Re: [bug-gnulib] VPATH and IRIX make (was: m4-1.4.6 soon?)

[Eric Blake]

> 
> You're attempting a VPATH build with a non-GNU make. This is not supported.

I thought it was not recommended, because of the bugs that other makes
have with VPATH, but saying that it is not supported when a trivial fix might
make it work is a bit harsh.  Maybe a better way to word it is that we don't
always go out of our way to ensure VPATH builds work with non-GNU makes,
as it is not necessarily a primary design goal.  However, VPATH builds of m4
certainly work with at least Solaris make.  If we can determine an easy
workaround for the IRIX make bug tickled here, and document it properly
in the autoconf manual, I think it would be wiser for gnulib to support this
particular usage. That said, I will not hold up the m4 1.4.6 release waiting
for a workaround.

-- 
Eric Blake