bug#45303: #45303 [feature/native-comp] building error on Windows

[Andy Moreton]

On Sat 19 Dec 2020, Andrea Corallo via "Bug reports for GNU Emacs, the Swiss 
army knife of text editors" wrote:

> Pal Gloss <pcfeb0009@gmx.com> writes:
>
>> Hi,
>>
>> thank you for the quick fixes
>>
>> I do not understand 3b53a591faed03679382a601b93da7fe6ce3b4af: the way
>
> No you are right, this morning I was a little in a rush and I might have
> failed grepping, hopefully ab985f41db is better.
>
> [...]
>
>> I just checked and these %emacs_dir% are also present in a "normal" emacs
>> 27.1 (installed via msys2/mingw pacman, not self-built).
>>
>>> Right so (unless I'm forgetting something) just the zlib linker error
>>> should be remaining, correct?
>>
>> It was not only zlib that was missing, but also gccjit (my hack sets both: 
>> LIBGCCJIT = -lz -lgccjit)
>
> With 407fb16583 I think '-lgccjit' should be unnecessary on Windows now,
> is it?

There is one piece missing from that commit: another define around
L379 to replace gcc_jit_type_get_const with fn_gcc_jit_type_get_const.

    AndyM