275 lines
12 KiB
CMake
275 lines
12 KiB
CMake
# This file is based off of the Platform/Darwin.cmake and Platform/UnixPaths.cmake
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# files which are included with CMake 2.8.4
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# It has been altered for iOS development
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# Options:
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#
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# IOS_PLATFORM = OS (default) or SIMULATOR
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# This decides if SDKS will be selected from the iPhoneOS.platform or iPhoneSimulator.platform folders
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# If not specified, it can be inferred if you pass CMAKE_OSX_ARCHITECTURES
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# Otherwise the default is OS
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# OS - used to build for iPhone and iPad physical devices, which have an arm arch.
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# SIMULATOR - used to build for the Simulator platforms, which have an x86 arch.
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#
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# CMAKE_IOS_DEVELOPER_ROOT = automatic(default) or /path/to/platform/Developer folder
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# By default this location is automatically chosen based on the IOS_PLATFORM value above.
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# If set manually, it will override the default location and force the user of a particular Developer Platform
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#
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# CMAKE_IOS_SDK_ROOT = automatic(default) or /path/to/platform/Developer/SDKs/SDK folder
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# By default this location is automatcially chosen based on the CMAKE_IOS_DEVELOPER_ROOT value.
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# In this case it will always be the most up-to-date SDK found in the CMAKE_IOS_DEVELOPER_ROOT path.
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# If set manually, this will force the use of a specific SDK version
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# This toolchain defines the following variables for use externally:
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#
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# IOS_SDK_VERSION: Version of iOS SDK being used.
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# CMAKE_OSX_ARCHITECTURES: Architectures being compiled for (generated from IOS_PLATFORM).
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#
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# This toolchain defines the following macros for use externally:
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#
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# set_xcode_property (TARGET XCODE_PROPERTY XCODE_VALUE)
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# A convenience macro for setting xcode specific properties on targets
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# example: set_xcode_property (myioslib IPHONEOS_DEPLOYMENT_TARGET "3.1").
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#
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# find_host_package (PROGRAM ARGS)
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# A macro used to find executable programs on the host system, not within the
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# iOS environment. Thanks to the android-cmake project for providing the
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# command.
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#########
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# Default to building for iPhoneOS if not specified otherwise, and we cannot
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# determine the platform from the CMAKE_OSX_ARCHITECTURES variable. The use
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# of CMAKE_OSX_ARCHITECTURES is such that try_compile() projects can correctly
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# determine the value of IOS_PLATFORM from the root project, as
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# CMAKE_OSX_ARCHITECTURES is propagated to them by CMake.
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if (NOT DEFINED IOS_PLATFORM)
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if (CMAKE_OSX_ARCHITECTURES)
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if (CMAKE_OSX_ARCHITECTURES MATCHES ".*arm.*")
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set(IOS_PLATFORM "OS")
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elseif (CMAKE_OSX_ARCHITECTURES MATCHES "i386")
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set(IOS_PLATFORM "SIMULATOR")
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elseif (CMAKE_OSX_ARCHITECTURES MATCHES "x86_64")
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set(IOS_PLATFORM "SIMULATOR")
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endif()
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endif()
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if (NOT IOS_PLATFORM)
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set(IOS_PLATFORM "OS")
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endif()
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endif()
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set(IOS_PLATFORM ${IOS_PLATFORM} CACHE STRING
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"Type of iOS platform for which to build.")
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# Check the platform selection and setup for developer root
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if ("${IOS_PLATFORM}" STREQUAL "OS")
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set (XCODE_PLATFORM iPhoneOS)
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set (IOS_PLATFORM_LOCATION "iPhoneOS.platform")
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set (XCODE_IOS_PLATFORM iphoneos)
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set (IOS_ARCH armv7 armv7s arm64)
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# This causes the installers to properly locate the output libraries
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set (CMAKE_XCODE_EFFECTIVE_PLATFORMS "-iphoneos")
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elseif ("${IOS_PLATFORM}" STREQUAL "SIMULATOR")
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set (SIMULATOR true)
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set (XCODE_PLATFORM iPhoneSimulator)
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set (IOS_PLATFORM_LOCATION "iPhoneSimulator.platform")
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set (XCODE_IOS_PLATFORM iphonesimulator)
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set (IOS_ARCH i386 x86_64)
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# This causes the installers to properly locate the output libraries
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set (CMAKE_XCODE_EFFECTIVE_PLATFORMS "-iphonesimulator")
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else ()
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message (FATAL_ERROR "Unsupported IOS_PLATFORM value selected. Please choose OS or SIMULATOR")
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endif ()
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# Set the architectures for which to build.
