[runtime] Use -fvisibility=hidden so only symbols marked with MONO_API are exported.

diff --git a/configure.ac b/configure.ac
index abed4c36cdec1f12dcb0d453193bf2ac365b0863..fc326497c056e5f270b2a4c3d040be271a9abf18 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -539,6 +539,12 @@ if test x"$GCC" = xyes; then
                # We rely on signed overflow to behave
                CFLAGS="$CFLAGS -fwrapv"
 
+               # Don't export any symbols by default
+               CFLAGS="$CFLAGS -fvisibility=hidden"
+               CFLAGS_FOR_EGLIB="$CFLAGS_FOR_EGLIB -fvisibility=hidden"
+               CXXFLAGS="$CXXFLAGS -fvisibility=hidden"
+
+               # Export symbols marked by MONO_API
                CFLAGS="$CFLAGS -DMONO_DLL_EXPORT"
 
                ORIG_CFLAGS=$CFLAGS