[cmake] Pass LLVM_USE_LINKER flag when building host tools, e.g.,

LLVM_OPTIMIZED_TABLEGEN=ON, and not crosscompiling.

Differential Revision: https://reviews.llvm.org/D39734

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@319228 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/cmake/modules/CrossCompile.cmake b/cmake/modules/CrossCompile.cmake
index 8f9e613..4cd0197 100644 (file)
--- a/cmake/modules/CrossCompile.cmake
+++ b/cmake/modules/CrossCompile.cmake
@@ -15,6 +15,9 @@ function(llvm_create_cross_target_internal target_name toolchain buildtype)
   if (buildtype)
     set(build_type_flags "-DCMAKE_BUILD_TYPE=${buildtype}")
   endif()
+  if (LLVM_USE_LINKER AND NOT CMAKE_CROSSCOMPILING)
+    set(linker_flag "-DLLVM_USE_LINKER=${LLVM_USE_LINKER}")
+  endif()
   if (LLVM_EXTERNAL_CLANG_SOURCE_DIR)
     # Propagate LLVM_EXTERNAL_CLANG_SOURCE_DIR so that clang-tblgen can be built
     set(external_clang_dir "-DLLVM_EXTERNAL_CLANG_SOURCE_DIR=${LLVM_EXTERNAL_CLANG_SOURCE_DIR}")
@@ -32,7 +35,7 @@ function(llvm_create_cross_target_internal target_name toolchain buildtype)
         ${CROSS_TOOLCHAIN_FLAGS_${target_name}} ${CMAKE_SOURCE_DIR}
         -DLLVM_TARGET_IS_CROSSCOMPILE_HOST=TRUE
         -DLLVM_TARGETS_TO_BUILD=${LLVM_TARGETS_TO_BUILD}
-        ${build_type_flags} ${external_clang_dir}
+        ${build_type_flags} ${linker_flag} ${external_clang_dir}
     WORKING_DIRECTORY ${LLVM_${target_name}_BUILD}
     DEPENDS CREATE_LLVM_${target_name}
     COMMENT "Configuring ${target_name} LLVM...")