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if(NOT DEFINED CMAKE_OSX_ARCHITECTURES)
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set(CMAKE_OSX_ARCHITECTURES ${IOS_ARCH})
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endif()
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message(STATUS "Configuring iOS build for ${CMAKE_OSX_ARCHITECTURES} architectures")
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set(CMAKE_OSX_ARCHITECTURES ${CMAKE_OSX_ARCHITECTURES} CACHE STRING "Build architecture for iOS")
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# Setup iOS developer location unless specified manually with CMAKE_IOS_DEVELOPER_ROOT
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if (NOT DEFINED CMAKE_IOS_DEVELOPER_ROOT)
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set (CMAKE_IOS_DEVELOPER_ROOT "/Applications/Xcode.app/Contents/Developer/Platforms/${IOS_PLATFORM_LOCATION}/Developer")
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endif ()
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set (CMAKE_IOS_DEVELOPER_ROOT ${CMAKE_IOS_DEVELOPER_ROOT} CACHE PATH "Location of iOS Platform")
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# Find and use the most recent iOS sdk unless specified manually with CMAKE_IOS_SDK_ROOT
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if (NOT DEFINED CMAKE_IOS_SDK_ROOT)
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file (GLOB _CMAKE_IOS_SDKS "${CMAKE_IOS_DEVELOPER_ROOT}/SDKs/*")
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if (_CMAKE_IOS_SDKS)
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list (SORT _CMAKE_IOS_SDKS)
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list (REVERSE _CMAKE_IOS_SDKS)
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list (GET _CMAKE_IOS_SDKS 0 CMAKE_IOS_SDK_ROOT)
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else ()
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message (FATAL_ERROR "No iOS SDKs found in default search path ${CMAKE_IOS_DEVELOPER_ROOT}. Manually set CMAKE_IOS_SDK_ROOT or install the iOS SDK.")
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endif ()
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message (STATUS "Toolchain using default iOS SDK: ${CMAKE_IOS_SDK_ROOT}")
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endif ()
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set (CMAKE_IOS_SDK_ROOT ${CMAKE_IOS_SDK_ROOT} CACHE PATH "Location of the selected iOS SDK")
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# Get the SDK version information.
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execute_process(COMMAND xcodebuild -sdk ${CMAKE_IOS_SDK_ROOT} -version SDKVersion
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OUTPUT_VARIABLE IOS_SDK_VERSION
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ERROR_QUIET
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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execute_process(COMMAND xcode-select -p OUTPUT_VARIABLE XCODE_DEVELOPER_DIR OUTPUT_STRIP_TRAILING_WHITESPACE)
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set(XCODE_CPP_INCLUDE_DIR "${XCODE_DEVELOPER_DIR}/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1")
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set(XCODE_SDK_INCLUDE_DIR "${XCODE_DEVELOPER_DIR}/Platforms/${XCODE_PLATFORM}.platform/Developer/SDKs/${XCODE_PLATFORM}.sdk/usr/include")
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set(CMAKE_CXX_STANDARD_INCLUDE_DIRECTORIES "${XCODE_CPP_INCLUDE_DIR}")
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include_directories(BEFORE SYSTEM "${XCODE_SDK_INCLUDE_DIR}")
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set (CMAKE_OSX_SYSROOT ${XCODE_IOS_PLATFORM})
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# Specify minimum version of deployment target.
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# Unless specified, the latest SDK version is used by default.
