tags 36338 + notabug wontfix
close 36338
thanks
Hi Cyprien,
Cyprien Nicolas <cypr...@nicolas.tf> writes:
> I apologize if the issue was already reported, but I didn't find a
> previous record.
>
> At Gentoo, users build packages themselves, and have the freedom to
> choose the CFLAGS they want.
>
> We had several reports [1,2] from users unable to build guile with
> -Ofast. Adding -fno-fast-math make the build pass.
>
> Compiling with -O0 -ffast-math also fails.
Guile generally assumes that the underlying C implementation will be
standards compliant. -Ofast, -ffast-math and related options disregard
standards compliance. Among other things, -ffast-math implies
-ffinite-math-only, which generates code that assumes that all floating
point values are finite. However, there's code in Guile's compiler that
uses +inf.0 and -inf.0 and expects that they will behave as specified in
IEEE-754.
So, in summary, I would say that Guile does not support being compiled
with -Ofast, -ffast-math, or many of the options that -ffast-math
implies.
> I'm not sure if you can solve this. On our side, we will append
> -fno-fast-math to compiler's flags.
I think this is the right approach.
Thanks,
Mark
