From 4c4bbd31f52845de70f5b828121eeea62f8b4514 Mon Sep 17 00:00:00 2001
From: Martin Szulecki
Date: Fri, 3 Oct 2014 15:51:43 +0200
Subject: Avoid exporting non-public symbols

---
 configure.ac | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index 6e3e058..0e335f6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -188,9 +188,14 @@ else
 	building_debug_code=yes
 fi
 
-AS_COMPILER_FLAGS(GLOBAL_CFLAGS, "-Wall -Wextra -Wmissing-declarations -Wredundant-decls -Wshadow -Wpointer-arith  -Wwrite-strings -Wswitch-default -Wno-unused-parameter -fsigned-char")
+AS_COMPILER_FLAGS(GLOBAL_CFLAGS, "-Wall -Wextra -Wmissing-declarations -Wredundant-decls -Wshadow -Wpointer-arith  -Wwrite-strings -Wswitch-default -Wno-unused-parameter -fsigned-char -fvisibility=hidden")
 AC_SUBST(GLOBAL_CFLAGS)
 
+case "$GLOBAL_CFLAGS" in
+  *-fvisibility=hidden*)
+    AC_DEFINE([HAVE_FVISIBILITY], [1], [Define if compiled with -fvisibility=hidden])
+esac
+
 # check for large file support
 AC_SYS_LARGEFILE
 LFS_CFLAGS=''
-- 
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