Home | History | Annotate | Download | only in Platform
      1 # This file is based off of the Platform/Darwin.cmake and Platform/UnixPaths.cmake
      2 # files which are included with CMake 2.8.4
      3 # It has been altered for iOS development
      4 set (UNIX 1)
      5 set (APPLE 1)
      6 set (IOS 1)
      7 
      8 # Darwin versions:
      9 #   6.x == Mac OSX 10.2
     10 #   7.x == Mac OSX 10.3
     11 #   8.x == Mac OSX 10.4
     12 #   9.x == Mac OSX 10.5
     13 #  10.x == Mac OSX 10.6 (Snow Leopard)
     14 string (REGEX REPLACE "^([0-9]+)\\.([0-9]+).*$" "\\1" DARWIN_MAJOR_VERSION "${CMAKE_SYSTEM_VERSION}")
     15 string (REGEX REPLACE "^([0-9]+)\\.([0-9]+).*$" "\\2" DARWIN_MINOR_VERSION "${CMAKE_SYSTEM_VERSION}")
     16 
     17 # Do not use the "-Wl,-search_paths_first" flag with the OSX 10.2 compiler.
     18 # Done this way because it is too early to do a TRY_COMPILE.
     19 if (NOT DEFINED HAVE_FLAG_SEARCH_PATHS_FIRST)
     20     set (HAVE_FLAG_SEARCH_PATHS_FIRST 0)
     21     if ("${DARWIN_MAJOR_VERSION}" GREATER 6)
     22         set (HAVE_FLAG_SEARCH_PATHS_FIRST 1)
     23     endif ("${DARWIN_MAJOR_VERSION}" GREATER 6)
     24 endif (NOT DEFINED HAVE_FLAG_SEARCH_PATHS_FIRST)
     25 # More desirable, but does not work:
     26 #INCLUDE(CheckCXXCompilerFlag)
     27 #CHECK_CXX_COMPILER_FLAG("-Wl,-search_paths_first" HAVE_FLAG_SEARCH_PATHS_FIRST)
     28 
     29 set (CMAKE_SHARED_LIBRARY_PREFIX "lib")
     30 set (CMAKE_SHARED_LIBRARY_SUFFIX ".dylib")
     31 set (CMAKE_SHARED_MODULE_PREFIX "lib")
     32 set (CMAKE_SHARED_MODULE_SUFFIX ".so")
     33 set (CMAKE_MODULE_EXISTS 1)
     34 set (CMAKE_DL_LIBS "")
     35 
     36 set (CMAKE_C_OSX_COMPATIBILITY_VERSION_FLAG "-compatibility_version ")
     37 set (CMAKE_C_OSX_CURRENT_VERSION_FLAG "-current_version ")
     38 set (CMAKE_CXX_OSX_COMPATIBILITY_VERSION_FLAG "${CMAKE_C_OSX_COMPATIBILITY_VERSION_FLAG}")
     39 set (CMAKE_CXX_OSX_CURRENT_VERSION_FLAG "${CMAKE_C_OSX_CURRENT_VERSION_FLAG}")
     40 
     41 # Hidden visibilty is required for cxx on iOS
     42 set (no_warn "-Wno-unused-function -Wno-overloaded-virtual")
     43 set (CMAKE_C_FLAGS "${no_warn}")
     44 set (CMAKE_CXX_FLAGS "-stdlib=libc++ -fvisibility=hidden -fvisibility-inlines-hidden ${no_warn}")
     45 
     46 set (CMAKE_CXX_FLAGS_RELEASE "-DNDEBUG -O3 -fomit-frame-pointer -ffast-math")
     47 
     48 if (HAVE_FLAG_SEARCH_PATHS_FIRST)
     49     set (CMAKE_C_LINK_FLAGS "-Wl,-search_paths_first ${CMAKE_C_LINK_FLAGS}")
     50     set (CMAKE_CXX_LINK_FLAGS "-Wl,-search_paths_first ${CMAKE_CXX_LINK_FLAGS}")
     51 endif (HAVE_FLAG_SEARCH_PATHS_FIRST)
     52 
     53 set (CMAKE_PLATFORM_HAS_INSTALLNAME 1)
     54 set (CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS "-dynamiclib -headerpad_max_install_names")
     55 set (CMAKE_SHARED_MODULE_CREATE_C_FLAGS "-bundle -headerpad_max_install_names")
     56 set (CMAKE_SHARED_MODULE_LOADER_C_FLAG "-Wl,-bundle_loader,")
     57 set (CMAKE_SHARED_MODULE_LOADER_CXX_FLAG "-Wl,-bundle_loader,")
