diff options
Diffstat (limited to 'cmake/modules/HandleLLVMOptions.cmake')
| -rw-r--r-- | cmake/modules/HandleLLVMOptions.cmake | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/cmake/modules/HandleLLVMOptions.cmake b/cmake/modules/HandleLLVMOptions.cmake index cb7da42658..6c99682f76 100644 --- a/cmake/modules/HandleLLVMOptions.cmake +++ b/cmake/modules/HandleLLVMOptions.cmake @@ -29,6 +29,8 @@ if(NOT LLVM_FORCE_USE_OLD_TOOLCHAIN) # version of libstdc++ directly. Instead we test for a known bug in # libstdc++4.6 that is fixed in libstdc++4.7. if(NOT LLVM_ENABLE_LIBCXX) + 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") @@ -41,6 +43,8 @@ int main() { return (float)x; }" if(NOT LLVM_NO_OLD_LIBSTDCXX) message(FATAL_ERROR "Host Clang must be able to find libstdc++4.7 or newer!") endif() + set(CMAKE_REQUIRED_FLAGS ${OLD_CMAKE_REQUIRED_FLAGS}) + set(CMAKE_REQUIRED_LIBRARIES ${OLD_CMAKE_REQUIRED_LIBRARIES}) endif() elseif(CMAKE_CXX_COMPILER_ID MATCHES "MSVC") if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 17.0) |