Source/cmake/WebKitCommon.cmake

# -----------------------------------------------------------------------------
# This file is included individually from various subdirectories (JSC, WTF,
# WebCore, WebKit) in order to allow scripts to build only part of WebKit.
# We want to run this file only once.
# -----------------------------------------------------------------------------
if (NOT HAS_RUN_WEBKIT_COMMON)
    set(HAS_RUN_WEBKIT_COMMON TRUE)

    # -----------------------------------------------------------------------------
    # Find common packages (used by all ports)
    # -----------------------------------------------------------------------------
    if (WIN32)
        list(APPEND CMAKE_PROGRAM_PATH $ENV{SystemDrive}/cygwin/bin)
    endif ()

    # TODO Enforce version requirement for perl
    find_package(Perl 5.10.0 REQUIRED)
    find_package(PerlModules COMPONENTS JSON::PP REQUIRED)

    set(Python_ADDITIONAL_VERSIONS 3)
    find_package(PythonInterp 2.7.0 REQUIRED)

    # We cannot check for RUBY_FOUND because it is set only when the full package is installed and
    # the only thing we need is the interpreter. Unlike Python, cmake does not provide a macro
    # for finding only the Ruby interpreter.
    find_package(Ruby 1.9)
    if (NOT RUBY_EXECUTABLE OR RUBY_VERSION VERSION_LESS 1.9)
        message(FATAL_ERROR "Ruby 1.9 or higher is required.")
    endif ()

    # -----------------------------------------------------------------------------
    # Helper macros and feature defines
    # -----------------------------------------------------------------------------

    # To prevent multiple inclusion, most modules should be included once here.
    include(CheckCCompilerFlag)
    include(CheckCXXCompilerFlag)
    include(CheckCXXSourceCompiles)
    include(CheckFunctionExists)
    include(CheckIncludeFile)
    include(CheckSymbolExists)
    include(CheckStructHasMember)
    include(CheckTypeSize)
    include(CMakeDependentOption)
    include(CMakeParseArguments)
    include(ProcessorCount)

    include(WebKitPackaging)
    include(WebKitMacros)
    include(WebKitFS)
    include(WebKitCCache)
    include(WebKitCompilerFlags)
    include(WebKitStaticAnalysis)
    include(WebKitFeatures)
    include(WebKitFindPackage)

    include(OptionsCommon)
    include(Options${PORT})

    # Check gperf after including OptionsXXX.cmake since gperf is required only when ENABLE_WEBCORE is true,
    # and ENABLE_WEBCORE is configured in OptionsXXX.cmake.
    if (ENABLE_WEBCORE)
        # TODO Enforce version requirement for gperf
        find_package(Gperf 3.0.1 REQUIRED)
    endif ()

    # -----------------------------------------------------------------------------
    # Job pool to avoid running too many memory hungry linker processes
    # -----------------------------------------------------------------------------
    if (${CMAKE_BUILD_TYPE} STREQUAL "Release" OR ${CMAKE_BUILD_TYPE} STREQUAL "MinSizeRel")
        set_property(GLOBAL PROPERTY JOB_POOLS link_pool_jobs=4)
    else ()
        set_property(GLOBAL PROPERTY JOB_POOLS link_pool_jobs=2)
    endif ()
    set(CMAKE_JOB_POOL_LINK link_pool_jobs)

    # -----------------------------------------------------------------------------
    # Create derived sources directories
    # -----------------------------------------------------------------------------

    if (ENABLE_WEBCORE)
        file(MAKE_DIRECTORY ${DERIVED_SOURCES_WEBCORE_DIR})
    endif ()

    if (ENABLE_WEBKIT)
        file(MAKE_DIRECTORY ${DERIVED_SOURCES_WEBKIT_DIR})
    endif ()

    if (ENABLE_WEBKIT_LEGACY)
        file(MAKE_DIRECTORY ${DERIVED_SOURCES_WEBKITLEGACY_DIR})
    endif ()

    if (ENABLE_WEBDRIVER)
        file(MAKE_DIRECTORY ${DERIVED_SOURCES_WEBDRIVER_DIR})
    endif ()

    # -----------------------------------------------------------------------------
    # config.h
    # -----------------------------------------------------------------------------
    CREATE_CONFIGURATION_HEADER()

    SET_CONFIGURATION_FOR_UNIFIED_SOURCE_LISTS()
endif ()