[Gnash-commit] gnash ChangeLog configure.ac

[Markus Gothe]

CVSROOT:        /sources/gnash
Module name:    gnash
Changes by:     Markus Gothe <nihilus>  07/09/14 07:25:34

Modified files:
        .              : ChangeLog configure.ac 

Log message:
        Look for broken -fvisibility-inlines-hidden.

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/gnash/ChangeLog?cvsroot=gnash&r1=1.4316&r2=1.4317
http://cvs.savannah.gnu.org/viewcvs/gnash/configure.ac?cvsroot=gnash&r1=1.417&r2=1.418

Patches:
Index: ChangeLog
===================================================================
RCS file: /sources/gnash/gnash/ChangeLog,v
retrieving revision 1.4316
retrieving revision 1.4317
diff -u -b -r1.4316 -r1.4317
--- ChangeLog   14 Sep 2007 06:46:27 -0000      1.4316
+++ ChangeLog   14 Sep 2007 07:25:33 -0000      1.4317
@@ -5,6 +5,10 @@
 
 2007-09-14 Markus Gothe <address@hidden>
 
+       * configure.ac: Look for broken -fvisibility-inlines-hidden.
+
+2007-09-14 Markus Gothe <address@hidden>
+
        * server/asobj/BevelFilter_as.cpp, server/asobj/BitMapFilter_as.cpp,
        server/asobj/BlurFilter_as.cpp, server/asobj/ColorMatrixFilter_as.cpp,
        server/asobj/ConvolutionFilter_as.cpp,

Index: configure.ac
===================================================================
RCS file: /sources/gnash/gnash/configure.ac,v
retrieving revision 1.417
retrieving revision 1.418
diff -u -b -r1.417 -r1.418
--- configure.ac        13 Sep 2007 23:36:22 -0000      1.417
+++ configure.ac        14 Sep 2007 07:25:33 -0000      1.418
@@ -15,7 +15,7 @@
 dnl  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 dnl  
 
-dnl $Id: configure.ac,v 1.417 2007/09/13 23:36:22 nihilus Exp $
+dnl $Id: configure.ac,v 1.418 2007/09/14 07:25:33 nihilus Exp $
 
 AC_PREREQ(2.50)
 AC_INIT(gnash, cvs)
@@ -1357,17 +1357,48 @@
   fi
 fi
 
-dnl FIXME: this GCC feature isn't fully debugged yet, so we don't want
-dnl to use it by default.
-dnl if test "$GCC" = "yes"; then
-dnl   AC_COMPILE_IFELSE([
-dnl   #if __GNUC__ < 4
-dnl   #error
-dnl   #endif],gccvisibility=yes,)
-dnl   if test x"$gccvisibility" = x"yes"; then
-dnl     CXXFLAGS="$CXXFLAGS -fvisibility-inlines-hidden"
-dnl   fi
-dnl fi
+dnl /* http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19664 */
+AC_DEFUN([CHECK_VISIBILITY_GCC_BUG],
+  [
+    AC_CACHE_CHECK([for gcc -fvisibility-inlines-hidden bug], 
gcc_visibility_bug, [
+        AC_LANG_PUSH(C++)
+        save_CXXFLAGS=$CXXFLAGS
+        save_LDFLAGS=$LDFLAGS
+        CXXFLAGS="-fPIC -fvisibility-inlines-hidden -O0"
+        LDFLAGS="$LDFLAGS -shared -fPIC"
+
+        AC_TRY_LINK(
+        [          
+          template<typename CharT>
+          struct VisTest
+          {
+            inline VisTest ();
+          };
+          template<typename CharT>
+          inline VisTest<CharT>::VisTest()
+        {}
+        extern template class VisTest<char>;  // It works if we drop that line
+        int some_function( int do_something ) 
__attribute__((visibility("default")));
+       int some_function( int )
+          {
+            VisTest<char> a;
+            return 0;
+          }
+        ], [],
+        gcc_visibility_bug=no, gcc_visibility_bug=yes)
+
+        CXXFLAGS=$save_CXXFLAGS
+        LDFLAGS=$save_LDFLAGS
+        AC_LANG_POP(C++)
+      ]
+    )
+    if test x$gcc_visibility_bug = xno; then
+      CXXFLAGS="$CXXFLAGS -fvisibility-inlines-hidden"
+    fi
+  ]
+)
+
+CHECK_VISIBILITY_GCC_BUG
 
 dnl Define convienience constants so Gnash can print out the
 dnl default configuration of the build.