Re: Broken bootstrap on Cygwin

[Angelo Graziosi <angelo dot graziosi at alice dot it>]

Il 07/02/2011 19.48, Charles Wilson ha scritto:
> On 2/7/2011 1:41 PM, Angelo Graziosi wrote:
> > Current trunk, rev. 169888, fails to bootstrap on Cygwin with this error:
> >
> > [...]
> > /tmp/gcc-4.6-r169888/libgcc/config/libbid/bid_decimal_globals.c:47:18:
> > fatal error: fenv.h: No such file or directory
> > compilation terminated.
> > make[2]: *** [bid_decimal_globals.o] Error 1
> > make[2]: *** Waiting for unfinished jobs....
> > make[2]: Leaving directory
> > `/tmp/gcc-4.6-r169888/Work/i686-pc-cygwin/libgcc'
> > make[1]: *** [all-target-libgcc] Error 2
> > make[1]: Leaving directory `/tmp/gcc-4.6-r169888/Work'
> > make: *** [all] Error 2
>
> This was a deliberate choice: e.g. to require a development version of
> cygwin in order to bootstrap the 4.6 branch.
>
> Rationale: fenv.h support will be present in cygwin 1.7.8 which is due
> out any day now, and we didn't want to wait 6-8 months for the gcc-4.7
> cycle in order to support decimal-floating-point stuff in cygwin/gcc.
>
> You can install one of the more recent cygwin snapshots, and the build
> should then work.

I do not understand the logic here: break GCC trunk for something that 
hasn't been yet released.

Often new Cygwin version was announced as imminent and the true release 
delayed for months..

(This time the announce was for 01 or 02 February.. and up today, 07, 
nothing happened.)


GCC maintainers is this OK for your policy?


    Angelo