ref: 82fd32d67426f4d58663d3d382478473c95ac27c
dir: /builds/cmake/iOS.cmake/
# iOS.cmake
#
# Copyright (C) 2014-2021 by
# David Turner, Robert Wilhelm, and Werner Lemberg.
#
# Written by David Wimsey <david@wimsey.us>
#
# This file is part of the FreeType project, and may only be used, modified,
# and distributed under the terms of the FreeType project license,
# LICENSE.TXT. By continuing to use, modify, or distribute this file you
# indicate that you have read the license and understand and accept it
# fully.
#
#
# This file is derived from the files `Platform/Darwin.cmake' and
# `Platform/UnixPaths.cmake', which are part of CMake 2.8.4. It has been
# altered for iOS development.
# Options
# -------
#
# IOS_PLATFORM = OS | SIMULATOR
#
# This decides whether SDKS are selected from the `iPhoneOS.platform' or
# `iPhoneSimulator.platform' folders.
#
# OS - the default, used to build for iPhone and iPad physical devices,
# which have an ARM architecture.
# SIMULATOR - used to build for the Simulator platforms, which have an
# x86 architecture.
#
# CMAKE_IOS_DEVELOPER_ROOT = /path/to/platform/Developer folder
#
# By default, this location is automatically chosen based on the
# IOS_PLATFORM value above. If you manually set this variable, it
# overrides the default location and forces the use of a particular
# Developer Platform.
#
# CMAKE_IOS_SDK_ROOT = /path/to/platform/Developer/SDKs/SDK folder
#
# By default, this location is automatically chosen based on the
# CMAKE_IOS_DEVELOPER_ROOT value. In this case it is always the most
# up-to-date SDK found in the CMAKE_IOS_DEVELOPER_ROOT path. If you
# manually set this variable, it forces the use of a specific SDK
# version.
#
#
# Macros
# ------
#
# set_xcode_property (TARGET XCODE_PROPERTY XCODE_VALUE)
#
# A convenience macro for setting Xcode specific properties on targets.
#
# Example:
#
# set_xcode_property(myioslib IPHONEOS_DEPLOYMENT_TARGET "3.1")
#
# find_host_package (PROGRAM ARGS)
#
# A macro to find executable programs on the host system, not within the
# iOS environment. Thanks to the `android-cmake' project for providing
# the command.
# standard settings
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)
# 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}")
# hidden visibility is required for cxx on iOS
set(CMAKE_C_FLAGS_INIT "")
set(CMAKE_CXX_FLAGS_INIT
"-headerpad_max_install_names -fvisibility=hidden -fvisibility-inlines-hidden")
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")
# 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.
if (NOT DEFINED CMAKE_INSTALL_NAME_TOOL)
find_program(CMAKE_INSTALL_NAME_TOOL install_name_tool)
endif (NOT DEFINED CMAKE_INSTALL_NAME_TOOL)
# set up 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 ${IOS_PLATFORM} CACHE STRING "Type of iOS Platform")
# check the platform selection and setup for developer root
if (${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 (${IOS_PLATFORM} STREQUAL "SIMULATOR")
set(IOS_PLATFORM_LOCATION "iPhoneSimulator.platform")
# this causes the installers to properly locate the output libraries
set(CMAKE_XCODE_EFFECTIVE_PLATFORMS "-iphonesimulator")
else (${IOS_PLATFORM} STREQUAL "OS")
message(FATAL_ERROR
"Unsupported IOS_PLATFORM value selected. Please choose OS or SIMULATOR.")
endif (${IOS_PLATFORM} STREQUAL "OS")
# set up iOS developer location unless specified manually with
# CMAKE_IOS_DEVELOPER_ROOT --
# note that Xcode 4.3 changed the installation location; choose the most
# recent one available
set(XCODE_POST_43_ROOT
"/Applications/Xcode.app/Contents/Developer/Platforms/${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 ${CMAKE_IOS_SDK_ROOT}
CACHE PATH "Sysroot used for iOS support"
)
# set the architecture for iOS --
# note that currently both ARCHS_STANDARD_32_BIT and
# ARCHS_UNIVERSAL_IPHONE_OS set armv7 only, so set both manually
if (${IOS_PLATFORM} STREQUAL "OS")
set(IOS_ARCH $(ARCHS_STANDARD_32_64_BIT))
else (${IOS_PLATFORM} STREQUAL "OS")
set(IOS_ARCH i386)
endif (${IOS_PLATFORM} STREQUAL "OS")
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)
# eof