Allow to build outside the source directory

This is based on a patch by
Marco Pesenti Gritti <marco@marcopg.org>,
with reviewer comments addressed.

Reviewed-by: James Cameron <quozl@laptop.org>
Acked-by: Simon Schampijer <simon@schampijer.de>

1 files changed, 10 insertions, 1 deletions

diff --git a/autogen.sh b/autogen.sh
index a71e202..bac5247 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -1,4 +1,13 @@
 #!/bin/sh
+
+test -n "${srcdir}" || srcdir=`dirname "$0"`
+test -n "${srcdir}" || srcdir="$(pwd)"
+
+olddir="$(pwd)"
+cd "$srcdir"
+
 intltoolize
 autoreconf -i
-./configure --enable-maintainer-mode "$@"
+
+cd "$olddir"
+"$srcdir/configure" --enable-maintainer-mode "$@"