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-rw-r--r--ChangeLog5
-rw-r--r--generic/tcl.h2
-rwxr-xr-xunix/configure5
-rw-r--r--unix/tcl.m47
4 files changed, 15 insertions, 4 deletions
diff --git a/ChangeLog b/ChangeLog
index a44ee50..951a993 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2011-04-11 Jan Nijtmans <nijtmans@users.sf.net>
+ * generic/tcl.h: fix for [Bug 3281728]: Tcl sources from 2011-04-06 do
+ * unix/tcl.m4: not build on GCC9 (RH9)
+ * unix/configure:
+
2011-04-08 Jan Nijtmans <nijtmans@users.sf.net>
* win/tclWinPort.h: fix for [Bug 3280043]: win2k: unresolved DLL imports
diff --git a/generic/tcl.h b/generic/tcl.h
index 3285c3c..ed63f8f 100644
--- a/generic/tcl.h
+++ b/generic/tcl.h
@@ -193,7 +193,7 @@ extern "C" {
# endif
#else
# define DLLIMPORT
-# if defined(__GNUC__) && !defined(NO_VIZ) && !defined(STATIC_BUILD)
+# if defined(__GNUC__) && __GNUC__ > 3
# define DLLEXPORT __attribute__ ((visibility("default")))
# else
# define DLLEXPORT
diff --git a/unix/configure b/unix/configure
index 4fdddd4..2483e4a 100755
--- a/unix/configure
+++ b/unix/configure
@@ -6479,7 +6479,7 @@ if test "${tcl_cv_cc_visibility_hidden+set}" = set; then
echo $ECHO_N "(cached) $ECHO_C" >&6
else
- if test "$GCC" = yes -a "$SHARED_BUILD" = 1; then
+ if test "$SHARED_BUILD" = 1; then
hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -fvisibility=hidden -Werror"
cat >conftest.$ac_ext <<_ACEOF
@@ -6492,6 +6492,9 @@ cat >>conftest.$ac_ext <<_ACEOF
int
main ()
{
+#if !defined(__GNUC__) || __GNUC__ < 4
+#error visibility hidden is not supported for this compiler
+#endif
;
return 0;
diff --git a/unix/tcl.m4 b/unix/tcl.m4
index 9a02e4c..5f4012d 100644
--- a/unix/tcl.m4
+++ b/unix/tcl.m4
@@ -1044,9 +1044,12 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
AC_CACHE_CHECK([if compiler supports visibility "hidden"],
tcl_cv_cc_visibility_hidden, [
- AS_IF([test "$GCC" = yes -a "$SHARED_BUILD" = 1], [
+ AS_IF([test "$SHARED_BUILD" = 1], [
hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -fvisibility=hidden -Werror"
- AC_TRY_COMPILE(,, tcl_cv_cc_visibility_hidden=yes,
+ AC_TRY_COMPILE(,[#if !defined(__GNUC__) || __GNUC__ < 4
+#error visibility hidden is not supported for this compiler
+#endif
+ ], tcl_cv_cc_visibility_hidden=yes,
tcl_cv_cc_visibility_hidden=no)
CFLAGS=$hold_cflags
], [