[Bug libfortran/94586] trigd_lib.inc:84:28: error: implicit declaration of function 'fmaf'

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94586

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Not all targets have a C99 math runtime.  libgfortran configury tests for a
load
of C99 functions:

# Check for C99 (and other IEEE) math functions
GCC_CHECK_MATH_FUNC([acosf])
GCC_CHECK_MATH_FUNC([acos])
GCC_CHECK_MATH_FUNC([acosl])
GCC_CHECK_MATH_FUNC([acoshf])
...

but fails to check for fma[lf ] (I also don't see any uses of the HAVE_*
macros defined but that's another issue.