# -------------------------------------------------------------------
# This file does basic 'configure' style checks to determine the
# set of enable/use/have defines and their values.
#
# See 'Tools/qmake/README' for an overview of the build system
# -------------------------------------------------------------------

# This file is read after .qmake.cache, but before command line options,
# which means we might have a config from a previous build.

load(features)
load(configure)

WEBKIT_TOOLS_CONFIG = \
    build_drt \
    build_wtr \
    build_imagediff \
    build_test_npapi \
    build_testbrowser \
    build_minibrowser \
    build_qttestsupport

defineTest(runConfigure) {
    !webkit_configured:!print_defaults {
        log($${EOL}Running configure tests...$${EOL}$${EOL})
        QMAKE_CONFIG_TESTS_DIR = $$ROOT_WEBKIT_DIR/Tools/qmake/config.tests
        CONFIG_TESTS = $$files($$QMAKE_CONFIG_TESTS_DIR/*.pro, true)
        for(test, CONFIG_TESTS) {
            test = $$basename(test)
            test ~= s/\\.pro$//
            qtCompileTest($$test)
        }
    } else {
        CONFIG += skipped_config_tests

        # Save and reset configuration from .qmake.cache, so that we can
        # detect changes to the configuration and abort the build.
        PREVIOUS_WEBKIT_CONFIG = $$WEBKIT_CONFIG
        unset(WEBKIT_CONFIG)
        export(PREVIOUS_WEBKIT_CONFIG)
    }

    # Running feature detection inside a function ensures that we only
    # export WEBKIT_CONFIG, and don not mess up any other variables.
    detectFeatures()

    # Set up a base list of optional things to build, which we later on
    # sanitize based on constraints of the platform.

    WEBKIT_CONFIG += \
        build_webkit1 \
        build_webkit2 \
        build_tests \
        $$WEBKIT_TOOLS_CONFIG

    # Sanatize WebKit1/WebKit2, as WebKit.pro uses these two options
    # to determine which pro-files to include. The remaining sanitazion
    # is done when finalizing configure.

    !qtHaveModule(widgets) {
        CONFIGURE_WARNINGS += "Missing QtWidgets module, disabling WebKit1"
        WEBKIT_CONFIG -= build_webkit1
    }

    # WebKit2 requires OpenGL TextureMapper, which requires 3D Graphics
    !use?(3d_graphics): WEBKIT_CONFIG -= build_webkit2

    export(CONFIG)
    export(WEBKIT_CONFIG)
    export(CONFIGURE_WARNINGS)
}

defineReplace(configEnabled) {
    trueValue = $$2
    isEmpty(trueValue): trueValue = yes

    falseValue = $$3
    isEmpty(falseValue): falseValue = no

    $$1: return($$trueValue)
    return($$falseValue)
}

# This is called from default_post, at which point we've also parsed
# command line options
defineTest(finalizeConfigure) {

    # Sanitize build options
    !qtHaveModule(testlib) {
        CONFIGURE_WARNINGS += "Missing QtTest module, disabling DumpRenderTree, WebKitTestRunner and tests"
        WEBKIT_CONFIG -= build_drt build_wtr build_tests
    }

    win32|!enable?(NETSCAPE_PLUGIN_API): WEBKIT_CONFIG -= build_test_npapi

    win* {
        WEBKIT_CONFIG -= build_drt
    }

    production_build {
        WEBKIT_CONFIG -= $$WEBKIT_TOOLS_CONFIG build_tests
    }

    static {
        CONFIGURE_WARNINGS += "QtWebKitQml will not be build. It is not supported with static linking"
        WEBKIT_CONFIG -= build_webkit2 build_minibrowser build_wtr
    }

    production_build:qnx {
        CONFIGURE_WARNINGS += "QtWebKitQml will not be build. It is not supported on QNX."
        WEBKIT_CONFIG -= build_webkit2 build_minibrowser build_wtr
    }

