Make temporary backup have .bak extension

diff --git a/bootstrap.sh b/bootstrap.sh
index f326b5891267a6bb3d708495d309a9b77622e3f3..bbffbbb443151ace6ecb031569040e8dd4c9f140 100755 (executable)
--- a/bootstrap.sh
+++ b/bootstrap.sh
@@ -62,7 +62,7 @@ acver=`find_version autoconf ${acversions}`
 bootstrap aclocal$amver
 #workaround for Automake 1.5
 if grep m4_regex aclocal.m4 >/dev/null; then
-    perl -ibak -p -e 's/m4_patsubst/m4_bpatsubst/g; s/m4_regexp/m4_bregexp/g;' aclocal.m4
+    perl -i.bak -p -e 's/m4_patsubst/m4_bpatsubst/g; s/m4_regexp/m4_bregexp/g;' aclocal.m4
 fi
 bootstrap autoheader$acver
 bootstrap automake$amver --foreign --add-missing