commit 41bf0bc71a1dd3d5a6c0cb8d1eae2ab36790b6c4
author Alexey Samsonov <samsonov@google.com> Thu Feb 27 07:22:59 2014 +0000
committer Alexey Samsonov <samsonov@google.com> Thu Feb 27 07:22:59 2014 +0000
tree 80d0496fcb406d906c7bddb682a7454c618e7855
parent f0aa38d58a8fe34f444d04a2eb67569f47259364

[CMake] Make sure add_compiler_rt_resource_file doesn't do unnecessary work

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@202356 91177308-0d34-0410-b5e6-96231b3b80d8

cmake/Modules/AddCompilerRT.cmake

diff --git a/cmake/Modules/AddCompilerRT.cmake b/cmake/Modules/AddCompilerRT.cmake
index 357e0a5..743ca96 100644
--- a/cmake/Modules/AddCompilerRT.cmake
+++ b/cmake/Modules/AddCompilerRT.cmake
@@ -138,9 +138,11 @@
 macro(add_compiler_rt_resource_file target_name file_name)
   set(src_file "${CMAKE_CURRENT_SOURCE_DIR}/${file_name}")
   set(dst_file "${COMPILER_RT_OUTPUT_DIR}/${file_name}")
-  add_custom_target(${target_name}
+  add_custom_command(OUTPUT ${dst_file}
+    DEPENDS ${src_file}
     COMMAND ${CMAKE_COMMAND} -E copy_if_different ${src_file} ${dst_file}
-    DEPENDS ${file_name})
+    COMMENT "Copying ${file_name}...")
+  add_custom_target(${target_name} DEPENDS ${dst_file})
   # Install in Clang resource directory.
   install(FILES ${file_name} DESTINATION ${COMPILER_RT_INSTALL_PATH})
 endmacro()