[beast/temp-rc1] BUILD: fix GLIB_GNU_GETTEXT to cope without po/POTFILES.in

[Tim Janik <timj src gnome org>]

commit e12fe7b451d14d6cae2bde38086c35499c1e715b
Author: Tim Janik <timj gnu org>
Date:   Fri Oct 17 06:06:13 2014 +0200

    BUILD: fix GLIB_GNU_GETTEXT to cope without po/POTFILES.in

 autotools/glib-gettext.m4 |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/autotools/glib-gettext.m4 b/autotools/glib-gettext.m4
index 68b08b3..981ba77 100644
--- a/autotools/glib-gettext.m4
+++ b/autotools/glib-gettext.m4
@@ -378,7 +378,8 @@ glib_DEFUN([GLIB_GNU_GETTEXT],
      posrcprefix="../"
    fi
    rm -f po/POTFILES
-   sed -e "/^#/d" -e "/^\$/d" -e "s,.*,        $posrcprefix& \\\\," -e "\$s/\(.*\) \\\\/\1/" \
+   test -e $srcdir/po/POTFILES.in && \
+     sed -e "/^#/d" -e "/^\$/d" -e "s,.*,      $posrcprefix& \\\\," -e "\$s/\(.*\) \\\\/\1/" \
        < $srcdir/po/POTFILES.in > po/POTFILES
   ])