# tcl.m4 --
#
#	This file provides a set of autoconf macros to help TEA-enable
#	a Tcl extension.
#
# Copyright (c) 1999-2000 Ajuba Solutions.
# Copyright (c) 2002-2003 ActiveState Corporation.
#
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
#
# RCS: @(#) $Id: tcl.m4,v 1.4 2005/02/09 00:58:27 hobbs2 Exp $

AC_PREREQ(2.50)

#------------------------------------------------------------------------
# TEA_PATH_TCLCONFIG --
#
#	Locate the tclConfig.sh file and perform a sanity check on

    AC_SUBST(TCL_LIB_FLAG)
    AC_SUBST(TCL_LIB_SPEC)

    AC_SUBST(TCL_STUB_LIB_FILE)
    AC_SUBST(TCL_STUB_LIB_FLAG)
    AC_SUBST(TCL_STUB_LIB_SPEC)


    AC_SUBST(TCL_LIBS)
    AC_SUBST(TCL_DEFS)
    AC_SUBST(TCL_EXTRA_CFLAGS)
    AC_SUBST(TCL_LD_FLAGS)
    AC_SUBST(TCL_SHLIB_LD_LIBS)
    #AC_SUBST(TCL_BUILD_LIB_SPEC)
    #AC_SUBST(TCL_BUILD_STUB_LIB_SPEC)

])

#------------------------------------------------------------------------
# TEA_ENABLE_THREADS --
#
#	Specify if thread support should be enabled.  If "yes" is
#	specified as an arg (optional), threads are enabled by default.
#	TCL_THREADS is checked so that if you are compiling an extension
#	against a threaded core, your extension must be compiled threaded
#	as well.
#
# Arguments:
#	none
#	
# Results:
#
#	Adds the following arguments to configure:

#
#------------------------------------------------------------------------

AC_DEFUN(TEA_ENABLE_THREADS, [
    AC_ARG_ENABLE(threads, [  --enable-threads        build with threads],
	[tcl_ok=$enableval], [tcl_ok=$1])

    if test "$tcl_ok" = "yes" -o "${TCL_THREADS}" = 1; then
	TCL_THREADS=1

	if test "${TEA_PLATFORM}" != "windows" ; then
	    # We are always OK on Windows, so check what this platform wants.
	    AC_DEFINE(USE_THREAD_ALLOC)
	    AC_DEFINE(_REENTRANT)
	    AC_DEFINE(_THREAD_SAFE)

    else
	TCL_THREADS=0
    fi
    # Do checking message here to not mess up interleaved configure output
    AC_MSG_CHECKING([for building with threads])
    if test "${TCL_THREADS}" = "1"; then
	AC_DEFINE(TCL_THREADS)
	#LIBS="$LIBS $THREADS_LIBS"
	AC_MSG_RESULT([yes])
    else
	AC_MSG_RESULT([no (default)])
    fi
    # TCL_THREADS sanity checking.  See if our request for building with
    # threads is the same as the way Tcl was built.  If not, warn the user.
    case ${TCL_DEFS} in

#		--enable-symbols
#
#	Defines the following vars:
#		CFLAGS_DEFAULT	Sets to CFLAGS_DEBUG if true
#				Sets to CFLAGS_OPTIMIZE if false
#		LDFLAGS_DEFAULT	Sets to LDFLAGS_DEBUG if true
#				Sets to LDFLAGS_OPTIMIZE if false
#		DBGX		Formerly used as debug library extension;
#				always blank now.
#
#------------------------------------------------------------------------

AC_DEFUN(TEA_ENABLE_SYMBOLS, [
    dnl Make sure we are initialized
    AC_REQUIRE([TEA_CONFIG_CFLAGS])


    DBGX=""




    AC_MSG_CHECKING([for build with symbols])
    AC_ARG_ENABLE(symbols, [  --enable-symbols        build with debugging symbols [--disable-symbols]],    [tcl_ok=$enableval], [tcl_ok=no])
    if test "$tcl_ok" = "no"; then
	CFLAGS_DEFAULT="${CFLAGS_OPTIMIZE}"
	LDFLAGS_DEFAULT="${LDFLAGS_OPTIMIZE}"


	AC_MSG_RESULT([no])
    else
	CFLAGS_DEFAULT="${CFLAGS_DEBUG}"
	LDFLAGS_DEFAULT="${LDFLAGS_DEBUG}"


	if test "$tcl_ok" = "yes"; then
	    AC_MSG_RESULT([yes (standard debugging)])
	fi
    fi
    if test "${TEA_PLATFORM}" != "windows" ; then
	LDFLAGS_DEFAULT="${LDFLAGS}"
    fi

#                       The name of the built export / import file which
#                       should be used to link to the Tcl shared library.
#                       Empty if Tcl is unshared.
#	CFLAGS_DEBUG -
#			Flags used when running the compiler in debug mode
#	CFLAGS_OPTIMIZE -
#			Flags used when running the compiler in optimize mode

#	CFLAGS -	We add CFLAGS to pass to the compiler
#
#	Subst's the following vars:
#		DL_LIBS
#		CFLAGS_DEBUG
#		CFLAGS_OPTIMIZE
#		CFLAGS_WARNING
#
#		STLIB_LD
#		SHLIB_LD
#		SHLIB_CFLAGS

#		LDFLAGS_DEBUG
#		LDFLAGS_OPTIMIZE
#--------------------------------------------------------------------

AC_DEFUN(TEA_CONFIG_CFLAGS, [
    dnl Make sure we are initialized
    AC_REQUIRE([TEA_INIT])

    # Step 2: check for existence of -ldl library.  This is needed because
    # Linux can use either -ldl or -ldld for dynamic loading.

    AC_CHECK_LIB(dl, dlopen, have_dl=yes, have_dl=no)

    # Step 3: set configuration options based on system name and version.
    # This is similar to Tcl's unix/tcl.m4 except that we've added a
    # "windows" case and CC_SEARCH_FLAGS becomes LD_SEARCH_FLAGS for us
    # (and we have no CC_SEARCH_FLAGS).

    do64bit_ok=no
    LDFLAGS_ORIG="$LDFLAGS"
    TCL_EXPORT_FILE_SUFFIX=""
    UNSHARED_LIB_SUFFIX=""
    TCL_TRIM_DOTS='`echo ${PACKAGE_VERSION} | tr -d .`'
    ECHO_VERSION='`echo ${PACKAGE_VERSION}`'
    TCL_LIB_VERSIONS_OK=ok
    CFLAGS_DEBUG=-g

    if test "$GCC" = "yes" ; then
	CFLAGS_OPTIMIZE=-O2
	CFLAGS_WARNING="-Wall -Wno-implicit-int"
    else
	CFLAGS_OPTIMIZE=-O
	CFLAGS_WARNING=""
    fi
    TCL_NEEDS_EXP_FILE=0
    TCL_BUILD_EXP_FILE=""
    TCL_EXP_FILE=""
dnl FIXME: Replace AC_CHECK_PROG with AC_CHECK_TOOL once cross compiling is fixed.
dnl AC_CHECK_TOOL(AR, ar, :)
    AC_CHECK_PROG(AR, ar, ar)
    STLIB_LD='${AR} cr'
    LD_LIBRARY_PATH_VAR="LD_LIBRARY_PATH"
    case $system in
	windows)
	    # This is a 2-stage check to make sure we have the 64-bit SDK
	    # We have to know where the SDK is installed.
	    if test "$do64bit" = "yes" ; then
		if test "x${MSSDK}x" = "xx" ; then
		    MSSDK="C:/Progra~1/Microsoft SDK"
		fi

