[compiler-rt] r277419 - [CMake] Pass -nostdlib if supported

[Jonas Hahnfeld via llvm-commits]

Author: hahnfeld
Date: Tue Aug  2 00:51:09 2016
New Revision: 277419

URL: http://llvm.org/viewvc/llvm-project?rev=277419&view=rev
Log:
[CMake] Pass -nostdlib if supported

The sanitizers use C++ but don't require linking with the library.

Differential Revision: https://reviews.llvm.org/D23005

Modified:
    compiler-rt/trunk/CMakeLists.txt
    compiler-rt/trunk/cmake/config-ix.cmake

Modified: compiler-rt/trunk/CMakeLists.txt
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/CMakeLists.txt?rev=277419&r1=277418&r2=277419&view=diff
==============================================================================
--- compiler-rt/trunk/CMakeLists.txt (original)
+++ compiler-rt/trunk/CMakeLists.txt Tue Aug  2 00:51:09 2016
@@ -111,6 +111,8 @@ if(COMPILER_RT_ENABLE_WERROR)
 endif()
 
 append_string_if(COMPILER_RT_HAS_STD_CXX11_FLAG -std=c++11 CMAKE_CXX_FLAGS)
+# we don't need to link with the C++ library
+append_string_if(COMPILER_RT_HAS_NOSTDLIB_FLAG -nostdlib CMAKE_CXX_FLAGS)
 
 # Emulate C99 and C++11's __func__ for MSVC prior to 2013 CTP.
 if(NOT COMPILER_RT_HAS_FUNC_SYMBOL)

Modified: compiler-rt/trunk/cmake/config-ix.cmake
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/cmake/config-ix.cmake?rev=277419&r1=277418&r2=277419&view=diff
==============================================================================
--- compiler-rt/trunk/cmake/config-ix.cmake (original)
+++ compiler-rt/trunk/cmake/config-ix.cmake Tue Aug  2 00:51:09 2016
@@ -26,6 +26,7 @@ check_cxx_compiler_flag(-fno-rtti
 check_cxx_compiler_flag(-ffreestanding       COMPILER_RT_HAS_FFREESTANDING_FLAG)
 check_cxx_compiler_flag("-Werror -fno-function-sections" COMPILER_RT_HAS_FNO_FUNCTION_SECTIONS_FLAG)
 check_cxx_compiler_flag(-std=c++11           COMPILER_RT_HAS_STD_CXX11_FLAG)
+check_cxx_compiler_flag(-nostdlib            COMPILER_RT_HAS_NOSTDLIB_FLAG)
 check_cxx_compiler_flag(-ftls-model=initial-exec COMPILER_RT_HAS_FTLS_MODEL_INITIAL_EXEC)
 check_cxx_compiler_flag(-fno-lto             COMPILER_RT_HAS_FNO_LTO_FLAG)
 check_cxx_compiler_flag("-Werror -msse3" COMPILER_RT_HAS_MSSE3_FLAG)