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 # Create the zlibdefs.h file.
64 # Note: we create it in CMAKE_CURRENT_SOURCE_DIR instead
65 # of CMAKE_CURRENT_BINARY_DIR because an empty zlibdefs.h
66 # is shipped with zlib in the source tree.
67 configure_file(${CMAKE_CURRENT_SOURCE_DIR}/zlibdefs.h.cmakein
68 ${CMAKE_CURRENT_SOURCE_DIR}/zlibdefs.h)
71 set(CMAKE_DEBUG_POSTFIX "d")
72 add_definitions(-D_CRT_SECURE_NO_DEPRECATE)
73 add_definitions(-D_CRT_NONSTDC_NO_DEPRECATE)
76 #============================================================================
78 #============================================================================
116 # parse the full version number from zlib.h and include in ZLIB_FULL_VERSION
117 file(READ ${CMAKE_CURRENT_SOURCE_DIR}/zlib.h _zlib_h_contents)
118 string(REGEX REPLACE ".*#define[ \t]+ZLIB_VERSION[ \t]+\"([0-9A-Za-z.]+)\".*"
119 "\\1" ZLIB_FULL_VERSION ${_zlib_h_contents})
122 # This gets us DLL resource information when compiling on MinGW.
123 add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj
126 -I ${CMAKE_CURRENT_SOURCE_DIR}
127 -o ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj
128 -i ${CMAKE_CURRENT_SOURCE_DIR}/win32/zlib1.rc)
129 set(ZLIB_SRCS ${ZLIB_SRCS} ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj)
132 add_library(zlib ${ZLIB_SRCS} ${ZLIB_PUBLIC_HDRS} ${ZLIB_PRIVATE_HDRS})
133 set_target_properties(zlib PROPERTIES DEFINE_SYMBOL ZLIB_DLL)
135 set_target_properties(zlib PROPERTIES SOVERSION 1)
138 # This property causes shared libraries on Linux to have the full version
139 # encoded into their final filename. We disable this on Cygwin because
140 # it causes cygz-${ZLIB_FULL_VERSION}.dll to be created when cygz.dll
141 # seems to be the default.
143 # This has no effect with MSVC, on that platform the version info for
144 # the DLL comes from the resource file win32/zlib1.rc
145 set_target_properties(zlib PROPERTIES VERSION ${ZLIB_FULL_VERSION})
149 # On unix-like platforms the library is almost always called libz
150 set_target_properties(zlib PROPERTIES OUTPUT_NAME z)
151 elseif(BUILD_SHARED_LIBS AND WIN32)
152 # Creates zlib1.dll when building shared library version
153 set_target_properties(zlib PROPERTIES SUFFIX "1.dll")
156 if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL )
158 RUNTIME DESTINATION bin
159 ARCHIVE DESTINATION lib
160 LIBRARY DESTINATION lib )
162 if(NOT SKIP_INSTALL_HEADERS AND NOT SKIP_INSTALL_ALL )
163 install(FILES ${ZLIB_PUBLIC_HDRS} DESTINATION include)
165 if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL )
166 install(FILES zlib.3 DESTINATION share/man/man3)
169 #============================================================================
171 #============================================================================
173 add_executable(example example.c)
174 target_link_libraries(example zlib)
175 add_test(example example)
177 add_executable(minigzip minigzip.c)
178 target_link_libraries(minigzip zlib)
181 add_executable(example64 example.c)
182 target_link_libraries(example64 zlib)
183 set_target_properties(example64 PROPERTIES COMPILE_FLAGS "-D_FILE_OFFSET_BITS=64")
184 add_test(example64 example64)
186 add_executable(minigzip64 minigzip.c)
187 target_link_libraries(minigzip64 zlib)
188 set_target_properties(minigzip64 PROPERTIES COMPILE_FLAGS "-D_FILE_OFFSET_BITS=64")