		# Ensure that this path has no spaces to work in autoconf
		TEA_PATH_NOSPACE(MSSDK, ${MSSDK})
		if test ! -d "${MSSDK}/bin/win64" ; then
		    AC_MSG_WARN([could not find 64-bit SDK to enable 64bit mode])
		    do64bit="no"
		else
		    do64bit_ok="yes"
		fi
	    fi

	    if test "$doWince" != "no" ; then
		if test "$do64bit" = "yes" ; then
		    AC_MSG_ERROR([Windows/CE and 64-bit builds incompatible])
		fi
		if test "$GCC" = "yes" ; then
		    AC_MSG_ERROR([Windows/CE and GCC builds incompatible])
		fi
		TEA_PATH_CELIB
		# Set defaults for common evc4/PPC2003 setup
		# Currently Tcl requires 300+, possibly 420+ for sockets
		CEVERSION=420; 		# could be 211 300 301 400 420 ...
		TARGETCPU=ARMV4;	# could be ARMV4 ARM MIPS SH3 X86 ...
		ARCH=ARM;		# could be ARM MIPS X86EM ...
		PLATFORM="Pocket PC 2003"; # or "Pocket PC 2002"
		if test "$doWince" != "yes"; then
		    # If !yes then the user specified something
		    # Reset ARCH to allow user to skip specifying it
		    ARCH=

		    eval `echo $doWince | awk -F, '{ \
	    if (length([$]1)) { printf "CEVERSION=\"%s\"\n", [$]1; \
	    if ([$]1 < 400)   { printf "PLATFORM=\"Pocket PC 2002\"\n" } }; \
	    if (length([$]2)) { printf "TARGETCPU=\"%s\"\n", toupper([$]2) }; \
	    if (length([$]3)) { printf "ARCH=\"%s\"\n", toupper([$]3) }; \
	    if (length([$]4)) { printf "PLATFORM=\"%s\"\n", [$]4 }; \
		    }'`

		    if test "x${ARCH}" = "x" ; then
			ARCH=$TARGETCPU;
		    fi
		fi
		OSVERSION=WCE$CEVERSION;
	    	if test "x${WCEROOT}" = "x" ; then
			WCEROOT="C:/Program Files/Microsoft eMbedded C++ 4.0"
		    if test ! -d "${WCEROOT}" ; then
			WCEROOT="C:/Program Files/Microsoft eMbedded Tools"
		    fi
		fi
		if test "x${SDKROOT}" = "x" ; then
		    SDKROOT="C:/Program Files/Windows CE Tools"
		    if test ! -d "${SDKROOT}" ; then
			SDKROOT="C:/Windows CE Tools"
		    fi

		fi
		# Ensure that this path has no spaces to work in autoconf
		TEA_PATH_NOSPACE(WCEROOT, ${WCEROOT})
		TEA_PATH_NOSPACE(SDKROOT, ${SDKROOT})

		if test ! -d "${SDKROOT}/${OSVERSION}/${PLATFORM}/Lib/${TARGETCPU}" \
		    -o ! -d "${WCEROOT}/EVC/${OSVERSION}/bin"; then
		    AC_MSG_ERROR([could not find PocketPC SDK or target compiler to enable WinCE mode [$CEVERSION,$TARGETCPU,$ARCH,$PLATFORM]])
		    doWince="no"
		else
		    # We could PATH_NOSPACE these, but that's not important,
		    # as long as we quote them when used.
		    CEINCLUDE="${SDKROOT}/${OSVERSION}/${PLATFORM}/include"
		    if test -d "${CEINCLUDE}/${TARGETCPU}" ; then
			CEINCLUDE="${CEINCLUDE}/${TARGETCPU}"
		    fi
		    CELIBPATH="${SDKROOT}/${OSVERSION}/${PLATFORM}/Lib/${TARGETCPU}"
    		fi
	    fi

	    if test "$GCC" != "yes" ; then
	        if test "${SHARED_BUILD}" = "0" ; then
		    runtime=-MT
	        else
		    runtime=-MD
	        fi

                if test "$do64bit" = "yes" ; then
		    # All this magic is necessary for the Win64 SDK RC1 - hobbs
		    CC="${MSSDK}/Bin/Win64/cl.exe"
		    CFLAGS="${CFLAGS} -I${MSSDK}/Include/prerelease \
			-I${MSSDK}/Include/Win64/crt \
			-I${MSSDK}/Include"
		    RC="${MSSDK}/bin/rc.exe"
		    lflags="-MACHINE:IA64 -LIBPATH:${MSSDK}/Lib/IA64 \
			-LIBPATH:${MSSDK}/Lib/Prerelease/IA64 -nologo"

		    LINKBIN="${MSSDK}/bin/win64/link.exe"
		    CFLAGS_DEBUG="-nologo -Zi -Od -W3 ${runtime}d"
		    CFLAGS_OPTIMIZE="-nologo -O2 -W2 ${runtime}"
		elif test "$doWince" != "no" ; then
		    CEBINROOT="${WCEROOT}/EVC/${OSVERSION}/bin"
		    if test "${TARGETCPU}" = "X86"; then
			CC="${CEBINROOT}/cl.exe"
		    else
			CC="${CEBINROOT}/cl${ARCH}.exe"
		    fi
		    CFLAGS="$CFLAGS -I\"${CELIB_DIR}/inc\" -I\"${CEINCLUDE}\""
		    RC="${WCEROOT}/Common/EVC/bin/rc.exe"
		    arch=`echo ${ARCH} | awk '{print tolower([$]0)}'`
		    defs="${ARCH} _${ARCH}_ ${arch} PALM_SIZE _MT _WINDOWS"
		    if test "${SHARED_BUILD}" = "1" ; then
			# Static CE builds require static celib as well
		    	defs="${defs} _DLL"
		    fi
		    for i in $defs ; do
			AC_DEFINE_UNQUOTED($i)
		    done
		    AC_DEFINE_UNQUOTED(_WIN32_WCE, $CEVERSION)
		    AC_DEFINE_UNQUOTED(UNDER_CE, $CEVERSION)
		    CFLAGS_DEBUG="-nologo -Zi -Od"
		    CFLAGS_OPTIMIZE="-nologo -Ox"
		    lversion=`echo ${CEVERSION} | sed -e 's/\(.\)\(..\)/\1\.\2/'`
		    lflags="-MACHINE:${ARCH} -LIBPATH:\"${CELIBPATH}\" -subsystem:windowsce,${lversion} -nologo"

		    LINKBIN="${CEBINROOT}/link.exe"
		    AC_SUBST(CELIB_DIR)
		else
		    RC="rc"
		    lflags="-nologo"
    		    LINKBIN="link"
		    CFLAGS_DEBUG="-nologo -Z7 -Od -W3 -WX ${runtime}d"
		    CFLAGS_OPTIMIZE="-nologo -O2 -W2 ${runtime}"
		fi
	    fi

	    if test "$GCC" = "yes"; then
		# mingw gcc mode
		RC="windres"
		CFLAGS_DEBUG="-g"
		CFLAGS_OPTIMIZE="-O2 -fomit-frame-pointer"
		SHLIB_LD="$CC -shared"
		UNSHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.a'
		LDFLAGS_CONSOLE="-wl,--subsystem,console ${lflags}"
		LDFLAGS_WINDOW="-wl,--subsystem,windows ${lflags}"
	    else
		SHLIB_LD="${LINKBIN} -dll ${lflags}"
		# link -lib only works when -lib is the first arg
		STLIB_LD="${LINKBIN} -lib ${lflags}"
		UNSHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.lib'

		PATHTYPE=-w
		# For information on what debugtype is most useful, see:
		# http://msdn.microsoft.com/library/en-us/dnvc60/html/gendepdebug.asp
		# This essentially turns it all on.
		LDFLAGS_DEBUG="-debug:full -debugtype:both -warn:2"
		LDFLAGS_OPTIMIZE="-release"
		if test "$doWince" != "no" ; then
		    LDFLAGS_CONSOLE="-link ${lflags}"
		    LDFLAGS_WINDOW=${LDFLAGS_CONSOLE}
		else
		    LDFLAGS_CONSOLE="-link -subsystem:console ${lflags}"
		    LDFLAGS_WINDOW="-link -subsystem:windows ${lflags}"
		fi
	    fi

	    SHLIB_LD_LIBS='${LIBS}'
	    SHLIB_SUFFIX=".dll"
	    SHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.dll'

	    TCL_LIB_VERSIONS_OK=nodots
	    # Bogus to avoid getting this turned off
	    DL_OBJS="tclLoadNone.obj"
    	    ;;
	AIX-*)
	    if test "${TCL_THREADS}" = "1" -a "$GCC" != "yes" ; then
		# AIX requires the _r compiler when gcc isn't being used
		if test "${CC}" != "cc_r" ; then
		    CC=${CC}_r
		fi
		AC_MSG_RESULT([Using $CC for compiling with threads])
	    fi
	    LIBS="$LIBS -lc"
	    SHLIB_CFLAGS=""
	    SHLIB_SUFFIX=".so"
	    SHLIB_LD_LIBS='${LIBS}'

