autogen.sh: allow calling from out-of-tree

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com>
https://bugzilla.gnome.org/show_bug.cgi?id=692309

diff --git a/autogen.sh b/autogen.sh
index 768d123..7a8f1df 100755 (executable)
--- a/autogen.sh
+++ b/autogen.sh
@@ -1,10 +1,17 @@
 #!/bin/sh
 # Run this to generate all the initial makefiles, etc.
 
+test -n "$srcdir" || srcdir=`dirname "$0"`
+test -n "$srcdir" || srcdir=.
+
+olddir=`pwd`
+cd "$srcdir"
+
 DIE=0
 package=gst-plugins-good
 srcfile=gst/law/alaw.c
 
+echo "$(pwd)"
 # Make sure we have common
 if test ! -f common/gst-autogen.sh;
 then
@@ -109,13 +116,15 @@ test -n "$NOCONFIGURE" && {
   exit 0
 }
 
+cd "$olddir"
+
 echo "+ running configure ... "
-test ! -z "$CONFIGURE_DEF_OPT" && echo "  ./configure default flags: $CONFIGURE_DEF_OPT"
-test ! -z "$CONFIGURE_EXT_OPT" && echo "  ./configure external flags: $CONFIGURE_EXT_OPT"
-test ! -z "$CONFIGURE_FILE_OPT" && echo "  ./configure enable/disable flags: $CONFIGURE_FILE_OPT"
+test ! -z "$CONFIGURE_DEF_OPT" && echo "  $srcdir/configure default flags: $CONFIGURE_DEF_OPT"
+test ! -z "$CONFIGURE_EXT_OPT" && echo "  $srcdir/configure external flags: $CONFIGURE_EXT_OPT"
+test ! -z "$CONFIGURE_FILE_OPT" && echo "  $srcdir/configure enable/disable flags: $CONFIGURE_FILE_OPT"
 echo
 
-./configure $CONFIGURE_DEF_OPT $CONFIGURE_EXT_OPT $CONFIGURE_FILE_OPT || {
+"$srcdir/configure" $CONFIGURE_DEF_OPT $CONFIGURE_EXT_OPT $CONFIGURE_FILE_OPT || {
         echo "  configure failed"
         exit 1
 }