Add CMake check for libatomic.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217666 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evgeniy Stepanov 2014-09-12 11:08:59 +00:00
parent 8f3452d079
commit 6354451c6a
3 changed files with 8 additions and 3 deletions

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@ -2,6 +2,11 @@
INCLUDE(CheckCXXSourceCompiles)
check_library_exists(atomic __atomic_fetch_add_4 "" HAVE_LIBATOMIC)
if (HAVE_LIBATOMIC)
list(APPEND CMAKE_REQUIRED_LIBRARIES "atomic")
endif()
CHECK_CXX_SOURCE_COMPILES("
#ifdef _MSC_VER
#include <windows.h>

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@ -25,9 +25,6 @@ if(NOT LLVM_FORCE_USE_OLD_TOOLCHAIN)
set(OLD_CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS})
set(OLD_CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES})
set(CMAKE_REQUIRED_FLAGS "-std=c++0x")
if (ANDROID)
set(CMAKE_REQUIRED_LIBRARIES "atomic")
endif()
check_cxx_source_compiles("
#include <atomic>
std::atomic<float> x(0.0f);

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@ -132,6 +132,9 @@ if( NOT MSVC )
set(system_libs ${system_libs} ${TERMINFO_LIBS})
endif()
endif()
if( LLVM_ENABLE_THREADS AND HAVE_LIBATOMIC )
set(system_libs ${system_libs} atomic)
endif()
if( LLVM_ENABLE_THREADS AND HAVE_LIBPTHREAD )
set(system_libs ${system_libs} pthread)
endif()