CMake: Use LLVM_COMMON_DEPENDS on add_llvm_executable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78990 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/cmake/modules/AddLLVM.cmake b/cmake/modules/AddLLVM.cmake
index ded77be..0d263f8 100755
--- a/cmake/modules/AddLLVM.cmake
+++ b/cmake/modules/AddLLVM.cmake
@@ -30,6 +30,9 @@
   if( llvm_system_libs )
     target_link_libraries(${name} ${llvm_system_libs})
   endif()
+  if( LLVM_COMMON_DEPENDS )
+    add_dependencies( ${name} ${LLVM_COMMON_DEPENDS} )
+  endif( LLVM_COMMON_DEPENDS )
 endmacro(add_llvm_executable name)