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      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 
      5 # Options:
      6 #
      7 # IOS_PLATFORM = OS (default) or SIMULATOR
      8 #   This decides if SDKS will be selected from the iPhoneOS.platform or iPhoneSimulator.platform folders
      9 #   OS - the default, used to build for iPhone and iPad physical devices, which have an arm arch.
     10 #   SIMULATOR - used to build for the Simulator platforms, which have an x86 arch.
     11 #
     12 # CMAKE_IOS_DEVELOPER_ROOT = automatic(default) or /path/to/platform/Developer folder
     13 #   By default this location is automatcially chosen based on the IOS_PLATFORM value above.
     14 #   If set manually, it will override the default location and force the user of a particular Developer Platform
     15 #
     16 # CMAKE_IOS_SDK_ROOT = automatic(default) or /path/to/platform/Developer/SDKs/SDK folder
     17 #   By default this location is automatcially chosen based on the CMAKE_IOS_DEVELOPER_ROOT value.
     18 #   In this case it will always be the most up-to-date SDK found in the CMAKE_IOS_DEVELOPER_ROOT path.
     19 #   If set manually, this will force the use of a specific SDK version
     20 
     21 # Standard settings
     22 set (CMAKE_SYSTEM_NAME Darwin)
     23 set (CMAKE_SYSTEM_VERSION 1)
     24 set (UNIX True)
     25 set (APPLE True)
     26 set (IOS True)
     27 
     28 # Required as of cmake 2.8.10
     29 set (CMAKE_OSX_DEPLOYMENT_TARGET "" CACHE STRING "Force unset of the deployment target for iOS" FORCE)
     30 
     31 # Determine the cmake host system version so we know where to find the iOS SDKs
     32 find_program (CMAKE_UNAME uname /bin /usr/bin /usr/local/bin)
     33 if (CMAKE_UNAME)
     34 	exec_program(uname ARGS -r OUTPUT_VARIABLE CMAKE_HOST_SYSTEM_VERSION)
     35 	string (REGEX REPLACE "^([0-9]+)\\.([0-9]+).*$" "\\1" DARWIN_MAJOR_VERSION "${CMAKE_HOST_SYSTEM_VERSION}")
     36 endif ()
     37 
     38 # Force the compilers to gcc for iOS
     39 include (CMakeForceCompiler)
     40 CMAKE_FORCE_C_COMPILER ("clang" Clang)
     41 CMAKE_FORCE_CXX_COMPILER ("clang++" Clang++)
     42 
     43 # Skip the platform compiler checks for cross compiling
     44 set (CMAKE_CXX_COMPILER_WORKS TRUE)
     45 set (CMAKE_C_COMPILER_WORKS TRUE)
     46 
     47 # All iOS/Darwin specific settings - some may be redundant
     48 set (CMAKE_SHARED_LIBRARY_PREFIX "lib")
     49 set (CMAKE_SHARED_LIBRARY_SUFFIX ".dylib")
     50 set (CMAKE_SHARED_MODULE_PREFIX "lib")
     51 set (CMAKE_SHARED_MODULE_SUFFIX ".so")
     52 set (CMAKE_MODULE_EXISTS 1)
     53 set (CMAKE_DL_LIBS "")
     54 
     55 set (CMAKE_C_OSX_COMPATIBILITY_VERSION_FLAG "-compatibility_version ")
     56 set (CMAKE_C_OSX_CURRENT_VERSION_FLAG "-current_version ")
     57 set (CMAKE_CXX_OSX_COMPATIBILITY_VERSION_FLAG "${CMAKE_C_OSX_COMPATIBILITY_VERSION_FLAG}")
