What does PWD = $${PWDCMD-pwd} do in make?

[Rainer Orth]

"Zack Weinberg" <zack@codesourcery.com> writes:

> I don't think there's any reason why we couldn't change this to read
> 
> PWDCMD = $${PWDCMD-pwd}
> 
> and change all uses of ${PWD} to ${PWDCMD}.  Anyone know different?

See the patch submission

	http://gcc.gnu.org/ml/gcc-patches/2002-05/msg01293.html

and the comments in both toplevel and gcc Makefile.in.

	Rainer

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Rainer Orth, Faculty of Technology, Bielefeld University