qt5base-lts/mkspecs/features/mac/sdk.prf
Tor Arne Vestbø 9ff1310af5 Distinguish between Objective-C and Objective-C++ sources
Instead of lumping both Objective-C (.m) and Objective-C++ (.mm) sources
into the same pile, passing them on to the same compiler as for C++ (CXX),
with the C++ flags (CXXFLAGS), we follow Apple's lead and treat them as
variants of the C and C++ languages separately, so that Objective-C
sources are built with CC and with CFLAGS, and Objective-C++ sources
with CXX, and CXXFLAGS.

This lets us remove a lot of duplicated flags and definitions from the
QMAKE_OBJECTIVE_CFLAGS variable, which in 99% of the cases just matched
the C++ equivalent. The remaining Objective-C/C++ flags are added to
CFLAGS/CXXFLAGS, as the compiler will just ignore them when running in
C/C++ mode. This matches Xcode, which also doesn't have a separate build
setting for Objective-C/C++ flags.

The Makefile qmake generator has been rewritten to support Objective-C/C++
fully, by not assuming that we're just iterating over the C and C++
extensions when dealing with compilation rules, precompiled headers, etc.
There's some duplicated logic in this code, as inherent by qmake's already
duplicated code paths, but this can be cleaned up when C++11 support is
mandatory and we can use lambda functions.

Task-number: QTBUG-36575
Change-Id: I4f06576d5f49e939333a2e03d965da54119e5e31
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@theqtcompany.com>
2015-10-09 15:15:17 +00:00

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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)")
isEmpty(QMAKE_MAC_SDK.$${QMAKE_MAC_SDK}.path) {
QMAKE_MAC_SDK_PATH = $$system("/usr/bin/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\'")
cache(QMAKE_MAC_SDK.$${QMAKE_MAC_SDK}.path, set stash, QMAKE_MAC_SDK_PATH)
} else {
QMAKE_MAC_SDK_PATH = $$eval(QMAKE_MAC_SDK.$${QMAKE_MAC_SDK}.path)
}
isEmpty(QMAKE_MAC_SDK.$${QMAKE_MAC_SDK}.platform_path) {
QMAKE_MAC_SDK_PLATFORM_PATH = $$system("/usr/bin/xcodebuild -sdk $$QMAKE_MAC_SDK -version PlatformPath 2>/dev/null")
isEmpty(QMAKE_MAC_SDK_PLATFORM_PATH): error("Could not resolve SDK platform path for \'$$QMAKE_MAC_SDK\'")
cache(QMAKE_MAC_SDK.$${QMAKE_MAC_SDK}.platform_path, set stash, QMAKE_MAC_SDK_PLATFORM_PATH)
} else {
QMAKE_MAC_SDK_PLATFORM_PATH = $$eval(QMAKE_MAC_SDK.$${QMAKE_MAC_SDK}.platform_path)
}
isEmpty(QMAKE_MAC_SDK.$${QMAKE_MAC_SDK}.version) {
QMAKE_MAC_SDK_VERSION = $$system("/usr/bin/xcodebuild -sdk $$QMAKE_MAC_SDK -version SDKVersion 2>/dev/null")
isEmpty(QMAKE_MAC_SDK_VERSION): error("Could not resolve SDK version for \'$$QMAKE_MAC_SDK\'")
cache(QMAKE_MAC_SDK.$${QMAKE_MAC_SDK}.version, set stash, QMAKE_MAC_SDK_VERSION)
} else {
QMAKE_MAC_SDK_VERSION = $$eval(QMAKE_MAC_SDK.$${QMAKE_MAC_SDK}.version)
}
!equals(MAKEFILE_GENERATOR, XCODE) {
QMAKE_CFLAGS += -isysroot $$QMAKE_MAC_SDK_PATH
QMAKE_CXXFLAGS += -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 = $$sysrootified
QMAKESPEC_NAME = $$basename(QMAKESPEC)
# Resolve SDK version of various tools
for(tool, $$list(QMAKE_CC QMAKE_CXX QMAKE_FIX_RPATH QMAKE_AR QMAKE_RANLIB QMAKE_LINK QMAKE_LINK_SHLIB)) {
tool_variable = QMAKE_MAC_SDK.$${QMAKESPEC_NAME}.$${QMAKE_MAC_SDK}.$${tool}
!isEmpty($$tool_variable) {
$$tool = $$eval($$tool_variable)
next()
}
value = $$eval($$tool)
isEmpty(value): next()
sysrooted = $$system("/usr/bin/xcrun -sdk $$QMAKE_MAC_SDK -find $$first(value) 2>/dev/null")
isEmpty(sysrooted): next()
$$tool = $$sysrooted $$member(value, 1, -1)
cache($$tool_variable, set stash, $$tool)
}
isEmpty(QMAKE_MAC_SDK.$${QMAKE_MAC_SDK}.platform_name) {
QMAKE_MAC_PLATFORM_NAME = $$system("/usr/libexec/PlistBuddy -c 'print DefaultProperties:PLATFORM_NAME' $$QMAKE_MAC_SDK_PATH/SDKSettings.plist 2>/dev/null")
isEmpty(QMAKE_MAC_PLATFORM_NAME): error("Could not resolve platform name for SDK '$$QMAKE_MAC_SDK'")
cache(QMAKE_MAC_SDK.$${QMAKE_MAC_SDK}.platform_name, set stash, QMAKE_MAC_PLATFORM_NAME)
} else {
QMAKE_MAC_PLATFORM_NAME = $$eval(QMAKE_MAC_SDK.$${QMAKE_MAC_SDK}.platform_name)
}
!equals(MAKEFILE_GENERATOR, XCODE) {
# FIXME: Get the version_min_flag out of the platform's 'Native Build System.xcspec'
version_identifier = $$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_LFLAGS += $$version_min_flag
}