gnulib m4/threadlib.m4 bug crashing package tests

[Ken Brown]

On 11/26/2021 12:34 PM, Brian Inglis wrote:
> On 2021-11-26 06:08, Ken Brown via Cygwin-apps wrote:
>> On 11/25/2021 1:25 PM, Yaakov Selkowitz via Cygwin-apps wrote:
>>> Add gl_cv_have_weak=no to cygconf?
>>
>> Are you suggesting maintainers should do this, or are you talking about 
>> patching cygport, like this:
>>
>> diff --git a/cygclass/autotools.cygclass b/cygclass/autotools.cygclass
>> index 712f437..8b6fdde 100644
>> --- a/cygclass/autotools.cygclass
>> +++ b/cygclass/autotools.cygclass
>> @@ -735,6 +735,14 @@ cygconf() {
>>                  export ac_cv_func_mmap_fixed_mapped=yes ;;
>>          esac
>>
>> +       # Some versions of gnulib's threadlib.m4:gl_WEAK_SYMBOLS
>> +       # incorrectly report that Cygwin supports weak symbols.  See
>> +       # https://cygwin.com/pipermail/cygwin-apps/2021-September/041587.html.
>> +       case ${CHOST} in
>> +       *-*-cygwin*)
>> +               export gl_cv_have_weak=no ;;
>> +       esac
>> +
>>          # packages that use intltool w/o glib-gettext get this wrong
>>          export DATADIRNAME="share"
> 
> Normally in a regular/autotools build the maintainer appends these overrides to:
> 
>      CYGCONF_ARGS=...gl_cv_have_weak=guessing\ no
> 
> or to:
> 
> src_compile() {
>          cd ${S}
>          cygautoreconf
>          cd ${B}
>      cygconf ... gl_cv_have_weak=guessing\ no
>          cygmake
> }

cygport already does this for ac_cv_func_mmap_fixed_mapped.  That's why I asked 
Yaakov to clarify what he had in mind.

Ken