more portable use of sed -i

Apparently OS X requires the extension be specified. But this
turns on backup in GNU sed, so have to remove that.

diff --git a/Makefile.PL b/Makefile.PL
index 4740988149a15350bd88732955c34874a361b7fe..462f7364d57ce1c465db2b9ff0c2368a1279b3c2 100755 (executable)
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -44,7 +44,8 @@ extra_build: ikiwiki.out ikiwiki.setup docwiki
        ./mdwn2man ikiwiki-update-wikilist 1 doc/ikiwiki-update-wikilist.mdwn > ikiwiki-update-wikilist.man
        ./mdwn2man ikiwiki-calendar 1 doc/ikiwiki-calendar.mdwn > ikiwiki-calendar.man
        $(MAKE) -C po
        ./mdwn2man ikiwiki-update-wikilist 1 doc/ikiwiki-update-wikilist.mdwn > ikiwiki-update-wikilist.man
        ./mdwn2man ikiwiki-calendar 1 doc/ikiwiki-calendar.mdwn > ikiwiki-calendar.man
        $(MAKE) -C po

-       sed -i "s/Version:.*/Version: $$(perl -e '$$_=<>;print m/\((.*?)\)/'<debian/changelog)/" ikiwiki.spec
+       sed -i.bkp "s/Version:.*/Version: $$(perl -e '$$_=<>;print m/\((.*?)\)/'<debian/changelog)/" ikiwiki.spec
+       rm -f ikiwiki.spec.bkp

        
 docwiki: ikiwiki.out
        $(PERL) -Iblib/lib $(extramodules) $(tflag) ikiwiki.out -libdir . -setup docwiki.setup -refresh
        
 docwiki: ikiwiki.out
        $(PERL) -Iblib/lib $(extramodules) $(tflag) ikiwiki.out -libdir . -setup docwiki.setup -refresh