cmake_modules/platform.cmake
author koda
Sat, 08 Jun 2013 01:56:23 +0200
changeset 9153 354a9803fe91
parent 9151 1d2df388fcc6
child 9191 fc54667b1203
child 9210 31fedd5ef878
permissions -rw-r--r--
add relro linker tests (issue #663)
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if(APPLE)
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    set(CMAKE_FIND_FRAMEWORK "FIRST")
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#what system are we building for
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    set(minimum_macosx_version $ENV{MACOSX_DEPLOYMENT_TARGET})
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#detect on which system we are: if sw_vers cannot be found for any reason (re)use minimum_macosx_version
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    find_program(sw_vers sw_vers)
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    if(sw_vers)
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        execute_process(COMMAND ${sw_vers} "-productVersion"
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                        OUTPUT_VARIABLE current_macosx_version
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                        OUTPUT_STRIP_TRAILING_WHITESPACE)
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        string(REGEX REPLACE "([0-9]+.[0-9]+).[0-9]+" "\\1" current_macosx_version ${current_macosx_version})
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    else()
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        if(NOT minimum_macosx_version)
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            message(FATAL_ERROR "sw_vers not found! Need explicit MACOSX_DEPLOYMENT_TARGET variable set")
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        else()
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            message("*** sw_vers not found! Fallback to MACOSX_DEPLOYMENT_TARGET variable ***")
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            set(current_macosx_version ${minimum_macosx_version})
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        endif()
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    endif()
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#if nothing is set, we deploy only for the current system
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    if(NOT minimum_macosx_version)
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        set(minimum_macosx_version ${current_macosx_version})
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    endif()
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#lower systems don't have enough processing power anyway
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    if (minimum_macosx_version VERSION_LESS "10.4")
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        message(FATAL_ERROR "Hedgewars is not supported on Mac OS X pre-10.4")
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    endif()
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#workaround for http://playcontrol.net/ewing/jibberjabber/big_behind-the-scenes_chang.html#SDL_mixer (Update 2)
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    if(current_macosx_version VERSION_EQUAL "10.4")
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        find_package(SDL_mixer REQUIRED)
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        set(DYLIB_SMPEG "-dylib_file @loader_path/Frameworks/smpeg.framework/Versions/A/smpeg:${SDLMIXER_LIBRARY}/Versions/A/Frameworks/smpeg.framework/Versions/A/smpeg")
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        set(DYLIB_MIKMOD "-dylib_file @loader_path/Frameworks/mikmod.framework/Versions/A/mikmod:${SDLMIXER_LIBRARY}/Versions/A/Frameworks/mikmod.framework/Versions/A/mikmod")
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        set(CMAKE_C_FLAGS "${DYLIB_SMPEG} ${DYLIB_MIKMOD}")
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        list(APPEND pascal_flags "-k${DYLIB_SMPEG}" "-k${DYLIB_MIKMOD}")
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    endif()
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#CMAKE_OSX_ARCHITECTURES and CMAKE_OSX_SYSROOT need to be set for universal binary and correct linking
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    if(NOT CMAKE_OSX_ARCHITECTURES)
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        if(current_macosx_version VERSION_LESS "10.6")
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            if(${CMAKE_SYSTEM_PROCESSOR} MATCHES "powerpc*")
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                set(CMAKE_OSX_ARCHITECTURES "ppc7400")
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            else()
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                set(CMAKE_OSX_ARCHITECTURES "i386")
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            endif()
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        else()
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            set(CMAKE_OSX_ARCHITECTURES "x86_64")
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        endif()
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    endif()
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#CMAKE_OSX_SYSROOT is set at the system version we are supposed to build on
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#we need to provide the correct one when host and target differ
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    if(NOT ${minimum_macosx_version} VERSION_EQUAL ${current_macosx_version})
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        if(minimum_macosx_version VERSION_EQUAL "10.4")
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            set(CMAKE_OSX_SYSROOT "/Developer/SDKs/MacOSX10.4u.sdk/")
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            set(CMAKE_C_COMPILER "/Developer/usr/bin/gcc-4.0")
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            set(CMAKE_CXX_COMPILER "/Developer/usr/bin/g++-4.0")
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        else()
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            string(REGEX REPLACE "([0-9]+.[0-9]+).[0-9]+" "\\1" sdk_version ${minimum_macosx_version})
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            set(CMAKE_OSX_SYSROOT "/Developer/SDKs/MacOSX${sdk_version}.sdk/")
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        endif()
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    endif()
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#add user framework directory, other paths can be passed via FPFLAGS
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    list(APPEND pascal_flags "-Ff~/Library/Frameworks")
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#set deployment target
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    list(APPEND pascal_flags "-k-macosx_version_min" "-k${minimum_macosx_version}" "-XR${CMAKE_OSX_SYSROOT}")
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endif(APPLE)
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if(WINDOWS)
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    #this flags prevents a few dll hell problems
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    set(CMAKE_C_FLAGS "-static-libgcc ${CMAKE_C_FLAGS}")
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endif(WINDOWS)
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