From 95df0fddf66a2e85b166d7dc6678ed53adbf4c66 Mon Sep 17 00:00:00 2001
From: Stefan Metzmacher <metze@samba.org>
Date: Sat, 6 Sep 2008 12:04:00 +0200
Subject: zlib: we require zlib-1.2.3 or higher

metze
(This used to be commit 3f4eb091f0dcc53acbfdc63a8d82a5a0f28954a6)
---
 source4/lib/zlib.m4 | 21 ++++++++++++++++++---
 1 file changed, 18 insertions(+), 3 deletions(-)

diff --git a/source4/lib/zlib.m4 b/source4/lib/zlib.m4
index 7b967fc8d2..9ee7b8e49e 100644
--- a/source4/lib/zlib.m4
+++ b/source4/lib/zlib.m4
@@ -1,11 +1,26 @@
 
 AC_CHECK_HEADERS(zlib.h)
 
-# we require this new function...
-AC_CHECK_LIB_EXT(z, ZLIB_LIBS, inflateReset2)
+AC_CHECK_LIB_EXT(z, ZLIB_LIBS, zlibVersion)
+
+AC_CACHE_CHECK([for zlib >= 1.2.3], samba_cv_zlib_1_2_3, [
+	AC_TRY_COMPILE([
+		#include <zlib.h>
+		],[
+		#if (ZLIB_VERNUM >= 0x1230)
+		#else
+		#error "ZLIB_VERNUM < 0x1230"
+		#endif
+		],[
+		samba_cv_zlib_1_2_3=yes
+		],[
+		samba_cv_zlib_1_2_3=no
+		])
+])
 
 if test x"$ac_cv_header_zlib_h" = x"yes" -a \
-	x"$ac_cv_lib_ext_z_inflateReset2" = x"yes"; then
+	x"$ac_cv_lib_ext_z_zlibVersion" = x"yes" -a \
+	x"$samba_cv_zlib_1_2_3" = x"yes"; then
 	SMB_EXT_LIB(ZLIB, [${ZLIB_LIBS}])
 else
 	SMB_INCLUDE_MK(lib/zlib.mk)
-- 
cgit