Re: GRASS module version strictness (libgrass_gis)

Hi,

On Fri, 05. Mar 2021 at 20:23:47 +0100, Benjamin Ducke wrote:
> I am trying to find a way to inject GRASS modules (C code)
> compiled  in a GRASS 7 source tree into an already installed
> version of GRASS. Even if I compile in a GRASS 7.8.5 tree and
> then copy into a GRASS 7.8.5 (i.e. exact version match)
> installation, I get this:
> 
> ERROR: Module built against version 2021-03-04T21:51:47+00:00 but trying to
>        use version 2021-01-01T10:33:43+00:00. You need to rebuild GRASS GIS
>        or untangle multiple installations.
> 
> This is coming from 'libgrass_gis'.

> Apparently, GRASS keeps exact timestamps of the binaries and
> won't allow any mixing.

Note: In OSGeo4W testing I've disabled that check in lib/gis/gisinit.c.  The
DLLs already carry the major and minor version number in their name already.

I guess it's there because the ABI could change anytime - even in point
releases - and the libs are only meant for GRASS itself AFAIK.

But I'd also think that the chance for breakages is reasonable small enough to
do this.  Using the libs with a different compiler in the QGIS plugin like we
do is probably a bigger risk anyway.


Jürgena.

-- 
Jürgen E. Fischer           norBIT GmbH             Tel. +49-4931-918175-31
Dipl.-Inf. (FH)             Rheinstraße 13          Fax. +49-4931-918175-50
Software Engineer           D-26506 Norden            https://www.norbit.de
QGIS release manager (PSC)  Germany                    IRC: jef on FreeNode

_______________________________________________
grass-dev mailing list
[email protected]
https://lists.osgeo.org/mailman/listinfo/grass-dev

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.9 (GNU/Linux)
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=ejiy
-----END PGP SIGNATURE-----