \
 	[expr {[info commands testthread] != {}}]
+# Darwin always uses a threaded notifier
+testConstraint unthreaded [expr {
+    (![info exist tcl_platform(threaded)] || !$tcl_platform(threaded))
+    && $tcl_platform(os) ne "Darwin"
+}]
 
 # The next two tests will hang if threads are enabled because the notifier
 # will not necessarily wait for ever in this case, so it does not generate
 # an error.
 
 test unixNotfy-1.1 {Tcl_DeleteFileHandler} \
-    -constraints {unixOnly && !testthread} \
+    -constraints {unixOnly && unthreaded} \
     -body {
 	catch {vwait x}
 	set f [open [makeFile "" foo] w]
@@ -51,7 +56,7 @@ test unixNotfy-1.1 {Tcl_DeleteFileHandle
     }
 
 test unixNotfy-1.2 {Tcl_DeleteFileHandler} \
-    -constraints {unixOnly && !testthread} \
+    -constraints {unixOnly && unthreaded} \
     -body {
 	catch {vwait x}
 	set f1 [open [makeFile "" foo] w]
Index: unix/Makefile.in
===================================================================
RCS file: /cvsroot/tcl/tcl/unix/Makefile.in,v
retrieving revision 1.121.2.11
diff -u -p -u -p -r1.121.2.11 Makefile.in
--- unix/Makefile.in	26 Apr 2005 00:46:02 -0000	1.121.2.11
+++ unix/Makefile.in	14 May 2005 19:15:50 -0000
@@ -318,7 +318,7 @@ GENERIC_OBJS = regcomp.o regexec.o regfr
 
 STUB_LIB_OBJS = tclStubLib.o ${COMPAT_OBJS}
 
-MAC_OSX_OBJS = tclMacOSXBundle.o
+MAC_OSX_OBJS = tclMacOSXBundle.o tclMacOSXNotify.o
 
 OBJS = ${GENERIC_OBJS} ${UNIX_OBJS} ${NOTIFY_OBJS} ${COMPAT_OBJS} \
         @DL_OBJS@ @PLAT_OBJS@
@@ -438,7 +438,8 @@ DL_SRCS = \
 	$(UNIX_DIR)/tclLoadShl.c
 
 MAC_OSX_SRCS = \
-	$(MAC_OSX_DIR)/tclMacOSXBundle.c
+	$(MAC_OSX_DIR)/tclMacOSXBundle.c \
+	$(MAC_OSX_DIR)/tclMacOSXNotify.c
 
 # Note: don't include DL_SRCS or MAC_OSX_SRCS in SRCS: most of those
 # files won't compile on the current machine, and they will cause
@@ -1035,6 +1036,9 @@ tclUnixInit.o: $(UNIX_DIR)/tclUnixInit.c
 tclMacOSXBundle.o: $(MAC_OSX_DIR)/tclMacOSXBundle.c
 	$(CC) -c $(CC_SWITCHES) $(MAC_OSX_DIR)/tclMacOSXBundle.c
 
+tclMacOSXNotify.o: $(MAC_OSX_DIR)/tclMacOSXNotify.c
+	$(CC) -c $(CC_SWITCHES) $(MAC_OSX_DIR)/tclMacOSXNotify.c
+
 # The following targets are not completely general.  They are provide
 # purely for documentation purposes so people who are interested in
 # the Xt based notifier can modify them to suit their own installation.
Index: unix/configure
===================================================================
RCS file: /cvsroot/tcl/tcl/unix/configure,v
retrieving revision 1.92.2.30
diff -u -p -u -p -r1.92.2.30 configure
--- unix/configure	7 May 2005 00:00:45 -0000	1.92.2.30
+++ unix/configure	14 May 2005 19:15:50 -0000
@@ -29,6 +29,8 @@ ac_help="$ac_help
 ac_help="$ac_help
   --enable-64bit-vis      enable 64bit Sparc VIS support"
 ac_help="$ac_help
+  --enable-corefoundation use CoreFoundation API [--enable-corefoundation]"
+ac_help="$ac_help
   --disable-load          disallow dynamic loading and "load" command"
 ac_help="$ac_help
   --enable-symbols        build with debugging symbols [--disable-symbols]"
@@ -575,7 +577,7 @@ TCL_SRC_DIR=`cd $srcdir/..; pwd`
 
 
 	echo $ac_n "checking whether to use symlinks for manpages""... $ac_c" 1>&6
-echo "configure:579: checking whether to use symlinks for manpages" >&5
+echo "configure:581: checking whether to use symlinks for manpages" >&5
 	# Check whether --enable-man-symlinks or --disable-man-symlinks was given.
 if test "${enable_man_symlinks+set}" = set; then
   enableval="$enable_man_symlinks"
@@ -587,7 +589,7 @@ fi
 	echo "$ac_t""$enableval" 1>&6
 
 	echo $ac_n "checking whether to compress the manpages""... $ac_c" 1>&6
-echo "configure:591: checking whether to compress the manpages" >&5
+echo "configure:593: checking whether to compress the manpages" >&5
 	# Check whether --enable-man-compression or --disable-man-compression was given.
 if test "${enable_man_compression+set}" = set; then
   enableval="$enable_man_compression"
@@ -600,7 +602,7 @@ fi
 	echo "$ac_t""$enableval" 1>&6
 	if test "$enableval" != "no"; then
 		echo $ac_n "checking for compressed file suffix""... $ac_c" 1>&6
-echo "configure:604: checking for compressed file suffix" >&5
+echo "configure:606: checking for compressed file suffix" >&5
 		touch TeST
 		$enableval TeST
 		Z=`ls TeST* | sed 's/^....//'`
@@ -610,7 +612,7 @@ echo "configure:604: checking for compre
 	fi
 
 	echo $ac_n "checking whether to add a package name suffix for the manpages""... $ac_c" 1>&6
-echo "configure:614: checking whether to add a package name suffix for the manpages" >&5
+echo "configure:616: checking whether to add a package name suffix for the manpages" >&5
 	# Check whether --enable-man-suffix or --disable-man-suffix was given.
 if test "${enable_man_suffix+set}" = set; then
   enableval="$enable_man_suffix"
@@ -638,7 +640,7 @@ fi
 # Extract the first word of "gcc", so it can be a program name with args.
 set dummy gcc; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:642: checking for $ac_word" >&5
+echo "configure:644: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -668,7 +670,7 @@ if test -z "$CC"; then
   # Extract the first word of "cc", so it can be a program name with args.
 set dummy cc; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:672: checking for $ac_word" >&5
+echo "configure:674: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -719,7 +721,7 @@ fi
       # Extract the first word of "cl", so it can be a program name with args.
 set dummy cl; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:723: checking for $ac_word" >&5
+echo "configure:725: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -751,7 +753,7 @@ fi
 fi
 
 echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works""... $ac_c" 1>&6
-echo "configure:755: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
+echo "configure:757: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
 
 ac_ext=c
 # CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
@@ -762,12 +764,12 @@ cross_compiling=$ac_cv_prog_cc_cross
 
 cat > conftest.$ac_ext << EOF
 
-#line 766 "configure"
+#line 768 "configure"
 #include "confdefs.h"
 
 main(){return(0);}
 EOF
-if { (eval echo configure:771: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:773: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   ac_cv_prog_cc_works=yes
   # If we can't run a trivial program, we are probably using a cross compiler.
   if (./conftest; exit) 2>/dev/null; then
@@ -793,12 +795,12 @@ if test $ac_cv_prog_cc_works = no; then
   { echo "configure: error: installation or configuration problem: C compiler cannot create executables." 1>&2; exit 1; }
 fi
 echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler""... $ac_c" 1>&6
-echo "configure:797: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
+echo "configure:799: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
 echo "$ac_t""$ac_cv_prog_cc_cross" 1>&6
 cross_compiling=$ac_cv_prog_cc_cross
 
 echo $ac_n "checking whether we are using GNU C""... $ac_c" 1>&6
-echo "configure:802: checking whether we are using GNU C" >&5
+echo "configure:804: checking whether we are using GNU C" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_gcc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -807,7 +809,7 @@ else
   yes;
 #endif
 EOF
-if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:811: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
+if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:813: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
   ac_cv_prog_gcc=yes
 else
   ac_cv_prog_gcc=no
@@ -826,7 +828,7 @@ ac_test_CFLAGS="${CFLAGS+set}"
 ac_save_CFLAGS="$CFLAGS"
 CFLAGS=
 echo $ac_n "checking whether ${CC-cc} accepts -g""... $ac_c" 1>&6
-echo "configure:830: checking whether ${CC-cc} accepts -g" >&5
+echo "configure:832: checking whether ${CC-cc} accepts -g" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_cc_g'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -864,7 +866,7 @@ fi
 
 
     echo $ac_n "checking for building with threads""... $ac_c" 1>&6
-echo "configure:868: checking for building with threads" >&5
+echo "configure:870: checking for building with threads" >&5
     # Check whether --enable-threads or --disable-threads was given.
 if test "${enable_threads+set}" = set; then
   enableval="$enable_threads"
@@ -906,7 +908,7 @@ EOF
 EOF
 
 	echo $ac_n "checking for pthread_mutex_init in -lpthread""... $ac_c" 1>&6
-echo "configure:910: checking for pthread_mutex_init in -lpthread" >&5
+echo "configure:912: checking for pthread_mutex_init in -lpthread" >&5
 ac_lib_var=`echo pthread'_'pthread_mutex_init | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -914,7 +916,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lpthread  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 918 "configure"
+#line 920 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -925,7 +927,7 @@ int main() {
 pthread_mutex_init()
 ; return 0; }
 EOF
-if { (eval echo configure:929: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:931: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -953,7 +955,7 @@ fi
 	    # pthread.h, but that will work with libpthread really doesn't
 	    # exist, like AIX 4.2.  [Bug: 4359]
 	    echo $ac_n "checking for __pthread_mutex_init in -lpthread""... $ac_c" 1>&6
-echo "configure:957: checking for __pthread_mutex_init in -lpthread" >&5
+echo "configure:959: checking for __pthread_mutex_init in -lpthread" >&5
 ac_lib_var=`echo pthread'_'__pthread_mutex_init | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -961,7 +963,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lpthread  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 965 "configure"
+#line 967 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -972,7 +974,7 @@ int main() {
 __pthread_mutex_init()
 ; return 0; }
 EOF
-if { (eval echo configure:976: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:978: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -1000,7 +1002,7 @@ fi
 	    THREADS_LIBS=" -lpthread"
 	else
 	    echo $ac_n "checking for pthread_mutex_init in -lpthreads""... $ac_c" 1>&6
-echo "configure:1004: checking for pthread_mutex_init in -lpthreads" >&5
+echo "configure:1006: checking for pthread_mutex_init in -lpthreads" >&5
 ac_lib_var=`echo pthreads'_'pthread_mutex_init | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -1008,7 +1010,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lpthreads  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 1012 "configure"
+#line 1014 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -1019,7 +1021,7 @@ int main() {
 pthread_mutex_init()
 ; return 0; }
 EOF
-if { (eval echo configure:1023: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1025: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -1045,7 +1047,7 @@ fi
 		THREADS_LIBS=" -lpthreads"
 	    else
 		echo $ac_n "checking for pthread_mutex_init in -lc""... $ac_c" 1>&6
-echo "configure:1049: checking for pthread_mutex_init in -lc" >&5
+echo "configure:1051: checking for pthread_mutex_init in -lc" >&5
 ac_lib_var=`echo c'_'pthread_mutex_init | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -1053,7 +1055,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lc  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 1057 "configure"
+#line 1059 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -1064,7 +1066,7 @@ int main() {
 pthread_mutex_init()
 ; return 0; }
 EOF
-if { (eval echo configure:1068: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1070: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -1087,7 +1089,7 @@ fi
 
 	    	if test "$tcl_ok" = "no"; then
 		    echo $ac_n "checking for pthread_mutex_init in -lc_r""... $ac_c" 1>&6
-echo "configure:1091: checking for pthread_mutex_init in -lc_r" >&5
+echo "configure:1093: checking for pthread_mutex_init in -lc_r" >&5
 ac_lib_var=`echo c_r'_'pthread_mutex_init | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -1095,7 +1097,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lc_r  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 1099 "configure"
+#line 1101 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -1106,7 +1108,7 @@ int main() {
 pthread_mutex_init()
 ; return 0; }
 EOF
-if { (eval echo configure:1110: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1112: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -1146,12 +1148,12 @@ fi
 	for ac_func in pthread_attr_setstacksize
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:1150: checking for $ac_func" >&5
+echo "configure:1152: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1155 "configure"
+#line 1157 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -1174,7 +1176,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:1178: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1180: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -1201,12 +1203,12 @@ done
 	for ac_func in pthread_atfork
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:1205: checking for $ac_func" >&5
+echo "configure:1207: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1210 "configure"
+#line 1212 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -1229,7 +1231,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:1233: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1235: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -1257,12 +1259,12 @@ done
 	for ac_func in readdir_r
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:1261: checking for $ac_func" >&5
+echo "configure:1263: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1266 "configure"
+#line 1268 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -1285,7 +1287,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:1289: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1291: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -1311,14 +1313,14 @@ done
 