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if(NOT DEFINED IOS_DEPLOYMENT_TARGET)
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if(DEFINED CMAKE_OSX_DEPLOYMENT_TARGET)
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set(IOS_DEPLOYMENT_TARGET "${CMAKE_OSX_DEPLOYMENT_TARGET}" CACHE STRING "minimum iOS deployment target")
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else()
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set(IOS_DEPLOYMENT_TARGET "${IOS_SDK_VERSION}" CACHE STRING "minimum iOS deployment target")
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endif()
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endif()
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set(XCODE_IOS_PLATFORM_VERSION_FLAGS "-m${XCODE_IOS_PLATFORM}-version-min=${IOS_DEPLOYMENT_TARGET}")
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if(CMAKE_GENERATOR MATCHES "Xcode")
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set(CMAKE_XCODE_ATTRIBUTE_ARCHS "${IOS_ARCH}")
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set(CMAKE_XCODE_ATTRIBUTE_IPHONEOS_DEPLOYMENT_TARGET "${IOS_DEPLOYMENT_TARGET}")
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endif()
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message(STATUS "Building for minimum iOS version: ${IOS_DEPLOYMENT_TARGET}"
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" (SDK version: ${IOS_SDK_VERSION})")
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# Standard settings
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set (CMAKE_SYSTEM_NAME Darwin)
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set (CMAKE_SYSTEM_VERSION ${IOS_SDK_VERSION})
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set (UNIX TRUE)
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set (APPLE TRUE)
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set (IOS TRUE)
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set (APPLE_IOS TRUE)
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# Force unset of OS X-specific deployment target (otherwise autopopulated), required as of cmake 2.8.10.
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set(CMAKE_OSX_DEPLOYMENT_TARGET "" CACHE STRING "Must be empty for iOS builds." FORCE)
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# Find the C & C++ compilers for the specified SDK.
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if (NOT CMAKE_C_COMPILER)
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execute_process(COMMAND xcrun -sdk ${CMAKE_IOS_SDK_ROOT} -find clang
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OUTPUT_VARIABLE CMAKE_C_COMPILER
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ERROR_QUIET
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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endif()
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if (NOT CMAKE_CXX_COMPILER)
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execute_process(COMMAND xcrun -sdk ${CMAKE_IOS_SDK_ROOT} -find clang++
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OUTPUT_VARIABLE CMAKE_CXX_COMPILER
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ERROR_QUIET
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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endif()
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set(CMAKE_CXX_COMPILER_FORCED TRUE)
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set(CMAKE_CXX_COMPILER_WORKS TRUE)
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set(CMAKE_C_COMPILER_FORCED TRUE)
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set(CMAKE_C_COMPILER_WORKS TRUE)
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# Hack: if a new cmake (which uses CMAKE_INSTALL_NAME_TOOL) runs on an old
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# build tree (where install_name_tool was hardcoded) and where
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# CMAKE_INSTALL_NAME_TOOL isn't in the cache and still cmake didn't fail in
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# CMakeFindBinUtils.cmake (because it isn't rerun) hardcode
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# CMAKE_INSTALL_NAME_TOOL here to install_name_tool, so it behaves as it did
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# before
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if (NOT DEFINED CMAKE_INSTALL_NAME_TOOL)
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find_program(CMAKE_INSTALL_NAME_TOOL install_name_tool)
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endif (NOT DEFINED CMAKE_INSTALL_NAME_TOOL)
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# All iOS/Darwin specific settings - some may be redundant.
