[CMake] Passthrough CFLAGS when checking the compiler-rt path
This is needed when cross-compiling for a different target since
CFLAGS may contain additional flags like -resource-dir which
change the location in which compiler-rt builtins are found.
Differential Revision: https://reviews.llvm.org/D54371
git-svn-id: https://llvm.org/svn/llvm-project/libunwind/trunk@346820 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/cmake/Modules/HandleCompilerRT.cmake b/cmake/Modules/HandleCompilerRT.cmake
index 275243a..77168e5 100644
--- a/cmake/Modules/HandleCompilerRT.cmake
+++ b/cmake/Modules/HandleCompilerRT.cmake
@@ -8,6 +8,9 @@
if (CMAKE_CXX_COMPILER_ID MATCHES Clang AND CMAKE_CXX_COMPILER_TARGET)
list(APPEND CLANG_COMMAND "--target=${CMAKE_CXX_COMPILER_TARGET}")
endif()
+ get_property(LIBUNWIND_CXX_FLAGS CACHE CMAKE_CXX_FLAGS PROPERTY VALUE)
+ string(REPLACE " " ";" LIBUNWIND_CXX_FLAGS "${LIBUNWIND_CXX_FLAGS}")
+ list(APPEND CLANG_COMMAND ${LIBUNWIND_CXX_FLAGS})
execute_process(
COMMAND ${CLANG_COMMAND}
RESULT_VARIABLE HAD_ERROR
