From 42538bd63b3e98c4e7bbd192ba669e302d050d2d Mon Sep 17 00:00:00 2001
From: Anas Nashif <anas.nashif@intel.com>
Date: Sun, 4 Nov 2012 15:59:56 -0800
Subject: [PATCH] visibility

---
 Makefile.in          |  3 ++-
 configure.in         | 10 +++++++---
 lib/expat_external.h |  3 +++
 3 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/Makefile.in b/Makefile.in
index 9c0f5d4..00aec94 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -114,11 +114,12 @@ CPPFLAGS = @CPPFLAGS@ -DHAVE_EXPAT_CONFIG_H
 CFLAGS = @CFLAGS@
 CXXFLAGS = @CXXFLAGS@
 VSNFLAG = -version-info @LIBCURRENT@:@LIBREVISION@:@LIBAGE@
+CFLAG_VISIBILITY=@CFLAG_VISIBILITY@
 
 ### autoconf this?
 LTFLAGS = --silent
 
-COMPILE = $(CC) $(INCLUDES) $(CFLAGS) $(DEFS) $(CPPFLAGS)
+COMPILE = $(CC) $(CLFAG_VISIBILITY) $(INCLUDES) $(CFLAGS) $(DEFS) $(CPPFLAGS)
 CXXCOMPILE = $(CXX) $(INCLUDES) $(CXXFLAGS) $(DEFS) $(CPPFLAGS)
 LTCOMPILE = $(LIBTOOL) $(LTFLAGS) --mode=compile $(COMPILE)
 LINK_LIB = $(LIBTOOL) $(LTFLAGS) --mode=link $(COMPILE) -no-undefined $(VSNFLAG) -rpath $(libdir) $(LDFLAGS) -o $@
diff --git a/configure.in b/configure.in
index 7e968c4..8b24103 100644
--- a/configure.in
+++ b/configure.in
@@ -53,15 +53,19 @@ AC_CONFIG_HEADER(expat_config.h)
 
 sinclude(conftools/ac_c_bigendian_cross.m4)
 
-AC_LIBTOOL_WIN32_DLL
-AC_PROG_LIBTOOL
+sinclude(conftools/visibility.m4)
 
 AC_SUBST(LIBCURRENT)
 AC_SUBST(LIBREVISION)
 AC_SUBST(LIBAGE)
 
 dnl Checks for programs.
-AC_PROG_CC
+AC_PROG_CC_STDC
+AC_USE_SYSTEM_EXTENSIONS
+AC_SYS_LARGEFILE
+gl_VISIBILITY
+AC_LIBTOOL_WIN32_DLL
+AC_PROG_LIBTOOL
 AC_PROG_CXX
 AC_PROG_INSTALL
 
diff --git a/lib/expat_external.h b/lib/expat_external.h
index fdfb626..7118e9c 100644
--- a/lib/expat_external.h
+++ b/lib/expat_external.h
@@ -65,6 +65,9 @@
 #endif
 #endif  /* not defined XML_STATIC */
 
+#if HAVE_VISIBILTY
+#define XMLIMPORT __attribute__ ((visibility ("default")))
+#endif
 
 /* If we didn't define it above, define it away: */
 #ifndef XMLIMPORT
-- 
2.7.4