 	if test "x$ac_cv_func_readdir_r" = "xyes"; then
             echo $ac_n "checking how many args readdir_r takes""... $ac_c" 1>&6
-echo "configure:1315: checking how many args readdir_r takes" >&5
+echo "configure:1317: checking how many args readdir_r takes" >&5
 	    # IRIX 5.3 has a 2 arg version of readdir_r
 	    # while other systems have a 3 arg version.
 	    if eval "test \"`echo '$''{'tcl_cv_two_arg_readdir_r'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1322 "configure"
+#line 1324 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 #include <sys/types.h>
@@ -1333,7 +1335,7 @@ int main() {
 readdir_r(NULL, NULL);
 ; return 0; }
 EOF
-if { (eval echo configure:1337: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1339: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_two_arg_readdir_r=yes
 else
@@ -1349,7 +1351,7 @@ fi
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1353 "configure"
+#line 1355 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 #include <sys/types.h>
@@ -1364,7 +1366,7 @@ int main() {
 readdir_r(NULL, NULL, NULL);
 ; return 0; }
 EOF
-if { (eval echo configure:1368: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1370: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_three_arg_readdir_r=yes
 else
@@ -1407,18 +1409,18 @@ EOF
 if test -z "$no_pipe"; then
 if test -n "$GCC"; then
   echo $ac_n "checking if the compiler understands -pipe""... $ac_c" 1>&6
-echo "configure:1411: checking if the compiler understands -pipe" >&5
+echo "configure:1413: checking if the compiler understands -pipe" >&5
   OLDCC="$CC"  
   CC="$CC -pipe"
   cat > conftest.$ac_ext <<EOF
-#line 1415 "configure"
+#line 1417 "configure"
 #include "confdefs.h"
 
 int main() {
 
 ; return 0; }
 EOF
-if { (eval echo configure:1422: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1424: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   echo "$ac_t""yes" 1>&6
 else
@@ -1437,7 +1439,7 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking how to run the C preprocessor""... $ac_c" 1>&6
-echo "configure:1441: checking how to run the C preprocessor" >&5
+echo "configure:1443: checking how to run the C preprocessor" >&5
 # On Suns, sometimes $CPP names a directory.
 if test -n "$CPP" && test -d "$CPP"; then
   CPP=
@@ -1452,13 +1454,13 @@ else
   # On the NeXT, cc -E runs the code through the compiler's parser,
   # not just through cpp.
   cat > conftest.$ac_ext <<EOF
-#line 1456 "configure"
+#line 1458 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1462: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1464: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   :
@@ -1469,13 +1471,13 @@ else
   rm -rf conftest*
   CPP="${CC-cc} -E -traditional-cpp"
   cat > conftest.$ac_ext <<EOF
-#line 1473 "configure"
+#line 1475 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1479: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1481: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   :
@@ -1486,13 +1488,13 @@ else
   rm -rf conftest*
   CPP="${CC-cc} -nologo -E"
   cat > conftest.$ac_ext <<EOF
-#line 1490 "configure"
+#line 1492 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1496: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1498: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   :
@@ -1525,12 +1527,12 @@ echo "$ac_t""$CPP" 1>&6
     #--------------------------------------------------------------------
 
     echo $ac_n "checking for sin""... $ac_c" 1>&6
-echo "configure:1529: checking for sin" >&5
+echo "configure:1531: checking for sin" >&5
 if eval "test \"`echo '$''{'ac_cv_func_sin'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1534 "configure"
+#line 1536 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char sin(); below.  */
@@ -1553,7 +1555,7 @@ sin();
 
 ; return 0; }
 EOF
-if { (eval echo configure:1557: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1559: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_sin=yes"
 else
@@ -1574,7 +1576,7 @@ MATH_LIBS="-lm"
 fi
 
     echo $ac_n "checking for main in -lieee""... $ac_c" 1>&6
-echo "configure:1578: checking for main in -lieee" >&5
+echo "configure:1580: checking for main in -lieee" >&5
 ac_lib_var=`echo ieee'_'main | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -1582,14 +1584,14 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lieee  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 1586 "configure"
+#line 1588 "configure"
 #include "confdefs.h"
 
 int main() {
 main()
 ; return 0; }
 EOF
-if { (eval echo configure:1593: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1595: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -1616,7 +1618,7 @@ fi
     #--------------------------------------------------------------------
 
     echo $ac_n "checking for main in -linet""... $ac_c" 1>&6
-echo "configure:1620: checking for main in -linet" >&5
+echo "configure:1622: checking for main in -linet" >&5
 ac_lib_var=`echo inet'_'main | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -1624,14 +1626,14 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-linet  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 1628 "configure"
+#line 1630 "configure"
 #include "confdefs.h"
 
 int main() {
 main()
 ; return 0; }
 EOF
-if { (eval echo configure:1635: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1637: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -1653,17 +1655,17 @@ fi
 
     ac_safe=`echo "net/errno.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for net/errno.h""... $ac_c" 1>&6
-echo "configure:1657: checking for net/errno.h" >&5
+echo "configure:1659: checking for net/errno.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1662 "configure"
+#line 1664 "configure"
 #include "confdefs.h"
 #include <net/errno.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1667: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1669: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -1708,12 +1710,12 @@ fi
 
     tcl_checkBoth=0
     echo $ac_n "checking for connect""... $ac_c" 1>&6
-echo "configure:1712: checking for connect" >&5
+echo "configure:1714: checking for connect" >&5
 if eval "test \"`echo '$''{'ac_cv_func_connect'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1717 "configure"
+#line 1719 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char connect(); below.  */
@@ -1736,7 +1738,7 @@ connect();
 
 ; return 0; }
 EOF
-if { (eval echo configure:1740: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1742: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_connect=yes"
 else
@@ -1758,12 +1760,12 @@ fi
 
     if test "$tcl_checkSocket" = 1; then
 	echo $ac_n "checking for setsockopt""... $ac_c" 1>&6
-echo "configure:1762: checking for setsockopt" >&5
+echo "configure:1764: checking for setsockopt" >&5
 if eval "test \"`echo '$''{'ac_cv_func_setsockopt'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1767 "configure"
+#line 1769 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char setsockopt(); below.  */
@@ -1786,7 +1788,7 @@ setsockopt();
 
 ; return 0; }
 EOF
-if { (eval echo configure:1790: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1792: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_setsockopt=yes"
 else
@@ -1804,7 +1806,7 @@ if eval "test \"`echo '$ac_cv_func_'sets
 else
   echo "$ac_t""no" 1>&6
 echo $ac_n "checking for setsockopt in -lsocket""... $ac_c" 1>&6
-echo "configure:1808: checking for setsockopt in -lsocket" >&5
+echo "configure:1810: checking for setsockopt in -lsocket" >&5
 ac_lib_var=`echo socket'_'setsockopt | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -1812,7 +1814,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lsocket  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 1816 "configure"
+#line 1818 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -1823,7 +1825,7 @@ int main() {
 setsockopt()
 ; return 0; }
 EOF
-if { (eval echo configure:1827: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1829: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -1851,12 +1853,12 @@ fi
 	tk_oldLibs=$LIBS
 	LIBS="$LIBS -lsocket -lnsl"
 	echo $ac_n "checking for accept""... $ac_c" 1>&6
-echo "configure:1855: checking for accept" >&5
+echo "configure:1857: checking for accept" >&5
 if eval "test \"`echo '$''{'ac_cv_func_accept'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1860 "configure"
+#line 1862 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char accept(); below.  */
@@ -1879,7 +1881,7 @@ accept();
 
 ; return 0; }
 EOF
-if { (eval echo configure:1883: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1885: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_accept=yes"
 else
@@ -1901,12 +1903,12 @@ fi
 
     fi
     echo $ac_n "checking for gethostbyname""... $ac_c" 1>&6
-echo "configure:1905: checking for gethostbyname" >&5
+echo "configure:1907: checking for gethostbyname" >&5
 if eval "test \"`echo '$''{'ac_cv_func_gethostbyname'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1910 "configure"
+#line 1912 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char gethostbyname(); below.  */
@@ -1929,7 +1931,7 @@ gethostbyname();
 
 ; return 0; }
 EOF
-if { (eval echo configure:1933: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1935: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_gethostbyname=yes"
 else
@@ -1947,7 +1949,7 @@ if eval "test \"`echo '$ac_cv_func_'geth
 else
   echo "$ac_t""no" 1>&6
 echo $ac_n "checking for gethostbyname in -lnsl""... $ac_c" 1>&6
-echo "configure:1951: checking for gethostbyname in -lnsl" >&5
+echo "configure:1953: checking for gethostbyname in -lnsl" >&5
 ac_lib_var=`echo nsl'_'gethostbyname | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -1955,7 +1957,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lnsl  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 1959 "configure"
+#line 1961 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -1966,7 +1968,7 @@ int main() {
 gethostbyname()
 ; return 0; }
 EOF
-if { (eval echo configure:1970: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1972: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -2003,7 +2005,7 @@ LIBS="$LIBS$THREADS_LIBS"
 
 
     echo $ac_n "checking how to build libraries""... $ac_c" 1>&6
-echo "configure:2007: checking how to build libraries" >&5
+echo "configure:2009: checking how to build libraries" >&5
     # Check whether --enable-shared or --disable-shared was given.
 if test "${enable_shared+set}" = set; then
   enableval="$enable_shared"
@@ -2042,7 +2044,7 @@ EOF
 # Extract the first word of "ranlib", so it can be a program name with args.
 set dummy ranlib; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:2046: checking for $ac_word" >&5
+echo "configure:2048: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_RANLIB'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2074,7 +2076,7 @@ fi
     # Step 0.a: Enable 64 bit support?
 
     echo $ac_n "checking if 64bit support is requested""... $ac_c" 1>&6
-echo "configure:2078: checking if 64bit support is requested" >&5
+echo "configure:2080: checking if 64bit support is requested" >&5
     # Check whether --enable-64bit or --disable-64bit was given.
 if test "${enable_64bit+set}" = set; then
   enableval="$enable_64bit"
@@ -2094,7 +2096,7 @@ fi
     # Step 0.b: Enable Solaris 64 bit VIS support?
 
     echo $ac_n "checking if 64bit Sparc VIS support is requested""... $ac_c" 1>&6
-echo "configure:2098: checking if 64bit Sparc VIS support is requested" >&5
+echo "configure:2100: checking if 64bit Sparc VIS support is requested" >&5
     # Check whether --enable-64bit-vis or --disable-64bit-vis was given.
 if test "${enable_64bit_vis+set}" = set; then
   enableval="$enable_64bit_vis"
@@ -2118,7 +2120,7 @@ fi
     # there are a few systems, like Next, where this doesn't work.
 
     echo $ac_n "checking system version (for dynamic loading)""... $ac_c" 1>&6
-echo "configure:2122: checking system version (for dynamic loading)" >&5
+echo "configure:2124: checking system version (for dynamic loading)" >&5
     if test -f /usr/lib/NextStep/software_version; then
 	system=NEXTSTEP-`awk '/3/,/3/' /usr/lib/NextStep/software_version`
     else
@@ -2144,7 +2146,7 @@ echo "configure:2122: checking system ve
     # Linux can use either -ldl or -ldld for dynamic loading.
 
     echo $ac_n "checking for dlopen in -ldl""... $ac_c" 1>&6
-echo "configure:2148: checking for dlopen in -ldl" >&5
+echo "configure:2150: checking for dlopen in -ldl" >&5
 ac_lib_var=`echo dl'_'dlopen | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -2152,7 +2154,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-ldl  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 2156 "configure"
+#line 2158 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -2163,7 +2165,7 @@ int main() {
 dlopen()
 ; return 0; }
 EOF
-if { (eval echo configure:2167: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2169: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -2211,7 +2213,7 @@ fi
     # Extract the first word of "ar", so it can be a program name with args.
 set dummy ar; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:2215: checking for $ac_word" >&5
+echo "configure:2217: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_AR'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2321,7 +2323,7 @@ fi
 	    # known GMT value.
 
