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CMake.ios.cmake Maven / Gradle / Ivy

set (CMAKE_SYSTEM_NAME Darwin)
set (CMAKE_SYSTEM_VERSION 1)
set (UNIX True)
set (APPLE True)
set (IOS True)

# Required as of cmake 2.8.10
set (CMAKE_OSX_DEPLOYMENT_TARGET "" CACHE STRING "Force unset of the deployment target for iOS" FORCE)

# Determine the cmake host system version so we know where to find the iOS SDKs
find_program (CMAKE_UNAME uname /bin /usr/bin /usr/local/bin)
if (CMAKE_UNAME)
        exec_program(uname ARGS -r OUTPUT_VARIABLE CMAKE_HOST_SYSTEM_VERSION)
        string (REGEX REPLACE "^([0-9]+)\\.([0-9]+).*$" "\\1" DARWIN_MAJOR_VERSION "${CMAKE_HOST_SYSTEM_VERSION}")
endif (CMAKE_UNAME)

# Force the compilers to Clang for iOS
include (CMakeForceCompiler)
set(CMAKE_C_COMPILER /usr/bin/clang Clang)
set(CMAKE_CXX_COMPILER /usr/bin/clang++ Clang)
set(CMAKE_AR ar CACHE FILEPATH "" FORCE)

# Skip the platform compiler checks for cross compiling
set (CMAKE_CXX_COMPILER_WORKS TRUE)
set (CMAKE_C_COMPILER_WORKS TRUE)

# All iOS/Darwin specific settings - some may be redundant
set (CMAKE_SHARED_LIBRARY_PREFIX "lib")
set (CMAKE_SHARED_LIBRARY_SUFFIX ".dylib")
set (CMAKE_SHARED_MODULE_PREFIX "lib")
set (CMAKE_SHARED_MODULE_SUFFIX ".so")
set (CMAKE_MODULE_EXISTS 1)
set (CMAKE_DL_LIBS "")

set (CMAKE_C_OSX_COMPATIBILITY_VERSION_FLAG "-compatibility_version ")
set (CMAKE_C_OSX_CURRENT_VERSION_FLAG "-current_version ")
set (CMAKE_CXX_OSX_COMPATIBILITY_VERSION_FLAG "${CMAKE_C_OSX_COMPATIBILITY_VERSION_FLAG}")
set (CMAKE_CXX_OSX_CURRENT_VERSION_FLAG "${CMAKE_C_OSX_CURRENT_VERSION_FLAG}")

set (CMAKE_C_FLAGS_INIT "")
set (CMAKE_CXX_FLAGS_INIT "")

set (CMAKE_C_LINK_FLAGS "-Wl,-search_paths_first ${CMAKE_C_LINK_FLAGS}")
set (CMAKE_CXX_LINK_FLAGS "-Wl,-search_paths_first ${CMAKE_CXX_LINK_FLAGS}")

set (CMAKE_PLATFORM_HAS_INSTALLNAME 1)
set (CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS "-dynamiclib -headerpad_max_install_names")
set (CMAKE_SHARED_MODULE_CREATE_C_FLAGS "-bundle -headerpad_max_install_names")
set (CMAKE_SHARED_MODULE_LOADER_C_FLAG "-Wl,-bundle_loader,")
set (CMAKE_SHARED_MODULE_LOADER_CXX_FLAG "-Wl,-bundle_loader,")
set (CMAKE_FIND_LIBRARY_SUFFIXES ".dylib" ".so" ".a")
set (CMAKE_MACOSX_BUNDLE ON)
set (CMAKE_XCODE_ATTRIBUTE_CODE_SIGNING_REQUIRED OFF)

# hack: if a new cmake (which uses CMAKE_INSTALL_NAME_TOOL) runs on an old build tree
# (where install_name_tool was hardcoded) and where CMAKE_INSTALL_NAME_TOOL isn't in the cache
# and still cmake didn't fail in CMakeFindBinUtils.cmake (because it isn't rerun)
# hardcode CMAKE_INSTALL_NAME_TOOL here to install_name_tool, so it behaves as it did before, Alex
if (NOT DEFINED CMAKE_INSTALL_NAME_TOOL)
        find_program(CMAKE_INSTALL_NAME_TOOL install_name_tool)
endif (NOT DEFINED CMAKE_INSTALL_NAME_TOOL)

# Setup iOS platform unless specified manually with IOS_PLATFORM
if (NOT DEFINED IOS_PLATFORM)
        set (IOS_PLATFORM "OS")
endif (NOT DEFINED IOS_PLATFORM)
set (IOS_PLATFORM ${IOS_PLATFORM} CACHE STRING "Type of iOS Platform")

# Setup building for arm64 or not
if (NOT DEFINED BUILD_ARM64)
    set (BUILD_ARM64 true)
endif (NOT DEFINED BUILD_ARM64)
set (BUILD_ARM64 ${BUILD_ARM64} CACHE STRING "Build arm64 arch or not")

# Check the platform selection and setup for developer root
if (IOS_PLATFORM STREQUAL "OS")
        set (IOS_PLATFORM_LOCATION "iPhoneOS.platform")

        # This causes the installers to properly locate the output libraries
        set (CMAKE_XCODE_EFFECTIVE_PLATFORMS "-iphoneos")
elseif (IOS_PLATFORM STREQUAL "SIMULATOR")
    set (SIMULATOR true)
    set (IOS_PLATFORM_LOCATION "iPhoneSimulator.platform")