     58 set (CMAKE_FIND_LIBRARY_SUFFIXES ".dylib" ".so" ".a")
     59 
     60 # hack: if a new cmake (which uses CMAKE_INSTALL_NAME_TOOL) runs on an old build tree
     61 # (where install_name_tool was hardcoded) and where CMAKE_INSTALL_NAME_TOOL isn't in the cache
     62 # and still cmake didn't fail in CMakeFindBinUtils.cmake (because it isn't rerun)
     63 # hardcode CMAKE_INSTALL_NAME_TOOL here to install_name_tool, so it behaves as it did before, Alex
     64 if (NOT DEFINED CMAKE_INSTALL_NAME_TOOL)
     65     find_program(CMAKE_INSTALL_NAME_TOOL install_name_tool)
     66 endif (NOT DEFINED CMAKE_INSTALL_NAME_TOOL)
     67 
     68 # Setup iOS developer location
     69 if (IPHONEOS)
     70     set (_CMAKE_IOS_DEVELOPER_ROOT "/Developer/Platforms/iPhoneOS.platform/Developer")
     71 else ()
     72     if (IPHONESIMULATOR)
     73         set (_CMAKE_IOS_DEVELOPER_ROOT "/Developer/Platforms/iPhoneSimulator.platform/Developer")
     74     endif ()
     75 endif ()
     76 # Find installed iOS SDKs
     77 file (GLOB _CMAKE_IOS_SDKS "${_CMAKE_IOS_DEVELOPER_ROOT}/SDKs/*")
     78 
     79 # Find and use the most recent iOS sdk
     80 if (_CMAKE_IOS_SDKS)
     81     list (SORT _CMAKE_IOS_SDKS)
     82     list (REVERSE _CMAKE_IOS_SDKS)
     83     list (GET _CMAKE_IOS_SDKS 0 _CMAKE_IOS_SDK_ROOT)
     84 
     85     # Set the sysroot default to the most recent SDK
     86     set (CMAKE_OSX_SYSROOT ${_CMAKE_IOS_SDK_ROOT} CACHE PATH "Sysroot used for iOS support")
     87 
     88     # set the architecture for iOS - this env var sets armv6,armv7 and appears to be XCode's standard. The other found is ARCHS_UNIVERSAL_IPHONE_OS but that is armv7 only
     89     set (CMAKE_OSX_ARCHITECTURES "$(ARCHS_STANDARD_32_BIT)" CACHE string  "Build architecture for iOS")
     90 
     91     # Set the default based on this file and not the environment variable
     92     set (CMAKE_FIND_ROOT_PATH ${_CMAKE_IOS_DEVELOPER_ROOT} ${_CMAKE_IOS_SDK_ROOT} CACHE string  "iOS library search path root")
     93 
     94     # default to searching for frameworks first
     95     set (CMAKE_FIND_FRAMEWORK FIRST)
     96 
     97     # set up the default search directories for frameworks
     98     set (CMAKE_SYSTEM_FRAMEWORK_PATH
     99         ${_CMAKE_IOS_SDK_ROOT}/System/Library/Frameworks
    100         ${_CMAKE_IOS_SDK_ROOT}/System/Library/PrivateFrameworks
    101         ${_CMAKE_IOS_SDK_ROOT}/Developer/Library/Frameworks
    102     )
    103 endif (_CMAKE_IOS_SDKS)
    104 
    105 if ("${CMAKE_BACKWARDS_COMPATIBILITY}" MATCHES "^1\\.[0-6]$")
    106     set (CMAKE_SHARED_MODULE_CREATE_C_FLAGS "${CMAKE_SHARED_MODULE_CREATE_C_FLAGS} -flat_namespace -undefined suppress")
    107 endif ("${CMAKE_BACKWARDS_COMPATIBILITY}" MATCHES "^1\\.[0-6]$")
    108 
    109 if (NOT XCODE)
    110       # Enable shared library versioning.  This flag is not actually referenced
    111       # but the fact that the setting exists will cause the generators to support
    112       # soname computation.
