if test "$tcl_ok" = "yes"; then
	TCL_THREADS=1
	AC_DEFINE(TCL_THREADS)
	AC_DEFINE(_REENTRANT)

	case "`uname -s`" in
	    *win32* | *WIN32* | *CYGWIN_NT* | *CYGWIN_98* | *CYGWIN_95*)
		    AC_MSG_RESULT(yes)
		;;
	    *)
		AC_CHECK_LIB(pthread,pthread_mutex_init,tcl_ok=yes,tcl_ok=no)
		if test "$tcl_ok" = "yes"; then
		    # The space is needed
		    THREADS_LIBS=" -lpthread"

#				Sets to LDFLAGS_OPTIMIZE if false
#		DBGX		Debug library extension
#
#------------------------------------------------------------------------

AC_DEFUN(SC_ENABLE_SYMBOLS, [
    case "`uname -s`" in
	*win32* | *WIN32* | *CYGWIN_NT* | *CYGWIN_98* | *CYGWIN_95*)
	    tcl_dbgx=d
	;;
	*)
	    tcl_dbgx=g
	;;
    esac

	    SHLIB_LD_LIBS='${LIBS}'
	    SHLIB_SUFFIX=".so"
	    DL_OBJS="tclLoadDl.o"
	    DL_LIBS="-ldl"
	    LDFLAGS="-export-dynamic"
	    LD_SEARCH_FLAGS=""
	    ;;
	*win32*|*WIN32*|CYGWIN_NT*|cygwin_nt*|*CYGWIN_98*|*CYGWIN_95*)
	    CFLAGS_DEBUG="-nologo -Z7 -Od -WX ${runtime}d"
	    CFLAGS_OPTIMIZE="-nologo -Oti -Gs -GD ${runtime}"
	    LDFLAGS_CONSOLE="-subsystem:console"
	    LDFLAGS_WINDOW="-subsystem:windows"
	    LDFLAGS_DEBUG="-debug:full -debugtype:cv"
	    LDFLAGS_OPTIMIZE="-release"
	    EXTRA_CFLAGS="-YX"

#		MAKE_SHARED_LIB	Makefile rule for building a shared library
#		MAKE_UNSHARED_LIB	Makefile rule for building a static
#				library
#------------------------------------------------------------------------

AC_DEFUN(SC_MAKE_LIB, [
    case "`uname -s`" in
	*win32* | *WIN32* | *CYGWIN_NT* |*CYGWIN_98*|*CYGWIN_95*)
	    if test "${CC-cc}" = "cl"; then
		MAKE_STATIC_LIB="\${STLIB_LD} -out:\[$]@ \$(\[$]@_OBJECTS) "
		MAKE_SHARED_LIB="\${SHLIB_LD} \${SHLIB_LDFLAGS} \${SHLIB_LD_LIBS} \$(LDFLAGS) -out:\[$]@ \$(\[$]@_OBJECTS) "
	    fi
	    ;;
	*)
	    MAKE_STATIC_LIB="\${STLIB_LD} \[$]@ \$(\[$]@_OBJECTS)"

	    $1_LIB_NAME=`basename $i`
	    $1_LIB_PATH_NAME=$i
	    break
	fi
    done

    case "`uname -s`" in
	*win32* | *WIN32* | *CYGWIN_NT* |*CYGWIN_98*|*CYGWIN_95*)
	    $1_LIB_SPEC=\"`${CYGPATH} ${$1_LIB_PATH_NAME}`\"
	    ;;
	*)
	    # Strip off the leading "lib" and trailing ".a" or ".so"

	    sc_lib_name_lib=`echo ${$1_LIB_NAME}|sed -e 's/^lib//' -e 's/\.[[^.]]*$//'`
	    $1_LIB_SPEC="-L${sc_lib_name_dir} -l${sc_lib_name_lib}"

#		TCL_INCLUDES
#------------------------------------------------------------------------

AC_DEFUN(SC_PRIVATE_TCL_HEADERS, [
    AC_MSG_CHECKING(for Tcl private include files)

    case "`uname -s`" in
	*win32* | *WIN32* | *CYGWIN_NT* |*CYGWIN_98*|*CYGWIN_95*)
	    TCL_TOP_DIR_NATIVE=\"`${CYGPATH} ${TCL_SRC_DIR}/..`\"
	    TCL_GENERIC_DIR_NATIVE=\"`${CYGPATH} ${TCL_SRC_DIR}/../generic`\"
	    TCL_UNIX_DIR_NATIVE=\"`${CYGPATH} ${TCL_SRC_DIR}/../unix`\"
	    TCL_WIN_DIR_NATIVE=\"`${CYGPATH} ${TCL_SRC_DIR}/../win`\"
	    TCL_BMAP_DIR_NATIVE=\"`${CYGPATH} ${TCL_SRC_DIR}/../bitmaps`\"
	    TCL_TOOL_DIR_NATIVE=\"`${CYGPATH} ${TCL_SRC_DIR}/../tools`\"
	    TCL_COMPAT_DIR_NATIVE=\"`${CYGPATH} ${TCL_SRC_DIR}/../compat`\"

#		TK_INCLUDES
#------------------------------------------------------------------------

AC_DEFUN(SC_PRIVATE_TK_HEADERS, [
    AC_MSG_CHECKING(for Tk private include files)

    case "`uname -s`" in
	*win32* | *WIN32* | *CYGWIN_NT* |*CYGWIN_98*|*CYGWIN_95*)
	    TK_UNIX_DIR_NATIVE=\"`${CYGPATH} ${TK_SRC_DIR}/../unix`\"
	    TK_WIN_DIR_NATIVE=\"`${CYGPATH} ${TK_SRC_DIR}/../win`\"
	    TK_GENERIC_DIR_NATIVE=\"`${CYGPATH} ${TK_SRC_DIR}/../generic`\"
	    TK_XLIB_DIR_NATIVE=\"`${CYGPATH} ${TK_SRC_DIR}/../xlib`\"
	    TK_PLATFORM_DIR_NATIVE=${TK_WIN_DIR_NATIVE}

	    TK_INCLUDES="-I${TK_GENERIC_DIR_NATIVE} -I${TK_PLATFORM_DIR_NATIVE} -I${TK_XLIB_DIR_NATIVE}"

#		EXEEXT
#------------------------------------------------------------------------

AC_DEFUN(SC_SIMPLE_EXEEXT, [
    AC_MSG_CHECKING(executable extension based on host type)

    case "`uname -s`" in
	*win32* | *WIN32* | *CYGWIN_NT* |*CYGWIN_98*|*CYGWIN_95*)
	    EXEEXT=".exe"
	;;
	*)
	    EXEEXT=""
	;;
    esac