Do not try to descend into optional build directories if they do not

exist.  This makes the build logic symmetric for both the in tree and
out of tree cases.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126070 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/Makefile.rules b/Makefile.rules
index eab886190cce6deb3a9cf9fe571fb7ea4dd37037..363fa9605b5a8c253c8ffff93008ec4a2967bdfd 100644 (file)
--- a/Makefile.rules
+++ b/Makefile.rules
@@ -840,7 +840,9 @@ $(RecursiveTargets)::
 else
 $(RecursiveTargets)::
        $(Verb) for dir in $(OPTIONAL_DIRS); do \
-         ($(MAKE) -C$$dir $@ ) || exit 1; \
+         if [ -d $(PROJ_SRC_DIR)/$$dir ]; then\
+           ($(MAKE) -C$$dir $@ ) || exit 1; \
+         fi \
        done
 endif
 endif