	    DL_OBJS="tclLoadDl.o"

	    LD_LIBRARY_PATH_VAR="LIBPATH"

	    # AIX v<=4.1 has some different flags than 4.2+
	    if test "$system" = "AIX-4.1" -o "`uname -v`" -lt "4" ; then
		#LIBOBJS="$LIBOBJS tclLoadAix.o"
		AC_LIBOBJ([tclLoadAix])
		DL_LIBS="-lld"
	    fi

	    # Check to enable 64-bit flags for compiler/linker on AIX 4+
	    if test "$do64bit" = "yes" -a "`uname -v`" -gt "3" ; then
		if test "$GCC" = "yes" ; then
		    AC_MSG_WARN("64bit mode not supported with GCC on $system")
		else 
		    do64bit_ok=yes
		    CFLAGS="$CFLAGS -q64"
		    LDFLAGS="$LDFLAGS -q64"
		    RANLIB="${RANLIB} -X64"
		    AR="${AR} -X64"
		    SHLIB_LD_FLAGS="-b64"
		fi
	    fi

	    if test "`uname -m`" = "ia64" ; then
		# AIX-5 uses ELF style dynamic libraries on IA-64, but not PPC
		SHLIB_LD="/usr/ccs/bin/ld -G -z text"
		# AIX-5 has dl* in libc.so
		DL_LIBS=""
		if test "$GCC" = "yes" ; then
		    LD_SEARCH_FLAGS='-Wl,-R,${LIB_RUNTIME_DIR}'
		else
		    LD_SEARCH_FLAGS='-R${LIB_RUNTIME_DIR}'
		fi
	    else
		if test "$GCC" = "yes" ; then
		    SHLIB_LD="gcc -shared"
		else
		    SHLIB_LD="/bin/ld -bhalt:4 -bM:SRE -bE:lib.exp -H512 -T512 -bnoentry"
		fi
		SHLIB_LD="${TCL_SRC_DIR}/unix/ldAix ${SHLIB_LD} ${SHLIB_LD_FLAGS}"
		DL_LIBS="-ldl"
		LD_SEARCH_FLAGS='-L${LIB_RUNTIME_DIR}'
		TCL_NEEDS_EXP_FILE=1
		TCL_EXPORT_FILE_SUFFIX='${PACKAGE_VERSION}.exp'
	    fi

	    # On AIX <=v4 systems, libbsd.a has to be linked in to support
	    # non-blocking file IO.  This library has to be linked in after
	    # the MATH_LIBS or it breaks the pow() function.  The way to
	    # insure proper sequencing, is to add it to the tail of MATH_LIBS.
	    # This library also supplies gettimeofday.
	    #
	    # AIX does not have a timezone field in struct tm. When the AIX
	    # bsd library is used, the timezone global and the gettimeofday
	    # methods are to be avoided for timezone deduction instead, we
	    # deduce the timezone by comparing the localtime result on a
	    # known GMT value.

	    AC_CHECK_LIB(bsd, gettimeofday, libbsd=yes, libbsd=no)
	    if test $libbsd = yes; then
	    	MATH_LIBS="$MATH_LIBS -lbsd"
	    	AC_DEFINE(USE_DELTA_FOR_TZ)
	    fi
	    ;;
	BeOS*)
	    SHLIB_CFLAGS="-fPIC"
	    SHLIB_LD="${CC} -nostart"
	    SHLIB_LD_LIBS='${LIBS}'
	    SHLIB_SUFFIX=".so"
	    DL_OBJS="tclLoadDl.o"
	    DL_LIBS="-ldl"
	    ;;
	BSD/OS-2.1*|BSD/OS-3*)
	    SHLIB_CFLAGS=""
	    SHLIB_LD="shlicc -r"
	    SHLIB_LD_LIBS='${LIBS}'
	    SHLIB_SUFFIX=".so"
	    DL_OBJS="tclLoadDl.o"
	    DL_LIBS="-ldl"

	    LD_SEARCH_FLAGS=""
	    ;;
	BSD/OS-4.*)
	    SHLIB_CFLAGS="-export-dynamic -fPIC"
	    SHLIB_LD="cc -shared"
	    SHLIB_LD_LIBS='${LIBS}'
	    SHLIB_SUFFIX=".so"
	    DL_OBJS="tclLoadDl.o"
	    DL_LIBS="-ldl"
	    LDFLAGS="$LDFLAGS -export-dynamic"
	    LD_SEARCH_FLAGS=""
	    ;;
	dgux*)
	    SHLIB_CFLAGS="-K PIC"
	    SHLIB_LD="cc -G"
	    SHLIB_LD_LIBS=""
	    SHLIB_SUFFIX=".so"
	    DL_OBJS="tclLoadDl.o"
	    DL_LIBS="-ldl"

	    LD_SEARCH_FLAGS=""
	    ;;
	HP-UX-*.11.*)
	    # Use updated header definitions where possible
	    AC_DEFINE(_XOPEN_SOURCE_EXTENDED)

	    SHLIB_SUFFIX=".sl"
	    AC_CHECK_LIB(dld, shl_load, tcl_ok=yes, tcl_ok=no)
	    if test "$tcl_ok" = yes; then
		SHLIB_CFLAGS="+z"
		SHLIB_LD="ld -b"
		SHLIB_LD_LIBS='${LIBS}'
		DL_OBJS="tclLoadShl.o"
		DL_LIBS="-ldld"
		LDFLAGS="$LDFLAGS -Wl,-E"
		LD_SEARCH_FLAGS='-Wl,+s,+b,${LIB_RUNTIME_DIR}:.'
		LD_LIBRARY_PATH_VAR="SHLIB_PATH"
	    fi
	    if test "$GCC" = "yes" ; then
		SHLIB_LD="gcc -shared"
		SHLIB_LD_LIBS='${LIBS}'
		LD_SEARCH_FLAGS=''
	    fi

	    # Users may want PA-RISC 1.1/2.0 portable code - needs HP cc
	    #CFLAGS="$CFLAGS +DAportable"

	    # Check to enable 64-bit flags for compiler/linker
	    if test "$do64bit" = "yes" ; then
		if test "$GCC" = "yes" ; then
		    hpux_arch=`${CC} -dumpmachine`
		    case $hpux_arch in
			hppa64*)
			    # 64-bit gcc in use.  Fix flags for GNU ld.
			    do64bit_ok=yes
			    SHLIB_LD="${CC} -shared"
			    SHLIB_LD_LIBS='${LIBS}'
			    LD_SEARCH_FLAGS=''
			    ;;
			*)
			    AC_MSG_WARN("64bit mode not supported with GCC on $system")
			    ;;
		    esac
		else
		    do64bit_ok=yes

		    CFLAGS="$CFLAGS +DD64"
		    LDFLAGS="$LDFLAGS +DD64"




		fi
	    fi
	    ;;
	HP-UX-*.08.*|HP-UX-*.09.*|HP-UX-*.10.*)
	    SHLIB_SUFFIX=".sl"
	    AC_CHECK_LIB(dld, shl_load, tcl_ok=yes, tcl_ok=no)
	    if test "$tcl_ok" = yes; then
		SHLIB_CFLAGS="+z"
		SHLIB_LD="ld -b"
		SHLIB_LD_LIBS=""
		DL_OBJS="tclLoadShl.o"
		DL_LIBS="-ldld"
		LDFLAGS="$LDFLAGS -Wl,-E"
		LD_SEARCH_FLAGS='-Wl,+s,+b,${LIB_RUNTIME_DIR}:.'
	    fi
	    LD_LIBRARY_PATH_VAR="SHLIB_PATH"
	    ;;
	IRIX-4.*)
	    SHLIB_CFLAGS="-G 0"
	    SHLIB_SUFFIX=".a"
	    SHLIB_LD="echo tclLdAout $CC \{$SHLIB_CFLAGS\} | `pwd`/tclsh -r -G 0"
	    SHLIB_LD_LIBS='${LIBS}'
	    DL_OBJS="tclLoadAout.o"
	    DL_LIBS=""
	    LDFLAGS="$LDFLAGS -Wl,-D,08000000"
	    LD_SEARCH_FLAGS='-L${LIB_RUNTIME_DIR}'
	    SHARED_LIB_SUFFIX='${PACKAGE_VERSION}.a'
	    ;;
	IRIX-5.*)
	    SHLIB_CFLAGS=""
	    SHLIB_LD="ld -shared -rdata_shared"
	    SHLIB_LD_LIBS='${LIBS}'
	    SHLIB_SUFFIX=".so"
	    DL_OBJS="tclLoadDl.o"
	    DL_LIBS=""
	    LD_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'