    # This causes the installers to properly locate the output libraries
    set (CMAKE_XCODE_EFFECTIVE_PLATFORMS "-iphonesimulator")
elseif (IOS_PLATFORM STREQUAL "SIMULATOR64")
    set (SIMULATOR true)
    set (IOS_PLATFORM_LOCATION "iPhoneSimulator.platform")

    # This causes the installers to properly locate the output libraries
            set (CMAKE_XCODE_EFFECTIVE_PLATFORMS "-iphonesimulator")
    else ()
            message (FATAL_ERROR "Unsupported IOS_PLATFORM value selected. Please choose OS or SIMULATOR")
    endif ()

    # Setup iOS developer location unless specified manually with CMAKE_IOS_DEVELOPER_ROOT
    # Note Xcode 4.3 changed the installation location, choose the most recent one available
    set (XCODE_POST_43_ROOT "/Applications/Xcode.app/Contents/Developer/Platforms/${IOS_PLATFORM_LOCATION}/Developer")
    set (XCODE_PRE_43_ROOT "/Developer/Platforms/${IOS_PLATFORM_LOCATION}/Developer")
    if (NOT DEFINED CMAKE_IOS_DEVELOPER_ROOT)
            if (EXISTS ${XCODE_POST_43_ROOT})
                    set (CMAKE_IOS_DEVELOPER_ROOT ${XCODE_POST_43_ROOT})
            elseif(EXISTS ${XCODE_PRE_43_ROOT})
                    set (CMAKE_IOS_DEVELOPER_ROOT ${XCODE_PRE_43_ROOT})
            endif (EXISTS ${XCODE_POST_43_ROOT})
    endif (NOT DEFINED CMAKE_IOS_DEVELOPER_ROOT)
    set (CMAKE_IOS_DEVELOPER_ROOT ${CMAKE_IOS_DEVELOPER_ROOT} CACHE PATH "Location of iOS Platform")

    # Find and use the most recent iOS sdk unless specified manually with CMAKE_IOS_SDK_ROOT
if (NOT DEFINED CMAKE_IOS_SDK_ROOT)
        file (GLOB _CMAKE_IOS_SDKS "${CMAKE_IOS_DEVELOPER_ROOT}/SDKs/*")
        if (_CMAKE_IOS_SDKS)
                list (SORT _CMAKE_IOS_SDKS)
                list (REVERSE _CMAKE_IOS_SDKS)
                list (GET _CMAKE_IOS_SDKS 0 CMAKE_IOS_SDK_ROOT)
        else (_CMAKE_IOS_SDKS)
                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.")
        endif (_CMAKE_IOS_SDKS)
        message (STATUS "Toolchain using default iOS SDK: ${CMAKE_IOS_SDK_ROOT}")
endif (NOT DEFINED CMAKE_IOS_SDK_ROOT)
set (CMAKE_IOS_SDK_ROOT ${CMAKE_IOS_SDK_ROOT} CACHE PATH "Location of the selected iOS SDK")

# Set the sysroot default to the most recent SDK
set (CMAKE_OSX_SYSROOT ${CMAKE_IOS_SDK_ROOT} CACHE PATH "Sysroot used for iOS support")

# set the architecture for iOS
if (IOS_PLATFORM STREQUAL "OS")
    set (IOS_ARCH arm64)
elseif (IOS_PLATFORM STREQUAL "SIMULATOR")
    set (IOS_ARCH i386)
elseif (IOS_PLATFORM STREQUAL "SIMULATOR64")
    set (IOS_ARCH x86_64)
endif ()

set (CMAKE_OSX_ARCHITECTURES ${IOS_ARCH} CACHE string  "Build architecture for iOS")

# Set the find root to the iOS developer roots and to user defined paths
set (CMAKE_FIND_ROOT_PATH ${CMAKE_IOS_DEVELOPER_ROOT} ${CMAKE_IOS_SDK_ROOT} ${CMAKE_PREFIX_PATH} CACHE string  "iOS find search path root")

# default to searching for frameworks first
set (CMAKE_FIND_FRAMEWORK FIRST)

# set up the default search directories for frameworks
set (CMAKE_SYSTEM_FRAMEWORK_PATH
        ${CMAKE_IOS_SDK_ROOT}/System/Library/Frameworks
        ${CMAKE_IOS_SDK_ROOT}/System/Library/PrivateFrameworks
        ${CMAKE_IOS_SDK_ROOT}/Developer/Library/Frameworks
)

# only search the iOS sdks, not the remainder of the host filesystem
set (CMAKE_FIND_ROOT_PATH_MODE_PROGRAM ONLY)
set (CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set (CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)


# This little macro lets you set any XCode specific property
macro (set_xcode_property TARGET XCODE_PROPERTY XCODE_VALUE)
        set_property (TARGET ${TARGET} PROPERTY XCODE_ATTRIBUTE_${XCODE_PROPERTY} ${XCODE_VALUE})
endmacro (set_xcode_property)


# This macro lets you find executable programs on the host system
macro (find_host_package)
        set (CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
        set (CMAKE_FIND_ROOT_PATH_MODE_LIBRARY NEVER)
        set (CMAKE_FIND_ROOT_PATH_MODE_INCLUDE NEVER)
        set (IOS FALSE)

        find_package(${ARGN})

        set (IOS TRUE)
        set (CMAKE_FIND_ROOT_PATH_MODE_PROGRAM ONLY)
        set (CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
        set (CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
endmacro (find_host_package)