 	    echo $ac_n "checking for gettimeofday in -lbsd""... $ac_c" 1>&6
-echo "configure:2325: checking for gettimeofday in -lbsd" >&5
+echo "configure:2327: checking for gettimeofday in -lbsd" >&5
 ac_lib_var=`echo bsd'_'gettimeofday | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -2329,7 +2331,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lbsd  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 2333 "configure"
+#line 2335 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -2340,7 +2342,7 @@ int main() {
 gettimeofday()
 ; return 0; }
 EOF
-if { (eval echo configure:2344: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2346: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -2383,7 +2385,7 @@ EOF
 	    # is always linked to, for compatibility.
 	    #-----------------------------------------------------------
 	    echo $ac_n "checking for inet_ntoa in -lbind""... $ac_c" 1>&6
-echo "configure:2387: checking for inet_ntoa in -lbind" >&5
+echo "configure:2389: checking for inet_ntoa in -lbind" >&5
 ac_lib_var=`echo bind'_'inet_ntoa | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -2391,7 +2393,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lbind  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 2395 "configure"
+#line 2397 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -2402,7 +2404,7 @@ int main() {
 inet_ntoa()
 ; return 0; }
 EOF
-if { (eval echo configure:2406: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2408: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -2468,7 +2470,7 @@ EOF
 
 	    SHLIB_SUFFIX=".sl"
 	    echo $ac_n "checking for shl_load in -ldld""... $ac_c" 1>&6
-echo "configure:2472: checking for shl_load in -ldld" >&5
+echo "configure:2474: checking for shl_load in -ldld" >&5
 ac_lib_var=`echo dld'_'shl_load | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -2476,7 +2478,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-ldld  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 2480 "configure"
+#line 2482 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -2487,7 +2489,7 @@ int main() {
 shl_load()
 ; return 0; }
 EOF
-if { (eval echo configure:2491: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2493: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -2555,7 +2557,7 @@ fi
 	HP-UX-*.08.*|HP-UX-*.09.*|HP-UX-*.10.*)
 	    SHLIB_SUFFIX=".sl"
 	    echo $ac_n "checking for shl_load in -ldld""... $ac_c" 1>&6
-echo "configure:2559: checking for shl_load in -ldld" >&5
+echo "configure:2561: checking for shl_load in -ldld" >&5
 ac_lib_var=`echo dld'_'shl_load | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -2563,7 +2565,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-ldld  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 2567 "configure"
+#line 2569 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -2574,7 +2576,7 @@ int main() {
 shl_load()
 ; return 0; }
 EOF
-if { (eval echo configure:2578: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2580: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -2698,17 +2700,17 @@ fi
 	    else
 		ac_safe=`echo "dld.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for dld.h""... $ac_c" 1>&6
-echo "configure:2702: checking for dld.h" >&5
+echo "configure:2704: checking for dld.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2707 "configure"
+#line 2709 "configure"
 #include "confdefs.h"
 #include <dld.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2712: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2714: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -2772,17 +2774,17 @@ EOF
 	    else
 		ac_safe=`echo "dld.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for dld.h""... $ac_c" 1>&6
-echo "configure:2776: checking for dld.h" >&5
+echo "configure:2778: checking for dld.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2781 "configure"
+#line 2783 "configure"
 #include "confdefs.h"
 #include <dld.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2786: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2788: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -2838,17 +2840,17 @@ fi
 	    # Not available on all versions:  check for include file.
 	    ac_safe=`echo "dlfcn.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for dlfcn.h""... $ac_c" 1>&6
-echo "configure:2842: checking for dlfcn.h" >&5
+echo "configure:2844: checking for dlfcn.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2847 "configure"
+#line 2849 "configure"
 #include "confdefs.h"
 #include <dlfcn.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2852: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2854: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -2875,9 +2877,9 @@ if eval "test \"`echo '$ac_cv_header_'$a
 		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
 		LD_SEARCH_FLAGS='-rpath ${LIB_RUNTIME_DIR}'
 		echo $ac_n "checking for ELF""... $ac_c" 1>&6
-echo "configure:2879: checking for ELF" >&5
+echo "configure:2881: checking for ELF" >&5
 		cat > conftest.$ac_ext <<EOF
-#line 2881 "configure"
+#line 2883 "configure"
 #include "confdefs.h"
 
 #ifdef __ELF__
@@ -2951,9 +2953,9 @@ fi
 		LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
 		SHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}\$\{DBGX\}.so.1.0'
 		echo $ac_n "checking for ELF""... $ac_c" 1>&6
-echo "configure:2955: checking for ELF" >&5
+echo "configure:2957: checking for ELF" >&5
 		cat > conftest.$ac_ext <<EOF
-#line 2957 "configure"
+#line 2959 "configure"
 #include "confdefs.h"
 
 #ifdef __ELF__
@@ -3012,7 +3014,7 @@ rm -f conftest*
 	    SHLIB_CFLAGS="-fno-common"
 	    SHLIB_LD="cc -dynamiclib \${LDFLAGS}"
 	    echo $ac_n "checking if ld accepts -single_module flag""... $ac_c" 1>&6
-echo "configure:3016: checking if ld accepts -single_module flag" >&5
+echo "configure:3018: checking if ld accepts -single_module flag" >&5
 if eval "test \"`echo '$''{'tcl_cv_ld_single_module'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -3020,14 +3022,14 @@ else
 	        hold_ldflags=$LDFLAGS
 	        LDFLAGS="$LDFLAGS -dynamiclib -Wl,-single_module"
 	        cat > conftest.$ac_ext <<EOF
-#line 3024 "configure"
+#line 3026 "configure"
 #include "confdefs.h"
 
 int main() {
 int i;
 ; return 0; }
 EOF
-if { (eval echo configure:3031: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3033: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   tcl_cv_ld_single_module=yes
 else
@@ -3050,7 +3052,7 @@ echo "$ac_t""$tcl_cv_ld_single_module" 1
 	    DL_LIBS=""
 	    LDFLAGS="$LDFLAGS -prebind"
 	    echo $ac_n "checking if ld accepts -search_paths_first flag""... $ac_c" 1>&6
-echo "configure:3054: checking if ld accepts -search_paths_first flag" >&5
+echo "configure:3056: checking if ld accepts -search_paths_first flag" >&5
 if eval "test \"`echo '$''{'tcl_cv_ld_search_paths_first'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -3058,14 +3060,14 @@ else
 	        hold_ldflags=$LDFLAGS
 	        LDFLAGS="$LDFLAGS -Wl,-search_paths_first"
 	        cat > conftest.$ac_ext <<EOF
-#line 3062 "configure"
+#line 3064 "configure"
 #include "confdefs.h"
 
 int main() {
 int i;
 ; return 0; }
 EOF
-if { (eval echo configure:3069: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3071: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   tcl_cv_ld_search_paths_first=yes
 else
@@ -3089,13 +3091,153 @@ echo "$ac_t""$tcl_cv_ld_search_paths_fir
 	    PLAT_SRCS=\$\(MAC\_OSX_SRCS\)
 	    TCL_SHLIB_LD_EXTRAS='-compatibility_version ${VERSION} -current_version ${VERSION} -install_name ${DYLIB_INSTALL_DIR}/${TCL_LIB_FILE} -seg1addr 0xa000000'
 	    TK_SHLIB_LD_EXTRAS=' -compatibility_version ${VERSION} -current_version ${VERSION} -install_name ${DYLIB_INSTALL_DIR}/${TK_LIB_FILE}  -seg1addr 0xb000000 -unexported_symbols_list $$(f=$(TCL_STUB_LIB_FILE).E && nm -gjp $(TCL_BIN_DIR)/$(TCL_STUB_LIB_FILE) | tail +3 > $$f && echo $$f)'
-	    LIBS="$LIBS -framework CoreFoundation"
-	    cat >> confdefs.h <<\EOF
-#define MAC_OSX_TCL 1
+            echo $ac_n "checking whether to use CoreFoundation""... $ac_c" 1>&6
+echo "configure:3096: checking whether to use CoreFoundation" >&5
+            # Check whether --enable-corefoundation or --disable-corefoundation was given.
+if test "${enable_corefoundation+set}" = set; then
+  enableval="$enable_corefoundation"
+  tcl_corefoundation=$enableval
+else
+  tcl_corefoundation=yes
+fi
+
+            echo "$ac_t""$tcl_corefoundation" 1>&6
+            if test $tcl_corefoundation = yes; then
+                echo $ac_n "checking for CoreFoundation.framework""... $ac_c" 1>&6
+echo "configure:3108: checking for CoreFoundation.framework" >&5
+if eval "test \"`echo '$''{'tcl_cv_lib_corefoundation'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  
+                    hold_libs=$LIBS
+                    LIBS="$LIBS -framework CoreFoundation"
+                    cat > conftest.$ac_ext <<EOF
+#line 3116 "configure"
+#include "confdefs.h"
+#include <CoreFoundation/CoreFoundation.h>
+int main() {
+CFBundleRef b = CFBundleGetMainBundle();
+; return 0; }
+EOF
+if { (eval echo configure:3123: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+  rm -rf conftest*
+  tcl_cv_lib_corefoundation=yes
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  tcl_cv_lib_corefoundation=no
+fi
+rm -f conftest*
+                    LIBS=$hold_libs
+fi
+
+echo "$ac_t""$tcl_cv_lib_corefoundation" 1>&6
+                if test $tcl_cv_lib_corefoundation = yes; then
+                    LIBS="$LIBS -framework CoreFoundation"
+                    cat >> confdefs.h <<\EOF
+#define HAVE_COREFOUNDATION 1
 EOF
 
+                fi
+	    fi
+	    for ac_hdr in libkern/OSAtomic.h
+do
+ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
+echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
+echo "configure:3149: checking for $ac_hdr" >&5
+if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 3154 "configure"
+#include "confdefs.h"
+#include <$ac_hdr>
+EOF
+ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
+{ (eval echo configure:3159: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
+if test -z "$ac_err"; then
+  rm -rf conftest*
+  eval "ac_cv_header_$ac_safe=yes"
+else
+  echo "$ac_err" >&5
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  eval "ac_cv_header_$ac_safe=no"
+fi
+rm -f conftest*
+fi
+if eval "test \"`echo '$ac_cv_header_'$ac_safe`\" = yes"; then
+  echo "$ac_t""yes" 1>&6
+    ac_tr_hdr=HAVE_`echo $ac_hdr | sed 'y%abcdefghijklmnopqrstuvwxyz./-%ABCDEFGHIJKLMNOPQRSTUVWXYZ___%'`
+  cat >> confdefs.h <<EOF
+#define $ac_tr_hdr 1
+EOF
+ 
+else
+  echo "$ac_t""no" 1>&6
+fi
+done
+
+	    for ac_func in OSSpinLockLock
+do
+echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
+echo "configure:3188: checking for $ac_func" >&5
+if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 3193 "configure"
+#include "confdefs.h"
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func(); below.  */
+#include <assert.h>
+/* Override any gcc2 internal prototype to avoid an error.  */
+/* We use char because int might match the return type of a gcc2
+    builtin and then its argument prototype would still apply.  */
+char $ac_func();
+
+int main() {
+
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+$ac_func();
+#endif
+
+; return 0; }
+EOF
+if { (eval echo configure:3216: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+  rm -rf conftest*
+  eval "ac_cv_func_$ac_func=yes"
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  eval "ac_cv_func_$ac_func=no"
+fi
+rm -f conftest*
+fi
+
+if eval "test \"`echo '$ac_cv_func_'$ac_func`\" = yes"; then
+  echo "$ac_t""yes" 1>&6
+    ac_tr_func=HAVE_`echo $ac_func | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+  cat >> confdefs.h <<EOF
+#define $ac_tr_func 1
+EOF
+ 
+else
+  echo "$ac_t""no" 1>&6
+fi
+done
+
 	    cat >> confdefs.h <<\EOF
-#define HAVE_CFBUNDLE 1
+#define MAC_OSX_TCL 1
 EOF
 
 	    cat >> confdefs.h <<\EOF
@@ -3106,6 +3248,60 @@ EOF
 #define TCL_DEFAULT_ENCODING "utf-8"
 EOF
 