    113       set (CMAKE_SHARED_LIBRARY_SONAME_C_FLAG "-install_name")
    114 endif (NOT XCODE)
    115 
    116 # Xcode does not support -isystem yet.
    117 if (XCODE)
    118     set (CMAKE_INCLUDE_SYSTEM_FLAG_C)
    119     set (CMAKE_INCLUDE_SYSTEM_FLAG_CXX)
    120 endif (XCODE)
    121 
    122 # Need to list dependent shared libraries on link line.  When building
    123 # with -isysroot (for universal binaries), the linker always looks for
    124 # dependent libraries under the sysroot.  Listing them on the link
    125 # line works around the problem.
    126 set (CMAKE_LINK_DEPENDENT_LIBRARY_FILES 1)
    127 
    128 set (CMAKE_C_CREATE_SHARED_LIBRARY_FORBIDDEN_FLAGS -w)
    129 set (CMAKE_CXX_CREATE_SHARED_LIBRARY_FORBIDDEN_FLAGS -w)
    130 
    131 set (CMAKE_C_CREATE_SHARED_LIBRARY
    132     "<CMAKE_C_COMPILER> <LANGUAGE_COMPILE_FLAGS> <CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS> <LINK_FLAGS> -o <TARGET> -install_name <TARGET_INSTALLNAME_DIR><TARGET_SONAME> <OBJECTS> <LINK_LIBRARIES>")
    133 set (CMAKE_CXX_CREATE_SHARED_LIBRARY
    134     "<CMAKE_CXX_COMPILER> <LANGUAGE_COMPILE_FLAGS> <CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS> <LINK_FLAGS> -o <TARGET> -install_name <TARGET_INSTALLNAME_DIR><TARGET_SONAME> <OBJECTS> <LINK_LIBRARIES>")
    135 
    136 set (CMAKE_CXX_CREATE_SHARED_MODULE
    137     "<CMAKE_CXX_COMPILER> <LANGUAGE_COMPILE_FLAGS> <CMAKE_SHARED_MODULE_CREATE_CXX_FLAGS> <LINK_FLAGS> -o <TARGET> <OBJECTS> <LINK_LIBRARIES>")
    138 
    139 set (CMAKE_C_CREATE_SHARED_MODULE
    140     "<CMAKE_C_COMPILER>  <LANGUAGE_COMPILE_FLAGS> <CMAKE_SHARED_MODULE_CREATE_C_FLAGS> <LINK_FLAGS> -o <TARGET> <OBJECTS> <LINK_LIBRARIES>")
    141 
    142 set (CMAKE_C_CREATE_MACOSX_FRAMEWORK
    143     "<CMAKE_C_COMPILER> <LANGUAGE_COMPILE_FLAGS> <CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS> <LINK_FLAGS> -o <TARGET> -install_name <TARGET_INSTALLNAME_DIR><TARGET_SONAME> <OBJECTS> <LINK_LIBRARIES>")
    144 set (CMAKE_CXX_CREATE_MACOSX_FRAMEWORK
    145     "<CMAKE_CXX_COMPILER> <LANGUAGE_COMPILE_FLAGS> <CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS> <LINK_FLAGS> -o <TARGET> -install_name <TARGET_INSTALLNAME_DIR><TARGET_SONAME> <OBJECTS> <LINK_LIBRARIES>")
    146 
    147 
    148 # Add the install directory of the running cmake to the search directories
    149 # CMAKE_ROOT is CMAKE_INSTALL_PREFIX/share/cmake, so we need to go two levels up
    150 get_filename_component (_CMAKE_INSTALL_DIR "${CMAKE_ROOT}" PATH)
    151 get_filename_component (_CMAKE_INSTALL_DIR "${_CMAKE_INSTALL_DIR}" PATH)
    152 
    153 # List common installation prefixes.  These will be used for all search types
    154 list (APPEND CMAKE_SYSTEM_PREFIX_PATH
    155     # Standard
    156     ${_CMAKE_IOS_DEVELOPER_ROOT}/usr
    157     ${_CMAKE_IOS_SDK_ROOT}/usr
    158 
    159     # CMake install location
    160     "${_CMAKE_INSTALL_DIR}"
    161 
    162     # Project install destination.
    163     "${CMAKE_INSTALL_PREFIX}"
    164 )
    165