	    ;;
	IRIX-6.*|IRIX64-6.5*)
	    SHLIB_CFLAGS=""
	    SHLIB_LD="ld -n32 -shared -rdata_shared"
	    SHLIB_LD_LIBS='${LIBS}'
	    SHLIB_SUFFIX=".so"
	    DL_OBJS="tclLoadDl.o"
	    DL_LIBS=""
	    LD_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
	    if test "$GCC" = "yes" ; then
		CFLAGS="$CFLAGS -mabi=n32"
		LDFLAGS="$LDFLAGS -mabi=n32"
	    else
		case $system in
		    IRIX-6.3)
			# Use to build 6.2 compatible binaries on 6.3.
			CFLAGS="$CFLAGS -n32 -D_OLD_TERMIOS"
			;;
		    *)
			CFLAGS="$CFLAGS -n32"
			;;
		esac
		LDFLAGS="$LDFLAGS -n32"
	    fi
	    ;;
	IRIX64-6.*)
	    SHLIB_CFLAGS=""
	    SHLIB_LD="ld -n32 -shared -rdata_shared"
	    SHLIB_LD_LIBS='${LIBS}'
	    SHLIB_SUFFIX=".so"
	    DL_OBJS="tclLoadDl.o"
	    DL_LIBS=""

	    LD_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'

	    # Check to enable 64-bit flags for compiler/linker

	    if test "$do64bit" = "yes" ; then
	        if test "$GCC" = "yes" ; then
	            AC_MSG_WARN([64bit mode not supported by gcc])
	        else
	            do64bit_ok=yes
	            SHLIB_LD="ld -64 -shared -rdata_shared"
	            CFLAGS="$CFLAGS -64"
	            LDFLAGS="$LDFLAGS -64"
	        fi
	    fi
	    ;;
	Linux*)
	    SHLIB_CFLAGS="-fPIC"
	    SHLIB_LD_LIBS='${LIBS}'
	    SHLIB_SUFFIX=".so"

	    CFLAGS_OPTIMIZE="-O2 -fomit-frame-pointer"
	    # egcs-2.91.66 on Redhat Linux 6.0 generates lots of warnings 
	    # when you inline the string and math operations.  Turn this off to
	    # get rid of the warnings.

	    #CFLAGS_OPTIMIZE="${CFLAGS_OPTIMIZE} -D__NO_STRING_INLINES -D__NO_MATH_INLINES"

	    if test "$have_dl" = yes; then
		SHLIB_LD="${CC} -shared"
		DL_OBJS="tclLoadDl.o"
		DL_LIBS="-ldl"
		LDFLAGS="$LDFLAGS -Wl,--export-dynamic"
		LD_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
	    else
		AC_CHECK_HEADER(dld.h, [
		    SHLIB_LD="ld -shared"
		    DL_OBJS="tclLoadDld.o"
		    DL_LIBS="-ldld"

		    LD_SEARCH_FLAGS=""])
	    fi
	    if test "`uname -m`" = "alpha" ; then
		CFLAGS="$CFLAGS -mieee"
	    fi

	    # The combo of gcc + glibc has a bug related
	    # to inlining of functions like strtod(). The
	    # -fno-builtin flag should address this problem
	    # but it does not work. The -fno-inline flag
	    # is kind of overkill but it works.
	    # Disable inlining only when one of the
	    # files in compat/*.c is being linked in.
	    if test x"${USE_COMPAT}" != x ; then
	        CFLAGS="$CFLAGS -fno-inline"
	    fi

	    ;;
	GNU*)
	    SHLIB_CFLAGS="-fPIC"
	    SHLIB_LD_LIBS='${LIBS}'
	    SHLIB_SUFFIX=".so"

	    if test "$have_dl" = yes; then
		SHLIB_LD="${CC} -shared"
		DL_OBJS=""
		DL_LIBS="-ldl"
		LDFLAGS="$LDFLAGS -Wl,--export-dynamic"
		LD_SEARCH_FLAGS=""
	    else
		AC_CHECK_HEADER(dld.h, [
		    SHLIB_LD="ld -shared"
		    DL_OBJS=""
		    DL_LIBS="-ldld"

		    LD_SEARCH_FLAGS=""])
	    fi
	    if test "`uname -m`" = "alpha" ; then
		CFLAGS="$CFLAGS -mieee"
	    fi
	    ;;
	MP-RAS-02*)
	    SHLIB_CFLAGS="-K PIC"
	    SHLIB_LD="cc -G"
	    SHLIB_LD_LIBS=""
	    SHLIB_SUFFIX=".so"
	    DL_OBJS="tclLoadDl.o"
	    DL_LIBS="-ldl"

	    LD_SEARCH_FLAGS=""
	    ;;
	MP-RAS-*)
	    SHLIB_CFLAGS="-K PIC"
	    SHLIB_LD="cc -G"
	    SHLIB_LD_LIBS=""
	    SHLIB_SUFFIX=".so"
	    DL_OBJS="tclLoadDl.o"
	    DL_LIBS="-ldl"
	    LDFLAGS="$LDFLAGS -Wl,-Bexport"
	    LD_SEARCH_FLAGS=""
	    ;;
	NetBSD-*|FreeBSD-[[1-2]].*)
	    # Not available on all versions:  check for include file.
	    AC_CHECK_HEADER(dlfcn.h, [
		# NetBSD/SPARC needs -fPIC, -fpic will not do.
		SHLIB_CFLAGS="-fPIC"
		SHLIB_LD="ld -Bshareable -x"
		SHLIB_LD_LIBS=""
		SHLIB_SUFFIX=".so"
		DL_OBJS="tclLoadDl.o"
		DL_LIBS=""

		LD_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
		AC_MSG_CHECKING([for ELF])
		AC_EGREP_CPP(yes, [
#ifdef __ELF__
	yes
#endif
		],
		    AC_MSG_RESULT([yes])
		    SHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.so',
		    AC_MSG_RESULT([no])
		    SHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.so.1.0'
		)
	    ], [
		SHLIB_CFLAGS=""
		SHLIB_LD="echo tclLdAout $CC \{$SHLIB_CFLAGS\} | `pwd`/tclsh -r"
		SHLIB_LD_LIBS='${LIBS}'
		SHLIB_SUFFIX=".a"
		DL_OBJS="tclLoadAout.o"
		DL_LIBS=""

		LD_SEARCH_FLAGS='-L${LIB_RUNTIME_DIR}'
		SHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.a'
	    ])

	    # FreeBSD doesn't handle version numbers with dots.

	    UNSHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.a'
	    TCL_LIB_VERSIONS_OK=nodots
	    ;;
	OpenBSD-*)
	    SHLIB_LD="${CC} -shared"
	    SHLIB_LD_LIBS='${LIBS}'
	    SHLIB_SUFFIX=".so"
	    DL_OBJS="tclLoadDl.o"
	    DL_LIBS=""

	    LD_SEARCH_FLAGS=""
	    AC_MSG_CHECKING(for ELF)
	    AC_EGREP_CPP(yes, [
#ifdef __ELF__
	yes
#endif
	    ],
		[AC_MSG_RESULT(yes)
		SHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.so.1.0'],
		[AC_MSG_RESULT(no)
		SHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.so.1.0']
	    )

