Re: [PATCH] fortran: use fpu-glibc on powerpc*-unknown-freebsd

[Piotr Kubaj <pkubaj@anongoth.pl>]

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On 22-03-20 16:30:08, FX wrote:
> Hi,
> 
> (Please send all Fortran (front-end and libgfortran) patches in CC to the Fortran list.)
> 
> Please hold from pushing the patch as is, I have some questions:
> 
> - If FreeBSD has feenableexcept() and related functions, it should already use the fpu-glibc code, because of this:
> 
> if test "x${have_feenableexcept}" = "xyes"; then
>   fpu_host='fpu-glibc'
>   ieee_support='yes'
> fi
> 
> So before the patch, what was configure.host returning, and what is the value of have_feenableexcept?
> 
> - Why restrict the patch to powerpc*? Don’t other FreeBSD targets have that function?
> - How does the patch affect the results of “make check-gfortran”?
> 
> 
> Thanks,
> FX

Hello,

the problem is that configure checks for feenableexcept() in libm:
AC_CHECK_LIB([m],[feenableexcept],[have_feenableexcept=yes AC_DEFINE([HAVE_FEENABLEEXCEPT],[1],[libm includes feenableexcept])])

FreeBSD doesn't have this function in libm, it's implemented in /usr/include/fenv.h.

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