     58 set (CMAKE_CXX_OSX_CURRENT_VERSION_FLAG "${CMAKE_C_OSX_CURRENT_VERSION_FLAG}")
     59 
     60 # Hidden visibilty is required for cxx on iOS
     61 set (CMAKE_C_FLAGS_INIT "")
     62 set (CMAKE_CXX_FLAGS_INIT "-headerpad_max_install_names -fvisibility=hidden -fvisibility-inlines-hidden")
     63 
     64 set (CMAKE_C_LINK_FLAGS "-Wl,-search_paths_first ${CMAKE_C_LINK_FLAGS}")
     65 set (CMAKE_CXX_LINK_FLAGS "-Wl,-search_paths_first ${CMAKE_CXX_LINK_FLAGS}")
     66 
     67 set (CMAKE_PLATFORM_HAS_INSTALLNAME 1)
     68 set (CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS "-dynamiclib -headerpad_max_install_names")
     69 set (CMAKE_SHARED_MODULE_CREATE_C_FLAGS "-bundle -headerpad_max_install_names")
     70 set (CMAKE_SHARED_MODULE_LOADER_C_FLAG "-Wl,-bundle_loader,")
     71 set (CMAKE_SHARED_MODULE_LOADER_CXX_FLAG "-Wl,-bundle_loader,")
     72 set (CMAKE_FIND_LIBRARY_SUFFIXES ".dylib" ".so" ".a")
     73 
     74 # hack: if a new cmake (which uses CMAKE_INSTALL_NAME_TOOL) runs on an old build tree
     75 # (where install_name_tool was hardcoded) and where CMAKE_INSTALL_NAME_TOOL isn't in the cache
     76 # and still cmake didn't fail in CMakeFindBinUtils.cmake (because it isn't rerun)
     77 # hardcode CMAKE_INSTALL_NAME_TOOL here to install_name_tool, so it behaves as it did before, Alex
     78 if (NOT DEFINED CMAKE_INSTALL_NAME_TOOL)
     79 	find_program(CMAKE_INSTALL_NAME_TOOL install_name_tool)
     80 endif ()
     81 
     82 # Setup iOS platform unless specified manually with IOS_PLATFORM
     83 if (NOT DEFINED IOS_PLATFORM)
     84 	set (IOS_PLATFORM "OS")
     85 endif ()
     86 set (IOS_PLATFORM ${IOS_PLATFORM} CACHE STRING "Type of iOS Platform")
     87 
     88 # Check the platform selection and setup for developer root
     89 if (${IOS_PLATFORM} STREQUAL "OS")
     90 	set (IOS_PLATFORM_LOCATION "iPhoneOS.platform")
     91 
     92 	# This causes the installers to properly locate the output libraries
     93 	set (CMAKE_XCODE_EFFECTIVE_PLATFORMS "-iphoneos")
     94 elseif (${IOS_PLATFORM} STREQUAL "SIMULATOR")
     95 	set (IOS_PLATFORM_LOCATION "iPhoneSimulator.platform")
     96 
     97 	# This causes the installers to properly locate the output libraries
     98 	set (CMAKE_XCODE_EFFECTIVE_PLATFORMS "-iphonesimulator")
     99 else ()
    100 	message (FATAL_ERROR "Unsupported IOS_PLATFORM value selected. Please choose OS or SIMULATOR")
    101 endif ()
    102 
    103 # Setup iOS developer location unless specified manually with CMAKE_IOS_DEVELOPER_ROOT
    104 # Note Xcode 4.3 changed the installation location, choose the most recent one available
    105 set (XCODE_POST_43_ROOT "/Applications/Xcode.app/Contents/Developer/Platforms/${IOS_PLATFORM_LOCATION}/Developer")
    106 set (XCODE_PRE_43_ROOT "/Developer/Platforms/${IOS_PLATFORM_LOCATION}/Developer")
    107 if (NOT DEFINED CMAKE_IOS_DEVELOPER_ROOT)
