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Overview
Comment:Modifications to skip threading checks (that no longer work) for tcl 8.7+ and just assume threading for the purposes of comparing what the package wants.
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SHA3-256: 4e2ab6299813c803e1b4c2e485a418276743cc22f05a869eb2df569ed0c4a9c5
User & Date: hypnotoad 2018-10-01 21:33:15.077
Context
2018-10-24
02:49
Removing windows line breaks check-in: 3daecc999e user: hypnotoad tags: practcl
2018-10-01
21:33
Modifications to skip threading checks (that no longer work) for tcl 8.7+ and just assume threading for the purposes of comparing what the package wants. check-in: 4e2ab62998 user: hypnotoad tags: practcl
2018-09-24
14:16
Pulling changes from TEA check-in: 72a7e44a99 user: hypnotoad tags: practcl
Changes
Unified Diff Ignore Whitespace Patch
Changes to tcl.m4.
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#		TCL_THREADS
#		_REENTRANT
#		_THREAD_SAFE
#------------------------------------------------------------------------

AC_DEFUN([TEA_ENABLE_THREADS], [
    AC_ARG_ENABLE(threads,
	AC_HELP_STRING([--enable-threads],
	    [build with threads (default: on)]),
	[tcl_ok=$enableval], [tcl_ok=yes])

    if test "${enable_threads+set}" = set; then
	enableval="$enable_threads"
	tcl_ok=$enableval
    else
	tcl_ok=yes
    fi

    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:

	    # USE_THREAD_ALLOC tells us to try the special thread-based
	    # allocator that significantly reduces lock contention
	    AC_DEFINE(USE_THREAD_ALLOC, 1,
		[Do we want to use the threaded memory allocator?])
	    AC_DEFINE(_REENTRANT, 1, [Do we want the reentrant OS API?])
	    if test "`uname -s`" = "SunOS" ; then
		AC_DEFINE(_POSIX_PTHREAD_SEMANTICS, 1,
			[Do we really want to follow the standard? Yes we do!])
	    fi
	    AC_DEFINE(_THREAD_SAFE, 1, [Do we want the thread-safe OS API?])
	    AC_CHECK_LIB(pthread,pthread_mutex_init,tcl_ok=yes,tcl_ok=no)
	    if test "$tcl_ok" = "no"; then
		# Check a little harder for __pthread_mutex_init in the same
		# library, as some systems hide it there until pthread.h is
		# defined.  We could alternatively do an AC_TRY_COMPILE with
		# pthread.h, but that will work with libpthread really doesn't
		# exist, like AIX 4.2.  [Bug: 4359]
		AC_CHECK_LIB(pthread, __pthread_mutex_init,
		    tcl_ok=yes, tcl_ok=no)
	    fi

	    if test "$tcl_ok" = "yes"; then
		# The space is needed
		THREADS_LIBS=" -lpthread"
	    else
		AC_CHECK_LIB(pthreads, pthread_mutex_init,
		    tcl_ok=yes, tcl_ok=no)
		if test "$tcl_ok" = "yes"; then
		    # The space is needed
		    THREADS_LIBS=" -lpthreads"
		else
		    AC_CHECK_LIB(c, pthread_mutex_init,
			tcl_ok=yes, tcl_ok=no)
		    if test "$tcl_ok" = "no"; then
			AC_CHECK_LIB(c_r, pthread_mutex_init,
			    tcl_ok=yes, tcl_ok=no)
			if test "$tcl_ok" = "yes"; then
			    # The space is needed
			    THREADS_LIBS=" -pthread"
			else
			    TCL_THREADS=0
			    AC_MSG_WARN([Do not know how to find pthread lib on your system - thread support disabled])
			fi
		    fi
		fi
	    fi
	fi
    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, 1, [Are we building with threads enabled?])
	AC_MSG_RESULT([yes (default)])
    else
	AC_MSG_RESULT([no])
    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
	*THREADS=1*)








	    if test "${TCL_THREADS}" = "0"; then
		AC_MSG_WARN([
    Building ${PACKAGE_NAME} without threads enabled, but building against Tcl
    that IS thread-enabled.  It is recommended to use --enable-threads.])
	    fi
	    ;;
	*)

	    if test "${TCL_THREADS}" = "1"; then
		AC_MSG_WARN([
    --enable-threads requested, but building against a Tcl that is NOT
    thread-enabled.  This is an OK configuration that will also run in
    a thread-enabled core.])
	    fi
	    ;;
    esac

    AC_SUBST(TCL_THREADS)
])

#------------------------------------------------------------------------
# TEA_ENABLE_SYMBOLS --
#
#	Specify if debugging symbols should be used.








