Add dependency to "make check".

cmake/modules/AddLLVM.cmake: Add empty "phony" target in add_llvm_loadable_module() even if loadable module were not supported.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121455 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/cmake/modules/AddLLVM.cmake b/cmake/modules/AddLLVM.cmake
index f45febb..d03b3e0 100755
--- a/cmake/modules/AddLLVM.cmake
+++ b/cmake/modules/AddLLVM.cmake
@@ -32,6 +32,8 @@
   if( NOT LLVM_ON_UNIX OR CYGWIN )
     message(STATUS "Loadable modules not supported on this platform.
 ${name} ignored.")
+    # Add empty "phony" target
+    add_custom_target(${name})
   else()
     llvm_process_sources( ALL_FILES ${ARGN} )
     add_library( ${name} MODULE ${ALL_FILES} )