Re: ensure a VPATH build

[Julien Lecomte]

On 18/02/2006 11:26, Keith Marshall wrote:
> On Friday 17 February 2006 1:12 pm, Ralf Wildenhues wrote:
> > `pwd' may not support `-W' either.
>
> `pwd -W' is an MSYS extension, (it displays the native MS-Windows path, 
> rather than the POSIX style favoured by MSYS).  Some shells will simply 
> ignore it, (e.g. `sh' on SunOS-5); others treat it as an error, (e.g. 
> `bash' other than in MSYS, Cygwin's `ash').

True, pwd may not support -W, but in the autoconf script itself it does 
a check to see if it's handled (same for 'cygpath' which is used if on 
Cygwin, see macro) Unless the following is buggy (with $1 equal to 'pwd 
-W' for example):
if ( ($1) || exit) >/dev/null 2>&1 && \
  ( (cd $srcdir && $1) || exit) >/dev/null 2>&1; then

Note: the '|| exit' may seem like overkill, but I copied those two lines 
from another autoconf macro. This may be to avoid a long lost documented 
shell bug.

Julien