	    # OpenBSD doesn't do version numbers with dots.
	    UNSHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.a'
	    TCL_LIB_VERSIONS_OK=nodots
	    ;;
	FreeBSD-*)
	    # FreeBSD 3.* and greater have ELF.
	    SHLIB_CFLAGS="-fPIC"
	    SHLIB_LD="ld -Bshareable -x"
	    SHLIB_LD_LIBS='${LIBS}'
	    SHLIB_SUFFIX=".so"
	    DL_OBJS="tclLoadDl.o"
	    DL_LIBS=""
	    LDFLAGS="$LDFLAGS -export-dynamic"
	    LD_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
	    if test "${TCL_THREADS}" = "1" ; then
		# The -pthread needs to go in the CFLAGS, not LIBS
		LIBS=`echo $LIBS | sed s/-pthread//`
		CFLAGS="$CFLAGS -pthread"
	    	LDFLAGS="$LDFLAGS -pthread"
	    fi
	    case $system in
	    FreeBSD-3.*)
	    	# FreeBSD-3 doesn't handle version numbers with dots.
	    	UNSHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.a'
	    	SHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.so'
	    	TCL_LIB_VERSIONS_OK=nodots
		;;
	    esac
	    ;;
	Darwin-*)
	    SHLIB_CFLAGS="-fno-common"
	    SHLIB_LD="cc -dynamiclib \${LDFLAGS}"

	    SHLIB_LD_LIBS='${LIBS}'
	    SHLIB_SUFFIX=".dylib"
	    DL_OBJS="tclLoadDyld.o"
	    DL_LIBS=""
	    LDFLAGS="$LDFLAGS -prebind -Wl,-search_paths_first"
	    LD_SEARCH_FLAGS=""
	    LD_LIBRARY_PATH_VAR="DYLD_LIBRARY_PATH"
	    CFLAGS_OPTIMIZE="-Os"

	    ;;
	NEXTSTEP-*)
	    SHLIB_CFLAGS=""
	    SHLIB_LD="cc -nostdlib -r"
	    SHLIB_LD_LIBS=""
	    SHLIB_SUFFIX=".so"
	    DL_OBJS="tclLoadNext.o"
	    DL_LIBS=""

	    LD_SEARCH_FLAGS=""
	    ;;
	OS/390-*)
	    CFLAGS_OPTIMIZE=""      # Optimizer is buggy
	    AC_DEFINE(_OE_SOCKETS)  # needed in sys/socket.h
	    ;;      
	OSF1-1.0|OSF1-1.1|OSF1-1.2)
	    # OSF/1 1.[012] from OSF, and derivatives, including Paragon OSF/1
	    SHLIB_CFLAGS=""
	    # Hack: make package name same as library name
	    SHLIB_LD='ld -R -export $@:'
	    SHLIB_LD_LIBS=""
	    SHLIB_SUFFIX=".so"
	    DL_OBJS="tclLoadOSF.o"
	    DL_LIBS=""

	    LD_SEARCH_FLAGS=""
	    ;;
	OSF1-1.*)
	    # OSF/1 1.3 from OSF using ELF, and derivatives, including AD2
	    SHLIB_CFLAGS="-fPIC"
	    if test "$SHARED_BUILD" = "1" ; then
	        SHLIB_LD="ld -shared"
	    else
	        SHLIB_LD="ld -non_shared"
	    fi
	    SHLIB_LD_LIBS=""
	    SHLIB_SUFFIX=".so"
	    DL_OBJS="tclLoadDl.o"
	    DL_LIBS=""

	    LD_SEARCH_FLAGS=""
	    ;;
	OSF1-V*)
	    # Digital OSF/1
	    SHLIB_CFLAGS=""
	    if test "$SHARED_BUILD" = "1" ; then
	        SHLIB_LD='ld -shared -expect_unresolved "*"'
	    else
	        SHLIB_LD='ld -non_shared -expect_unresolved "*"'
	    fi
	    SHLIB_LD_LIBS=""
	    SHLIB_SUFFIX=".so"
	    DL_OBJS="tclLoadDl.o"
	    DL_LIBS=""

	    LD_SEARCH_FLAGS='-rpath ${LIB_RUNTIME_DIR}'
	    if test "$GCC" = "yes" ; then
		CFLAGS="$CFLAGS -mieee"
            else
		CFLAGS="$CFLAGS -DHAVE_TZSET -std1 -ieee"
	    fi
	    # see pthread_intro(3) for pthread support on osf1, k.furukawa
	    if test "${TCL_THREADS}" = "1" ; then
		CFLAGS="$CFLAGS -DHAVE_PTHREAD_ATTR_SETSTACKSIZE"
		CFLAGS="$CFLAGS -DTCL_THREAD_STACK_MIN=PTHREAD_STACK_MIN*64"
		LIBS=`echo $LIBS | sed s/-lpthreads//`
		if test "$GCC" = "yes" ; then
		    LIBS="$LIBS -lpthread -lmach -lexc"
		else
		    CFLAGS="$CFLAGS -pthread"
		    LDFLAGS="$LDFLAGS -pthread"
		fi
	    fi

	    ;;
	QNX-6*)
	    # QNX RTP
	    # This may work for all QNX, but it was only reported for v6.
	    SHLIB_CFLAGS="-fPIC"
	    SHLIB_LD="ld -Bshareable -x"
	    SHLIB_LD_LIBS=""
	    SHLIB_SUFFIX=".so"
	    DL_OBJS="tclLoadDl.o"
	    # dlopen is in -lc on QNX
	    DL_LIBS=""

	    LD_SEARCH_FLAGS=""
	    ;;
	RISCos-*)
	    SHLIB_CFLAGS="-G 0"
	    SHLIB_LD="echo tclLdAout $CC \{$SHLIB_CFLAGS\} | `pwd`/tclsh -r -G 0"
	    SHLIB_LD_LIBS='${LIBS}'
	    SHLIB_SUFFIX=".a"
	    DL_OBJS="tclLoadAout.o"
	    DL_LIBS=""
	    LDFLAGS="$LDFLAGS -Wl,-D,08000000"
	    LD_SEARCH_FLAGS='-L${LIB_RUNTIME_DIR}'
	    ;;
	SCO_SV-3.2*)
	    # Note, dlopen is available only on SCO 3.2.5 and greater. However,
	    # this test works, since "uname -s" was non-standard in 3.2.4 and
	    # below.
	    if test "$GCC" = "yes" ; then
	    	SHLIB_CFLAGS="-fPIC -melf"
	    	LDFLAGS="$LDFLAGS -melf -Wl,-Bexport"
	    else
	    	SHLIB_CFLAGS="-Kpic -belf"
	    	LDFLAGS="$LDFLAGS -belf -Wl,-Bexport"
	    fi
	    SHLIB_LD="ld -G"
	    SHLIB_LD_LIBS=""
	    SHLIB_SUFFIX=".so"
	    DL_OBJS="tclLoadDl.o"
	    DL_LIBS=""
	    LD_SEARCH_FLAGS=""
	    ;;
	SINIX*5.4*)
	    SHLIB_CFLAGS="-K PIC"
	    SHLIB_LD="cc -G"
	    SHLIB_LD_LIBS=""
	    SHLIB_SUFFIX=".so"
	    DL_OBJS="tclLoadDl.o"
	    DL_LIBS="-ldl"

	    LD_SEARCH_FLAGS=""
	    ;;
	SunOS-4*)
	    SHLIB_CFLAGS="-PIC"
	    SHLIB_LD="ld"
	    SHLIB_LD_LIBS=""
	    SHLIB_SUFFIX=".so"
	    DL_OBJS="tclLoadDl.o"
	    DL_LIBS="-ldl"

	    LD_SEARCH_FLAGS='-L${LIB_RUNTIME_DIR}'

	    # SunOS can't handle version numbers with dots in them in library
	    # specs, like -ltcl7.5, so use -ltcl75 instead.  Also, it
	    # requires an extra version number at the end of .so file names.
	    # So, the library has to have a name like libtcl75.so.1.0

	    SHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.so.1.0'
	    UNSHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.a'
	    TCL_LIB_VERSIONS_OK=nodots
	    ;;
	SunOS-5.[[0-6]]*)

	    # Note: If _REENTRANT isn't defined, then Solaris
	    # won't define thread-safe library routines.

	    AC_DEFINE(_REENTRANT)
	    AC_DEFINE(_POSIX_PTHREAD_SEMANTICS)

	    SHLIB_CFLAGS="-KPIC"

	    # Note: need the LIBS below, otherwise Tk won't find Tcl's
	    # symbols when dynamically loaded into tclsh.

	    SHLIB_LD_LIBS='${LIBS}'
	    SHLIB_SUFFIX=".so"
	    DL_OBJS="tclLoadDl.o"
	    DL_LIBS="-ldl"

	    if test "$GCC" = "yes" ; then
		SHLIB_LD="$CC -shared"
		LD_SEARCH_FLAGS='-Wl,-R,${LIB_RUNTIME_DIR}'
	    else
		SHLIB_LD="/usr/ccs/bin/ld -G -z text"
		LD_SEARCH_FLAGS='-R ${LIB_RUNTIME_DIR}'
	    fi
	    ;;
	SunOS-5*)

