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Add predefined macro __gnu_linux__ for proper aux-triple 

Clang predefine macro __linx__ for aux-triple with Linux OS
but does not predefine macro __gnu_linux__. This causes
some compilation error for certain applications, e.g. Eigen.

This patch fixes that.

Differential Revision: https://reviews.llvm.org/D51441

llvm-svn: 340967
This commit is contained in:
Yaxun Liu 2018-08-29 20:39:22 +00:00
parent 77c57200f8
commit 0e9a76dbe3
2 changed files with 4 additions and 1 deletions
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1
clang/lib/Frontend/InitPreprocessor.cpp
View File

@ -1128,6 +1128,7 @@ static void InitializePredefinedAuxMacros(const TargetInfo &AuxTI,
if (AuxTriple.getOS() == llvm::Triple::Linux) {
Builder.defineMacro("__ELF__");
Builder.defineMacro("__linux__");
Builder.defineMacro("__gnu_linux__");
// Used in features.h. If this is omitted, math.h doesn't declare float
// versions of the functions in bits/mathcalls.h.
if (LangOpts.CPlusPlus)

4
clang/test/Preprocessor/predefined-macros.c
View File

@ -183,9 +183,11 @@
// CHECK-HIP: #define __HIP__ 1
// RUN: %clang_cc1 %s -E -dM -o - -x hip -triple amdgcn-amd-amdhsa \
// RUN: -fcuda-is-device \
// RUN: -aux-triple x86_64-unknown-linux -fcuda-is-device \
// RUN: | FileCheck -match-full-lines %s --check-prefix=CHECK-HIP-DEV
// CHECK-HIP-DEV-NOT: #define __CUDA_ARCH__
// CHECK-HIP-DEV: #define __HIPCC__ 1
// CHECK-HIP-DEV: #define __HIP_DEVICE_COMPILE__ 1
// CHECK-HIP-DEV: #define __HIP__ 1
// CHECK_HIP-DEV: #define __linux__ 1
// CHECK_HIP-DEV: #define __gnu_linux__ 1