    # Sanitize clashing options
    sanitizeFeatures()

    print_defaults {
        log(DEFINES: $$configDefines()$${EOL})
        error(Done computing defaults)
    }

    # Sanity checks that would prevent us from building the whole project altogether.
    !config_icu:!osx:!use?(wchar_unicode) {
       addReasonForSkippingBuild("ICU is required.")
    }
    production_build:blackberry {
        addReasonForSkippingBuild("Build not supported on BB10.")
    }
    production_build:android {
        addReasonForSkippingBuild("Build not supported on Android.")
    }
    production_build:contains(QT_CONFIG, mirclient) {
        addReasonForSkippingBuild("Build not supported on Ubuntu Touch.")
    }
    !gnu_thin_archives:!win32-msvc2013:!mingw:contains(QT_CONFIG, static) {
        addReasonForSkippingBuild("QtWebKit cannot be built as a static library on this platform. Check your configuration in qtbase/config.summary.")
    }
    winrt: addReasonForSkippingBuild("QtWebKit is not supported on Windows Phone/Windows RT")
    requiredPrograms = gperf python perl bison ruby flex
    for(program, requiredPrograms): \
        !programExistsInPath($$program): \
            addReasonForSkippingBuild("Missing $$program from PATH")

    requiredModules = gui
    for(module, requiredModules): \
        !qtHaveModule($$module): \
            addReasonForSkippingBuild("QtWebKit depends on $$module for building.")

    # Detect changes to the configuration. Changes need a clean build.
    webkit_configured {
        added_features = $$WEBKIT_CONFIG
        added_features -= $$PREVIOUS_WEBKIT_CONFIG

        removed_features = $$PREVIOUS_WEBKIT_CONFIG
        removed_features -= $$WEBKIT_CONFIG

        !isEmpty(added_features)|!isEmpty(removed_features) {
            CONFIG += configuration_changed
        }
    }

    reconfigureMsg = \
        "Reconfiguration likely requires a clean build. You$${QUOTE}ve been warned!" \
        "You may execute $${QUOTE}make wipeclean$${QUOTE} to wipe the build directory."

    # Add target for reconfiguring the build
    reconfigure.target = reconfigure
    double_quote = $$escape_expand(\")
    reconfigure.commands = echo > .qmake.cache && $(MAKE) -f $(MAKEFILE) qmake $$EOC
    reconfigure.commands += @echo $${double_quote}WARNING: $$join(reconfigureMsg,\\n,,)\\n$${double_quote}
    QMAKE_EXTRA_TARGETS += reconfigure
    export(reconfigure.target)
    export(reconfigure.commands)
    export(QMAKE_EXTRA_TARGETS)

    # Add target for wiping clean the build
    wipeclean.target = wipeclean
    win_cmd_shell: wipeclean.commands = FOR /D %%p IN (*) DO rmdir "%%p" /s /q
    else: wipeclean.commands = $(COPY_FILE) $(MAKEFILE) .$(MAKEFILE) && rm -Rf * && $(MOVE) .$(MAKEFILE) $(MAKEFILE)
    QMAKE_EXTRA_TARGETS += wipeclean
    export(wipeclean.target)
    export(wipeclean.commands)
    export(QMAKE_EXTRA_TARGETS)

    # Print a prettified dump of the configuration, for easier debugging
    !webkit_configured|configuration_changed|buildbot {

        skipped_config_tests {
            log($${EOL}Skipping configure tests. Execute $${QUOTE}make reconfigure$${QUOTE} to re-run.$${EOL})
        }

        leftoverConfig = $$WEBKIT_CONFIG

        for(config, WEBKIT_CONFIG) {
            match = $$find(config, "^build_")
            !isEmpty(match) {
                build += $$replace(match, ^build_,)
                leftoverConfig -= $$config
                next()
            }
            match = $$find(config, "^have_")
            !isEmpty(match) {
                have += $$replace(match, ^have_,)
                leftoverConfig -= $$config
                next()
            }
            match = $$find(config, "^use_")
            !isEmpty(match) {
                use += $$replace(match, ^use_,)
                leftoverConfig -= $$config
            }
        }

