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

diff --git a/configure.ac b/configure.ac
index 315ebb06b27669422069503f63073a193fd8679a..d4eb5c7b977862d77a8a84d628b76c7a9a680ff7 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -539,6 +539,11 @@ 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="$CXXFLAGS -fvisibility=hidden"
+
                ORIG_CFLAGS=$CFLAGS
                CFLAGS="$CFLAGS -Wdeclaration-after-statement"
                AC_MSG_CHECKING(for -Wdeclaration-after-statement option to gcc)