* unix/tcl.m4: use gcc4's __attribute__((__visibility__("hidden"))) if

	available to define MODULE_SCOPE effective on all platforms.
	* unix/configure.in: add caching to -pipe and zoneinfo checks.
	* unix/configure: autoconf-2.59
	* unix/tclConfig.h.in: autoheader-2.59

1 files changed, 43 insertions, 39 deletions

diff --git a/unix/configure.in b/unix/configure.in
index 81fc77b..1ea3758 100644
--- a/unix/configure.in
+++ b/unix/configure.in
@@ -3,7 +3,7 @@ dnl	This file is an input file used by the GNU "autoconf" program to
 dnl	generate the file "configure", which is run during Tcl installation
 dnl	to configure the system for the local environment.
 #
-# RCS: @(#) $Id: configure.in,v 1.154 2007/01/19 01:04:01 das Exp $
+# RCS: @(#) $Id: configure.in,v 1.155 2007/02/04 02:51:24 das Exp $
 
 AC_INIT([tcl],[8.5])
 AC_PREREQ(2.59)
@@ -78,16 +78,15 @@ SC_MISSING_POSIX_HEADERS
 # It makes compiling go faster.  (This is only a performance feature.)
 #------------------------------------------------------------------------
 
-if test -z "$no_pipe"; then
-if test -n "$GCC"; then
-  AC_MSG_CHECKING([if the compiler understands -pipe])
-  OLDCC="$CC"  
-  CC="$CC -pipe"
-  AC_TRY_COMPILE(,,
-    AC_MSG_RESULT([yes]),
-    CC="$OLDCC"
-    AC_MSG_RESULT([no]))
-fi  
+if test -z "$no_pipe" && test -n "$GCC"; then
+    AC_CACHE_CHECK([if the compiler understands -pipe],
+	tcl_cv_cc_pipe, [
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -pipe"
+	AC_TRY_COMPILE(,, tcl_cv_cc_pipe=yes, tcl_cv_cc_pipe=no)
+	CFLAGS=$hold_cflags])
+    if test $tcl_cv_cc_pipe = yes; then
+	CFLAGS="$CFLAGS -pipe"
+    fi
 fi
 
 #------------------------------------------------------------------------
@@ -587,42 +586,47 @@ AC_MSG_RESULT([$tcl_ok])
 #------------------------------------------------------------------------
 AC_MSG_CHECKING([for timezone data])
 AC_ARG_WITH(tzdata,
-	AC_HELP_STRING([--with-tzdata],
-		[install timezone data (default: autodetect)]),
-	[tcl_ok=$withval], [tcl_ok=auto])
+    AC_HELP_STRING([--with-tzdata],
+	[install timezone data (default: autodetect)]),
+    [tcl_ok=$withval], [tcl_ok=auto])
 #
 # Any directories that get added here must also be added to the
 # search path in ::tcl::clock::Initialize (library/clock.tcl).
 #
 case $tcl_ok in 
-	no)
-		AC_MSG_RESULT([supplied by OS vendor])
-	;;
-	yes)
-		# nothing to do here
-	;;
-	auto*)
-		tcl_ok=yes
-		for dir in /usr/share/zoneinfo \
-			/usr/share/lib/zoneinfo \
-			/usr/lib/zoneinfo
-		do
-			if test -f $dir/UTC -o -f $dir/GMT
-			then
-				tcl_ok=no
-				AC_MSG_RESULT([$dir])
-				break
-			fi
-		done
-	;;
-	*)
-		AC_MSG_ERROR([invalid argument: $tcl_ok])	
-	;;
+    no)
+	AC_MSG_RESULT([supplied by OS vendor])
+    ;;
+    yes)
+	# nothing to do here
+    ;;
+    auto*)
+	AC_CACHE_VAL([tcl_cv_dir_zoneinfo], [
+	for dir in /usr/share/zoneinfo \
+		/usr/share/lib/zoneinfo \
+		/usr/lib/zoneinfo
+	do
+		if test -f $dir/UTC -o -f $dir/GMT
+		then
+			tcl_cv_dir_zoneinfo="$dir"
+			break
+		fi
+	done])
+	if test -n "$tcl_cv_dir_zoneinfo"; then
+	    tcl_ok=no
+	    AC_MSG_RESULT([$dir])
+	else
+	    tcl_ok=yes
+	fi
+    ;;
+    *)
+	AC_MSG_ERROR([invalid argument: $tcl_ok])	
+    ;;
 esac
 if test $tcl_ok = yes
 then
-	AC_MSG_RESULT([supplied by Tcl])
-	INSTALL_TZDATA=install-tzdata
+    AC_MSG_RESULT([supplied by Tcl])
+    INSTALL_TZDATA=install-tzdata
 fi
 AC_SUBST(INSTALL_TZDATA)