    108 	if (EXISTS ${XCODE_POST_43_ROOT})
    109 		set (CMAKE_IOS_DEVELOPER_ROOT ${XCODE_POST_43_ROOT})
    110 	elseif ()
    111 		set (CMAKE_IOS_DEVELOPER_ROOT ${XCODE_PRE_43_ROOT})
    112 	endif ()
    113 endif ()
    114 set (CMAKE_IOS_DEVELOPER_ROOT ${CMAKE_IOS_DEVELOPER_ROOT} CACHE PATH "Location of iOS Platform")
    115 
    116 # Find and use the most recent iOS sdk unless specified manually with CMAKE_IOS_SDK_ROOT
    117 if (NOT DEFINED CMAKE_IOS_SDK_ROOT)
    118 	file (GLOB _CMAKE_IOS_SDKS "${CMAKE_IOS_DEVELOPER_ROOT}/SDKs/*")
    119 	if (_CMAKE_IOS_SDKS)
    120 		list (SORT _CMAKE_IOS_SDKS)
    121 		list (REVERSE _CMAKE_IOS_SDKS)
    122 		list (GET _CMAKE_IOS_SDKS 0 CMAKE_IOS_SDK_ROOT)
    123 	else ()
    124 		message (FATAL_ERROR "No iOS SDK's found in default search path ${CMAKE_IOS_DEVELOPER_ROOT}. Manually set CMAKE_IOS_SDK_ROOT or install the iOS SDK.")
    125 	endif ()
    126 	message (STATUS "Toolchain using default iOS SDK: ${CMAKE_IOS_SDK_ROOT}")
    127 endif ()
    128 set (CMAKE_IOS_SDK_ROOT ${CMAKE_IOS_SDK_ROOT} CACHE PATH "Location of the selected iOS SDK")
    129 
    130 # Set the sysroot default to the most recent SDK
    131 set (CMAKE_OSX_SYSROOT ${CMAKE_IOS_SDK_ROOT} CACHE PATH "Sysroot used for iOS support")
    132 
    133 # set the architecture for iOS
    134 # NOTE: Currently both ARCHS_STANDARD_32_BIT and ARCHS_UNIVERSAL_IPHONE_OS set armv7 only, so set both manually
    135 if (${IOS_PLATFORM} STREQUAL "OS")
    136 	set (IOS_ARCH	armv7)
    137 #	set (IOS_ARCH	armv6 armv7 armv7s)
    138 	set (DE_CPU		"DE_CPU_ARM")
    139 else (${IOS_PLATFORM} STREQUAL "SIMULATOR")
    140 	set (IOS_ARCH	i386)
    141 	set (DE_CPU		"DE_CPU_X86")
    142 endif ()
    143 
    144 set (CMAKE_OSX_ARCHITECTURES ${IOS_ARCH} CACHE string  "Build architecture for iOS")
    145 
    146 # Set the find root to the iOS developer roots and to user defined paths
    147 set (CMAKE_FIND_ROOT_PATH ${CMAKE_IOS_DEVELOPER_ROOT} ${CMAKE_IOS_SDK_ROOT} ${CMAKE_PREFIX_PATH} CACHE string  "iOS find search path root")
    148 
    149 # default to searching for frameworks first
    150 set (CMAKE_FIND_FRAMEWORK FIRST)
    151 
    152 # set up the default search directories for frameworks
    153 set (CMAKE_SYSTEM_FRAMEWORK_PATH
    154 	${CMAKE_IOS_SDK_ROOT}/System/Library/Frameworks
    155 	${CMAKE_IOS_SDK_ROOT}/System/Library/PrivateFrameworks
    156 	${CMAKE_IOS_SDK_ROOT}/Developer/Library/Frameworks
    157 )
    158 
    159 # only search the iOS sdks, not the remainder of the host filesystem
    160 set (CMAKE_FIND_ROOT_PATH_MODE_PROGRAM ONLY)
    161 set (CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
    162 set (CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
    163 
    164 # dE Defines - DE_CPU is set earlier
    165 set(DE_PTR_SIZE	4)
    166 set(DE_OS		"DE_OS_IOS")
    167 set(DE_COMPILER	"DE_COMPILER_CLANG")
    168