+	    # prior to Darwin 7, realpath is not threadsafe, so don't
+	    # use it when threads are enabled, c.f. bug # 711232:
+	    echo $ac_n "checking for realpath""... $ac_c" 1>&6
+echo "configure:3255: checking for realpath" >&5
+if eval "test \"`echo '$''{'ac_cv_func_realpath'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 3260 "configure"
+#include "confdefs.h"
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char realpath(); below.  */
+#include <assert.h>
+/* Override any gcc2 internal prototype to avoid an error.  */
+/* We use char because int might match the return type of a gcc2
+    builtin and then its argument prototype would still apply.  */
+char realpath();
+
+int main() {
+
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_realpath) || defined (__stub___realpath)
+choke me
+#else
+realpath();
+#endif
+
+; return 0; }
+EOF
+if { (eval echo configure:3283: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+  rm -rf conftest*
+  eval "ac_cv_func_realpath=yes"
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  eval "ac_cv_func_realpath=no"
+fi
+rm -f conftest*
+fi
+
+if eval "test \"`echo '$ac_cv_func_'realpath`\" = yes"; then
+  echo "$ac_t""yes" 1>&6
+  :
+else
+  echo "$ac_t""no" 1>&6
+fi
+
+	    if test "$ac_cv_func_realpath" = yes -a "${TCL_THREADS}" = 1 \
+	            -a `uname -r | awk -F. '{print $1}'` -lt 7 ; then
+	        ac_cv_func_realpath=no
+	    fi
 	    ;;
 	NEXTSTEP-*)
 	    SHLIB_CFLAGS=""
@@ -3394,17 +3590,17 @@ EOF
 	    # that don't grok the -Bexport option.  Test that it does.
 	    hold_ldflags=$LDFLAGS
 	    echo $ac_n "checking for ld accepts -Bexport flag""... $ac_c" 1>&6
-echo "configure:3398: checking for ld accepts -Bexport flag" >&5
+echo "configure:3594: checking for ld accepts -Bexport flag" >&5
 	    LDFLAGS="$LDFLAGS -Wl,-Bexport"
 	    cat > conftest.$ac_ext <<EOF
-#line 3401 "configure"
+#line 3597 "configure"
 #include "confdefs.h"
 
 int main() {
 int i;
 ; return 0; }
 EOF
-if { (eval echo configure:3408: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3604: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   found=yes
 else
@@ -3445,9 +3641,9 @@ rm -f conftest*
 
     if test "x$DL_OBJS" = "xtclLoadAout.o" ; then
 	echo $ac_n "checking sys/exec.h""... $ac_c" 1>&6
-echo "configure:3449: checking sys/exec.h" >&5
+echo "configure:3645: checking sys/exec.h" >&5
 	cat > conftest.$ac_ext <<EOF
-#line 3451 "configure"
+#line 3647 "configure"
 #include "confdefs.h"
 #include <sys/exec.h>
 int main() {
@@ -3465,7 +3661,7 @@ int main() {
     
 ; return 0; }
 EOF
-if { (eval echo configure:3469: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3665: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_ok=usable
 else
@@ -3483,9 +3679,9 @@ EOF
 
 	else
 	    echo $ac_n "checking a.out.h""... $ac_c" 1>&6
-echo "configure:3487: checking a.out.h" >&5
+echo "configure:3683: checking a.out.h" >&5
 	    cat > conftest.$ac_ext <<EOF
-#line 3489 "configure"
+#line 3685 "configure"
 #include "confdefs.h"
 #include <a.out.h>
 int main() {
@@ -3503,7 +3699,7 @@ int main() {
 	    
 ; return 0; }
 EOF
-if { (eval echo configure:3507: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3703: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_ok=usable
 else
@@ -3521,9 +3717,9 @@ EOF
 
 	    else
 		echo $ac_n "checking sys/exec_aout.h""... $ac_c" 1>&6
-echo "configure:3525: checking sys/exec_aout.h" >&5
+echo "configure:3721: checking sys/exec_aout.h" >&5
 		cat > conftest.$ac_ext <<EOF
-#line 3527 "configure"
+#line 3723 "configure"
 #include "confdefs.h"
 #include <sys/exec_aout.h>
 int main() {
@@ -3541,7 +3737,7 @@ int main() {
 		
 ; return 0; }
 EOF
-if { (eval echo configure:3545: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3741: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_ok=usable
 else
@@ -3692,7 +3888,7 @@ fi
 
 
     echo $ac_n "checking for build with symbols""... $ac_c" 1>&6
-echo "configure:3696: checking for build with symbols" >&5
+echo "configure:3892: checking for build with symbols" >&5
     # Check whether --enable-symbols or --disable-symbols was given.
 if test "${enable_symbols+set}" = set; then
   enableval="$enable_symbols"
@@ -3753,21 +3949,21 @@ TCL_DBGX=${DBGX}
 
 
     echo $ac_n "checking for required early compiler flags""... $ac_c" 1>&6
-echo "configure:3757: checking for required early compiler flags" >&5
+echo "configure:3953: checking for required early compiler flags" >&5
     tcl_flags=""
     
     if eval "test \"`echo '$''{'tcl_cv_flag__isoc99_source'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3764 "configure"
+#line 3960 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 int main() {
 char *p = (char *)strtoll; char *q = (char *)strtoull;
 ; return 0; }
 EOF
-if { (eval echo configure:3771: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3967: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_flag__isoc99_source=no
 else
@@ -3775,7 +3971,7 @@ else
   cat conftest.$ac_ext >&5
   rm -rf conftest*
   cat > conftest.$ac_ext <<EOF
-#line 3779 "configure"
+#line 3975 "configure"
 #include "confdefs.h"
 #define _ISOC99_SOURCE 1
 #include <stdlib.h>
@@ -3783,7 +3979,7 @@ int main() {
 char *p = (char *)strtoll; char *q = (char *)strtoull;
 ; return 0; }
 EOF
-if { (eval echo configure:3787: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3983: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_flag__isoc99_source=yes
 else
@@ -3809,14 +4005,14 @@ EOF
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3813 "configure"
+#line 4009 "configure"
 #include "confdefs.h"
 #include <sys/stat.h>
 int main() {
 struct stat64 buf; int i = stat64("/", &buf);
 ; return 0; }
 EOF
-if { (eval echo configure:3820: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4016: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_flag__largefile64_source=no
 else
@@ -3824,7 +4020,7 @@ else
   cat conftest.$ac_ext >&5
   rm -rf conftest*
   cat > conftest.$ac_ext <<EOF
-#line 3828 "configure"
+#line 4024 "configure"
 #include "confdefs.h"
 #define _LARGEFILE64_SOURCE 1
 #include <sys/stat.h>
@@ -3832,7 +4028,7 @@ int main() {
 struct stat64 buf; int i = stat64("/", &buf);
 ; return 0; }
 EOF
-if { (eval echo configure:3836: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4032: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_flag__largefile64_source=yes
 else
@@ -3861,7 +4057,7 @@ EOF
 
 
     echo $ac_n "checking for 64-bit integer type""... $ac_c" 1>&6
-echo "configure:3865: checking for 64-bit integer type" >&5
+echo "configure:4061: checking for 64-bit integer type" >&5
     if eval "test \"`echo '$''{'tcl_cv_type_64bit'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -3869,14 +4065,14 @@ else
 	tcl_cv_type_64bit=none
 	# See if the compiler knows natively about __int64
 	cat > conftest.$ac_ext <<EOF
-#line 3873 "configure"
+#line 4069 "configure"
 #include "confdefs.h"
 
 int main() {
 __int64 value = (__int64) 0;
 ; return 0; }
 EOF
-if { (eval echo configure:3880: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4076: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_type_64bit=__int64
 else
@@ -3890,7 +4086,7 @@ rm -f conftest*
 	# type that is our current guess for a 64-bit type inside this check
 	# program, so it should be modified only carefully...
         cat > conftest.$ac_ext <<EOF
-#line 3894 "configure"
+#line 4090 "configure"
 #include "confdefs.h"
 
 int main() {
@@ -3899,7 +4095,7 @@ switch (0) { 
         }
 ; return 0; }
 EOF
-if { (eval echo configure:3903: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4099: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_type_64bit=${tcl_type_64bit}
 else
@@ -3924,13 +4120,13 @@ EOF
 
 	# Now check for auxiliary declarations
 	echo $ac_n "checking for struct dirent64""... $ac_c" 1>&6
-echo "configure:3928: checking for struct dirent64" >&5
+echo "configure:4124: checking for struct dirent64" >&5
 	if eval "test \"`echo '$''{'tcl_cv_struct_dirent64'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	    cat > conftest.$ac_ext <<EOF
-#line 3934 "configure"
+#line 4130 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/dirent.h>
@@ -3938,7 +4134,7 @@ int main() {
 struct dirent64 p;
 ; return 0; }
 EOF
-if { (eval echo configure:3942: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4138: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_struct_dirent64=yes
 else
@@ -3959,13 +4155,13 @@ EOF
 	echo "$ac_t""${tcl_cv_struct_dirent64}" 1>&6
 
 	echo $ac_n "checking for struct stat64""... $ac_c" 1>&6
-echo "configure:3963: checking for struct stat64" >&5
+echo "configure:4159: checking for struct stat64" >&5
 	if eval "test \"`echo '$''{'tcl_cv_struct_stat64'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	    cat > conftest.$ac_ext <<EOF
-#line 3969 "configure"
+#line 4165 "configure"
 #include "confdefs.h"
 #include <sys/stat.h>
 int main() {
@@ -3973,7 +4169,7 @@ struct stat64 p;
 
 ; return 0; }
 EOF
-if { (eval echo configure:3977: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4173: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_struct_stat64=yes
 else
@@ -3996,12 +4192,12 @@ EOF
 	for ac_func in open64 lseek64
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:4000: checking for $ac_func" >&5
+echo "configure:4196: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4005 "configure"
+#line 4201 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -4024,7 +4220,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4028: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4224: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -4049,13 +4245,13 @@ fi
 done
 
 	echo $ac_n "checking for off64_t""... $ac_c" 1>&6
-echo "configure:4053: checking for off64_t" >&5
+echo "configure:4249: checking for off64_t" >&5
 	if eval "test \"`echo '$''{'tcl_cv_type_off64_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	    cat > conftest.$ac_ext <<EOF
-#line 4059 "configure"
+#line 4255 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 int main() {
@@ -4063,7 +4259,7 @@ off64_t offset;
 
 ; return 0; }
 EOF
-if { (eval echo configure:4067: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4263: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_type_off64_t=yes
 else
@@ -4094,14 +4290,14 @@ EOF
 #--------------------------------------------------------------------
 
 echo $ac_n "checking whether byte ordering is bigendian""... $ac_c" 1>&6
-echo "configure:4098: checking whether byte ordering is bigendian" >&5
+echo "configure:4294: checking whether byte ordering is bigendian" >&5
 if eval "test \"`echo '$''{'ac_cv_c_bigendian'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   ac_cv_c_bigendian=unknown
 # See if sys/param.h defines the BYTE_ORDER macro.
 cat > conftest.$ac_ext <<EOF
-#line 4105 "configure"
+#line 4301 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/param.h>
@@ -4112,11 +4308,11 @@ int main() {
 #endif
 ; return 0; }
 EOF
-if { (eval echo configure:4116: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4312: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   # It does; now see whether it defined to BIG_ENDIAN or not.
 cat > conftest.$ac_ext <<EOF
-#line 4120 "configure"
+#line 4316 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/param.h>
@@ -4127,7 +4323,7 @@ int main() {
 #endif
 ; return 0; }
 EOF
-if { (eval echo configure:4131: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4327: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_c_bigendian=yes
 else
@@ -4147,7 +4343,7 @@ if test "$cross_compiling" = yes; then
     { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
 else
   cat > conftest.$ac_ext <<EOF
-#line 4151 "configure"
+#line 4347 "configure"
 #include "confdefs.h"
 main () {
   /* Are we little or big endian?  From Harbison&Steele.  */
@@ -4160,7 +4356,7 @@ main () {
   exit (u.c[sizeof (long) - 1] == 1);
 }
 EOF
-if { (eval echo configure:4164: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:4360: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_c_bigendian=no
 else
@@ -4193,12 +4389,12 @@ fi
 for ac_func in getcwd
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:4197: checking for $ac_func" >&5
+echo "configure:4393: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4202 "configure"
+#line 4398 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -4221,7 +4417,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4225: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4421: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -4255,12 +4451,12 @@ done
 for ac_func in opendir strstr
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:4259: checking for $ac_func" >&5
+echo "configure:4455: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4264 "configure"
+#line 4460 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -4283,7 +4479,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4287: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4483: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -4313,12 +4509,12 @@ done
 for ac_func in strtol strtoll strtoull tmpnam waitpid
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:4317: checking for $ac_func" >&5
+echo "configure:4513: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4322 "configure"
+#line 4518 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -4341,7 +4537,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4345: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4541: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -4368,12 +4564,12 @@ done
 
