zlib/CMakeLists.txt

   1 cmake_minimum_required(VERSION 2.4.4)
   2 set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS ON)
   3
   4 project(zlib C)
   5
   6 if(NOT DEFINED BUILD_SHARED_LIBS)
   7     option(BUILD_SHARED_LIBS "Build a shared library form of zlib" ON)
   8 endif()
   9
  10 include(CheckTypeSize)
  11 include(CheckFunctionExists)
  12 include(CheckIncludeFile)
  13 include(CheckCSourceCompiles)
  14 enable_testing()
  15
  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)
  19
  20 #
  21 # Check to see if we have large file support
  22 #
  23 set(CMAKE_REQUIRED_DEFINITIONS -D_LARGEFILE64_SOURCE=1)
  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.
  27 if(HAVE_SYS_TYPES_H)
  28     list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_SYS_TYPES_H)
  29 endif()
  30 if(HAVE_STDINT_H)
  31     list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_STDINT_H)
  32 endif()
  33 if(HAVE_STDDEF_H)
  34     list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_STDDEF_H)
  35 endif()
  36 check_type_size(off64_t OFF64_T)
  37 if(HAVE_OFF64_T)
  38    add_definitions(-D_LARGEFILE64_SOURCE=1)
  39 endif()
  40 set(CMAKE_REQUIRED_DEFINITIONS) # clear variable
  41
  42 #
  43 # Check for fseeko
  44 #
  45 check_function_exists(fseeko HAVE_FSEEKO)
  46 if(NOT HAVE_FSEEKO)
  47     add_definitions(-DNO_FSEEKO)
  48 endif()
  49
  50 #
  51 # Check for unistd.h
  52 #
  53 check_include_file(unistd.h Z_HAVE_UNISTD_H)
  54
  55 if(MSVC)
  56     set(CMAKE_DEBUG_POSTFIX "d")
  57     add_definitions(-D_CRT_SECURE_NO_DEPRECATE)
  58     add_definitions(-D_CRT_NONSTDC_NO_DEPRECATE)
  59 endif()
  60
  61 if(NOT CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_CURRENT_BINARY_DIR)
  62     # If we're doing an out of source build and the user has a zconf.h
  63     # in their source tree...
  64     if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/zconf.h)
  65         message(FATAL_ERROR
  66             "You must remove ${CMAKE_CURRENT_SOURCE_DIR}/zconf.h "
  67             "from the source tree.  This file is included with zlib "
  68             "but CMake generates this file for you automatically "
  69             "in the build directory.")
  70   endif()
  71 endif()
  72
  73 configure_file(${CMAKE_CURRENT_SOURCE_DIR}/zconf.h.cmakein
  74                ${CMAKE_CURRENT_BINARY_DIR}/zconf.h @ONLY)
  75 include_directories(${CMAKE_CURRENT_BINARY_DIR})
  76
  77
  78 #============================================================================
  79 # zlib
  80 #============================================================================
  81
  82 set(ZLIB_PUBLIC_HDRS
  83     ${CMAKE_CURRENT_BINARY_DIR}/zconf.h
  84     zlib.h
  85 )
  86 set(ZLIB_PRIVATE_HDRS
  87     crc32.h
  88     deflate.h
  89     gzguts.h
  90     inffast.h
  91     inffixed.h
  92     inflate.h
  93     inftrees.h
  94     trees.h
  95     zutil.h
  96 )
  97 set(ZLIB_SRCS
  98     adler32.c
  99     compress.c
 100     crc32.c
 101     deflate.c
 102     gzclose.c
 103     gzlib.c
 104     gzread.c
 105     gzwrite.c
 106     inflate.c
 107     infback.c
 108     inftrees.c
 109     inffast.c
 110     trees.c
 111     uncompr.c
 112     zutil.c
 113     win32/zlib1.rc
 114 )
 115
 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})
 120
 121 if(MINGW)
 122     # This gets us DLL resource information when compiling on MinGW.
 123     add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj
 124                        COMMAND windres.exe
 125                             -D GCC_WINDRES
 126                             -I ${CMAKE_CURRENT_SOURCE_DIR}
 127                             -I ${CMAKE_CURRENT_BINARY_DIR}
 128                             -o ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj
 129                             -i ${CMAKE_CURRENT_SOURCE_DIR}/win32/zlib1.rc)
 130     set(ZLIB_SRCS ${ZLIB_SRCS} ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj)
 131 endif(MINGW)
 132
 133 add_library(zlib ${ZLIB_SRCS} ${ZLIB_PUBLIC_HDRS} ${ZLIB_PRIVATE_HDRS})
 134 set_target_properties(zlib PROPERTIES DEFINE_SYMBOL ZLIB_DLL)
 135
 136 set_target_properties(zlib PROPERTIES SOVERSION 1)
 137
 138 if(NOT CYGWIN)
 139     # This property causes shared libraries on Linux to have the full version
 140     # encoded into their final filename.  We disable this on Cygwin because
 141     # it causes cygz-${ZLIB_FULL_VERSION}.dll to be created when cygz.dll
 142     # seems to be the default.
 143     #
 144     # This has no effect with MSVC, on that platform the version info for
 145     # the DLL comes from the resource file win32/zlib1.rc
 146     set_target_properties(zlib PROPERTIES VERSION ${ZLIB_FULL_VERSION})
 147 endif()
 148
 149 if(UNIX)
 150     # On unix-like platforms the library is almost always called libz
 151    set_target_properties(zlib PROPERTIES OUTPUT_NAME z)
 152 elseif(BUILD_SHARED_LIBS AND WIN32)
 153     # Creates zlib1.dll when building shared library version
 154     set_target_properties(zlib PROPERTIES SUFFIX "1.dll")
 155 endif()
 156
 157 if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL )
 158     install(TARGETS zlib
 159         RUNTIME DESTINATION bin
 160         ARCHIVE DESTINATION lib
 161         LIBRARY DESTINATION lib )
 162 endif()
 163 if(NOT SKIP_INSTALL_HEADERS AND NOT SKIP_INSTALL_ALL )
 164     install(FILES ${ZLIB_PUBLIC_HDRS} DESTINATION include)
 165 endif()
 166 if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL )
 167     install(FILES zlib.3 DESTINATION share/man/man3)
 168 endif()
 169
 170 #============================================================================
 171 # Example binaries
 172 #============================================================================
 173
 174 add_executable(example example.c)
 175 target_link_libraries(example zlib)
 176 add_test(example example)
 177
 178 add_executable(minigzip minigzip.c)
 179 target_link_libraries(minigzip zlib)
 180
 181 if(HAVE_OFF64_T)
 182     add_executable(example64 example.c)
 183     target_link_libraries(example64 zlib)
 184     set_target_properties(example64 PROPERTIES COMPILE_FLAGS "-D_FILE_OFFSET_BITS=64")
 185     add_test(example64 example64)
 186
 187     add_executable(minigzip64 minigzip.c)
 188     target_link_libraries(minigzip64 zlib)
 189     set_target_properties(minigzip64 PROPERTIES COMPILE_FLAGS "-D_FILE_OFFSET_BITS=64")
 190 endif()