https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100662
--- Comment #6 from Steve Kargl <sgk at troutmask dot apl.washington.edu> --- On Wed, May 19, 2021 at 12:56:57AM +0000, yuri at tsoft dot com wrote: > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100662 > > --- Comment #5 from Yuri <yuri at tsoft dot com> --- > config.log doesn't contain the IEEE string even on amd64. > > libgfortran/configure.host seems to only enable IEEE modules on i?86 | x86_64 > architectures through this code: > > > case "${host_cpu}" in > > i?86 | x86_64) > > if test "x${have_soft_float}" = "xyes"; then > > fpu_host='fpu-generic' > > else > > fpu_host='fpu-387' > > fi > > ieee_support='yes' > > ;; > > esac > > What does gcc need from OS for IEEE754? > Shouldn't it just compile with relevant to IEEE754 opcodes? > In x86_64-unknown-freebsd14.0/libgfortran/config.log I see configure:26522: FPU dependent file will be fpu-387.h configure:26524: Support for IEEE modules: yes Looking at libgfortran/configure and libgfortran/configure.host and looking in libgfortran/config/, it seems you'll need to define an fpu-aarch64.h I don't have an aarch64 system nor access to such a system, so can't help you more.