 
 echo $ac_n "checking for strerror""... $ac_c" 1>&6
-echo "configure:4372: checking for strerror" >&5
+echo "configure:4568: checking for strerror" >&5
 if eval "test \"`echo '$''{'ac_cv_func_strerror'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4377 "configure"
+#line 4573 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char strerror(); below.  */
@@ -4396,7 +4592,7 @@ strerror();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4400: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4596: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_strerror=yes"
 else
@@ -4420,12 +4616,12 @@ EOF
 fi
 
 echo $ac_n "checking for getwd""... $ac_c" 1>&6
-echo "configure:4424: checking for getwd" >&5
+echo "configure:4620: checking for getwd" >&5
 if eval "test \"`echo '$''{'ac_cv_func_getwd'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4429 "configure"
+#line 4625 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char getwd(); below.  */
@@ -4448,7 +4644,7 @@ getwd();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4452: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4648: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_getwd=yes"
 else
@@ -4472,12 +4668,12 @@ EOF
 fi
 
 echo $ac_n "checking for wait3""... $ac_c" 1>&6
-echo "configure:4476: checking for wait3" >&5
+echo "configure:4672: checking for wait3" >&5
 if eval "test \"`echo '$''{'ac_cv_func_wait3'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4481 "configure"
+#line 4677 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char wait3(); below.  */
@@ -4500,7 +4696,7 @@ wait3();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4504: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4700: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_wait3=yes"
 else
@@ -4524,12 +4720,12 @@ EOF
 fi
 
 echo $ac_n "checking for uname""... $ac_c" 1>&6
-echo "configure:4528: checking for uname" >&5
+echo "configure:4724: checking for uname" >&5
 if eval "test \"`echo '$''{'ac_cv_func_uname'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4533 "configure"
+#line 4729 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char uname(); below.  */
@@ -4552,7 +4748,7 @@ uname();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4556: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4752: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_uname=yes"
 else
@@ -4576,12 +4772,12 @@ EOF
 fi
 
 echo $ac_n "checking for realpath""... $ac_c" 1>&6
-echo "configure:4580: checking for realpath" >&5
+echo "configure:4776: checking for realpath" >&5
 if eval "test \"`echo '$''{'ac_cv_func_realpath'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4585 "configure"
+#line 4781 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char realpath(); below.  */
@@ -4604,7 +4800,7 @@ realpath();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4608: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4804: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_realpath=yes"
 else
@@ -4639,12 +4835,12 @@ fi
 
 
     echo $ac_n "checking dirent.h""... $ac_c" 1>&6
-echo "configure:4643: checking dirent.h" >&5
+echo "configure:4839: checking dirent.h" >&5
     if eval "test \"`echo '$''{'tcl_cv_dirent_h'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4648 "configure"
+#line 4844 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <dirent.h>
@@ -4670,7 +4866,7 @@ closedir(d);
 
 ; return 0; }
 EOF
-if { (eval echo configure:4674: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4870: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   tcl_cv_dirent_h=yes
 else
@@ -4693,17 +4889,17 @@ EOF
     echo "$ac_t""$tcl_ok" 1>&6
     ac_safe=`echo "errno.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for errno.h""... $ac_c" 1>&6
-echo "configure:4697: checking for errno.h" >&5
+echo "configure:4893: checking for errno.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4702 "configure"
+#line 4898 "configure"
 #include "confdefs.h"
 #include <errno.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:4707: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:4903: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -4730,17 +4926,17 @@ fi
 
     ac_safe=`echo "float.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for float.h""... $ac_c" 1>&6
-echo "configure:4734: checking for float.h" >&5
+echo "configure:4930: checking for float.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4739 "configure"
+#line 4935 "configure"
 #include "confdefs.h"
 #include <float.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:4744: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:4940: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -4767,17 +4963,17 @@ fi
 
     ac_safe=`echo "values.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for values.h""... $ac_c" 1>&6
-echo "configure:4771: checking for values.h" >&5
+echo "configure:4967: checking for values.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4776 "configure"
+#line 4972 "configure"
 #include "confdefs.h"
 #include <values.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:4781: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:4977: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -4804,17 +5000,17 @@ fi
 
     ac_safe=`echo "limits.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for limits.h""... $ac_c" 1>&6
-echo "configure:4808: checking for limits.h" >&5
+echo "configure:5004: checking for limits.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4813 "configure"
+#line 5009 "configure"
 #include "confdefs.h"
 #include <limits.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:4818: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:5014: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -4844,17 +5040,17 @@ fi
 
     ac_safe=`echo "stdlib.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for stdlib.h""... $ac_c" 1>&6
-echo "configure:4848: checking for stdlib.h" >&5
+echo "configure:5044: checking for stdlib.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4853 "configure"
+#line 5049 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:4858: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:5054: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -4877,7 +5073,7 @@ tcl_ok=0
 fi
 
     cat > conftest.$ac_ext <<EOF
-#line 4881 "configure"
+#line 5077 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 EOF
@@ -4891,7 +5087,7 @@ fi
 rm -f conftest*
 
     cat > conftest.$ac_ext <<EOF
-#line 4895 "configure"
+#line 5091 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 EOF
@@ -4905,7 +5101,7 @@ fi
 rm -f conftest*
 
     cat > conftest.$ac_ext <<EOF
-#line 4909 "configure"
+#line 5105 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 EOF
@@ -4926,17 +5122,17 @@ EOF
     fi
     ac_safe=`echo "string.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for string.h""... $ac_c" 1>&6
-echo "configure:4930: checking for string.h" >&5
+echo "configure:5126: checking for string.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4935 "configure"
+#line 5131 "configure"
 #include "confdefs.h"
 #include <string.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:4940: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:5136: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -4959,7 +5155,7 @@ tcl_ok=0
 fi
 
     cat > conftest.$ac_ext <<EOF
-#line 4963 "configure"
+#line 5159 "configure"
 #include "confdefs.h"
 #include <string.h>
 EOF
@@ -4973,7 +5169,7 @@ fi
 rm -f conftest*
 
     cat > conftest.$ac_ext <<EOF
-#line 4977 "configure"
+#line 5173 "configure"
 #include "confdefs.h"
 #include <string.h>
 EOF
@@ -4999,17 +5195,17 @@ EOF
 
     ac_safe=`echo "sys/wait.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for sys/wait.h""... $ac_c" 1>&6
-echo "configure:5003: checking for sys/wait.h" >&5
+echo "configure:5199: checking for sys/wait.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5008 "configure"
+#line 5204 "configure"
 #include "confdefs.h"
 #include <sys/wait.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:5013: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:5209: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -5036,17 +5232,17 @@ fi
 
     ac_safe=`echo "dlfcn.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for dlfcn.h""... $ac_c" 1>&6
-echo "configure:5040: checking for dlfcn.h" >&5
+echo "configure:5236: checking for dlfcn.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5045 "configure"
+#line 5241 "configure"
 #include "confdefs.h"
 #include <dlfcn.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:5050: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:5246: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -5078,17 +5274,17 @@ fi
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:5082: checking for $ac_hdr" >&5
+echo "configure:5278: checking for $ac_hdr" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5087 "configure"
+#line 5283 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:5092: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:5288: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -5128,17 +5324,17 @@ done
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:5132: checking for $ac_hdr" >&5
+echo "configure:5328: checking for $ac_hdr" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5137 "configure"
+#line 5333 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:5142: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:5338: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -5165,7 +5361,7 @@ fi
 done
 
     echo $ac_n "checking termios vs. termio vs. sgtty""... $ac_c" 1>&6
-echo "configure:5169: checking termios vs. termio vs. sgtty" >&5
+echo "configure:5365: checking termios vs. termio vs. sgtty" >&5
     if eval "test \"`echo '$''{'tcl_cv_api_serial'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -5174,7 +5370,7 @@ else
   tcl_cv_api_serial=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 5178 "configure"
+#line 5374 "configure"
 #include "confdefs.h"
 
 #include <termios.h>
@@ -5189,7 +5385,7 @@ int main() {
     return 1;
 }
 EOF
-if { (eval echo configure:5193: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:5389: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   tcl_cv_api_serial=termios
 else
@@ -5206,7 +5402,7 @@ fi
   tcl_cv_api_serial=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 5210 "configure"
+#line 5406 "configure"
 #include "confdefs.h"
 
 #include <termio.h>
@@ -5220,7 +5416,7 @@ int main() {
     return 1;
 }
 EOF
-if { (eval echo configure:5224: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:5420: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   tcl_cv_api_serial=termio
 else
@@ -5238,7 +5434,7 @@ fi
   tcl_cv_api_serial=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 5242 "configure"
+#line 5438 "configure"
 #include "confdefs.h"
 
 #include <sgtty.h>
@@ -5253,7 +5449,7 @@ int main() {
     return 1;
 }
 EOF
-if { (eval echo configure:5257: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:5453: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   tcl_cv_api_serial=sgtty
 else
@@ -5271,7 +5467,7 @@ fi
   tcl_cv_api_serial=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 5275 "configure"
+#line 5471 "configure"
 #include "confdefs.h"
 
 #include <termios.h>
@@ -5288,7 +5484,7 @@ int main() {
     return 1;
 }
 EOF
-if { (eval echo configure:5292: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:5488: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   tcl_cv_api_serial=termios
 else
@@ -5306,7 +5502,7 @@ fi
   tcl_cv_api_serial=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 5310 "configure"
+#line 5506 "configure"
 #include "confdefs.h"
 
 #include <termio.h>
@@ -5322,7 +5518,7 @@ int main() {
     return 1;
     }
 EOF
-if { (eval echo configure:5326: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:5522: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   tcl_cv_api_serial=termio
 else
@@ -5340,7 +5536,7 @@ fi
   tcl_cv_api_serial=none
 else
   cat > conftest.$ac_ext <<EOF
-#line 5344 "configure"
+#line 5540 "configure"
 #include "confdefs.h"
 
 #include <sgtty.h>
@@ -5357,7 +5553,7 @@ int main() {
     return 1;
 }
 EOF
-if { (eval echo configure:5361: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:5557: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   tcl_cv_api_serial=sgtty
 else
@@ -5400,19 +5596,19 @@ EOF
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for fd_set in sys/types""... $ac_c" 1>&6
-echo "configure:5404: checking for fd_set in sys/types" >&5
+echo "configure:5600: checking for fd_set in sys/types" >&5
 if eval "test \"`echo '$''{'tcl_cv_type_fd_set'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5409 "configure"
+#line 5605 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 int main() {
 fd_set readMask, writeMask;
 ; return 0; }
 EOF
-if { (eval echo configure:5416: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5612: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_type_fd_set=yes
 else
@@ -5428,12 +5624,12 @@ echo "$ac_t""$tcl_cv_type_fd_set" 1>&6
 tk_ok=$tcl_cv_type_fd_set
 if test $tcl_cv_type_fd_set = no; then
     echo $ac_n "checking for fd_mask in sys/select""... $ac_c" 1>&6
-echo "configure:5432: checking for fd_mask in sys/select" >&5
+echo "configure:5628: checking for fd_mask in sys/select" >&5
     if eval "test \"`echo '$''{'tcl_cv_grep_fd_mask'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5437 "configure"
+#line 5633 "configure"
 #include "confdefs.h"
 #include <sys/select.h>
 EOF
@@ -5470,12 +5666,12 @@ fi
 #------------------------------------------------------------------------------
 
 echo $ac_n "checking whether struct tm is in sys/time.h or time.h""... $ac_c" 1>&6
-echo "configure:5474: checking whether struct tm is in sys/time.h or time.h" >&5
+echo "configure:5670: checking whether struct tm is in sys/time.h or time.h" >&5
 if eval "test \"`echo '$''{'ac_cv_struct_tm'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5479 "configure"
+#line 5675 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <time.h>
@@ -5483,7 +5679,7 @@ int main() {
 struct tm *tp; tp->tm_sec;
 ; return 0; }
 EOF
-if { (eval echo configure:5487: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5683: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_struct_tm=time.h
 else
@@ -5508,17 +5704,17 @@ fi
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:5512: checking for $ac_hdr" >&5
+echo "configure:5708: checking for $ac_hdr" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5517 "configure"
+#line 5713 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:5522: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:5718: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -5545,12 +5741,12 @@ fi
 done
 
     echo $ac_n "checking whether time.h and sys/time.h may both be included""... $ac_c" 1>&6
-echo "configure:5549: checking whether time.h and sys/time.h may both be included" >&5
+echo "configure:5745: checking whether time.h and sys/time.h may both be included" >&5
 if eval "test \"`echo '$''{'ac_cv_header_time'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5554 "configure"
+#line 5750 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/time.h>
@@ -5559,7 +5755,7 @@ int main() {
 struct tm *tp;
 ; return 0; }
 EOF
-if { (eval echo configure:5563: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5759: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_header_time=yes
 else
@@ -5580,12 +5776,12 @@ EOF
 fi
 
