Re: cygwin build

[Jon Turney <jon.turney@dronecode.org.uk>]

On 03/08/2023 09:21, Thomas Wolff wrote:
> Am 02.08.2023 um 10:09 schrieb Corinna Vinschen:
>> On Aug  2 08:36, Thomas Wolff wrote:
>>>
>>> Am 01.08.2023 um 23:27 schrieb Corinna Vinschen:
>>>> On Aug  1 23:05, Thomas Wolff wrote:
>>>>> I took some of the latest cygwin snapshots (by the way, there are 
>>>>> no newer
>>>>> ones on the snapshots page):
>>>> Snapshots are no longer produced.  You should download the latest
>>>> test versions via setup.
>>> So what if I need an older version?
>> It's all documented:
>>
>> https://cygwin.com/git.html
>> https://cygwin.com/faq.html#faq.programming.building-cygwin
> Thanks. Actually package mingw zlib was missing (when I installed it, it 
> got mistargeted to my parallel test installation).
> It now worked, kind of, with some build errors after producing the dll.

Nobody can take any useful action about those "build errors" if you keep 
them secret.

> However, after I checked out an older git commit, rebuild fails again:
> make[4]: Entering directory 
> '/cygdrive/c/tmp/newlib-cygwin/build/x86_64-pc-cygwin/newlib/libc'
> make[4]: *** No rule to make target 'all'.  Stop.
> So I'm not getting another dll after changing the git reference.
> 

Yeah, this seems a bit optimistic expecting that to work going backwards 
over the various recent build system changes.

Maybe things would work if you'd initially configured with 
--enable-maintainer-mode (off by default for newlib), but even then, 
sometimes the only solution is to scrub the build directory and start 
afresh.