cmake_modules/platform.cmake
author Wuzzy <Wuzzy2@mail.ru>
Tue, 29 Oct 2019 16:56:21 +0100
changeset 15493 6a880692afbc
parent 15312 5b2dec63f4cf
permissions -rw-r--r--
HedgeEditor: Use localized voicepack names
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if(APPLE)
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    #minimum for macOS.  sorry!
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    cmake_minimum_required(VERSION 3.9.0)
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    #set c++11 standard for QT requirements
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    set(CMAKE_CXX_STANDARD 11)
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    set(CMAKE_CXX_STANDARD_REQUIRED ON)
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    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -stdlib=libc++")
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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 ${current_macosx_version})
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    endif()
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    #minimum OSX version is 10.8.  Earlier versions cannot compile some dependencies anymore
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    #(like ffmpeg/libav)
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    if(minimum_macosx_version VERSION_LESS "10.8")
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        message(FATAL_ERROR "Hedgewars is unsupported on your platform and requires Mac OS X 10.8+")
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    endif()
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    #parse this system variable and adjust only the powerpc syntax to be compatible with -P
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    if(CMAKE_OSX_ARCHITECTURES)
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        string(REGEX MATCH "[pP][pP][cC]+" powerpc_build "${CMAKE_OSX_ARCHITECTURES}")
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        string(REGEX MATCH "[iI]386+" i386_build "${CMAKE_OSX_ARCHITECTURES}")
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        string(REGEX MATCH "[xX]86_64+" x86_64_build "${CMAKE_OSX_ARCHITECTURES}")
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        if(x86_64_build)
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            add_flag_prepend(CMAKE_Pascal_FLAGS -Px86_64)
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        elseif(i386_build)
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            add_flag_prepend(CMAKE_Pascal_FLAGS -Pi386)
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        elseif(powerpc_build)
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            add_flag_prepend(CMAKE_Pascal_FLAGS -Ppowerpc)
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        else()
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            message(FATAL_ERROR "Unknown architecture present in CMAKE_OSX_ARCHITECTURES (${CMAKE_OSX_ARCHITECTURES})")
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        endif()
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        list(LENGTH CMAKE_OSX_ARCHITECTURES num_of_archs)
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        if(num_of_archs GREATER 1)
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            message("*** Only one architecture in CMAKE_OSX_ARCHITECTURES is supported, picking the first one ***")
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        endif()
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    elseif(CMAKE_SIZEOF_VOID_P MATCHES "8")
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        #if that variable is not set check if we are on x86_64 and if so force it, else use default
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        add_flag_prepend(CMAKE_Pascal_FLAGS -Px86_64)
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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 CMAKE_OSX_SYSROOT AND
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       NOT ${minimum_macosx_version} VERSION_EQUAL ${current_macosx_version})
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        find_program(xcrun xcrun)
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        if(xcrun)
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            execute_process(COMMAND ${xcrun} "--show-sdk-path"
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                            OUTPUT_VARIABLE current_sdk_path
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                            OUTPUT_STRIP_TRAILING_WHITESPACE)
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            string(REPLACE "${current_macosx_version}"
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                           "${minimum_macosx_version}"
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                           CMAKE_OSX_SYSROOT
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                           "${current_sdk_path}")
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        else()
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            message("*** xcrun not found! Build will work on ${current_macosx_version} only ***")
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        endif()
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    endif()
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    if(CMAKE_OSX_SYSROOT)
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        add_flag_append(CMAKE_Pascal_FLAGS "-XR${CMAKE_OSX_SYSROOT}")
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        add_flag_append(CMAKE_Pascal_FLAGS "-k-macosx_version_min -k${minimum_macosx_version}")
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        add_flag_append(CMAKE_Pascal_FLAGS "-k-L${LIBRARY_OUTPUT_PATH} -Fl${LIBRARY_OUTPUT_PATH}")
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    endif()
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    #add user framework directory
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    add_flag_append(CMAKE_Pascal_FLAGS "-Ff~/Library/Frameworks")
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endif(APPLE)
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if(MINGW)
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    #this flags prevents a few dll hell problems
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    add_flag_append(CMAKE_C_FLAGS "-static-libgcc")
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    add_flag_append(CMAKE_CXX_FLAGS "-static-libgcc")
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endif(MINGW)
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if(WIN32)
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    if(NOT ${BUILD_SHARED_LIB})
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        message(FATAL_ERROR "Static linking is not supported on Windows")
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    endif()
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endif(WIN32)
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if(UNIX)
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    add_flag_append(CMAKE_C_FLAGS "-fPIC")
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    add_flag_append(CMAKE_CXX_FLAGS "-fPIC")
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endif(UNIX)