how to force the use of fast floating point support?

[joudinet]

Cross-compiling using the buildroot project, I found out that this project enables SPANDSP_USE_FIXED_POINT because the AX_FIXED_POINT_MACHINE rule believes my arm machine lacks fast hardware floating point, which is wrong.
I found out this issue due to another issue in v17rx.c, already reported in #18
According to #53 this was already broken and I believe the fix of this issue that defines the macro SPANDSP_USE_FIXED_POINTx in v17rx.c is wrong, which causes #18, but this is not my issue.

I would like to force the use of floating point, because I know my arm machine does support fast hardware floating point. Unfortunately, the configure does not offer this option. If I try --disable-fixed-point, it goes to the else part, which actually enable fixed point for any arm machines :-/

 if test "$enable_fixed_point" = "yes" ; then
    AC_DEFINE([SPANDSP_USE_FIXED_POINT], [1], [Enable fixed point processing, where possible, instead of floating point])
    SPANDSP_USE_FIXED_POINT="#define SPANDSP_USE_FIXED_POINT 1"
else
    AX_FIXED_POINT_MACHINE([$host],
        [AC_DEFINE([SPANDSP_USE_FIXED_POINT], [1], [Enable fixed point processing, where possible, instead of floating point])
        SPANDSP_USE_FIXED_POINT="#define SPANDSP_USE_FIXED_POINT 1"],
        [SPANDSP_USE_FIXED_POINT="#undef SPANDSP_USE_FIXED_POINT"])
fi

Would you agree to fix this test so if one asks for --disable-fixed-point, it does not enable it, or do you prefer to completely remove the fixed_point support, which seems broken at the moment anyway.