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If no -miphoneos-version-min specified, see if we can set the default based on 

-isysroot.
rdar://9837120

llvm-svn: 137075
This commit is contained in:
Chad Rosier 2011-08-08 23:39:34 +00:00
parent cab35c0836
commit 53ea71674c
1 changed files with 15 additions and 0 deletions
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15
clang/lib/Driver/ToolChains.cpp
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@ -490,6 +490,21 @@ void Darwin::AddDeploymentTarget(DerivedArgList &Args) const {
Arg *iOSSimVersion = Args.getLastArg(
options::OPT_mios_simulator_version_min_EQ);
// If no '-miphoneos-version-min' specified, see if we can set the default
// based on isysroot.
if (!iOSVersion) {
if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) {
StringRef first, second;
StringRef isysroot = A->getValue(Args);
llvm::tie(first, second) = isysroot.split(StringRef("SDKs/iPhoneOS"));
if (second != "") {
const Option *O = Opts.getOption(options::OPT_miphoneos_version_min_EQ);
iOSVersion = Args.MakeJoinedArg(0, O, second.substr(0,3));
Args.append(iOSVersion);
}
}
}
// FIXME: HACK! When compiling for the simulator we don't get a
// '-miphoneos-version-min' to help us know whether there is an ARC runtime
// or not; try to parse a __IPHONE_OS_VERSION_MIN_REQUIRED