Re: make-4.2.93 patch port to c90

[Paul Smith]

On Fri, 2020-01-03 at 23:30 -0500, Paul Smith wrote:
> On Fri, 2020-01-03 at 22:21 -0500, Dmitry Goncharov via Bug reports and
> discussion for GNU make wrote:
> > This patch replaced a c99 piece of code with c90 code.
> > This c99 piece of code does not compile with the default ./configure &&
> > make.
> > Also, -std=c99 removes __attribute__.
> 
> I already made some changes for this; it passes with -std=c90 -pedantic
> on my system now (with warnings, at least if you compile with guile,
> since guile headers don't support this mode).

I modified configure.ac to avoid Guile if it doesn't allow GNU make to
compile properly: it seems that the Guile headers require at least C99.