From e34aeffd3c474ec787081382e2ba620a936caadd Mon Sep 17 00:00:00 2001
From: Frank Denis <github@pureftpd.org>
Date: Wed, 24 Apr 2013 08:46:39 -0700
Subject: [PATCH] Don't export symbols by default.

---
 configure.ac | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/configure.ac b/configure.ac
index b67d95b3..22c48984 100644
--- a/configure.ac
+++ b/configure.ac
@@ -42,6 +42,9 @@ AS_IF([test "$cross_compiling" != no],
   AC_DEFINE(CROSS_COMPILING, [1], [define if you are cross-compiling])
 )
 
+AX_CHECK_COMPILE_FLAG([-fvisibility=hidden],
+  [CFLAGS="$CFLAGS -fvisibility=hidden"])
+
 case $host_os in
   cygwin* | mingw* | pw32* | cegcc*) ;;
   *)