        scripts_dir = $$toSystemPath($$ROOT_WEBKIT_DIR/Tools/Scripts)
        features = $$system(perl -I $${scripts_dir} -I $${scripts_dir}$${QMAKE_DIR_SEP}webkitperl $$toSystemPath($$ROOT_WEBKIT_DIR/Tools/qmake/dump-features.pl))
        for(feature, features) {
            parts = $$split(feature, =)
            desc = $$member(parts, 0, 0)
            desc ~= s/_/ /
            value = $$member(parts, 1, 1)

            contains(WEBKIT_CONFIG, $$value) {
                leftoverConfig -= $$value
                value = yes
            } else {
                value = no
            }

            featureConfiguration += "$$desc $$value$${EOL}"
        }

        log($${EOL}Final configuration:$${EOL}$${EOL})

        debug:release:debug_and_release: buildConfig = debug+release
        else: CONFIG(debug, debug|release): buildConfig = debug
        else: buildConfig = release

        log(Build ......................... $$build$${EOL})
        log(Configuration ................. $$buildConfig$${EOL})
        log(All-in-one files .............. $$configEnabled(use_all_in_one_files)$$EOL)
        log(GNUmake ....................... $$configEnabled(GNUmake)$$EOL)
        log(Static libs as shared ......... $$configEnabled(force_static_libs_as_shared)$$EOL)
        log(Static libs as thin archives .. $$configEnabled(gnu_thin_archives)$$EOL)
        log(Production build .............. $$configEnabled(production_build)$$EOL)
        log($$EOL)

        log(Have .......................... $$have$${EOL})
        log(Use ........................... $$use$${EOL})
        log(Features ...................... $${leftoverConfig}$${EOL})
        log($$EOL)

        for(feature, featureConfiguration) {
            log($$feature)
        }

        !isEmpty(CONFIGURE_WARNINGS) {
            log("$${EOL}Encountered $$size(CONFIGURE_WARNINGS) configuration warning(s):$${EOL}$${EOL}")
            for(warn, CONFIGURE_WARNINGS) {
                log(" ! $$warn$${EOL}")
            }
        }

        !isEmpty(skipBuildReason) {
            log("$${EOL}The WebKit build was disabled for the following reasons: $$skipBuildReason $${EOL}$${EOL}")
            SUBDIRS=
            export(SUBDIRS)
        } else {
            log("$${EOL}WebKit is now configured for building. Just run 'make'.$${EOL}$${EOL}")
        }

        configuration_changed {
            log(WARNING: The configuration was changed since the last build:$${EOL}$${EOL})

            !isEmpty(added_features): log($${TAB}Added feature(s): $${added_features}$${EOL})
            !isEmpty(removed_features): log($${TAB}Removed feature(s): $${removed_features}$${EOL})

            log($$join(reconfigureMsg,$${EOL},$${EOL},$${EOL}$${EOL}))
        }
    }

    # Cache the result for all the other project files, and for
    # the next build, so we can detect changes to the config.
    !webkit_configured|configuration_changed {
        !configuration_changed: cache(CONFIG, add, $$list(webkit_configured))

        msg = "$${EOL}$${LITERAL_HASH} Configuration changed $$_DATE_"
        write_file($$_QMAKE_CACHE_, msg, append)

        !configuration_changed {
            cache(WEBKIT_CONFIG, set, WEBKIT_CONFIG)
        } else {
            !isEmpty(added_features): cache(WEBKIT_CONFIG, add, added_features)
            !isEmpty(removed_features): cache(WEBKIT_CONFIG, sub, removed_features)
        }
    }
}