configure --help=recursive and subdir/configure.gnu

Hi,

I'm preparing a package with autoconf 2.57, but the little problem I'm reporting
here is also found in 2.59 .

My package contains subdirectories holding their own 3rd-party configure script
which are wrapped with a configure.gnu so as to e.g. preprocess command-line
arguments.  The problem I have is that calling  ./configure --help=recursive  in
the root directory does not pass --srcdir to the various configure.gnu in the
subdirectories, but only --help=recursive .  Therefore, in this particular case,
configure.gnu fails to find its configure when builddir != srcdir .

The patch is straightforward:

--- lib/autoconf/general.m4     2003-10-27 12:10:56.000000000 +0100
+++ new/autoconf/general.m4     2004-04-16 18:54:11.000000000 +0200
@@ -1004,7 +1004,7 @@
     # Check for guested configure; otherwise get Cygnus style configure.
     if test -f $ac_srcdir/configure.gnu; then
       echo
-      $SHELL $ac_srcdir/configure.gnu  --help=recursive
+      $SHELL $ac_srcdir/configure.gnu  --help=recursive --srcdir=$ac_srcdir
     elif test -f $ac_srcdir/configure; then
       echo
       $SHELL $ac_srcdir/configure  --help=recursive

Hopefully it should not harm to add it in 2.60.

- Nicolas