321 lines
13 KiB
CMake
321 lines
13 KiB
CMake
# This file is part of the ios-cmake project. It was retrieved from
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# https://github.com/cristeab/ios-cmake.git, which is a fork of
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# https://code.google.com/p/ios-cmake/. Which in turn is based off of
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# the Platform/Darwin.cmake and Platform/UnixPaths.cmake files which
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# are included with CMake 2.8.4
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#
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# The ios-cmake project is licensed under the new BSD license.
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#
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# Copyright (c) 2014, Bogdan Cristea and LTE Engineering Software,
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# Kitware, Inc., Insight Software Consortium. All rights reserved.
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# 3. Neither the name of the copyright holder nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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# This file is based off of the Platform/Darwin.cmake and
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# Platform/UnixPaths.cmake files which are included with CMake 2.8.4
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# It has been altered for iOS development.
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#
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# Updated by Alex Stewart (alexs.mac@gmail.com).
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# The following variables control the behaviour of this toolchain:
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#
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# IOS_PLATFORM: OS (default) or SIMULATOR or SIMULATOR64
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# OS = Build for iPhoneOS.
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# SIMULATOR = Build for x86 i386 iPhone Simulator.
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# SIMULATOR64 = Build for x86 x86_64 iPhone Simulator.
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# CMAKE_OSX_SYSROOT: Path to the iOS SDK to use. By default this is
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# automatically determined from IOS_PLATFORM and xcodebuild, but
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# can also be manually specified (although this should not be required).
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# CMAKE_IOS_DEVELOPER_ROOT: Path to the Developer directory for the iOS platform
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# being compiled for. By default this is automatically determined from
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# CMAKE_OSX_SYSROOT, but can also be manually specified (although this should
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# not be required).
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#
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# This toolchain defines the following variables for use externally:
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#
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# XCODE_VERSION: Version number (not including Build version) of Xcode detected.
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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
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# 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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# Get the Xcode version being used.
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execute_process(COMMAND xcodebuild -version
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OUTPUT_VARIABLE XCODE_VERSION
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ERROR_QUIET
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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string(REGEX MATCH "Xcode [0-9\\.]+" XCODE_VERSION "${XCODE_VERSION}")
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string(REGEX REPLACE "Xcode ([0-9\\.]+)" "\\1" XCODE_VERSION "${XCODE_VERSION}")
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message(STATUS "Building with Xcode version: ${XCODE_VERSION}")
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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 "SIMULATOR64")
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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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# Determine the platform name and architectures for use in xcodebuild commands
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# from the specified IOS_PLATFORM name.
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if (IOS_PLATFORM STREQUAL "OS")
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set(XCODE_IOS_PLATFORM iphoneos)
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set(IOS_ARCH armv7 armv7s arm64)
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elseif (IOS_PLATFORM STREQUAL "SIMULATOR")
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set(XCODE_IOS_PLATFORM iphonesimulator)
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set(IOS_ARCH i386)
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elseif(IOS_PLATFORM STREQUAL "SIMULATOR64")
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set(XCODE_IOS_PLATFORM iphonesimulator)
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set(IOS_ARCH x86_64)
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else()
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message(FATAL_ERROR "Invalid IOS_PLATFORM: ${IOS_PLATFORM}")
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endif()
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message(STATUS "Configuring iOS build for platform: ${IOS_PLATFORM}, "
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"architecture(s): ${IOS_ARCH}")
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# If user did not specify the SDK root to use, then query xcodebuild for it.
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if (NOT CMAKE_OSX_SYSROOT)
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execute_process(COMMAND xcodebuild -version -sdk ${XCODE_IOS_PLATFORM} Path
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OUTPUT_VARIABLE CMAKE_OSX_SYSROOT
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ERROR_QUIET
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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message(STATUS "Using SDK: ${CMAKE_OSX_SYSROOT} for platform: ${IOS_PLATFORM}")
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endif()
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if (NOT EXISTS ${CMAKE_OSX_SYSROOT})
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message(FATAL_ERROR "Invalid CMAKE_OSX_SYSROOT: ${CMAKE_OSX_SYSROOT} "
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"does not exist.")
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endif()
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# Get the SDK version information.
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execute_process(COMMAND xcodebuild -sdk ${CMAKE_OSX_SYSROOT} -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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# Find the Developer root for the specific iOS platform being compiled for
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# from CMAKE_OSX_SYSROOT. Should be ../../ from SDK specified in
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# CMAKE_OSX_SYSROOT. There does not appear to be a direct way to obtain
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# this information from xcrun or xcodebuild.
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if (NOT CMAKE_IOS_DEVELOPER_ROOT)
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get_filename_component(IOS_PLATFORM_SDK_DIR ${CMAKE_OSX_SYSROOT} PATH)
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get_filename_component(CMAKE_IOS_DEVELOPER_ROOT ${IOS_PLATFORM_SDK_DIR} PATH)
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endif()
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if (NOT EXISTS ${CMAKE_IOS_DEVELOPER_ROOT})
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message(FATAL_ERROR "Invalid CMAKE_IOS_DEVELOPER_ROOT: "
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"${CMAKE_IOS_DEVELOPER_ROOT} does not exist.")
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endif()
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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_OSX_SYSROOT} -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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message(STATUS "Using C compiler: ${CMAKE_C_COMPILER}")
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endif()
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if (NOT CMAKE_CXX_COMPILER)
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execute_process(COMMAND xcrun -sdk ${CMAKE_OSX_SYSROOT} -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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message(STATUS "Using CXX compiler: ${CMAKE_CXX_COMPILER}")
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endif()
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# Find (Apple's) libtool.
