build/make: Ensure make clean removes the LLVMBuild makefile fragment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149643 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/Makefile.rules b/Makefile.rules
index 2d80c43dc86af3d66f9ad67f28fbf8021806a634..32a97c646c717dbbc3b350cf690f7baeb1c8415e 100644 (file)
--- a/Makefile.rules
+++ b/Makefile.rules
@@ -116,6 +116,10 @@ $(LLVMConfigLibraryDependenciesInc): $(LLVMBuildMakeFrag)
 # building from a subdirectory, but that is always somewhat unreliable.
 ifeq ($(LEVEL),.)
 LLVMBUILD_INCLUDE_DEPENDENCIES := 1
+
+# Clean the generated makefile fragment at the top-level.
+clean-local::
+       -$(Verb) $(RM) -f $(LLVMBuildMakeFrag)
 endif
 -include $(LLVMBuildMakeFrag)