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Darwin: pass -stdlib=libc++ down to cc1 whenever we're targeting libc++ 

Recent refactoring meant it only got passed down when explicitly specified,
which breaks header search on Darwin.

llvm-svn: 260755
This commit is contained in:
Tim Northover 2016-02-12 22:30:42 +00:00
parent df3857c7d4
commit b534ce46bd
2 changed files with 22 additions and 0 deletions
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16
clang/darwin-stdlib.cpp Normal file
View File

@ -0,0 +1,16 @@
// RUN: %clang -target x86_64-apple-darwin -arch arm64 -miphoneos-version-min=7.0 %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-LIBCXX
// RUN: %clang -target x86_64-apple-darwin -mmacosx-version-min=10.8 %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-LIBSTDCXX
// RUN: %clang -target x86_64-apple-darwin -mmacosx-version-min=10.9 %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-LIBCXX
// RUN: %clang -target x86_64-apple-darwin -arch armv7s -miphoneos-version-min=6.1 %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-LIBSTDCXX
// RUN: %clang -target x86_64-apple-darwin -arch armv7s -miphoneos-version-min=7.0 %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-LIBCXX
// RUN: %clang -target x86_64-apple-darwin -arch armv7k %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-LIBCXX
// The purpose of this test is that the libc++ headers should be found
// properly. At the moment this is done by passing -stdlib=libc++ down to the
// cc1 invocation. If and when we change to finding them in the driver this test
// should reflect that.
// CHECK-LIBCXX: -stdlib=libc++
// CHECK-LIBSTDCXX-NOT: -stdlib=libc++
// CHECK-LIBSTDCXX-NOT: -stdlib=libstdc++

6
clang/lib/Driver/ToolChains.cpp
View File

@ -1030,6 +1030,7 @@ DerivedArgList *Darwin::TranslateArgs(const DerivedArgList &Args,
const char *BoundArch) const {
// First get the generic Apple args, before moving onto Darwin-specific ones.
DerivedArgList *DAL = MachO::TranslateArgs(Args, BoundArch);
const OptTable &Opts = getDriver().getOpts();
// If no architecture is bound, none of the translations here are relevant.
if (!BoundArch)
@ -1060,6 +1061,11 @@ DerivedArgList *Darwin::TranslateArgs(const DerivedArgList &Args,
}
}
if (!Args.getLastArg(options::OPT_stdlib_EQ) &&
GetDefaultCXXStdlibType() == ToolChain::CST_Libcxx)
DAL->AddJoinedArg(nullptr, Opts.getOption(options::OPT_stdlib_EQ),
"libc++");
// Validate the C++ standard library choice.
CXXStdlibType Type = GetCXXStdlibType(*DAL);
if (Type == ToolChain::CST_Libcxx) {