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execute_process(COMMAND xcrun -sdk ${CMAKE_OSX_SYSROOT} -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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message(STATUS "Using libtool: ${IOS_LIBTOOL}")
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# Configure libtool to be used instead of ar + ranlib to build static libraries.
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# This is required on Xcode 7+, but should also work on previous versions of
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# Xcode.
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set(CMAKE_C_CREATE_STATIC_LIBRARY
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"${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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# Get the version of Darwin (OS X) of the host.
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execute_process(COMMAND uname -r
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OUTPUT_VARIABLE CMAKE_HOST_SYSTEM_VERSION
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ERROR_QUIET
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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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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# Force unset of OS X-specific deployment target (otherwise autopopulated),
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# required as of cmake 2.8.10.
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set(CMAKE_OSX_DEPLOYMENT_TARGET "" CACHE STRING
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"Must be empty for iOS builds." FORCE)
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# Set the architectures for which to build.
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set(CMAKE_OSX_ARCHITECTURES ${IOS_ARCH} CACHE STRING "Build architecture for iOS")
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# Skip the platform compiler checks for cross compiling.
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set(CMAKE_CXX_COMPILER_FORCED TRUE)
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set(CMAKE_CXX_COMPILER_WORKS TRUE)
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set(CMAKE_C_COMPILER_FORCED TRUE)
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set(CMAKE_C_COMPILER_WORKS TRUE)
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# All iOS/Darwin specific settings - some may be redundant.
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set(CMAKE_SHARED_LIBRARY_PREFIX "lib")
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set(CMAKE_SHARED_LIBRARY_SUFFIX ".dylib")
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set(CMAKE_SHARED_MODULE_PREFIX "lib")
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set(CMAKE_SHARED_MODULE_SUFFIX ".so")
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set(CMAKE_MODULE_EXISTS 1)
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set(CMAKE_DL_LIBS "")
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set(CMAKE_C_OSX_COMPATIBILITY_VERSION_FLAG "-compatibility_version ")
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set(CMAKE_C_OSX_CURRENT_VERSION_FLAG "-current_version ")
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set(CMAKE_CXX_OSX_COMPATIBILITY_VERSION_FLAG "${CMAKE_C_OSX_COMPATIBILITY_VERSION_FLAG}")
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set(CMAKE_CXX_OSX_CURRENT_VERSION_FLAG "${CMAKE_C_OSX_CURRENT_VERSION_FLAG}")
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# Specify minimum version as latest SDK version. Note that only Xcode 7+
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# supports the newer more specific: -m${XCODE_IOS_PLATFORM}-version-min flags,
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# older versions of Xcode use: -m(ios/ios-simulator)-version-min instead.
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if (XCODE_VERSION VERSION_LESS 7.0)
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if (IOS_PLATFORM STREQUAL "OS")
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set(XCODE_IOS_PLATFORM_VERSION_FLAGS
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"-mios-version-min=${IOS_SDK_VERSION}")
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else()
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# SIMULATOR or SIMULATOR64 both use -mios-simulator-version-min.
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set(XCODE_IOS_PLATFORM_VERSION_FLAGS
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"-mios-simulator-version-min=${IOS_SDK_VERSION}")
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endif()
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else()
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# Xcode 7.0+ uses flags we can build directly from XCODE_IOS_PLATFORM.
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set(XCODE_IOS_PLATFORM_VERSION_FLAGS
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"-m${XCODE_IOS_PLATFORM}-version-min=${IOS_SDK_VERSION}")
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endif()
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set(CMAKE_C_FLAGS
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"${XCODE_IOS_PLATFORM_VERSION_FLAGS} -fobjc-abi-version=2 -fobjc-arc ${CMAKE_C_FLAGS}")
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# Hidden visibilty is required for C++ on iOS.
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set(CMAKE_CXX_FLAGS
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"${XCODE_IOS_PLATFORM_VERSION_FLAGS} -fvisibility=hidden -fvisibility-inlines-hidden -fobjc-abi-version=2 -fobjc-arc ${CMAKE_CXX_FLAGS}")
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set(CMAKE_CXX_FLAGS_RELEASE "-DNDEBUG -O3 -fomit-frame-pointer -ffast-math ${CMAKE_CXX_FLAGS_RELEASE}")
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set(CMAKE_C_LINK_FLAGS "${XCODE_IOS_PLATFORM_VERSION_FLAGS} -Wl,-search_paths_first ${CMAKE_C_LINK_FLAGS}")
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set(CMAKE_CXX_LINK_FLAGS "${XCODE_IOS_PLATFORM_VERSION_FLAGS} -Wl,-search_paths_first ${CMAKE_CXX_LINK_FLAGS}")
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# In order to ensure that the updated compiler flags are used in try_compile()
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# tests, we have to forcibly set them in the CMake cache, not merely set them
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# in the local scope.
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list(APPEND VARS_TO_FORCE_IN_CACHE
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CMAKE_C_FLAGS
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CMAKE_CXX_FLAGS
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CMAKE_CXX_RELEASE
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CMAKE_C_LINK_FLAGS
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CMAKE_CXX_LINK_FLAGS)
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foreach(VAR_TO_FORCE ${VARS_TO_FORCE_IN_CACHE})
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set(${VAR_TO_FORCE} "${${VAR_TO_FORCE}}" CACHE STRING "" FORCE)
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endforeach()
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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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# 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, Alex.
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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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# 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} ${CMAKE_OSX_SYSROOT}
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${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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${CMAKE_OSX_SYSROOT}/System/Library/Frameworks
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${CMAKE_OSX_SYSROOT}/System/Library/PrivateFrameworks
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${CMAKE_OSX_SYSROOT}/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 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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# 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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