     echo $ac_n "checking for tm_zone in struct tm""... $ac_c" 1>&6
-echo "configure:5584: checking for tm_zone in struct tm" >&5
+echo "configure:5780: checking for tm_zone in struct tm" >&5
 if eval "test \"`echo '$''{'ac_cv_struct_tm_zone'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5589 "configure"
+#line 5785 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <$ac_cv_struct_tm>
@@ -5593,7 +5789,7 @@ int main() {
 struct tm tm; tm.tm_zone;
 ; return 0; }
 EOF
-if { (eval echo configure:5597: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5793: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_struct_tm_zone=yes
 else
@@ -5613,12 +5809,12 @@ EOF
 
 else
   echo $ac_n "checking for tzname""... $ac_c" 1>&6
-echo "configure:5617: checking for tzname" >&5
+echo "configure:5813: checking for tzname" >&5
 if eval "test \"`echo '$''{'ac_cv_var_tzname'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5622 "configure"
+#line 5818 "configure"
 #include "confdefs.h"
 #include <time.h>
 #ifndef tzname /* For SGI.  */
@@ -5628,7 +5824,7 @@ int main() {
 atoi(*tzname);
 ; return 0; }
 EOF
-if { (eval echo configure:5632: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5828: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   ac_cv_var_tzname=yes
 else
@@ -5653,12 +5849,12 @@ fi
     for ac_func in gmtime_r localtime_r
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:5657: checking for $ac_func" >&5
+echo "configure:5853: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5662 "configure"
+#line 5858 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -5681,7 +5877,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:5685: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5881: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -5707,19 +5903,19 @@ done
 
 
     echo $ac_n "checking tm_tzadj in struct tm""... $ac_c" 1>&6
-echo "configure:5711: checking tm_tzadj in struct tm" >&5
+echo "configure:5907: checking tm_tzadj in struct tm" >&5
     if eval "test \"`echo '$''{'tcl_cv_member_tm_tzadj'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5716 "configure"
+#line 5912 "configure"
 #include "confdefs.h"
 #include <time.h>
 int main() {
 struct tm tm; tm.tm_tzadj;
 ; return 0; }
 EOF
-if { (eval echo configure:5723: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5919: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_member_tm_tzadj=yes
 else
@@ -5740,19 +5936,19 @@ EOF
     fi
 
     echo $ac_n "checking tm_gmtoff in struct tm""... $ac_c" 1>&6
-echo "configure:5744: checking tm_gmtoff in struct tm" >&5
+echo "configure:5940: checking tm_gmtoff in struct tm" >&5
     if eval "test \"`echo '$''{'tcl_cv_member_tm_gmtoff'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5749 "configure"
+#line 5945 "configure"
 #include "confdefs.h"
 #include <time.h>
 int main() {
 struct tm tm; tm.tm_gmtoff;
 ; return 0; }
 EOF
-if { (eval echo configure:5756: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5952: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_member_tm_gmtoff=yes
 else
@@ -5777,12 +5973,12 @@ EOF
     # (like convex) have timezone functions, etc.
     #
     echo $ac_n "checking long timezone variable""... $ac_c" 1>&6
-echo "configure:5781: checking long timezone variable" >&5
+echo "configure:5977: checking long timezone variable" >&5
     if eval "test \"`echo '$''{'tcl_cv_var_timezone'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5786 "configure"
+#line 5982 "configure"
 #include "confdefs.h"
 #include <time.h>
 int main() {
@@ -5791,7 +5987,7 @@ extern long timezone;
 	    exit (0);
 ; return 0; }
 EOF
-if { (eval echo configure:5795: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5991: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_timezone_long=yes
 else
@@ -5814,12 +6010,12 @@ EOF
 	# On some systems (eg IRIX 6.2), timezone is a time_t and not a long.
 	#
 	echo $ac_n "checking time_t timezone variable""... $ac_c" 1>&6
-echo "configure:5818: checking time_t timezone variable" >&5
+echo "configure:6014: checking time_t timezone variable" >&5
 	if eval "test \"`echo '$''{'tcl_cv_timezone_time'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5823 "configure"
+#line 6019 "configure"
 #include "confdefs.h"
 #include <time.h>
 int main() {
@@ -5828,7 +6024,7 @@ extern time_t timezone;
 		exit (0);
 ; return 0; }
 EOF
-if { (eval echo configure:5832: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6028: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_timezone_time=yes
 else
@@ -5855,12 +6051,12 @@ EOF
 #	in struct stat.  But we might be able to use fstatfs instead.
 #--------------------------------------------------------------------
 echo $ac_n "checking for st_blksize in struct stat""... $ac_c" 1>&6
-echo "configure:5859: checking for st_blksize in struct stat" >&5
+echo "configure:6055: checking for st_blksize in struct stat" >&5
 if eval "test \"`echo '$''{'ac_cv_struct_st_blksize'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5864 "configure"
+#line 6060 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/stat.h>
@@ -5868,7 +6064,7 @@ int main() {
 struct stat s; s.st_blksize;
 ; return 0; }
 EOF
-if { (eval echo configure:5872: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6068: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_struct_st_blksize=yes
 else
@@ -5889,12 +6085,12 @@ EOF
 fi
 
 echo $ac_n "checking for fstatfs""... $ac_c" 1>&6
-echo "configure:5893: checking for fstatfs" >&5
+echo "configure:6089: checking for fstatfs" >&5
 if eval "test \"`echo '$''{'ac_cv_func_fstatfs'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5898 "configure"
+#line 6094 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char fstatfs(); below.  */
@@ -5917,7 +6113,7 @@ fstatfs();
 
 ; return 0; }
 EOF
-if { (eval echo configure:5921: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:6117: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_fstatfs=yes"
 else
@@ -5946,7 +6142,7 @@ fi
 #       data, this checks it and add memcmp.o to LIBOBJS if needed
 #--------------------------------------------------------------------
 echo $ac_n "checking for 8-bit clean memcmp""... $ac_c" 1>&6
-echo "configure:5950: checking for 8-bit clean memcmp" >&5
+echo "configure:6146: checking for 8-bit clean memcmp" >&5
 if eval "test \"`echo '$''{'ac_cv_func_memcmp_clean'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -5954,7 +6150,7 @@ else
   ac_cv_func_memcmp_clean=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 5958 "configure"
+#line 6154 "configure"
 #include "confdefs.h"
 
 main()
@@ -5964,7 +6160,7 @@ main()
 }
 
 EOF
-if { (eval echo configure:5968: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:6164: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_func_memcmp_clean=yes
 else
@@ -5988,12 +6184,12 @@ test $ac_cv_func_memcmp_clean = no && LI
 #       {The replacement define is in compat/string.h}
 #--------------------------------------------------------------------
 echo $ac_n "checking for memmove""... $ac_c" 1>&6
-echo "configure:5992: checking for memmove" >&5
+echo "configure:6188: checking for memmove" >&5
 if eval "test \"`echo '$''{'ac_cv_func_memmove'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5997 "configure"
+#line 6193 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char memmove(); below.  */
@@ -6016,7 +6212,7 @@ memmove();
 
 ; return 0; }
 EOF
-if { (eval echo configure:6020: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:6216: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_memmove=yes"
 else
@@ -6049,12 +6245,12 @@ fi
 #--------------------------------------------------------------------
 if test "x${ac_cv_func_strstr}" = "xyes"; then
     echo $ac_n "checking proper strstr implementation""... $ac_c" 1>&6
-echo "configure:6053: checking proper strstr implementation" >&5
+echo "configure:6249: checking proper strstr implementation" >&5
     if test "$cross_compiling" = yes; then
   tcl_ok=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 6058 "configure"
+#line 6254 "configure"
 #include "confdefs.h"
 
     extern int strstr();
@@ -6064,7 +6260,7 @@ else
     }
     
 EOF
-if { (eval echo configure:6068: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:6264: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   tcl_ok=yes
 else
@@ -6091,12 +6287,12 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for strtoul""... $ac_c" 1>&6
-echo "configure:6095: checking for strtoul" >&5
+echo "configure:6291: checking for strtoul" >&5
 if eval "test \"`echo '$''{'ac_cv_func_strtoul'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6100 "configure"
+#line 6296 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char strtoul(); below.  */
@@ -6119,7 +6315,7 @@ strtoul();
 
 ; return 0; }
 EOF
-if { (eval echo configure:6123: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:6319: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_strtoul=yes"
 else
@@ -6143,7 +6339,7 @@ if test "$cross_compiling" = yes; then
   tcl_ok=0
 else
   cat > conftest.$ac_ext <<EOF
-#line 6147 "configure"
+#line 6343 "configure"
 #include "confdefs.h"
 
 extern int strtoul();
@@ -6159,7 +6355,7 @@ int main()
     exit(0);
 }
 EOF
-if { (eval echo configure:6163: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:6359: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   :
 else
@@ -6182,12 +6378,12 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for strtod""... $ac_c" 1>&6
-echo "configure:6186: checking for strtod" >&5
+echo "configure:6382: checking for strtod" >&5
 if eval "test \"`echo '$''{'ac_cv_func_strtod'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6191 "configure"
+#line 6387 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char strtod(); below.  */
@@ -6210,7 +6406,7 @@ strtod();
 
 ; return 0; }
 EOF
-if { (eval echo configure:6214: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:6410: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_strtod=yes"
 else
@@ -6234,7 +6430,7 @@ if test "$cross_compiling" = yes; then
   tcl_ok=0
 else
   cat > conftest.$ac_ext <<EOF
-#line 6238 "configure"
+#line 6434 "configure"
 #include "confdefs.h"
 
 extern double strtod();
@@ -6250,7 +6446,7 @@ int main()
     exit(0);
 }
 EOF
-if { (eval echo configure:6254: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:6450: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   :
 else
@@ -6276,12 +6472,12 @@ fi
 
 
     echo $ac_n "checking for strtod""... $ac_c" 1>&6
-echo "configure:6280: checking for strtod" >&5
+echo "configure:6476: checking for strtod" >&5
 if eval "test \"`echo '$''{'ac_cv_func_strtod'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6285 "configure"
+#line 6481 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char strtod(); below.  */
@@ -6304,7 +6500,7 @@ strtod();
 
 ; return 0; }
 EOF
-if { (eval echo configure:6308: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:6504: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_strtod=yes"
 else
@@ -6326,7 +6522,7 @@ fi
 
     if test "$tcl_strtod" = 1; then
 	echo $ac_n "checking for Solaris2.4/Tru64 strtod bugs""... $ac_c" 1>&6
-echo "configure:6330: checking for Solaris2.4/Tru64 strtod bugs" >&5
+echo "configure:6526: checking for Solaris2.4/Tru64 strtod bugs" >&5
 	if eval "test \"`echo '$''{'tcl_cv_strtod_buggy'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6335,7 +6531,7 @@ else
   tcl_cv_strtod_buggy=0
 else
   cat > conftest.$ac_ext <<EOF
-#line 6339 "configure"
+#line 6535 "configure"
 #include "confdefs.h"
 
 		extern double strtod();
@@ -6358,7 +6554,7 @@ else
 		    exit(0);
 		}
 EOF
-if { (eval echo configure:6362: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:6558: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   tcl_cv_strtod_buggy=1
 else
@@ -6391,12 +6587,12 @@ EOF
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for ANSI C header files""... $ac_c" 1>&6
-echo "configure:6395: checking for ANSI C header files" >&5
+echo "configure:6591: checking for ANSI C header files" >&5
 if eval "test \"`echo '$''{'ac_cv_header_stdc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6400 "configure"
+#line 6596 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 #include <stdarg.h>
@@ -6404,7 +6600,7 @@ else
 #include <float.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:6408: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:6604: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -6421,7 +6617,7 @@ rm -f conftest*
 if test $ac_cv_header_stdc = yes; then
   # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
 cat > conftest.$ac_ext <<EOF
-#line 6425 "configure"
+#line 6621 "configure"
 #include "confdefs.h"
 #include <string.h>
 EOF
@@ -6439,7 +6635,7 @@ fi
 if test $ac_cv_header_stdc = yes; then
   # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
 cat > conftest.$ac_ext <<EOF
-#line 6443 "configure"
+#line 6639 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 EOF
@@ -6460,7 +6656,7 @@ if test "$cross_compiling" = yes; then
   :
 else
   cat > conftest.$ac_ext <<EOF
-#line 6464 "configure"
+#line 6660 "configure"
 #include "confdefs.h"
 #include <ctype.h>
 #define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
@@ -6471,7 +6667,7 @@ if (XOR (islower (i), ISLOWER (i)) || to
 exit (0); }
 
 EOF
-if { (eval echo configure:6475: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:6671: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   :
 else
@@ -6495,12 +6691,12 @@ EOF
 fi
 
 echo $ac_n "checking for mode_t""... $ac_c" 1>&6
-echo "configure:6499: checking for mode_t" >&5
+echo "configure:6695: checking for mode_t" >&5
 if eval "test \"`echo '$''{'ac_cv_type_mode_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6504 "configure"
+#line 6700 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #if STDC_HEADERS
@@ -6528,12 +6724,12 @@ EOF
 fi
 
 echo $ac_n "checking for pid_t""... $ac_c" 1>&6
-echo "configure:6532: checking for pid_t" >&5
+echo "configure:6728: checking for pid_t" >&5
 if eval "test \"`echo '$''{'ac_cv_type_pid_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6537 "configure"
+#line 6733 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #if STDC_HEADERS
@@ -6561,12 +6757,12 @@ EOF
 fi
 
 echo $ac_n "checking for size_t""... $ac_c" 1>&6
-echo "configure:6565: checking for size_t" >&5
+echo "configure:6761: checking for size_t" >&5
 if eval "test \"`echo '$''{'ac_cv_type_size_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6570 "configure"
+#line 6766 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #if STDC_HEADERS
@@ -6594,12 +6790,12 @@ EOF
 fi
 
 echo $ac_n "checking for uid_t in sys/types.h""... $ac_c" 1>&6
-echo "configure:6598: checking for uid_t in sys/types.h" >&5
+echo "configure:6794: checking for uid_t in sys/types.h" >&5
 if eval "test \"`echo '$''{'ac_cv_type_uid_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6603 "configure"
+#line 6799 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 EOF
@@ -6629,12 +6825,12 @@ fi
 
 
 echo $ac_n "checking for socklen_t""... $ac_c" 1>&6
-echo "configure:6633: checking for socklen_t" >&5
+echo "configure:6829: checking for socklen_t" >&5
 if eval "test \"`echo '$''{'ac_cv_type_socklen_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6638 "configure"
+#line 6834 "configure"
 #include "confdefs.h"
 
     #include <sys/types.h>
@@ -6673,12 +6869,12 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for opendir""... $ac_c" 1>&6
-echo "configure:6677: checking for opendir" >&5
+echo "configure:6873: checking for opendir" >&5
 if eval "test \"`echo '$''{'ac_cv_func_opendir'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6682 "configure"
+#line 6878 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char opendir(); below.  */
@@ -6701,7 +6897,7 @@ opendir();
 
 ; return 0; }
 EOF
-if { (eval echo configure:6705: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:6901: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_opendir=yes"
 else
@@ -6734,12 +6930,12 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking union wait""... $ac_c" 1>&6
-echo "configure:6738: checking union wait" >&5
+echo "configure:6934: checking union wait" >&5
 if eval "test \"`echo '$''{'tcl_cv_union_wait'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6743 "configure"
+#line 6939 "configure"
 #include "confdefs.h"
 #include <sys/types.h> 
 #include <sys/wait.h>
@@ -6751,7 +6947,7 @@ WIFEXITED(x);		/* Generates compiler err
     
 ; return 0; }
 EOF
-if { (eval echo configure:6755: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:6951: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   tcl_cv_union_wait=yes
 else
@@ -6778,12 +6974,12 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for strncasecmp""... $ac_c" 1>&6
-echo "configure:6782: checking for strncasecmp" >&5
+echo "configure:6978: checking for strncasecmp" >&5
 if eval "test \"`echo '$''{'ac_cv_func_strncasecmp'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6787 "configure"
+#line 6983 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char strncasecmp(); below.  */
@@ -6806,7 +7002,7 @@ strncasecmp();
 
 ; return 0; }
 EOF
-if { (eval echo configure:6810: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7006: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_strncasecmp=yes"
 else
@@ -6828,7 +7024,7 @@ fi
 
 if test "$tcl_ok" = 0; then
     echo $ac_n "checking for strncasecmp in -lsocket""... $ac_c" 1>&6
-echo "configure:6832: checking for strncasecmp in -lsocket" >&5
+echo "configure:7028: checking for strncasecmp in -lsocket" >&5
 ac_lib_var=`echo socket'_'strncasecmp | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -6836,7 +7032,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lsocket  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 6840 "configure"
+#line 7036 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -6847,7 +7043,7 @@ int main() {
 strncasecmp()
 ; return 0; }
 EOF
-if { (eval echo configure:6851: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7047: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -6871,7 +7067,7 @@ fi
 fi
 if test "$tcl_ok" = 0; then
     echo $ac_n "checking for strncasecmp in -linet""... $ac_c" 1>&6
-echo "configure:6875: checking for strncasecmp in -linet" >&5
+echo "configure:7071: checking for strncasecmp in -linet" >&5
 ac_lib_var=`echo inet'_'strncasecmp | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -6879,7 +7075,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-linet  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 6883 "configure"
+#line 7079 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -6890,7 +7086,7 @@ int main() {
 strncasecmp()
 ; return 0; }
 EOF
-if { (eval echo configure:6894: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7090: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -6928,12 +7124,12 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for BSDgettimeofday""... $ac_c" 1>&6
-echo "configure:6932: checking for BSDgettimeofday" >&5
+echo "configure:7128: checking for BSDgettimeofday" >&5
 if eval "test \"`echo '$''{'ac_cv_func_BSDgettimeofday'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6937 "configure"
+#line 7133 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char BSDgettimeofday(); below.  */
@@ -6956,7 +7152,7 @@ BSDgettimeofday();
 
 ; return 0; }
 EOF
-if { (eval echo configure:6960: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7156: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_BSDgettimeofday=yes"
 else
@@ -6978,12 +7174,12 @@ else
   echo "$ac_t""no" 1>&6
 
     echo $ac_n "checking for gettimeofday""... $ac_c" 1>&6
-echo "configure:6982: checking for gettimeofday" >&5
+echo "configure:7178: checking for gettimeofday" >&5
 if eval "test \"`echo '$''{'ac_cv_func_gettimeofday'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6987 "configure"
+#line 7183 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char gettimeofday(); below.  */
@@ -7006,7 +7202,7 @@ gettimeofday();
 
 ; return 0; }
 EOF
-if { (eval echo configure:7010: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7206: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_gettimeofday=yes"
 else
@@ -7033,12 +7229,12 @@ fi
 fi
 
 echo $ac_n "checking for gettimeofday declaration""... $ac_c" 1>&6
-echo "configure:7037: checking for gettimeofday declaration" >&5
+echo "configure:7233: checking for gettimeofday declaration" >&5
 if eval "test \"`echo '$''{'tcl_cv_grep_gettimeofday'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 7042 "configure"
+#line 7238 "configure"
 #include "confdefs.h"
 #include <sys/time.h>
 EOF
@@ -7069,14 +7265,14 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking whether char is unsigned""... $ac_c" 1>&6
-echo "configure:7073: checking whether char is unsigned" >&5
+echo "configure:7269: checking whether char is unsigned" >&5
 if eval "test \"`echo '$''{'ac_cv_c_char_unsigned'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   if test "$GCC" = yes; then
   # GCC predefines this symbol on systems where it applies.
 cat > conftest.$ac_ext <<EOF
-#line 7080 "configure"
+#line 7276 "configure"
 #include "confdefs.h"
 #ifdef __CHAR_UNSIGNED__
   yes
@@ -7098,7 +7294,7 @@ if test "$cross_compiling" = yes; then
     { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
 else
   cat > conftest.$ac_ext <<EOF
-#line 7102 "configure"
+#line 7298 "configure"
 #include "confdefs.h"
 /* volatile prevents gcc2 from optimizing the test away on sparcs.  */
 #if !defined(__STDC__) || __STDC__ != 1
@@ -7108,7 +7304,7 @@ main() {
   volatile char c = 255; exit(c < 0);
 }
 EOF
-if { (eval echo configure:7112: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:7308: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_c_char_unsigned=yes
 else
@@ -7132,12 +7328,12 @@ EOF
 fi
 
 echo $ac_n "checking signed char declarations""... $ac_c" 1>&6
-echo "configure:7136: checking signed char declarations" >&5
+echo "configure:7332: checking signed char declarations" >&5
 if eval "test \"`echo '$''{'tcl_cv_char_signed'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 7141 "configure"
+#line 7337 "configure"
 #include "confdefs.h"
 
 int main() {
@@ -7147,7 +7343,7 @@ int main() {
 	
 ; return 0; }
 EOF
-if { (eval echo configure:7151: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:7347: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_char_signed=yes
 else
@@ -7172,7 +7368,7 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for a putenv() that copies the buffer""... $ac_c" 1>&6
-echo "configure:7176: checking for a putenv() that copies the buffer" >&5
+echo "configure:7372: checking for a putenv() that copies the buffer" >&5
 if eval "test \"`echo '$''{'tcl_cv_putenv_copy'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -7180,7 +7376,7 @@ else
   tcl_cv_putenv_copy=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 7184 "configure"
+#line 7380 "configure"
 #include "confdefs.h"
 
 	#include <stdlib.h>
@@ -7202,7 +7398,7 @@ else
 	}
     
 EOF
-if { (eval echo configure:7206: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:7402: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   tcl_cv_putenv_copy=no
 else
@@ -7244,17 +7440,17 @@ fi
 	if test "$langinfo_ok" = "yes"; then
 	    ac_safe=`echo "langinfo.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for langinfo.h""... $ac_c" 1>&6
-echo "configure:7248: checking for langinfo.h" >&5
+echo "configure:7444: checking for langinfo.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 7253 "configure"
+#line 7449 "configure"
 #include "confdefs.h"
 #include <langinfo.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:7258: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:7454: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -7279,17 +7475,17 @@ fi
 	fi
     fi
     echo $ac_n "checking whether to use nl_langinfo""... $ac_c" 1>&6
-echo "configure:7283: checking whether to use nl_langinfo" >&5
+echo "configure:7479: checking whether to use nl_langinfo" >&5
     if test "$langinfo_ok" = "yes"; then
 	cat > conftest.$ac_ext <<EOF
-#line 7286 "configure"
+#line 7482 "configure"
 #include "confdefs.h"
 #include <langinfo.h>
 int main() {
 nl_langinfo(CODESET);
 ; return 0; }
 EOF
-if { (eval echo configure:7293: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:7489: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   langinfo_ok=yes
 else
@@ -7324,17 +7520,17 @@ EOF
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:7328: checking for $ac_hdr" >&5
+echo "configure:7524: checking for $ac_hdr" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 7333 "configure"
+#line 7529 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:7338: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:7534: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -7364,17 +7560,17 @@ done
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:7368: checking for $ac_hdr" >&5
+echo "configure:7564: checking for $ac_hdr" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 7373 "configure"
+#line 7569 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:7378: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:7574: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -7401,7 +7597,7 @@ fi
 done
 
     echo $ac_n "checking FIONBIO vs. O_NONBLOCK for nonblocking I/O""... $ac_c" 1>&6
-echo "configure:7405: checking FIONBIO vs. O_NONBLOCK for nonblocking I/O" >&5
+echo "configure:7601: checking FIONBIO vs. O_NONBLOCK for nonblocking I/O" >&5
     if test -f /usr/lib/NextStep/software_version; then
 	system=NEXTSTEP-`awk '/3/,/3/' /usr/lib/NextStep/software_version`
     else
@@ -7464,7 +7660,7 @@ eval "TCL_LIB_FILE=libtcl${LIB_SUFFIX}"
 
