1 cmake_minimum_required(VERSION 2.4.4)
2 set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS ON)
6 if(NOT DEFINED BUILD_SHARED_LIBS)
7 option(BUILD_SHARED_LIBS "Build a shared library form of zlib" ON)
10 include(CheckTypeSize)
11 include(CheckFunctionExists)
12 include(CheckIncludeFile)
13 include(CheckCSourceCompiles)
16 check_include_file(sys/types.h HAVE_SYS_TYPES_H)
17 check_include_file(stdint.h HAVE_STDINT_H)
18 check_include_file(stddef.h HAVE_STDDEF_H)
21 # Check to see if we have large file support
23 set(CMAKE_REQUIRED_DEFINITIONS -D_LARGEFILE64_SOURCE)
24 # We add these other definitions here because CheckTypeSize.cmake
25 # in CMake 2.4.x does not automatically do so and we want
26 # compatibility with CMake 2.4.x.
28 list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_SYS_TYPES_H)
31 list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_STDINT_H)
34 list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_STDDEF_H)
36 check_type_size(off64_t OFF64_T)
38 add_definitions(-D_LARGEFILE64_SOURCE)
40 set(CMAKE_REQUIRED_DEFINITIONS) # clear variable
45 check_function_exists(fseeko HAVE_FSEEKO)
47 add_definitions(-DNO_FSEEKO)
53 check_include_file(unistd.h HAVE_UNISTD_H)
57 check_include_file(errno.h HAVE_ERRNO_H)
59 add_definitions(-DNO_ERRNO_H)
63 set(CMAKE_DEBUG_POSTFIX "d")
64 add_definitions(-D_CRT_SECURE_NO_DEPRECATE)
65 add_definitions(-D_CRT_NONSTDC_NO_DEPRECATE)
68 #============================================================================
70 #============================================================================
107 # parse the full version number from zlib.h and include in ZLIB_FULL_VERSION
108 file(READ ${CMAKE_CURRENT_SOURCE_DIR}/zlib.h _zlib_h_contents)
109 string(REGEX REPLACE ".*#define[ \t]+ZLIB_VERSION[ \t]+\"([0-9A-Za-z.]+)\".*"
110 "\\1" ZLIB_FULL_VERSION ${_zlib_h_contents})
113 # This gets us DLL resource information when compiling on MinGW.
114 add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj
117 -I ${CMAKE_CURRENT_SOURCE_DIR}
118 -o ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj
119 -i ${CMAKE_CURRENT_SOURCE_DIR}/win32/zlib1.rc)
120 set(ZLIB_SRCS ${ZLIB_SRCS} ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj)
123 add_library(zlib ${ZLIB_SRCS} ${ZLIB_PUBLIC_HDRS} ${ZLIB_PRIVATE_HDRS})
124 set_target_properties(zlib PROPERTIES DEFINE_SYMBOL ZLIB_DLL)
126 set_target_properties(zlib PROPERTIES SOVERSION 1)
129 # This property causes shared libraries on Linux to have the full version
130 # encoded into their final filename. We disable this on Cygwin because
131 # it causes cygz-${ZLIB_FULL_VERSION}.dll to be created when cygz.dll
132 # seems to be the default.
134 # This has no effect with MSVC, on that platform the version info for
135 # the DLL comes from the resource file win32/zlib1.rc
136 set_target_properties(zlib PROPERTIES VERSION ${ZLIB_FULL_VERSION})
140 # On unix-like platforms the library is almost always called libz
141 set_target_properties(zlib PROPERTIES OUTPUT_NAME z)
142 elseif(BUILD_SHARED_LIBS AND WIN32)
143 # Creates zlib1.dll when building shared library version
144 set_target_properties(zlib PROPERTIES SUFFIX "1.dll")
147 if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL )
149 RUNTIME DESTINATION bin
150 ARCHIVE DESTINATION lib
151 LIBRARY DESTINATION lib )
153 if(NOT SKIP_INSTALL_HEADERS AND NOT SKIP_INSTALL_ALL )
154 install(FILES ${ZLIB_PUBLIC_HDRS} DESTINATION include)
156 if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL )
157 install(FILES zlib.3 DESTINATION share/man/man3)
160 #============================================================================
162 #============================================================================
164 add_executable(example example.c)
165 target_link_libraries(example zlib)
166 add_test(example example)
168 add_executable(minigzip minigzip.c)
169 target_link_libraries(minigzip zlib)
172 add_executable(example64 example.c)
173 target_link_libraries(example64 zlib)
174 set_target_properties(example64 PROPERTIES COMPILE_FLAGS "-D_FILE_OFFSET_BITS=64")
175 add_test(example64 example64)
177 add_executable(minigzip64 minigzip.c)
178 target_link_libraries(minigzip64 zlib)
179 set_target_properties(minigzip64 PROPERTIES COMPILE_FLAGS "-D_FILE_OFFSET_BITS=64")