[PATCH] D136712: Define _GNU_SOURCE for arm baremetal in C++ mode.

[Manoj Gupta via Phabricator via cfe-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rG2497d5aa7716: Define _GNU_SOURCE for arm baremetal in C++ 
mode. (authored by manojgupta).

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D136712/new/

https://reviews.llvm.org/D136712

Files:
  clang/lib/Basic/Targets/ARM.cpp
  clang/test/Preprocessor/init-arm.c


Index: clang/test/Preprocessor/init-arm.c
===================================================================
--- clang/test/Preprocessor/init-arm.c
+++ 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
Index: clang/lib/Basic/Targets/ARM.cpp
===================================================================
--- clang/lib/Basic/Targets/ARM.cpp
+++ clang/lib/Basic/Targets/ARM.cpp
@@ -705,8 +705,11 @@
   // 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__", "");



Index: clang/test/Preprocessor/init-arm.c
===================================================================
--- clang/test/Preprocessor/init-arm.c
+++ 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
Index: clang/lib/Basic/Targets/ARM.cpp
===================================================================
--- clang/lib/Basic/Targets/ARM.cpp
+++ clang/lib/Basic/Targets/ARM.cpp
@@ -705,8 +705,11 @@
   // 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__", "");

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