 
     echo $ac_n "checking how to package libraries""... $ac_c" 1>&6
-echo "configure:7468: checking how to package libraries" >&5
+echo "configure:7664: checking how to package libraries" >&5
     # Check whether --enable-framework or --disable-framework was given.
 if test "${enable_framework+set}" = set; then
   enableval="$enable_framework"
@@ -7488,6 +7684,10 @@ fi
 	    echo "configure: warning: "Frameworks can only be built if --enable-shared is yes"" 1>&2
 	    FRAMEWORK_BUILD=0
 	fi
+	if test $tcl_corefoundation = no; then
+	    echo "configure: warning: "Frameworks can only be used when CoreFoundation is available"" 1>&2
+	    FRAMEWORK_BUILD=0
+	fi
     else
 	echo "$ac_t""standard shared library" 1>&6
 	FRAMEWORK_BUILD=0
Index: unix/tcl.m4
===================================================================
RCS file: /cvsroot/tcl/tcl/unix/tcl.m4,v
retrieving revision 1.96.2.22
diff -u -p -u -p -r1.96.2.22 tcl.m4
--- unix/tcl.m4	7 May 2005 00:01:09 -0000	1.96.2.22
+++ unix/tcl.m4	14 May 2005 19:15:50 -0000
@@ -387,6 +387,10 @@ AC_DEFUN(SC_ENABLE_FRAMEWORK, [
 	    AC_MSG_WARN("Frameworks can only be built if --enable-shared is yes")
 	    FRAMEWORK_BUILD=0
 	fi
+	if test $tcl_corefoundation = no; then
+	    AC_MSG_WARN("Frameworks can only be used when CoreFoundation is available")
+	    FRAMEWORK_BUILD=0
+	fi
     else
 	AC_MSG_RESULT([standard shared library])
 	FRAMEWORK_BUILD=0
@@ -1389,11 +1393,35 @@ dnl AC_CHECK_TOOL(AR, ar)
 	    PLAT_SRCS=\$\(MAC\_OSX_SRCS\)
 	    TCL_SHLIB_LD_EXTRAS='-compatibility_version ${VERSION} -current_version ${VERSION} -install_name ${DYLIB_INSTALL_DIR}/${TCL_LIB_FILE} -seg1addr 0xa000000'
 	    TK_SHLIB_LD_EXTRAS=' -compatibility_version ${VERSION} -current_version ${VERSION} -install_name ${DYLIB_INSTALL_DIR}/${TK_LIB_FILE}  -seg1addr 0xb000000 -unexported_symbols_list $$(f=$(TCL_STUB_LIB_FILE).E && nm -gjp $(TCL_BIN_DIR)/$(TCL_STUB_LIB_FILE) | tail +3 > $$f && echo $$f)'
-	    LIBS="$LIBS -framework CoreFoundation"
+            AC_MSG_CHECKING([whether to use CoreFoundation])
+            AC_ARG_ENABLE(corefoundation, [  --enable-corefoundation use CoreFoundation API [--enable-corefoundation]],
+                [tcl_corefoundation=$enableval], [tcl_corefoundation=yes])
+            AC_MSG_RESULT([$tcl_corefoundation])
+            if test $tcl_corefoundation = yes; then
+                AC_CACHE_CHECK([for CoreFoundation.framework], tcl_cv_lib_corefoundation, [
+                    hold_libs=$LIBS
+                    LIBS="$LIBS -framework CoreFoundation"
+                    AC_TRY_LINK([#include <CoreFoundation/CoreFoundation.h>], 
+                        [CFBundleRef b = CFBundleGetMainBundle();], 
+                        tcl_cv_lib_corefoundation=yes, tcl_cv_lib_corefoundation=no)
+                    LIBS=$hold_libs])
+                if test $tcl_cv_lib_corefoundation = yes; then
+                    LIBS="$LIBS -framework CoreFoundation"
+                    AC_DEFINE(HAVE_COREFOUNDATION)
+                fi
+	    fi
+	    AC_CHECK_HEADERS(libkern/OSAtomic.h)
+	    AC_CHECK_FUNCS(OSSpinLockLock)
 	    AC_DEFINE(MAC_OSX_TCL)
-	    AC_DEFINE(HAVE_CFBUNDLE)
 	    AC_DEFINE(USE_VFORK)
 	    AC_DEFINE(TCL_DEFAULT_ENCODING,"utf-8")
+	    # prior to Darwin 7, realpath is not threadsafe, so don't
+	    # use it when threads are enabled, c.f. bug # 711232:
+	    AC_CHECK_FUNC(realpath)
+	    if test "$ac_cv_func_realpath" = yes -a "${TCL_THREADS}" = 1 \
+	            -a `uname -r | awk -F. '{print [$]1}'` -lt 7 ; then
+	        ac_cv_func_realpath=no
+	    fi
 	    ;;
 	NEXTSTEP-*)
 	    SHLIB_CFLAGS=""
Index: unix/tclLoadDyld.c
===================================================================
RCS file: /cvsroot/tcl/tcl/unix/tclLoadDyld.c,v
retrieving revision 1.14
diff -u -p -u -p -r1.14 tclLoadDyld.c
--- unix/tclLoadDyld.c	29 Oct 2002 00:04:08 -0000	1.14
+++ unix/tclLoadDyld.c	14 May 2005 19:15:50 -0000
@@ -24,7 +24,7 @@ typedef struct Tcl_DyldModuleHandle {
 } Tcl_DyldModuleHandle;
 
 typedef struct Tcl_DyldLoadHandle {
-    const struct mach_header *dyld_lib;
+    CONST struct mach_header *dyld_lib;
     Tcl_DyldModuleHandle *firstModuleHandle;
 } Tcl_DyldLoadHandle;
 
@@ -60,7 +60,7 @@ TclpDlopen(interp, pathPtr, loadHandle, 
 				 * this file. */
 {
     Tcl_DyldLoadHandle *dyldLoadHandle;
-    const struct mach_header *dyld_lib;
+    CONST struct mach_header *dyld_lib;
     CONST char *native;
 
     /* 
@@ -90,7 +90,7 @@ TclpDlopen(interp, pathPtr, loadHandle, 
     
     if (!dyld_lib) {
         NSLinkEditErrors editError;
-        char *name, *msg;
+        CONST char *name, *msg;
         NSLinkEditError(&editError, &errno, &name, &msg);
         Tcl_AppendResult(interp, msg, (char *) NULL);
         return TCL_ERROR;
@@ -153,7 +153,7 @@ TclpFindSymbol(interp, loadHandle, symbo
 	}
     } else {
         NSLinkEditErrors editError;
-        char *name, *msg;
+        CONST char *name, *msg;
         NSLinkEditError(&editError, &errno, &name, &msg);
         Tcl_AppendResult(interp, msg, (char *) NULL);
     }
@@ -199,7 +199,7 @@ TclpUnloadFile(loadHandle)
 	dyldModuleHandle = dyldModuleHandle->nextModuleHandle;
 	ckfree(ptr);
     }
-    ckfree(dyldLoadHandle);
+    ckfree((char*) dyldLoadHandle);
 }
 
 /*
Index: unix/tclUnixInit.c
===================================================================
RCS file: /cvsroot/tcl/tcl/unix/tclUnixInit.c,v
retrieving revision 1.34.2.6
diff -u -p -u -p -r1.34.2.6 tclUnixInit.c
--- unix/tclUnixInit.c	5 Jan 2005 22:14:43 -0000	1.34.2.6
+++ unix/tclUnixInit.c	14 May 2005 19:15:50 -0000
@@ -10,7 +10,7 @@
  * RCS: @(#) $Id: tclUnixInit.c,v 1.34.2.6 2005/01/05 22:14:43 dkf Exp $
  */
 
-#if defined(HAVE_CFBUNDLE)
+#if defined(HAVE_COREFOUNDATION)
 #include <CoreFoundation/CoreFoundation.h>
 #endif
 #include "tclInt.h"
@@ -145,9 +145,9 @@ static CONST LocaleTable localeTable[] =
     {NULL, NULL}
 };
 
-#ifdef HAVE_CFBUNDLE
+#ifdef HAVE_COREFOUNDATION
 static int Tcl_MacOSXGetLibraryPath(Tcl_Interp *interp, int maxPathLen, char *tclLibPath);
-#endif /* HAVE_CFBUNDLE */
+#endif /* HAVE_COREFOUNDATION */
 
 
 /*
@@ -441,13 +441,13 @@ CONST char *path;		/* Path to the execut
      */
 			      
     {
-#ifdef HAVE_CFBUNDLE
+#ifdef HAVE_COREFOUNDATION
     char tclLibPath[MAXPATHLEN + 1];
     
     if (Tcl_MacOSXGetLibraryPath(NULL, MAXPATHLEN, tclLibPath) == TCL_OK) {
         str = tclLibPath;
     } else
-#endif /* HAVE_CFBUNDLE */
+#endif /* HAVE_COREFOUNDATION */
     {
         str = defaultLibraryDir;
     }
@@ -739,7 +739,7 @@ TclpSetVariables(interp)
     CONST char *user;
     Tcl_DString ds;
 
-#ifdef HAVE_CFBUNDLE
+#ifdef HAVE_COREFOUNDATION
     char tclLibPath[MAXPATHLEN + 1];
     
     if (Tcl_MacOSXGetLibraryPath(interp, MAXPATHLEN, tclLibPath) == TCL_OK) {
@@ -771,7 +771,7 @@ TclpSetVariables(interp)
             Tcl_StatBuf statBuf;
             if((frameworksURL = CFBundleCopyPrivateFrameworksURL(bundleRef))) {
                 if(CFURLGetFileSystemRepresentation(frameworksURL, TRUE,
-                            tclLibPath, MAXPATHLEN) &&
+                            (unsigned char*) tclLibPath, MAXPATHLEN) &&
                         ! TclOSstat(tclLibPath, &statBuf) &&
                         S_ISDIR(statBuf.st_mode)) {
                     Tcl_SetVar(interp, "tcl_pkgPath", tclLibPath,
@@ -783,7 +783,7 @@ TclpSetVariables(interp)
             }
             if((frameworksURL = CFBundleCopySharedFrameworksURL(bundleRef))) {
                 if(CFURLGetFileSystemRepresentation(frameworksURL, TRUE,
-                            tclLibPath, MAXPATHLEN) &&
+                            (unsigned char*) tclLibPath, MAXPATHLEN) &&
                         ! TclOSstat(tclLibPath, &statBuf) &&
                         S_ISDIR(statBuf.st_mode)) {
                     Tcl_SetVar(interp, "tcl_pkgPath", tclLibPath,
@@ -797,7 +797,7 @@ TclpSetVariables(interp)
         Tcl_SetVar(interp, "tcl_pkgPath", pkgPath,
                 TCL_GLOBAL_ONLY | TCL_APPEND_VALUE);
     } else
-#endif /* HAVE_CFBUNDLE */
+#endif /* HAVE_COREFOUNDATION */
     {
         Tcl_SetVar(interp, "tclDefaultLibrary", defaultLibraryDir, 
                 TCL_GLOBAL_ONLY);
@@ -1053,7 +1053,7 @@ TclpCheckStackSpace()
     return 1;
 }
 
-#ifdef HAVE_CFBUNDLE
+#ifdef HAVE_COREFOUNDATION
 /*
  *----------------------------------------------------------------------
  *
@@ -1080,5 +1080,5 @@ static int Tcl_MacOSXGetLibraryPath(Tcl_
 #endif
     return foundInFramework;
 }
-#endif /* HAVE_CFBUNDLE */
+#endif /* HAVE_COREFOUNDATION */
 
Index: unix/tclUnixNotfy.c
===================================================================
RCS file: /cvsroot/tcl/tcl/unix/tclUnixNotfy.c,v
retrieving revision 1.11.2.8
diff -u -p -u -p -r1.11.2.8 tclUnixNotfy.c
--- unix/tclUnixNotfy.c	26 Apr 2005 00:46:02 -0000	1.11.2.8
+++ unix/tclUnixNotfy.c	14 May 2005 19:15:50 -0000
@@ -14,6 +14,8 @@
  * RCS: @(#) $Id: tclUnixNotfy.c,v 1.11.2.8 2005/04/26 00:46:02 das Exp $
  */
 
+#ifndef HAVE_COREFOUNDATION /* Darwin/Mac OS X CoreFoundation notifier
+                             * is in tclMacOSXNotify.c */
 #include "tclInt.h"
 #include "tclPort.h"
 #include <signal.h> 
@@ -1063,3 +1065,5 @@ NotifierThreadProc(clientData)
     TclpThreadExit (0);
 }
 #endif
+
+#endif /* HAVE_COREFOUNDATION */
Index: unix/tclUnixPort.h
===================================================================
RCS file: /cvsroot/tcl/tcl/unix/tclUnixPort.h,v
retrieving revision 1.27.2.4
diff -u -p -u -p -r1.27.2.4 tclUnixPort.h
--- unix/tclUnixPort.h	17 May 2004 14:26:50 -0000	1.27.2.4
+++ unix/tclUnixPort.h	14 May 2005 19:15:50 -0000
@@ -575,13 +575,6 @@ EXTERN char *          	TclpInetNtoa(str
 #define inet_ntoa(x)	TclpInetNtoa(x)
 #undef TclOSreaddir
 #define TclOSreaddir(x) TclpReaddir(x)
-#ifdef MAC_OSX_TCL
-/* 
- * On Mac OS X, realpath is currently not
- * thread safe, c.f. SF bug # 711232.
- */
-#define NO_REALPATH
-#endif
 #else
 typedef int TclpMutex;
 #define	TclpMutexInit(a)
