[PATCH] [CMake] Fix NATIVE configuration in cross-compilation

[Akihiko Odaki via llvm-commits]

This unset CC, CXX and ASM, which are set for target, before calling
CMake to configure for NATIVE.
---
  cmake/modules/CrossCompile.cmake | 3 +++
  1 file changed, 3 insertions(+)

diff --git a/cmake/modules/CrossCompile.cmake 
b/cmake/modules/CrossCompile.cmake
index 9c598a6..a20c5caa 100644
--- a/cmake/modules/CrossCompile.cmake
+++ b/cmake/modules/CrossCompile.cmake
@@ -41,6 +41,9 @@ function(llvm_create_cross_target_internal target_name 
toolchain buildtype)
      if (buildtype)
        set(build_type_flags "-DCMAKE_BUILD_TYPE=${buildtype}")
      endif()
+    unset(ENV{CC})
+    unset(ENV{CXX})
+    unset(ENV{ASM})
      execute_process(COMMAND ${CMAKE_COMMAND} ${build_type_flags}
          -G "${CMAKE_GENERATOR}" 
-DLLVM_TARGETS_TO_BUILD=${LLVM_TARGETS_TO_BUILD}
          ${CROSS_TOOLCHAIN_FLAGS_${target_name}} ${CMAKE_SOURCE_DIR}
-- 
2.9.3