autotools: stop controlling symbol visibility with -export-symbols-regex

Instead, use -fvisibility=hidden and explicit exports via GST_EXPORT.
This should result in consistent behaviour for the autotools and
Meson builds.

diff --git a/configure.ac b/configure.ac
index fe21ba7..3846303 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -963,6 +963,16 @@ else
 fi
 AC_SUBST(DEPRECATED_CFLAGS)
 
+VISIBILITY_CFLAGS=""
+AS_COMPILER_FLAG([-fvisibility=hidden], [VISIBILITY_CFLAGS="-fvisibility=hidden"])
+AC_SUBST(VISIBILITY_CFLAGS)
+
+VISIBILITY_CXXFLAGS=""
+if test "x$HAVE_CXX" = "xyes"; then
+  AS_CXX_COMPILER_FLAG([-fvisibility=hidden], [VISIBILITY_CXXFLAGS="-fvisibility=hidden"])
+fi
+AC_SUBST(VISIBILITY_CXXFLAGS)
+
 dnl every flag in GST_OPTION_CFLAGS, GST_OPTION_CXXFLAGS and GST_OPTION_OBJCFLAGS can be overridden
 dnl at make time with e.g. make ERROR_CFLAGS=""
 GST_OPTION_CFLAGS="\$(WARNING_CFLAGS) \$(ERROR_CFLAGS) \$(DEBUG_CFLAGS) \$(PROFILE_CFLAGS) \$(GCOV_CFLAGS) \$(OPT_CFLAGS) \$(DEPRECATED_CFLAGS)"
@@ -980,9 +990,9 @@ dnl prefer internal headers to already installed ones
 dnl also add builddir include for enumtypes and marshal
 dnl add ERROR_CFLAGS, but overridable
 GST_CFLAGS="$GST_CFLAGS -DGST_USE_UNSTABLE_API"
-GST_CXXFLAGS="-I\$(top_srcdir)/gst-libs $GST_CFLAGS $GLIB_EXTRA_CFLAGS \$(GST_OPTION_CXXFLAGS)"
+GST_CXXFLAGS="-I\$(top_srcdir)/gst-libs $GST_CFLAGS $GLIB_EXTRA_CFLAGS \$(GST_OPTION_CXXFLAGS) \$(VISIBILITY_CXXFLAGS)"
 GST_OBJCFLAGS="-I\$(top_srcdir)/gst-libs $GST_CFLAGS $GLIB_EXTRA_CFLAGS \$(GST_OPTION_OBJCFLAGS)"
-GST_CFLAGS="-I\$(top_srcdir)/gst-libs $GST_CFLAGS $GLIB_EXTRA_CFLAGS \$(GST_OPTION_CFLAGS)"
+GST_CFLAGS="-I\$(top_srcdir)/gst-libs $GST_CFLAGS $GLIB_EXTRA_CFLAGS \$(GST_OPTION_CFLAGS) \$(VISIBILITY_CFLAGS)"
 AC_SUBST(GST_CFLAGS)
 AC_SUBST(GST_CXXFLAGS)
 AC_SUBST(GST_OBJCFLAGS)
@@ -998,7 +1008,7 @@ AC_SUBST(GST_ALL_LDFLAGS)
 
 dnl this really should only contain flags, not libs - they get added before
 dnl whatevertarget_LIBS and -L flags here affect the rest of the linking
-GST_PLUGIN_LDFLAGS="-module -avoid-version -export-symbols-regex '^[_]*gst_plugin_.*' $GST_ALL_LDFLAGS"
+GST_PLUGIN_LDFLAGS="-module -avoid-version $GST_ALL_LDFLAGS"
 AC_SUBST(GST_PLUGIN_LDFLAGS)
 
 dnl *** output files ***