[mapserver-dev] Revisit installing multiple mapserver versions

[thomas bonfort]

I believe we have 2 options here:
- without any change to our build, you can configure with
--prefix=/usr/local/mapserver-6.2, then
/usr/local/mapserver-6.2/bin/mapserv will link to
/usr/local/mapserver-6.2/lib/libmapserver.so, and your multiple
mapserv binaries can be copied around and will link to their original
libmapserver.so location
- we can update our build process to add libtool version-info
information, which is supposed to work in this case. This will need to
be manually tweaked at release time as the libtool version-info isn't
related to our own versioning scheme (c.f.
http://www.freesoftwaremagazine.com/articles/building_shared_libraries_once_using_autotools,
scroll down to "The Libtool library versioning scheme")

--
thomas

On Mon, Jul 16, 2012 at 5:50 PM, Stephen Woodbridge
<woodbri at swoodbridge.com> wrote:
> Thomas,
>
> I am have a problem with multiple mapserver versions installed. This is a
> common scenario in many environments. Looking at my system, I have:
>
>> woodbri at mappy:$ ls /usr/local/lib/libmaps* -l
>> -rwxr-xr-x 1 root root 5942968 2012-07-02 09:36
>> /usr/local/lib/libmapserver-6.1-dev.so
>> -rwxr-xr-x 1 root root 5934502 2012-07-14 17:10
>> /usr/local/lib/libmapserver-6.2.0-beta1.so
>> -rwxr-xr-x 1 root root 5935167 2012-07-14 23:24
>> /usr/local/lib/libmapserver-6.3-dev.so
>> -rwxr-xr-x 1 root root    2066 2012-07-14 23:24
>> /usr/local/lib/libmapserver.la
>> lrwxrwxrwx 1 root root      23 2012-07-14 23:24
>> /usr/local/lib/libmapserver.so -> libmapserver-6.3-dev.so
>> woodbri at mappy:$ ls /usr/local/lib/libmapserver.so -l
>> lrwxrwxrwx 1 root root 23 2012-07-14 23:24 /usr/local/lib/libmapserver.so
>> -> libmapserver-6.3-dev.so
>
>
>> woodbri at mappy:$ ls /usr/local/bin/mapserv
>> /usr/local/bin/mapserv
>
>
>> woodbri at mappy:$ mapserv -v
>> MapServer version 6.3-dev OUTPUT=GIF OUTPUT=PNG OUTPUT=JPEG SUPPORTS=PROJ
>> SUPPORTS=GD SUPPORTS=AGG SUPPORTS=FREETYPE SUPPORTS=CAIRO SUPPORTS=ICONV
>> SUPPORTS=FRIBIDI SUPPORTS=WMS_SERVER SUPPORTS=WMS_CLIENT SUPPORTS=WFS_SERVER
>> SUPPORTS=GEOS INPUT=JPEG INPUT=POSTGIS INPUT=OGR INPUT=GDAL INPUT=SHAPEFILE
>
>
> This one works fine since it was last installed. But my typical pattern is
> to install mapserver then:
>
>   cp /usr/local/bin/mapserv /path/to/cgi-bin/mapserv-<version>
>
> So I have these on my system:
>
> /usr/lib/cgi-bin/mapserv
> /usr/lib/cgi-bin/mapserv-6.1-dev
> /usr/lib/cgi-bin/mapserv-6.2-beta1
> /usr/lib/cgi-bin/mapserv-60
> /usr/lib/cgi-bin/mapserv-tc
>
> I think the problem is the symlink:
>
> /usr/local/lib/libmapserver.so -> libmapserver-6.3-dev.so
>
> Ideally the executable should try to load the explicit library that it was
> built against and not some generic libmapserver.so that is a symlink and
> then I think everything would work just fine.
>
> Is this something that can be done?
>
> Thanks,
>   -Steve
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