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set(CMAKE_SHARED_LIBRARY_PREFIX "lib")
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set(CMAKE_SHARED_LIBRARY_SUFFIX ".dylib")
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set(CMAKE_SHARED_MODULE_PREFIX "lib")
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set(CMAKE_SHARED_MODULE_SUFFIX ".so")
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set(CMAKE_MODULE_EXISTS 1)
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set(CMAKE_DL_LIBS "")
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set(CMAKE_C_OSX_COMPATIBILITY_VERSION_FLAG "-compatibility_version ")
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set(CMAKE_C_OSX_CURRENT_VERSION_FLAG "-current_version ")
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set(CMAKE_CXX_OSX_COMPATIBILITY_VERSION_FLAG "${CMAKE_C_OSX_COMPATIBILITY_VERSION_FLAG}")
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set(CMAKE_CXX_OSX_CURRENT_VERSION_FLAG "${CMAKE_C_OSX_CURRENT_VERSION_FLAG}")
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# Force variables set by FindThreads.cmake
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set(CMAKE_THREAD_LIBS_INIT "-lpthread")
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set(CMAKE_HAVE_THREADS_LIBRARY 1)
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set(CMAKE_USE_WIN32_THREADS_INIT 0)
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set(CMAKE_USE_PTHREADS_INIT 1)
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# change default target type for try_compile() calls (iOS doesn't support executable targets)
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set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
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# Hidden visibilty is required for cxx on iOS
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set(CMAKE_C_FLAGS_INIT "")
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set(CMAKE_C_FLAGS "${XCODE_IOS_PLATFORM_VERSION_FLAGS} ${CMAKE_C_FLAGS}" CACHE STRING "" FORCE)
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set(CMAKE_CXX_FLAGS_INIT "")
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set(CMAKE_CXX_FLAGS "${XCODE_IOS_PLATFORM_VERSION_FLAGS} -fvisibility=hidden -fvisibility-inlines-hidden ${CMAKE_CXX_FLAGS}" CACHE STRING "" FORCE)
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set(CMAKE_C_LINK_FLAGS "-Wl,-search_paths_first ${CMAKE_C_LINK_FLAGS}")
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set(CMAKE_CXX_LINK_FLAGS "-Wl,-search_paths_first ${CMAKE_CXX_LINK_FLAGS}")
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set(CMAKE_PLATFORM_HAS_INSTALLNAME 1)
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set(CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS "-dynamiclib -headerpad_max_install_names")
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set(CMAKE_SHARED_MODULE_CREATE_C_FLAGS "-bundle -headerpad_max_install_names")
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set(CMAKE_SHARED_MODULE_LOADER_C_FLAG "-Wl,-bundle_loader,")
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set(CMAKE_SHARED_MODULE_LOADER_CXX_FLAG "-Wl,-bundle_loader,")
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set(CMAKE_FIND_LIBRARY_SUFFIXES ".dylib" ".so" ".a")
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# Set the find root to the iOS developer roots and to user defined paths.
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set(CMAKE_FIND_ROOT_PATH ${CMAKE_IOS_DEVELOPER_ROOT} ${CMAKE_IOS_SDK_ROOT}
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${CMAKE_PREFIX_PATH} CACHE STRING "iOS find search path root" FORCE)
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# Default to searching for frameworks first.
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set(CMAKE_FIND_FRAMEWORK FIRST)
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# Set up the default search directories for frameworks.
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set(CMAKE_SYSTEM_FRAMEWORK_PATH
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${CMAKE_IOS_SDK_ROOT}/System/Library/Frameworks
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${CMAKE_IOS_SDK_ROOT}/System/Library/PrivateFrameworks
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${CMAKE_IOS_SDK_ROOT}/Developer/Library/Frameworks)
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# Only search the specified iOS SDK, not the remainder of the host filesystem.
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set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM BOTH)
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set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
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set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
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set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
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# Find (Apple's) libtool.
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execute_process(COMMAND xcrun -sdk ${CMAKE_IOS_SDK_ROOT} -find libtool
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OUTPUT_VARIABLE IOS_LIBTOOL
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ERROR_QUIET
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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# Configure libtool to be used instead of ar + ranlib to build static libraries.
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# This is required on Xcode 7+, but should also work on previous versions of Xcode.
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set(CMAKE_C_CREATE_STATIC_LIBRARY
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"${IOS_LIBTOOL} -static -o <TARGET> <LINK_FLAGS> <OBJECTS> ")
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set(CMAKE_CXX_CREATE_STATIC_LIBRARY
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"${IOS_LIBTOOL} -static -o <TARGET> <LINK_FLAGS> <OBJECTS> ")
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# This little macro lets you set any XCode specific property.
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macro(set_xcode_property TARGET XCODE_PROPERTY XCODE_VALUE)
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set_property(TARGET ${TARGET} PROPERTY
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XCODE_ATTRIBUTE_${XCODE_PROPERTY} ${XCODE_VALUE})
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endmacro(set_xcode_property)
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# This macro lets you find executable programs on the host system.
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macro(find_host_package)
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set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
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set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY NEVER)
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set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE NEVER)
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set(IOS FALSE)
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find_package(${ARGN})
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set(IOS TRUE)
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set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM ONLY)
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set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
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set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
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endmacro(find_host_package)
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