	    # Note: If _REENTRANT isn't defined, then Solaris
	    # won't define thread-safe library routines.

	    AC_DEFINE(_REENTRANT)
	    AC_DEFINE(_POSIX_PTHREAD_SEMANTICS)

	    SHLIB_CFLAGS="-KPIC"

    
	    # Check to enable 64-bit flags for compiler/linker
	    if test "$do64bit" = "yes" ; then
		arch=`isainfo`
		if test "$arch" = "sparcv9 sparc" ; then
			if test "$GCC" = "yes" ; then
			    if test "`gcc -dumpversion` | awk -F. '{print $1}'" -lt "3" ; then
				AC_MSG_WARN([64bit mode not supported with GCC < 3.2 on $system])
			    else
				do64bit_ok=yes
				CFLAGS="$CFLAGS -m64 -mcpu=v9"
				LDFLAGS="$LDFLAGS -m64 -mcpu=v9"
				SHLIB_CFLAGS="-fPIC"
			    fi
			else
			    do64bit_ok=yes
			    if test "$do64bitVIS" = "yes" ; then
				CFLAGS="$CFLAGS -xarch=v9a"
			    	LDFLAGS="$LDFLAGS -xarch=v9a"
			    else
				CFLAGS="$CFLAGS -xarch=v9"
			    	LDFLAGS="$LDFLAGS -xarch=v9"
			    fi
			fi
		else
		    AC_MSG_WARN("64bit mode only supported sparcv9 system")
		fi
	    fi
	    
	    # Note: need the LIBS below, otherwise Tk won't find Tcl's
	    # symbols when dynamically loaded into tclsh.

	    SHLIB_LD_LIBS='${LIBS}'
	    SHLIB_SUFFIX=".so"
	    DL_OBJS="tclLoadDl.o"
	    DL_LIBS="-ldl"
	    if test "$GCC" = "yes" ; then
		SHLIB_LD="$CC -shared"
		LD_SEARCH_FLAGS='-Wl,-R,${LIB_RUNTIME_DIR}'
		if test "$do64bit" = "yes" ; then
		    # We need to specify -static-libgcc or we need to
		    # add the path to the sparv9 libgcc.
		    # JH: static-libgcc is necessary for core Tcl, but may
		    # not be necessary for extensions.
		    SHLIB_LD="$SHLIB_LD -m64 -mcpu=v9 -static-libgcc"
		    # for finding sparcv9 libgcc, get the regular libgcc
		    # path, remove so name and append 'sparcv9'
		    #v9gcclibdir="`gcc -print-file-name=libgcc_s.so` | ..."
		    #LD_SEARCH_FLAGS="${LD_SEARCH_FLAGS},-R,$v9gcclibdir"
		fi
	    else
		SHLIB_LD="/usr/ccs/bin/ld -G -z text"
		LD_SEARCH_FLAGS='-R ${LIB_RUNTIME_DIR}'
	    fi
	    ;;
	ULTRIX-4.*)
	    SHLIB_CFLAGS="-G 0"
	    SHLIB_SUFFIX=".a"
	    SHLIB_LD="echo tclLdAout $CC \{$SHLIB_CFLAGS\} | `pwd`/tclsh -r -G 0"
	    SHLIB_LD_LIBS='${LIBS}'
	    DL_OBJS="tclLoadAout.o"
	    DL_LIBS=""
	    LDFLAGS="$LDFLAGS -Wl,-D,08000000"
	    LD_SEARCH_FLAGS='-L${LIB_RUNTIME_DIR}'
	    if test "$GCC" != "yes" ; then
		CFLAGS="$CFLAGS -DHAVE_TZSET -std1"
	    fi
	    ;;
	UNIX_SV* | UnixWare-5*)
	    SHLIB_CFLAGS="-KPIC"
	    SHLIB_LD="cc -G"
	    SHLIB_LD_LIBS=""
	    SHLIB_SUFFIX=".so"
	    DL_OBJS="tclLoadDl.o"
	    DL_LIBS="-ldl"
	    # Some UNIX_SV* systems (unixware 1.1.2 for example) have linkers
	    # that don't grok the -Bexport option.  Test that it does.
	    hold_ldflags=$LDFLAGS
	    AC_MSG_CHECKING(for ld accepts -Bexport flag)
	    LDFLAGS="$LDFLAGS -Wl,-Bexport"
	    AC_TRY_LINK(, [int i;], [found=yes],
			[LDFLAGS=$hold_ldflags found=no])
	    AC_MSG_RESULT([$found])





	    LD_SEARCH_FLAGS=""
	    ;;
    esac

    if test "$do64bit" = "yes" -a "$do64bit_ok" = "no" ; then
    AC_MSG_WARN("64bit support being disabled -- don\'t know magic for this platform")
    fi

	echo "Can't figure out how to do dynamic loading or shared libraries"
	echo "on this system."
	SHLIB_CFLAGS=""
	SHLIB_LD=""
	SHLIB_SUFFIX=""
	DL_OBJS="tclLoadNone.o"
	DL_LIBS=""
	LDFLAGS="$LDFLAGS_ORIG"
	LD_SEARCH_FLAGS=""
	BUILD_DLTEST=""
    fi

    # If we're running gcc, then change the C flags for compiling shared
    # libraries to the right flags for gcc, instead of those for the
    # standard manufacturer compiler.

    if test "$DL_OBJS" != "tclLoadNone.o" ; then
	if test "$GCC" = "yes" ; then
	    case $system in
		AIX-*)
		    ;;
		BSD/OS*)
		    ;;
		IRIX*)
		    ;;
		NetBSD-*|FreeBSD-*)
		    ;;
		Darwin-*)
		    ;;
		RISCos-*)
		    ;;
		SCO_SV-3.2*)
		    ;;
		ULTRIX-4.*)
		    ;;
		windows)
		    ;;
		*)
		    SHLIB_CFLAGS="-fPIC"
		    ;;
	    esac
	fi
    fi

    if test "$SHARED_LIB_SUFFIX" = "" ; then
	SHARED_LIB_SUFFIX='${PACKAGE_VERSION}${SHLIB_SUFFIX}'
    fi
    if test "$UNSHARED_LIB_SUFFIX" = "" ; then
	UNSHARED_LIB_SUFFIX='${PACKAGE_VERSION}.a'
    fi

    AC_SUBST(DL_LIBS)
    AC_SUBST(CFLAGS_DEBUG)
    AC_SUBST(CFLAGS_OPTIMIZE)
    AC_SUBST(CFLAGS_WARNING)


    AC_SUBST(STLIB_LD)
    AC_SUBST(SHLIB_LD)
    AC_SUBST(SHLIB_CFLAGS)

    AC_SUBST(SHLIB_LD_LIBS)
    AC_SUBST(LDFLAGS_DEBUG)
    AC_SUBST(LDFLAGS_OPTIMIZE)
    AC_SUBST(LD_LIBRARY_PATH_VAR)

    # These must be called after we do the basic CFLAGS checks and
    # verify any possible 64-bit or similar switches are necessary
    TEA_TCL_EARLY_FLAGS
    TEA_TCL_64BIT_FLAGS
])

#--------------------------------------------------------------------
# TEA_SERIAL_PORT
#
#	Determine which interface to use to talk to the serial port.
#	Note that #include lines must begin in leftmost column for

#	
# Results:
#
#	Defines some of the following vars:
#		NO_DIRENT_H
#		NO_ERRNO_H
#		NO_VALUES_H
#		HAVE_LIMITS_H or NO_LIMITS_H
#		NO_STDLIB_H
#		NO_STRING_H
#		NO_SYS_WAIT_H
#		NO_DLFCN_H

#		HAVE_SYS_PARAM_H
#
#		HAVE_STRING_H ?
#
# tkUnixPort.h checks for HAVE_LIMITS_H, so do both HAVE and
# CHECK on limits.h
#--------------------------------------------------------------------

AC_DEFUN(TEA_MISSING_POSIX_HEADERS, [
    AC_MSG_CHECKING([dirent.h])
    AC_TRY_LINK([#include <sys/types.h>
#include <dirent.h>], [
#ifndef _POSIX_SOURCE

