commit 12b5c4da0412cdffe8a0cdf084907abd152a4979
author Thomas Klausner <tk@giga.or.at> Thu Mar 14 10:42:18 2013 +0100
committer Thomas Klausner <tk@giga.or.at> Thu Mar 14 10:42:18 2013 +0100
tree 1a53c3caf7dee3ac0b3609a17320efc274142036
parent dddd4acff56c842c5652db9f761132859758712c

In zlib check, compare version number instead of looking for symbol.

CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index b59696e..d096858 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -68,10 +68,9 @@
 FIND_PACKAGE(ZLIB REQUIRED)
 INCLUDE_DIRECTORIES(${ZLIB_INCLUDE_DIR})
 set(CMAKE_REQUIRED_INCLUDES ${ZLIB_INCLUDE_DIR})
-CHECK_SYMBOL_EXISTS(ZEXPORT zlib.h HAVE_ZEXPORT)
-IF(NOT HAVE_ZEXPORT)
+IF(ZLIB_VERSION_STRING VERSION_LESS "1.1.2")
   MESSAGE(FATAL_ERROR "-- ZLIB version too old, please install at least v1.1.2")
-ENDIF(NOT HAVE_ZEXPORT)
+ENDIF(ZLIB_VERSION_STRING VERSION_LESS "1.1.2")
 
 IF(MSVC)
 ADD_DEFINITIONS("-D_CRT_SECURE_NO_WARNING")