Recovers m4 dir.

$ ./autogen.sh 
...

Running intltoolize --automake --copy --force
cp: cannot create regular file ‘m4/intltool.m4’: No such file or directory
intltoolize: cannot copy '/usr/share/aclocal/intltool.m4' to 'm4/intltool.m4'


---
 autogen.sh | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/autogen.sh b/autogen.sh
index ba1a279..2e1f5e5 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -13,6 +13,8 @@ EOF
   exit 1
 }
 
+test -d m4 || mkdir m4
+
 # portability for awk
 awk_tests="gawk mawk nawk awk"
 if test -z "$AWK"; then
-- 
2.1.0