	AC_DEFINE(NO_DIRENT_H)
    fi

    AC_MSG_RESULT([$tcl_ok])
    AC_CHECK_HEADER(errno.h, , [AC_DEFINE(NO_ERRNO_H)])
    AC_CHECK_HEADER(float.h, , [AC_DEFINE(NO_FLOAT_H)])
    AC_CHECK_HEADER(values.h, , [AC_DEFINE(NO_VALUES_H)])
    AC_CHECK_HEADER(limits.h,
	[AC_DEFINE(HAVE_LIMITS_H)], [AC_DEFINE(NO_LIMITS_H)])
    AC_CHECK_HEADER(stdlib.h, tcl_ok=1, tcl_ok=0)
    AC_EGREP_HEADER(strtol, stdlib.h, , tcl_ok=0)
    AC_EGREP_HEADER(strtoul, stdlib.h, , tcl_ok=0)
    AC_EGREP_HEADER(strtod, stdlib.h, , tcl_ok=0)
    if test $tcl_ok = 0; then
	AC_DEFINE(NO_STDLIB_H)
    fi

	AC_DEFINE(NO_STRING_H)
    fi

    AC_CHECK_HEADER(sys/wait.h, , [AC_DEFINE(NO_SYS_WAIT_H)])
    AC_CHECK_HEADER(dlfcn.h, , [AC_DEFINE(NO_DLFCN_H)])

    # OS/390 lacks sys/param.h (and doesn't need it, by chance).



    AC_HAVE_HEADERS(sys/param.h)

])

#--------------------------------------------------------------------
# TEA_PATH_X
#
#	Locate the X11 header files and the X11 library archive.  Try

#	
# Results:
#
#	Sets the following vars:
#		XINCLUDES
#		XLIBSW
#		LIBS (appends to)
#		TEA_WINDOWINGSYSTEM
#
#--------------------------------------------------------------------

AC_DEFUN(TEA_PATH_X, [
    if test "${TEA_PLATFORM}" = "unix" ; then
	case ${TK_DEFS} in
	    *MAC_OSX_TK*)
		AC_DEFINE(MAC_OSX_TK)
		TEA_WINDOWINGSYSTEM="aqua"
		;;
	    *)
		TEA_PATH_UNIX_X
		TEA_WINDOWINGSYSTEM="x11"
		;;
	esac
    elif test "${TEA_PLATFORM}" = "windows" ; then
	TEA_WINDOWINGSYSTEM="windows"
    fi
])

AC_DEFUN(TEA_PATH_UNIX_X, [
    AC_PATH_X
    not_really_there=""
    if test "$no_x" = ""; then

# EXEEXT
#	Select the executable extension based on the host type.  This
#	is a lightweight replacement for AC_EXEEXT that doesn't require
#	a compiler.
#------------------------------------------------------------------------

AC_DEFUN(TEA_INIT, [
    # TEA extensions pass this us the version of TEA they think they
    # are compatible with.
    TEA_VERSION="3.2"

    AC_MSG_CHECKING([for correct TEA configuration])
    if test x"${PACKAGE_NAME}" = x ; then
	AC_MSG_ERROR([
The PACKAGE_NAME variable must be defined by your TEA configure.in])
    fi
    if test x"$1" = x ; then
	AC_MSG_ERROR([
TEA version not specified.])
    elif test "$1" != "${TEA_VERSION}" ; then
	AC_MSG_RESULT([warning: requested TEA version "$1", have "${TEA_VERSION}"])
    else
	AC_MSG_RESULT([ok (TEA ${TEA_VERSION})])
    fi
    case "`uname -s`" in
	*win32*|*WIN32*|*CYGWIN_NT*|*CYGWIN_9*|*CYGWIN_ME*|*MINGW32_*)
	    AC_CHECK_PROG(CYGPATH, cygpath, cygpath -w, echo)
	    EXEEXT=".exe"
	    TEA_PLATFORM="windows"
	    ;;
	*)
	    CYGPATH=echo
	    EXEEXT=""
	    TEA_PLATFORM="unix"
	    ;;
    esac

    # Check if exec_prefix is set. If not use fall back to prefix.
    # Note when adjusted, so that TEA_PREFIX can correct for this.
    # This is needed for recursive configures, since autoconf propagates
    # $prefix, but not $exec_prefix (doh!).
    if test x$exec_prefix = xNONE ; then
	exec_prefix_default=yes
	exec_prefix=$prefix
    fi

    AC_SUBST(EXEEXT)
    AC_SUBST(CYGPATH)

    # This package name must be replaced statically for AC_SUBST to work
    AC_SUBST(PKG_LIB_FILE)
    # Substitute STUB_LIB_FILE in case package creates a stub library too.

    AC_SUBST(PKG_INCLUDES)
])

#------------------------------------------------------------------------
# TEA_ADD_LIBS --
#
#	Specify one or more libraries.  Users should check for
#	the right platform before adding to their list.  For Windows,
#	libraries provided in "foo.lib" format will be converted to
#	"-lfoo" when using GCC (mingw).
#
# Arguments:
#	one or more file names
#
# Results:
#
#	Defines and substs the following vars:
#		PKG_LIBS
#------------------------------------------------------------------------
AC_DEFUN(TEA_ADD_LIBS, [
    vars="$@"
    for i in $vars; do
	if test "${TEA_PLATFORM}" = "windows" -a "$GCC" = "yes" ; then
	    # Convert foo.lib to -lfoo for GCC.  No-op if not *.lib
	    i=`echo "$i" | sed -e 's/^\([[^-]].*\)\.lib[$]/-l\1/i'`
	fi
	PKG_LIBS="$PKG_LIBS $i"
    done
    AC_SUBST(PKG_LIBS)
])

#------------------------------------------------------------------------
# TEA_ADD_CFLAGS --

# Results:
#
#	If --prefix or --exec-prefix was not specified, $prefix and
#	$exec_prefix will be set to the values given to Tcl when it was
#	configured.
#------------------------------------------------------------------------
AC_DEFUN(TEA_PREFIX, [

    if test "${prefix}" = "NONE"; then
	prefix_default=yes
	if test x"${TCL_PREFIX}" != x; then
	    AC_MSG_NOTICE([--prefix defaulting to TCL_PREFIX ${TCL_PREFIX}])
	    prefix=${TCL_PREFIX}
	else
	    AC_MSG_NOTICE([--prefix defaulting to /usr/local])
	    prefix=/usr/local
	fi
    fi
    if test "${exec_prefix}" = "NONE" -a x"${prefix_default}" = x"yes" \
	-o x"${exec_prefix_default}" = x"yes" ; then
	if test x"${TCL_EXEC_PREFIX}" != x; then
	    AC_MSG_NOTICE([--exec-prefix defaulting to TCL_EXEC_PREFIX ${TCL_EXEC_PREFIX}])
	    exec_prefix=${TCL_EXEC_PREFIX}
	else
	    AC_MSG_NOTICE([--exec-prefix defaulting to ${prefix}])
	    exec_prefix=$prefix
	fi
    fi
])

#------------------------------------------------------------------------
# TEA_SETUP_COMPILER_CC --

	    AC_MSG_RESULT([no]))
    fi

    #--------------------------------------------------------------------
    # Common compiler flag setup
    #--------------------------------------------------------------------



    AC_C_BIGENDIAN
    if test "${TEA_PLATFORM}" = "unix" ; then
	TEA_TCL_LINK_LIBS
	TEA_MISSING_POSIX_HEADERS
	# Let the user call this, because if it triggers, they will
	# need a compat/strtod.c that is correct.  Users can also
	# use Tcl_GetDouble(FromObj) instead.

