fix 'make clean': shell glob, ignore failure
Unfortunately a glob like osmo-x__*.{svg,png} doesn't work, so have the
suffixes in separate globs.
Add dashes to indicate that failure should be ignored.
Change-Id: I6bc4d9ea72b43a573acbc860c23397f748de2c7b
diff --git a/doc/manuals/Makefile b/doc/manuals/Makefile
index 1f06183..a83b909 100644
--- a/doc/manuals/Makefile
+++ b/doc/manuals/Makefile
@@ -23,9 +23,11 @@
osmopcu-usermanual.pdf: chapters/*.adoc
clean:
- rm -rf $(cleanfiles)
- rm -rf gen-vty-docbook
- rm -rf osmopcu-usermanual__*.{svg,png,check}
+ -rm -rf $(cleanfiles)
+ -rm -rf gen-vty-docbook
+ -rm osmopcu-usermanual__*.png
+ -rm osmopcu-usermanual__*.svg
+ -rm osmopcu-usermanual.check
gen-vty-docbook: FORCE
$(call command,xsltproc -o generated/combined1.xml \