Re: cygwin build

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

On 05/08/2023 19:18, Thomas Wolff wrote:
> 
> 
> Am 03.08.2023 um 15:12 schrieb Jon Turney:
>> 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.
>>
> Sure, I just mentioned it and didn't post details as it wasn't essential 
> for the discussed issue. Anyway, here are the final error message I 
> often encounter:
> 
> make[5]: Entering directory 
> '/cygdrive/c/tmp/newlib-cygwin/build/x86_64-pc-cygwin/winsup/utils'
>    CXXLD    dumper.exe
> /usr/lib/gcc/x86_64-pc-cygwin/11/../../../../x86_64-pc-cygwin/bin/ld: 
> /usr/lib/gcc/x86_64-pc-cygwin/11/../../../../lib/libbfd.a(compress.o): 
> in function `decompress_contents':
Ah, right.

This is a problem with the primitive time-travel technology you are using.

dumper relies on libbfd, which since binutils 2.40 relies on zstd.

bfd doesn't provide a .pc file, so the dependencies are explicitly 
listed in our makefile.

You'll either needs to backport the commit [1] which adds zstd to the 
link line to fix this, or also roll back binutils to the version which 
was current when this built...

[1] 
https://cygwin.com/git/?p=newlib-cygwin.git;a=commitdiff;h=1387ea9f984d5a7aa096a66b67d61dc2cc565d21;hp=588624da2b0a921c7e72d12d19c2ac3321de0326