#	MAKE_STATIC_LIB	Makefile rule for building a static library
#	MAKE_STUB_LIB	Makefile rule for building a stub library
#------------------------------------------------------------------------

AC_DEFUN(TEA_MAKE_LIB, [
    if test "${TEA_PLATFORM}" = "windows" -a "$GCC" != "yes"; then
	MAKE_STATIC_LIB="\${STLIB_LD} -out:\[$]@ \$(PKG_OBJECTS)"
	MAKE_SHARED_LIB="\${SHLIB_LD} \${SHLIB_LD_LIBS} \${LDFLAGS_DEFAULT} -out:\[$]@ \$(PKG_OBJECTS)"
	MAKE_STUB_LIB="\${STLIB_LD} -out:\[$]@ \$(PKG_STUB_OBJECTS)"
    else
	MAKE_STATIC_LIB="\${STLIB_LD} \[$]@ \$(PKG_OBJECTS)"
	MAKE_SHARED_LIB="\${SHLIB_LD} -o \[$]@ \$(PKG_OBJECTS) \${SHLIB_LD_LIBS}"
	MAKE_STUB_LIB="\${STLIB_LD} \[$]@ \$(PKG_STUB_OBJECTS)"
    fi

    if test "${SHARED_BUILD}" = "1" ; then
	MAKE_LIB="${MAKE_SHARED_LIB} "
    else
	MAKE_LIB="${MAKE_STATIC_LIB} "
    fi

    #--------------------------------------------------------------------
    # Shared libraries and static libraries have different names.
    # Use the double eval to make sure any variables in the suffix is
    # substituted. (@@@ Might not be necessary anymore)
    #--------------------------------------------------------------------


    if test "${TEA_PLATFORM}" = "windows" ; then
	if test "${SHARED_BUILD}" = "1" ; then
	    # We force the unresolved linking of symbols that are really in
	    # the private libraries of Tcl and Tk.
	    SHLIB_LD_LIBS="${SHLIB_LD_LIBS} \"`${CYGPATH} ${TCL_BIN_DIR}/${TCL_STUB_LIB_FILE}`\""
	    if test x"${TK_BIN_DIR}" != x ; then
		SHLIB_LD_LIBS="${SHLIB_LD_LIBS} \"`${CYGPATH} ${TK_BIN_DIR}/${TK_STUB_LIB_FILE}`\""
	    fi
	    eval eval "PKG_LIB_FILE=${PACKAGE_NAME}${SHARED_LIB_SUFFIX}"

	else
	    eval eval "PKG_LIB_FILE=${PACKAGE_NAME}${UNSHARED_LIB_SUFFIX}"
	fi
	# Some packages build there own stubs libraries
	eval eval "PKG_STUB_LIB_FILE=${PACKAGE_NAME}stub${UNSHARED_LIB_SUFFIX}"
	# These aren't needed on Windows (either MSVC or gcc)
	RANLIB=:
	RANLIB_STUB=:
    else
	RANLIB_STUB="${RANLIB}"
	if test "${SHARED_BUILD}" = "1" ; then
	    SHLIB_LD_LIBS="${SHLIB_LD_LIBS} ${TCL_STUB_LIB_SPEC}"
	    if test x"${TK_BIN_DIR}" != x ; then
		SHLIB_LD_LIBS="${SHLIB_LD_LIBS} ${TK_STUB_LIB_SPEC}"
	    fi
	    eval eval "PKG_LIB_FILE=lib${PACKAGE_NAME}${SHARED_LIB_SUFFIX}"
	    RANLIB=:

#
# Results
#	Subst's the following values:
#		TCLSH_PROG
#------------------------------------------------------------------------

AC_DEFUN(TEA_PROG_TCLSH, [
    # Allow the user to provide this setting in the env
    if test "x${TCLSH_PROG}" = "x" ; then
	AC_MSG_CHECKING([for tclsh])

	AC_CACHE_VAL(ac_cv_path_tclsh, [
	if test "${TEA_PLATFORM}" = "windows" -a "$do64bit_ok" = "yes" \

		-o "$doWince" != "no" ; then
	    # A Windows cross-compile build - restrict target tclsh
	    # as we need one we can run on this system
	    search_path=`echo ${PATH} | sed -e 's/:/ /g'`
	else
	    search_path=`echo ${TCL_BIN_DIR}:${TCL_BIN_DIR}/../bin:${exec_prefix}/bin:${prefix}/bin:${PATH} | sed -e 's/:/ /g'`
	fi
	for dir in $search_path ; do
	    for j in `ls -r $dir/tclsh[[8-9]]*${EXEEXT} 2> /dev/null` \
		    `ls -r $dir/tclsh*${EXEEXT} 2> /dev/null` ; do
		if test x"$ac_cv_path_tclsh" = x ; then
		    if test -f "$j" ; then
			ac_cv_path_tclsh=$j
			break
		    fi
		fi
	    done
	done
	])

	if test -f "$ac_cv_path_tclsh" ; then
	    TCLSH_PROG=$ac_cv_path_tclsh
	    AC_MSG_RESULT([$TCLSH_PROG])
	else
	    AC_MSG_ERROR([No tclsh found in PATH: $search_path])
	fi
    fi
    AC_SUBST(TCLSH_PROG)
])

#------------------------------------------------------------------------
# TEA_PROG_WISH
#	Locate a wish shell in the following directories:

#
# Results
#	Subst's the following values:
#		WISH_PROG
#------------------------------------------------------------------------

AC_DEFUN(TEA_PROG_WISH, [
    # Allow the user to provide this setting in the env
    if test "x${WISH_PROG}" = "x" ; then
	AC_MSG_CHECKING([for wish])

	AC_CACHE_VAL(ac_cv_path_wish, [
	if test "${TEA_PLATFORM}" = "windows" -a "$do64bit_ok" = "yes" \

		-o "$doWince" != "no" ; then
	    # A Windows cross-compile build - restrict target tclsh
	    # as we need one we can run on this system
	    search_path=`echo ${PATH} | sed -e 's/:/ /g'`
	else
	    search_path=`echo ${TK_BIN_DIR}:${TK_BIN_DIR}/../bin:${TCL_BIN_DIR}:${TCL_BIN_DIR}/../bin:${exec_prefix}/bin:${prefix}/bin:${PATH} | sed -e 's/:/ /g'`
	fi
	for dir in $search_path ; do
	    for j in `ls -r $dir/wish[[8-9]]*${EXEEXT} 2> /dev/null` \
		    `ls -r $dir/wish*${EXEEXT} 2> /dev/null` ; do
		if test x"$ac_cv_path_wish" = x ; then
		    if test -f "$j" ; then
			ac_cv_path_wish=$j
			break
		    fi
		fi
	    done
	done
	])

	if test -f "$ac_cv_path_wish" ; then
	WISH_PROG=$ac_cv_path_wish
	    AC_MSG_RESULT([$WISH_PROG])
	else
	    AC_MSG_ERROR([No wish found in PATH: $search_path])
	fi
    fi
    AC_SUBST(WISH_PROG)
])

#------------------------------------------------------------------------
# TEA_PATH_CONFIG --
#

			ac_cv_c_celibconfig=`(cd $i; pwd)`
			break
		    fi
		done
	    fi
	])
	if test x"${ac_cv_c_celibconfig}" = x ; then

	    AC_MSG_ERROR([Cannot find celib support library directory])
	else
	    no_celib=
	    CELIB_DIR=${ac_cv_c_celibconfig}
	    AC_MSG_RESULT([found $CELIB_DIR])
	    TEA_PATH_NOSPACE(CELIB_DIR, ${ac_cv_c_celibconfig})
	fi
    fi
])

#------------------------------------------------------------------------
# TEA_PATH_NOSPACE
#	Ensure that the given path has no spaces.  This is necessary for
#	CC (and consitutuent vars that build it up) to work in the
#	tortured autoconf environment.  Currently only for Windows use.
#
# Arguments
#	VAR  - name of the variable to set
#	PATH - path to ensure no spaces in
#
# Results
#	Sets $VAR to short path of $PATH if it can be found.
#------------------------------------------------------------------------

AC_DEFUN([TEA_PATH_NOSPACE], [
    if test "${TEA_PLATFORM}" = "windows" ; then
	# we need TCLSH_PROG defined to get Windows short pathnames
	AC_REQUIRE([TEA_PROG_TCLSH])

	AC_MSG_CHECKING([short pathname for $1 ($2)])

	shortpath=
	case "$2" in
	    *\ *)
		# Only do this if we need to.
		shortpath=`echo "puts [[file attributes {$2} -shortname]] ; exit" | ${TCLSH_PROG} 2>/dev/null`
		;;
	esac
	if test "x${shortpath}" = "x" ; then
	    AC_MSG_RESULT([not changed])
	else
	    $1=$shortpath
	    AC_MSG_RESULT([${$1}])
	fi
    fi
])