[geos-devel] mingw64 file libs changed

[Paul Ramsey]

This is in main now.

P

> On Jun 14, 2022, at 11:05 AM, Regina Obe <lr at pcorp.us> wrote:
> 
> Sandro,
> 
> I'm not sure I understand your question.
> 
> The issue is not the linking of my code. It's the dependency of 
> 
> libgeos_c-1.dll
> 
> To libgeos-3.11.0.dll
> 
> I am trying to get rid of.  
> 
> All my code ends up having a dependency on libgeos_c-1.dll  (before libgeos_c.dll)
> Which before linked to a unversioned libgeos.dll (this libgeos.dll was always called that so could be cleanly removed and replaced)
> 
> I don't care about if the c dll is called libgeos_c-1.dll or libgeos_c.dll.  
> It's the annoyance of that c++ dll changing with every micro release.  
> Cause these are harder to predict and uninstall as part of an install process.
> 
> 
>> -----Original Message-----
>> From: Sandro Mani [mailto:manisandro at gmail.com]
>> Sent: Tuesday, June 14, 2022 1:50 PM
>> To: Regina Obe <lr at pcorp.us>; 'GEOS Development List' <geos-
>> devel at lists.osgeo.org>; Roger.Bivand at nhh.no
>> Subject: Re: [geos-devel] mingw64 file libs changed
>> 
>> Can you point me to the Makefile / ... which is doing this linking? It should
>> never be necessary to point to a versioned shared library name in a link
>> command line. Static libraries are unversioned, and for the dynamic libraries
>> the corresponding import libraries are also unversioned.
>> 
>> Sandro
>> 
>> On 14.06.22 18:21, Regina Obe wrote:
>>> In my case, I need the c++ library statically linked into the geos C-api.
>>> I need the geos c-API shared but not the c++ one.  The main reason for
>>> need of c-api shared is all the extensions I ship rely on that.
>>> So I don't want both statically linked.
>>> 
>>> Also for regression testing I do want to replace the c-lib without
>>> having to recompile all my extensions.
>>> 
>>> Dan and strk had suggested a way to have the c++ be object .a so it
>>> can be statically linked to the c lib.
>>> I'm not sure how to do that in Cmake or if it is even currently possible.
>>> 
>>> So Sandro - my annoyance with your change is now I have this extra c++
>>> lib to worry about which was always a static name before and now is
>>> changing with each micro release.
>>> 
>>> Thanks,
>>> Regina
>>> 
>>> 
>>>> -----Original Message-----
>>>> From: geos-devel [mailto:geos-devel-bounces at lists.osgeo.org] On
>>>> Behalf Of Sandro Mani
>>>> Sent: Tuesday, June 14, 2022 8:00 AM
>>>> To: Roger.Bivand at nhh.no; GEOS Development List <geos-
>>>> devel at lists.osgeo.org>
>>>> Subject: Re: [geos-devel] mingw64 file libs changed
>>>> 
>>>> Just a note: library versioning only applies to shared libraries,
>>>> static
>>> libraries
>>>> are unversioned. And FWIW, import libraries are also unversioned. So
>>>> no
>>> link
>>>> command should be affected (unless you are linking against the dll
>>>> shared library rather than the dll.a import library).
>>>> 
>>>> Sandro
>>>> 
>>>> On 14.06.22 12:59, Roger Bivand wrote:
>>>>> In R >= 4.2, Windows static linked binary packages linking to GEOS
>>>>> use MXE, locally updating the MXE use of GEOS 3.6.2 to 3.9.1:
>>>>> 
>>>>> https://svn.r-project.org/R-dev-web/trunk/WindowsBuilds/winutf8/ucrt
>>>>> 3/
>>>>> toolchain_libs/mxe/src/geos.mk
>>>>> 
>>>>> 
>>>>> We currently hot-patch geos-config to modify it for static libs:
>>>>> 
>>>>> https://svn.r-project.org/R-dev-web/trunk/WindowsBuilds/winutf8/ucrt
>>>>> 3/ toolchain_libs/mxe/src/geos-1-fixes.patch
>>>>> 
>>>>> 
>>>>> We could hot-patch files in a GEOS >= 3.11.0 tarball to remove
>>>>> instructions creating versioned libraries, but have not yet tested
>>>>> RC1. R packages also need to list static linked libraries by name,
>>>>> and revising each of a dozen or so at each GEOS release would be
>>>>> error
>>> prone.
>>>>> Is a cmake option a way to satisfy both those needing versioned, or
>>>>> unversioned library names?
>>>>> 
>>>>> Does anyone else use MXE; if so, might it make sense to feed changes
>>>>> in GEOS forward to MXE?
>>>>> 
>>>>> Best wishes,
>>>>> 
>>>>> Roger
>>>>> 
>>>> _______________________________________________
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