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-rwxr-xr-xunix/configure2
-rw-r--r--unix/tcl.m42
2 files changed, 2 insertions, 2 deletions
diff --git a/unix/configure b/unix/configure
index 382c284..1d76799 100755
--- a/unix/configure
+++ b/unix/configure
@@ -4315,7 +4315,7 @@ if test "${tcl_cv_cc_visibility_hidden+set}" = set; then
echo $ECHO_N "(cached) $ECHO_C" >&6
else
- hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -fvisibility=hidden"
+ hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -fvisibility=hidden -Werror"
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h. */
_ACEOF
diff --git a/unix/tcl.m4 b/unix/tcl.m4
index c5045c7..d6769af 100644
--- a/unix/tcl.m4
+++ b/unix/tcl.m4
@@ -1052,7 +1052,7 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
AC_CACHE_CHECK([if compiler supports visibility "hidden"],
tcl_cv_cc_visibility_hidden, [
- hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -fvisibility=hidden"
+ hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -fvisibility=hidden -Werror"
AC_TRY_COMPILE(,, tcl_cv_cc_visibility_hidden=yes,
tcl_cv_cc_visibility_hidden=no)
CFLAGS=$hold_cflags])