mirror of
https://github.com/llvm/llvm-project.git
synced 2025-04-27 03:16:07 +00:00
52aab0e4b4
Previously, we would be passing down -stdlib=libc++ from the Driver to CC1 whenever the default standard library on the platform was libc++, even if -stdlib= had not been passed to the Driver. This meant that we would pass -stdlib=libc++ in nonsensical circumstances, such as when compiling C code. This logic had been added in b534ce46bd40 to make sure that header search paths were set up properly. However, since libc++ is now the default Standard Library on Darwin, passing this explicitly is not required anymore. Indeed, if no -stdlib= is specified, CC1 will end up using libc++ if it queries which standard library to use, without having to be told. Not passing -stdlib= at all to CC1 on Darwin should become possible once CC1 stops relying on it to set up framework search paths. Furthermore, this commit also removes a diagnostic checking whether the deployment target is too old to support libc++. Nowadays, all supported deployment targets use libc++ and compiling with libstdc++ is not supported anymore. The Driver was the wrong place to issue this diagnostic since it doesn't know whether libc++ will actually be linked against (e.g. C vs C++), which would lead to spurious diagnostics. Given that these targets are not supported anymore, we simply drop the diagnostic instead of trying to refactor it into CC1. This is a re-application of 6540f32db09c which had been reverted in 49dd02bd0819 because it broke a compiler-rt test. The test had broken because we were compiling C code and passing -stdlib=libc++, which Clang will now warn about. rdar://103198514 Differential Revision: https://reviews.llvm.org/D139938
30 lines
3.1 KiB
C++
30 lines
3.1 KiB
C++
// Make sure that the Driver passes down -stdlib=libc++ to CC1 when specified explicitly.
|
|
//
|
|
// RUN: %clang -target x86_64-apple-darwin -ccc-install-dir %S/Inputs/darwin_toolchain_tree/bin/ -arch arm64 -miphoneos-version-min=7.0 -stdlib=libc++ %s -### 2>&1 | FileCheck --check-prefix=CHECK-LIBCXX %s
|
|
// RUN: %clang -target x86_64-apple-darwin -ccc-install-dir %S/Inputs/darwin_toolchain_tree/bin/ -mmacosx-version-min=10.9 -stdlib=libc++ %s -### 2>&1 | FileCheck --check-prefix=CHECK-LIBCXX %s
|
|
// RUN: %clang -target x86_64-apple-darwin -ccc-install-dir %S/Inputs/darwin_toolchain_tree/bin/ -arch armv7s -miphoneos-version-min=7.0 -stdlib=libc++ %s -### 2>&1 | FileCheck --check-prefix=CHECK-LIBCXX %s
|
|
// RUN: %clang -target x86_64-apple-darwin -ccc-install-dir %S/Inputs/darwin_toolchain_tree/bin/ -arch armv7k -stdlib=libc++ %s -### 2>&1 | FileCheck --check-prefix=CHECK-LIBCXX %s
|
|
// CHECK-LIBCXX: "-stdlib=libc++"
|
|
// CHECK-LIBCXX-NOT: "-stdlib=libstdc++"
|
|
|
|
// Make sure that the Driver passes down -stdlib=libstdc++ to CC1 when specified explicitly. Note that this
|
|
// shouldn't really be used on Darwin because libstdc++ is not supported anymore, but we still pin down the
|
|
// Driver behavior for now.
|
|
//
|
|
// RUN: %clang -target x86_64-apple-darwin -ccc-install-dir %S/Inputs/darwin_toolchain_tree/bin/ -arch arm64 -miphoneos-version-min=7.0 -stdlib=libstdc++ %s -### 2>&1 | FileCheck --check-prefix=CHECK-LIBSTDCXX %s
|
|
// RUN: %clang -target x86_64-apple-darwin -ccc-install-dir %S/Inputs/darwin_toolchain_tree/bin/ -mmacosx-version-min=10.9 -stdlib=libstdc++ %s -### 2>&1 | FileCheck --check-prefix=CHECK-LIBSTDCXX %s
|
|
// RUN: %clang -target x86_64-apple-darwin -ccc-install-dir %S/Inputs/darwin_toolchain_tree/bin/ -arch armv7s -miphoneos-version-min=7.0 -stdlib=libstdc++ %s -### 2>&1 | FileCheck --check-prefix=CHECK-LIBSTDCXX %s
|
|
// RUN: %clang -target x86_64-apple-darwin -ccc-install-dir %S/Inputs/darwin_toolchain_tree/bin/ -arch armv7k -stdlib=libstdc++ %s -### 2>&1 | FileCheck --check-prefix=CHECK-LIBSTDCXX %s
|
|
// CHECK-LIBSTDCXX: "-stdlib=libstdc++"
|
|
// CHECK-LIBSTDCXX-NOT: "-stdlib=libc++"
|
|
|
|
// Make sure that the Driver does not spuriously pass down any -stdlib=<...> option to CC1 if none is
|
|
// specified on the command-line. In that case, CC1 should use the default standard library, which is
|
|
// going to be libc++.
|
|
//
|
|
// RUN: %clang -target x86_64-apple-darwin -ccc-install-dir %S/Inputs/darwin_toolchain_tree/bin/ -arch arm64 -miphoneos-version-min=7.0 %s -### 2>&1 | FileCheck --check-prefix=CHECK-NONE %s
|
|
// RUN: %clang -target x86_64-apple-darwin -ccc-install-dir %S/Inputs/darwin_toolchain_tree/bin/ -mmacosx-version-min=10.9 %s -### 2>&1 | FileCheck --check-prefix=CHECK-NONE %s
|
|
// RUN: %clang -target x86_64-apple-darwin -ccc-install-dir %S/Inputs/darwin_toolchain_tree/bin/ -arch armv7s -miphoneos-version-min=7.0 %s -### 2>&1 | FileCheck --check-prefix=CHECK-NONE %s
|
|
// RUN: %clang -target x86_64-apple-darwin -ccc-install-dir %S/Inputs/darwin_toolchain_tree/bin/ -arch armv7k %s -### 2>&1 | FileCheck --check-prefix=CHECK-NONE %s
|
|
// CHECK-NONE-NOT: "-stdlib="
|