WARNING bootstrapping GFortran on Cygwin
Brian Dessent
brian@dessent.net
Wed Aug 22 07:53:00 GMT 2007
Angelo Graziosi wrote:
> configure: WARNING: fixed-point is not supported for this target
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> checking whether make sets $(MAKE)... yes
> ...
>
> This warning was absent with the bootstrap I did 20070819 trunk-127626.
That's because this is a new feature that was just merged. The specific
patch that added it seems to be
<http://gcc.gnu.org/ml/gcc-patches/2007-08/msg01070.html>.
+AC_ARG_ENABLE(fixed-point,
+[ --enable-fixed-point enable fixed-point arithmetic extension to
C],
+[
+],
+[
+ case $target in
+ mips*-*-*)
+ enable_fixed_point=yes
+ ;;
+ *)
+ AC_MSG_WARN(fixed-point is not supported for this target,
ignored)
+ enable_fixed_point=no
+ ;;
+ esac
+])
It does seem a bit spurious to AC_MSG_WARN on all non-supported targets,
even if the user didn't attempt any --enable-fixed-point, but you can at
least silence it with --disable-fixed-point.
> Should I 'tune' the build adding something in 'configure' ?
Pretty sure this requires hardware support, e.g. on a DSP. Not the kind
of thing they make configure switches for... :)
Brian
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