autogen.sh: Support running from outside the source directory

joshtriplett · joshtriplett · commit 19b9adda520d · 2013-11-27T17:25:58.000-08:00
Initial steps towards supporting out-of-tree builds.
diff --git a/autogen.sh b/autogen.sh
@@ -1,3 +1,5 @@
 #!/bin/sh
 set -e
+srcdir="$(dirname $0)"
+cd "$srcdir"
 autoreconf -vif
