Only read version information from zlib.h.in

This is a patch for https://github.com/zlib-ng/zlib-ng/commit/cd458c79c7923e76ffdd0e2638bf2a0eed4f3996
As the commit message says: "Add code to extract version information
for both ZLIB and ZLIBNG variants from the zlib.h file."

The logic of ${SUFFIX} is that zlib-ng reads version information after
parse ZLIB_COMPAT before the commit mentioned above. ${SUFFIX} will only
be set by ZLIB_COMPAT and is meaningless before ZLIB_COMPAT.

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4f5b6cf5171cf785aab86850a0a9b3bbed4f4473..9170ed5871b53ec92d347506269c76c1b05e40c5 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -23,8 +23,8 @@ if(NOT CMAKE_C_STANDARD IN_LIST VALID_C_STANDARDS)
     MESSAGE(FATAL_ERROR "CMAKE_C_STANDARD:STRING=${CMAKE_C_STANDARD} not in known standards list\n ${VALID_C_STANDARDS}")
 endif()
 
-# Parse the full version number from zlib.h and include in ZLIB_FULL_VERSION
-file(READ ${CMAKE_CURRENT_SOURCE_DIR}/zlib${SUFFIX}.h.in _zlib_h_contents)
+# Parse the full version number from zlib.h.in and include in ZLIB_FULL_VERSION
+file(READ ${CMAKE_CURRENT_SOURCE_DIR}/zlib.h.in _zlib_h_contents)
 string(REGEX REPLACE ".*#define[ \t]+ZLIB_VERSION[ \t]+\"([0-9]+.[0-9]+.[0-9]+).*\".*"
         "\\1" ZLIB_HEADER_VERSION ${_zlib_h_contents})
 string(REGEX REPLACE ".*#define[ \t]+ZLIBNG_VERSION[ \t]+\"([-0-9A-Za-z.]+)\".*"