[PATCH] Add the option to build/test compiler-rt as a standalone project with just-built Clang.

[Brad King]

================
Comment at: runtime/CMakeLists.txt:33
@@ +32,3 @@
+    )
+  # Due to a bug, DEPENDS in ExternalProject_Add doesn't work in some CMake versions.
+  add_dependencies(compiler-rt llvm-config clang clang++)
----------------
This should mention the versions of CMake, 2.8.9 and 2.8.10, so that when the minimum required version is high enough in the future one may be reminded to update the code to use the DEPENDS option.


================
Comment at: runtime/CMakeLists.txt:52
@@ +51,3 @@
+  add_custom_target(check-compiler-rt
+          COMMAND ${CMAKE_BUILD_TOOL} check-all
+          DEPENDS compiler-rt
----------------
This can use the command

%%% 
 ${CMAKE_COMMAND} --build . --target check-all --config $<CONFIGURATION>
%%%

to abstract the command-line details of the native build tool.



http://llvm-reviews.chandlerc.com/D2868