configure vs. build with different switches leads to breaks

configure vs. build with different switches leads to breaks

[Jay]

Guile failed to build for me, I forget what system, either Irix or OpenBSD, for
the following reason.

It goes and looks for some functions, like isnan or isnanf I think,
with autoconf:

compiles this program:

#include 
int main()
{
  do something with isnan
}

it compiles ok.

Later on it builds some similar code of its own, but this time with -Werror and
either -Wall or -Wmissing-prototypes. The function in question is not prototyped
in math.h, nor whatever else is #included.

I worked around by removing -Werror from the Makefile.

This seems like a general class of bug -- configure one way, build another.
(That sounds like a user error, but isn't, it is what is done automatically.)

Later on the build core dumps.
I haven't figured out why.

 - Jay

Re: configure vs. build with different switches leads to breaks

[Ludovic Courtès]

Hello Jay,

Sorry for the delay.

Jay <jay.krell@cornell.edu> writes:

> Guile failed to build for me, I forget what system, either Irix or OpenBSD, for
> the following reason.

Do you remember which OS it was?  It would be nice if you could post the
exact error messages, or at least give us the OS name and version so we
can try reproducing it.

Thanks,
Ludo'.