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#		TCL_THREADS
#		_REENTRANT
#		_THREAD_SAFE
#------------------------------------------------------------------------

AC_DEFUN([TEA_ENABLE_THREADS], [
    AC_ARG_ENABLE(threads,
        AC_HELP_STRING([--enable-threads],
            [build with threads (default: on)]),
        [tcl_ok=$enableval], [tcl_ok=yes])

    if test "${enable_threads+set}" = set; then
        enableval="$enable_threads"
        tcl_ok=$enableval
    else
        tcl_ok=yes
    fi

    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:

            # USE_THREAD_ALLOC tells us to try the special thread-based
            # allocator that significantly reduces lock contention
            AC_DEFINE(USE_THREAD_ALLOC, 1,
                [Do we want to use the threaded memory allocator?])
            AC_DEFINE(_REENTRANT, 1, [Do we want the reentrant OS API?])
            if test "`uname -s`" = "SunOS" ; then
                AC_DEFINE(_POSIX_PTHREAD_SEMANTICS, 1,
                        [Do we really want to follow the standard? Yes we do!])
            fi
            AC_DEFINE(_THREAD_SAFE, 1, [Do we want the thread-safe OS API?])
            AC_CHECK_LIB(pthread,pthread_mutex_init,tcl_ok=yes,tcl_ok=no)
            if test "$tcl_ok" = "no"; then
                # Check a little harder for __pthread_mutex_init in the same
                # library, as some systems hide it there until pthread.h is
                # defined.  We could alternatively do an AC_TRY_COMPILE with
                # pthread.h, but that will work with libpthread really doesn't
                # exist, like AIX 4.2.  [Bug: 4359]
                AC_CHECK_LIB(pthread, __pthread_mutex_init,
                    tcl_ok=yes, tcl_ok=no)
            fi

            if test "$tcl_ok" = "yes"; then
                # The space is needed
                THREADS_LIBS=" -lpthread"
            else
                AC_CHECK_LIB(pthreads, pthread_mutex_init,
                    tcl_ok=yes, tcl_ok=no)
                if test "$tcl_ok" = "yes"; then
                    # The space is needed
                    THREADS_LIBS=" -lpthreads"
                else
                    AC_CHECK_LIB(c, pthread_mutex_init,
                        tcl_ok=yes, tcl_ok=no)
                    if test "$tcl_ok" = "no"; then
                        AC_CHECK_LIB(c_r, pthread_mutex_init,
                            tcl_ok=yes, tcl_ok=no)
                        if test "$tcl_ok" = "yes"; then
                            # The space is needed
                            THREADS_LIBS=" -pthread"
                        else
                            TCL_THREADS=0
                            AC_MSG_WARN([Do not know how to find pthread lib on your system - thread support disabled])
                        fi
                    fi
                fi
            fi
        fi
    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, 1, [Are we building with threads enabled?])
        AC_MSG_RESULT([yes (default)])
    else
        AC_MSG_RESULT([no])
    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.

    if test "${TCL_VERSION}" > "8.6" ; then
      TCL_HAS_THREADS=1
    else
      case ${TCL_DEFS} in
          *THREADS=1*)
              TCL_HAS_THREADS=1;
          ;;
          *)
              TCL_HAS_THREADS=0;
          ;;
      esac
    fi
    if test "${TCL_HAS_THREADS}" = "1"; then
      if test "${TCL_THREADS}" = "0"; then
        AC_MSG_WARN([
    Building ${PACKAGE_NAME} without threads enabled, but building against Tcl
    that IS thread-enabled.  It is recommended to use --enable-threads.])
      fi


    else
      if test "${TCL_THREADS}" = "1"; then
        AC_MSG_WARN([
    --enable-threads requested, but building against a Tcl that is NOT
    thread-enabled.  This is an OK configuration that will also run in
    a thread-enabled core.])
      fi


    fi
    AC_SUBST(TCL_THREADS)
])

#------------------------------------------------------------------------
# TEA_ENABLE_SYMBOLS --
#
#	Specify if debugging symbols should be used.
︙︙
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