Fix "make distclean" when Ruby is not in use

git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@719379 13f79535-47bb-0310-9956-ffa450edef68

diff --git a/lib/rb/Makefile.am b/lib/rb/Makefile.am
index 43acfff..07fc5c6 100644 (file)
--- a/lib/rb/Makefile.am
+++ b/lib/rb/Makefile.am
@@ -7,7 +7,9 @@ all-local:
 install-exec-hook:
        $(RUBY) setup.rb install
 
+# Make sure this doesn't fail if Ruby is not configured.
 clean-local:
-       $(RUBY) setup.rb clean
+       RUBY=$(RUBY) ; if test -z "$$RUBY" ; then RUBY=: ; fi ; \
+       $$RUBY setup.rb clean
 
 check-local: all