python: Fix "make distcheck" error on version.py.

[sliver-openvswitch.git] / python / automake.mk

diff --git a/python/automake.mk b/python/automake.mk
index 9672042..447c08f 100644 (file)
--- a/python/automake.mk
+++ b/python/automake.mk
@@ -62,10 +62,10 @@ ovs-uninstall-local:
 
 ALL_LOCAL += $(srcdir)/python/ovs/version.py
 $(srcdir)/python/ovs/version.py: config.status
-       $(ro_shell) > $@.tmp
-       echo 'VERSION = "$(VERSION)"' >> $@.tmp
+       $(ro_shell) > $(@F).tmp
+       echo 'VERSION = "$(VERSION)"' >> $(@F).tmp
        if [ "$(BUILDNR)" != "0" ]; \
-           then echo 'BUILDNR = "+build$(BUILDNR)"' >> $@.tmp; \
-           else echo 'BUILDNR = ""' >> $@.tmp; \
-       fi;
-       mv $@.tmp $@
+           then echo 'BUILDNR = "+build$(BUILDNR)"' >> $(@F).tmp; \
+           else echo 'BUILDNR = ""' >> $(@F).tmp; \
+       fi
+       if cmp -s $(@F).tmp $@; then touch $@; rm $(@F).tmp; else mv $(@F).tmp $@; fi