[gtk-doc-stub] gtkdocize.in: ensure that m4 directory exists

[Colin Walters <walters src gnome org>]

commit 1dea266593edb766d6d898c79451ef193eb17cfa
Author: Andreas Müller <schnitzeltony googlemail com>
Date:   Tue Sep 30 14:12:22 2014 +0200

    gtkdocize.in: ensure that m4 directory exists
    
    Some packages set AC_CONFIG_MACRO_DIR without shipping macros. These end up in errors
    like
    
    | ln: target 'm4/' is not a directory: No such file or directory
    | cp: cannot create regular file 'm4/': Not a directory
    
    Note: This error does not occure e.g when libtoolize is run before because it
    creates macro directory.
    
    Signed-off-by: Andreas Müller <schnitzeltony googlemail com>

 gtkdocize.in |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/gtkdocize.in b/gtkdocize.in
index 93d4acc..b33fa31 100644
--- a/gtkdocize.in
+++ b/gtkdocize.in
@@ -102,6 +102,7 @@ fi
 # the correct flags must be passed to aclocal for it to find the macro.
 m4dir=`cat "$configure" | grep '^AC_CONFIG_MACRO_DIR' | sed -n -e 's/AC_CONFIG_MACRO_DIR(\([^()]*\))/\1/p' | 
sed -e 's/^\[\(.*\)\]$/\1/' | sed -e 1q`
 if test -n "$m4dir"; then
+  mkdir -p $m4dir
   rm -f $m4dir/gtk-doc.m4
   if test "$copy" = yes; then
     cp -f $datadir/aclocal/gtk-doc.m4 $m4dir/ ||