Re: [ANNOUNCEMENT] Updated: curl 7.71.1-1

[Brian Inglis <Brian.Inglis@SystematicSw.ab.ca>]

On 2020-08-11 05:27, Adam Dinwoodie wrote:
> On Tue, 11 Aug 2020 at 12:14, Ken Brown via Cygwin wrote:
>>> In that case, it looks to me as if the generated curl-config --libs statements:
>>>
>>>          if test "Xyes" = "Xno" -o "Xyes" = "Xyes"; then
>>>            echo ${CURLLIBDIR}-lcurl -lnghttp2 -lidn2 -lssh -lpsl -lssl -lcrypto
>>> -lldap -llber -lbrotlidec -lbrotlidec -lz
>>>
>>> based on curl-config.in:
>>>
>>>          if test "X@ENABLE_SHARED@" = "Xno" -o "X@REQUIRE_LIB_DEPS@" = "Xyes"; then
>>>            echo ${CURLLIBDIR}-lcurl @LIBCURL_LIBS@
>>>
>>> REQUIRE_LIB_DEPS should be no, derived from configure.ac:
>>>
>>> if test "X$enable_shared" = "Xyes" -a "X$link_all_deplibs" = "Xno"
>>> then
>>>      REQUIRE_LIB_DEPS=no
>>> else
>>>      REQUIRE_LIB_DEPS=yes
>>> fi
>>> AC_SUBST(REQUIRE_LIB_DEPS)
>>> AM_CONDITIONAL(USE_EXPLICIT_LIB_DEPS, test x$REQUIRE_LIB_DEPS = xyes)
>>>
>>> but for Cygwin link_all_deplibs remains defaulted to unknown, so either that
>>> variable should be set in configure, or that condition should perhaps be changed
>>> to:
>>>
>>> if test "X$enable_shared" = "Xyes" -a "X$link_all_deplibs" != "Xyes"
>>>
>>> with appropriate bug reports and changes to be made upstream if possible.
>>
>> If you want to look into ways of fixing curl-config different from what Yaakov
>> did, that's fine; you're the maintainer.  All I did was look at Yaakov's patch
>> and port it to curl 7.71.1, that being a quick and easy way to fix the reported
>> problem.
> 
> Someone else did raise this problem upstream at
> https://github.com/curl/curl/issues/5793, and the comments there imply
> they'd be interested in integrating patches Cygwin uses into the
> upstream code, although the upstream maintainers aren't going to do
> that without someone proactively submitting the patch to them.

I'll copy these comments and suggestions and follow up there, as that appears to
be the official bug tracker, and they appear receptive to discussing and fixing
issues.

> For my part, I'm not particularly fussed whether this is fixed with an
> upstream patch or a Cygwin patch; I just want my use cases to work,
> and as of 7.71.1-1 they don't. That said, my experience of being a
> package maintainer would lead me to want to submit patches upstream if
> at all possible, just to reduce the need to handle these sorts of
> problems. My inclination would be to restore the patched behaviour
> with Ken's new patch as a short-term fix, then get this submitted
> upstream so that in the long-term this patch can be retired.

I did not see or get your original email, and could not reproduce your issue
using the current git source package, curl package, and cygport.
That could be due to two missing perl modules (solved in another sub-thread by
Achim).
Any suggestions as to what may be required to get curl-config to act up in a
build would be appreciated.
It is always easier to check if a problem is actually fixed when you can perform
an in situ regression test.
Running curl-config and reading the docs, it does not appear to me to be clearly
specified why and when dynamic and static library parameters are either built in
or generated, whereas the conditions for reproducing the output are well
specified for pkgconf/pkg-config.
That may become more apparent in follow ups on the bug tracker.

-- 
Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada

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