[m-users.] Problem compiling 14.01.1 on 64 bit Cygwin

[Julien Fischer]

Hi Peter,

On Mon, 27 Oct 2014, Peter Chapin wrote:

> I previously tried to compile 14.01 on 64 bit Cygwin and encountered an error 
> in the Boehm GC related to 64 bit targets. I posted to this list and was told 
> there was an issue building Boehm for 64 bits but that there was an upstream 
> fix that would make its way into Mercury at the next release.
>
> The release notes for 14.01.1 include
>
> * A problem that caused compilation of the Boehm GC to fail on 64-bit 
> openSUSE 13.1 systems has been fixed.  (Github issue #14)
>
> Optimistically I attempted to build Mercury 14.01.1 on 64 bit Cygwin again 
> but encountered what looks like the same problem. In particular:
>
> /usr/local/src/mercury-srcdist-14.01.1/boehm_gc/../scripts/mgnuc --grade 
> hlc.gc.pregen --no-ansi --no-check --no-mercury-stdlib-dir -I./include 
> -I./libatomic_ops-install/include -DNO_EXECUTE_PERMISSION -DLARGE_CONFIG 
> -DNO_DEBUGGING   -c -o alloc.o alloc.c
>
> In file included from ./include/private/gc_priv.h:94:0,
>                 from alloc.c:18:
> ./include/private/gcconfig.h:1096:7: error: #error This should be handled as 
> X86_64
> #     error This should be handled as X86_64
>       ^
> ./include/private/gcconfig.h:2416:3: error: #error --> undefined ALIGNMENT
> # error --> undefined ALIGNMENT
>   ^
> <builtin>: recipe for target 'alloc.o' failed
>
>
> So I guess 64 bit Cygwin is not supported yet? Or am I missing a 
> configuration option that I should be used (I ran configure with no 
> arguments).

14.01.1 is still using the same verison of the Boehm GC as 14.01, so the
issue with 64-bit Cygwin is still the collector.
(We generally don't upgrade the Boehm GC  on stable release branches.)

Cheers,
Julien.