summaryrefslogtreecommitdiff
path: root/3rdparty/zlib/CMakeLists.txt
blob: 3bb4304e788e144891ea0ae5d19fe03edf7cd5ed (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
#
# local copy
#
if( WIN32 )
message( STATUS "Detecting local ZLIB" )
find_path( ZLIB_LOCAL_INCLUDE_DIRS "zlib.h"
	PATHS "${CMAKE_CURRENT_SOURCE_DIR}/include"
	NO_DEFAULT_PATH )
find_library( ZLIB_LOCAL_LIBRARIES
	NAMES zdll
	PATHS "${CMAKE_CURRENT_SOURCE_DIR}/lib"
	NO_DEFAULT_PATH )
mark_as_advanced( ZLIB_LOCAL_LIBRARIES )
mark_as_advanced( ZLIB_LOCAL_INCLUDE_DIRS )

if( ZLIB_LOCAL_LIBRARIES AND ZLIB_LOCAL_INCLUDE_DIRS )
	file( STRINGS "${ZLIB_LOCAL_INCLUDE_DIRS}/zlib.h" ZLIB_H REGEX "^#define[ \t]+ZLIB_VERSION[ \t]+\"[^\"]+\".*$" )
	string( REGEX REPLACE "^.*ZLIB_VERSION[ \t]+\"([^\"]+)\".*$" "\\1" ZLIB_VERSION "${ZLIB_H}" )
	message( STATUS "Found local ZLIB: ${ZLIB_LOCAL_LIBRARIES} (found version ${ZLIB_VERSION})" )
	set( HAVE_LOCAL_ZLIB ON
		CACHE BOOL "zlib is available as a local copy" )
else()
	foreach( _VAR ZLIB_LOCAL_LIBRARIES ZLIB_LOCAL_INCLUDE_DIRS )
		if( NOT "${_VAR}" )
			set( MISSING_VARS ${MISSING_VARS} ${_VAR} )
		endif()
	endforeach()
	message( STATUS "Could NOT find local ZLIB (missing: ${MISSING_VARS})" )
	unset( HAVE_LOCAL_ZLIB CACHE )
endif()
message( STATUS "Detecting local ZLIB - done" )
endif( WIN32 )


#
# system
#
message( STATUS "Detecting system ZLIB" )
unset( ZLIB_LIBRARIES CACHE )
unset( ZLIB_INCLUDE_DIRS CACHE )
find_package( ZLIB )
set( ZLIB_SYSTEM_LIBRARIES ${ZLIB_LIBRARIES}
	CACHE PATH "system zlib libraries" )
set( ZLIB_SYSTEM_INCLUDE_DIRS ${ZLIB_INCLUDE_DIRS}
	CACHE PATH "system zlib include directories" )
mark_as_advanced( ZLIB_SYSTEM_LIBRARIES )
mark_as_advanced( ZLIB_SYSTEM_INCLUDE_DIRS )

if( ZLIB_SYSTEM_LIBRARIES AND ZLIB_SYSTEM_INCLUDE_DIRS )
	set( HAVE_SYSTEM_ZLIB ON
		CACHE BOOL "zlib is available on the system" )
else()
	unset( HAVE_SYSTEM_ZLIB CACHE )
endif()
message( STATUS "Detecting system ZLIB - done" )


#
# configure
#
CONFIGURE_USE_LOCAL_OR_SYSTEM( ZLIB )