Here are gmake check-gfortran results requested by FX.

Before patching:
                === gfortran Summary ===

# of expected passes            65106
# of unexpected failures        6
# of expected failures          262
# of unsupported tests          367

After patching:
                === gfortran Summary ===

# of expected passes            65384
# of unexpected failures        6
# of expected failures          262
# of unsupported tests          373

In both cases, unexpected failures are:
FAIL: gfortran.dg/pr98076.f90   -O0  execution test
FAIL: gfortran.dg/pr98076.f90   -O1  execution test
FAIL: gfortran.dg/pr98076.f90   -O2  execution test
FAIL: gfortran.dg/pr98076.f90   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  execution test
FAIL: gfortran.dg/pr98076.f90   -O3 -g  execution test
FAIL: gfortran.dg/pr98076.f90   -Os  execution test

But this seems unrelated to my patch.

On 22-05-03 12:21:12, pkubaj@FreeBSD.org wrote:
> From: Piotr Kubaj <pkubaj@FreeBSD.org>
> 
> FreeBSD/powerpc* has feenableexcept() defined in fenv.h header.
> 
> Signed-off-by: Piotr Kubaj <pkubaj@FreeBSD.org>
> ---
>  libgfortran/configure    | 41 +++++++++++++++++++++++++++++++++++++++-
>  libgfortran/configure.ac | 17 ++++++++++++++++-
>  2 files changed, 56 insertions(+), 2 deletions(-)
> 
> diff --git a/libgfortran/configure b/libgfortran/configure
> index ae64dca3114..ad71694ef05 100755
> --- a/libgfortran/configure
> +++ b/libgfortran/configure
> @@ -27338,8 +27338,45 @@ fi
>  
>  
>  
> +case x$target in
> +  xpowerpc*-freebsd*)
> +    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for fenv.h and feenableexcept" >&5
> +$as_echo_n "checking for fenv.h and feenableexcept... " >&6; }
> +if ${have_feenableexcept+:} false; then :
> +  $as_echo_n "(cached) " >&6
> +else
> +
> +        cat confdefs.h - <<_ACEOF >conftest.$ac_ext
> +/* end confdefs.h.  */
> + #include <fenv.h>
> +int
> +main ()
> +{
> + feenableexcept(FE_DIVBYZERO | FE_INVALID);
> +  ;
> +  return 0;
> +}
> +_ACEOF
> +if ac_fn_c_try_compile "$LINENO"; then :
> +   have_feenableexcept="yes"
> +else
> +   have_feenableexcept="no"
> +fi
> +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
> +fi
> +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $have_feenableexcept" >&5
> +$as_echo "$have_feenableexcept" >&6; }
> +    if test "x$have_feenableexcept" = "xyes"; then
> +
> +cat >>confdefs.h <<_ACEOF
> +#define HAVE_FEENABLEEXCEPT 1
> +_ACEOF
> +
> +    fi;
> +    ;;
> +  *)
>  # Check for GNU libc feenableexcept
> -{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for feenableexcept in -lm" >&5
> +    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for feenableexcept in -lm" >&5
>  $as_echo_n "checking for feenableexcept in -lm... " >&6; }
>  if ${ac_cv_lib_m_feenableexcept+:} false; then :
>    $as_echo_n "(cached) " >&6
> @@ -27384,6 +27421,8 @@ $as_echo "#define HAVE_FEENABLEEXCEPT 1" >>confdefs.h
>  
>  fi
>  
> +    ;;
> +esac
>  
>  # At least for glibc, clock_gettime is in librt.  But don't
>  # pull that in if it still doesn't give us the function we want.  This
> diff --git a/libgfortran/configure.ac b/libgfortran/configure.ac
> index 97cc490cb5e..2dd6d345b22 100644
> --- a/libgfortran/configure.ac
> +++ b/libgfortran/configure.ac
> @@ -602,8 +602,23 @@ fi
>  # Check whether we have a __float128 type, depends on enable_libquadmath_support
>  LIBGFOR_CHECK_FLOAT128
>  
> +case x$target in
> +  xpowerpc*-freebsd*)
> +    AC_CACHE_CHECK([for fenv.h and feenableexcept], have_feenableexcept, [
> +      AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
> +        [[ #include <fenv.h>  ]],
> +        [[ feenableexcept(FE_DIVBYZERO | FE_INVALID); ]])],
> +        [ have_feenableexcept="yes" ],
> +        [ have_feenableexcept="no"  ])])
> +    if test "x$have_feenableexcept" = "xyes"; then
> +      AC_DEFINE(HAVE_FEENABLEEXCEPT,1,[fenv.h includes feenableexcept])
> +    fi;
> +    ;;
> +  *)
>  # Check for GNU libc feenableexcept
> -AC_CHECK_LIB([m],[feenableexcept],[have_feenableexcept=yes AC_DEFINE([HAVE_FEENABLEEXCEPT],[1],[libm includes feenableexcept])])
> +    AC_CHECK_LIB([m],[feenableexcept],[have_feenableexcept=yes AC_DEFINE([HAVE_FEENABLEEXCEPT],[1],[libm includes feenableexcept])])
> +    ;;
> +esac
>  
>  # At least for glibc, clock_gettime is in librt.  But don't
>  # pull that in if it still doesn't give us the function we want.  This
> -- 
> 2.36.0
>