isEmpty(QMAKE_MAC_SDK): \
    error("QMAKE_MAC_SDK must be set when using CONFIG += sdk.")

contains(QMAKE_MAC_SDK, .*/.*): \
    error("QMAKE_MAC_SDK can only contain short-form SDK names (eg. macosx, iphoneos)")

QMAKE_MAC_SDK_PATH = $$system("xcodebuild -sdk $$QMAKE_MAC_SDK -version Path 2>/dev/null")
isEmpty(QMAKE_MAC_SDK_PATH): error("Could not resolve SDK path for \'$$QMAKE_MAC_SDK\'")

!equals(MAKEFILE_GENERATOR, XCODE) {
    QMAKE_CFLAGS += -isysroot $$QMAKE_MAC_SDK_PATH
    QMAKE_CXXFLAGS += -isysroot $$QMAKE_MAC_SDK_PATH
    QMAKE_OBJECTIVE_CFLAGS += -isysroot $$QMAKE_MAC_SDK_PATH
    QMAKE_LFLAGS += -Wl,-syslibroot,$$QMAKE_MAC_SDK_PATH
}

sysrootified =
for(val, QMAKE_INCDIR_OPENGL): sysrootified += $${QMAKE_MAC_SDK_PATH}$$val
QMAKE_INCDIR_OPENGL = $$sysrootified

# Resolve SDK version of various tools
for(tool, $$list(QMAKE_CC QMAKE_CXX QMAKE_FIX_RPATH QMAKE_AR QMAKE_RANLIB QMAKE_LINK QMAKE_LINK_SHLIB)) {
    value = $$eval($$tool)
    isEmpty(value): next()

    sysrooted = $$system("xcrun -sdk $$QMAKE_MAC_SDK -find $$first(value)")
    $$tool = $$sysrooted $$member(value, 1, -1)
}

# We use xml as the output format instead of json since plutil on 10.6 does not have that option
QMAKE_MAC_PLATFORM_NAME = $$system("plutil -convert xml1 \"$$QMAKE_MAC_SDK_PATH/SDKSettings.plist\" -o - | " \
    "sed '/^<!DOCTYPE/d' | " \ # Don't look up http://www.apple.com/DTDs/PropertyList-1.0.dtd
    "PERL5LIB= xpath 'string(//key[.=\"PLATFORM_NAME\"]/following-sibling::*[1])' 2>&1 | " \
    "sed 's/.*Value: \\(.*\\)/\\1/'")

isEmpty(QMAKE_MAC_PLATFORM_NAME): error("Could not resolve platform name for SDK '$$QMAKE_MAC_SDK'")

!equals(MAKEFILE_GENERATOR, XCODE) {
    # FIXME: Get the version_min_flag out of the platform's 'Native Build System.xcspec'
    version_identifier = $$replace(QMAKE_MAC_PLATFORM_NAME, iphonesimulator, ios-simulator)

    ios:!host_build: \
        deployment_target = $$QMAKE_IOS_DEPLOYMENT_TARGET
    else: \
        deployment_target = $$QMAKE_MACOSX_DEPLOYMENT_TARGET

    version_min_flag = -m$${version_identifier}-version-min=$$deployment_target
    QMAKE_CFLAGS += $$version_min_flag
    QMAKE_CXXFLAGS += $$version_min_flag
    QMAKE_OBJECTIVE_CFLAGS += $$version_min_flag
    QMAKE_LFLAGS += $$version_min_flag
}