[CMake] Passthrough CFLAGS when checking the compiler-rt path

petrhosek · petrhosek · commit 2d2e23e89b83 · 2018-11-14T00:09:26.000Z
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 llvm-svn: 346820
diff --git a/compiler-rt/cmake/Modules/HandleCompilerRT.cmake b/compiler-rt/cmake/Modules/HandleCompilerRT.cmake
@@ -4,6 +4,9 @@ function(find_compiler_rt_library name variable)
   if (CMAKE_CXX_COMPILER_ID MATCHES Clang AND CMAKE_CXX_COMPILER_TARGET)
     list(APPEND CLANG_COMMAND "--target=${CMAKE_CXX_COMPILER_TARGET}")
   endif()
+  get_property(SANITIZER_CXX_FLAGS CACHE CMAKE_CXX_FLAGS PROPERTY VALUE)
+  string(REPLACE " " ";" SANITIZER_CXX_FLAGS "${SANITIZER_CXX_FLAGS}")
+  list(APPEND CLANG_COMMAND ${SANITIZER_CXX_FLAGS})
   execute_process(
       COMMAND ${CLANG_COMMAND}
       RESULT_VARIABLE HAD_ERROR
diff --git a/libcxx/cmake/Modules/HandleCompilerRT.cmake b/libcxx/cmake/Modules/HandleCompilerRT.cmake
@@ -8,6 +8,9 @@ function(find_compiler_rt_library name dest)
   if (CMAKE_CXX_COMPILER_ID MATCHES Clang AND CMAKE_CXX_COMPILER_TARGET)
     list(APPEND CLANG_COMMAND "--target=${CMAKE_CXX_COMPILER_TARGET}")
   endif()
+  get_property(LIBCXX_CXX_FLAGS CACHE CMAKE_CXX_FLAGS PROPERTY VALUE)
+  string(REPLACE " " ";" LIBCXX_CXX_FLAGS "${LIBCXX_CXX_FLAGS}")
+  list(APPEND CLANG_COMMAND ${LIBCXX_CXX_FLAGS})
   execute_process(
       COMMAND ${CLANG_COMMAND}
       RESULT_VARIABLE HAD_ERROR
diff --git a/libcxxabi/cmake/Modules/HandleCompilerRT.cmake b/libcxxabi/cmake/Modules/HandleCompilerRT.cmake
@@ -8,6 +8,9 @@ function(find_compiler_rt_library name dest)
   if (CMAKE_CXX_COMPILER_ID MATCHES Clang AND CMAKE_CXX_COMPILER_TARGET)
     list(APPEND CLANG_COMMAND "--target=${CMAKE_CXX_COMPILER_TARGET}")
   endif()
+  get_property(LIBCXXABI_CXX_FLAGS CACHE CMAKE_CXX_FLAGS PROPERTY VALUE)
+  string(REPLACE " " ";" LIBCXXABI_CXX_FLAGS "${LIBCXXABI_CXX_FLAGS}")
+  list(APPEND CLANG_COMMAND ${LIBCXXABI_CXX_FLAGS})
   execute_process(
       COMMAND ${CLANG_COMMAND}
       RESULT_VARIABLE HAD_ERROR
diff --git a/libunwind/cmake/Modules/HandleCompilerRT.cmake b/libunwind/cmake/Modules/HandleCompilerRT.cmake
@@ -8,6 +8,9 @@ function(find_compiler_rt_library name dest)
   if (CMAKE_CXX_COMPILER_ID MATCHES Clang AND CMAKE_CXX_COMPILER_TARGET)
     list(APPEND CLANG_COMMAND "--target=${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
