Author: Manoj Gupta Date: 2022-11-03T13:58:47-07:00 New Revision: 2497d5aa7716a664c4f73df1980b026c906c7522
URL: https://github.com/llvm/llvm-project/commit/2497d5aa7716a664c4f73df1980b026c906c7522 DIFF: https://github.com/llvm/llvm-project/commit/2497d5aa7716a664c4f73df1980b026c906c7522.diff LOG: Define _GNU_SOURCE for arm baremetal in C++ mode. This matches other C++ drivers e.g. Linux that define _GNU_SOURCE. This lets clang compiler more code by default without explicitly passing _GNU_SOURCE on command line. Reviewed By: MaskRay Differential Revision: https://reviews.llvm.org/D136712 Added: Modified: clang/lib/Basic/Targets/ARM.cpp clang/test/Preprocessor/init-arm.c Removed: ################################################################################ diff --git a/clang/lib/Basic/Targets/ARM.cpp b/clang/lib/Basic/Targets/ARM.cpp index f2db186aac4cb..c38849058e13d 100644 --- a/clang/lib/Basic/Targets/ARM.cpp +++ b/clang/lib/Basic/Targets/ARM.cpp @@ -705,8 +705,11 @@ void ARMTargetInfo::getTargetDefines(const LangOptions &Opts, // For bare-metal none-eabi. if (getTriple().getOS() == llvm::Triple::UnknownOS && (getTriple().getEnvironment() == llvm::Triple::EABI || - getTriple().getEnvironment() == llvm::Triple::EABIHF)) + getTriple().getEnvironment() == llvm::Triple::EABIHF)) { Builder.defineMacro("__ELF__"); + if (Opts.CPlusPlus) + Builder.defineMacro("_GNU_SOURCE"); + } // Target properties. Builder.defineMacro("__REGISTER_PREFIX__", ""); diff --git a/clang/test/Preprocessor/init-arm.c b/clang/test/Preprocessor/init-arm.c index e317ffa67393d..a55d0d63a79b3 100644 --- a/clang/test/Preprocessor/init-arm.c +++ b/clang/test/Preprocessor/init-arm.c @@ -1450,3 +1450,8 @@ // THUMB-MINGW:#define __ARM_DWARF_EH__ 1 +// RUN: %clang_cc1 -E -dM -ffreestanding -triple=thumbv6m-none-unknown-eabi < /dev/null | FileCheck -match-full-lines -check-prefix Thumbv6m-elf %s +// Thumbv6m-elf: #define __ELF__ 1 + +// RUN: %clang_cc1 -x c++ -E -dM -ffreestanding -triple=thumbv6m-none-unknown-eabi < /dev/null | FileCheck -match-full-lines -check-prefix Thumbv6m-cxx %s +// Thumbv6m-cxx: #define _GNU_SOURCE 1 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits