On 7/22/22 09:37, Sebastiaan Couwenberg wrote:
On 7/22/22 09:02, Antonio Valentino wrote:
Regarding libtiff I don't know the if it is currently able to build with lerc4. I will check and submit a patch upstream if necessary.

Having the new lerc in experimental makes it much easier for the rdep maintainers to test with the new version.

I generally put such packages in my sid+rebuild repo while its in NEW, this repo is used by my base-sid-rebuild.cow chroot, and is used in turn to rebuild all rdeps:

  pdebuild --pbuilder cowbuilder -- \
           --basepath /var/cache/pbuilder/base-sid+rebuild.cow

For transitions with multiple dependency levels the rebuilt packages get included in the sid+rebuild repo too to make them available for the rebuilds of the rdeps that also (build) depend on those.

I just did this for lerc, both tiff and gdal (after updating it to use external lerc) build successfully with the new lerc.

Finally I'm wondering why also gdal is not in the rdep list.
I'm pretty sure that also other drivers, beyond GTIFF,  use lerc.

Because gdal uses the embedded copy:


https://salsa.debian.org/debian-gis-team/gdal/-/blob/master/debian/rules#L74

This is default behavior for GDAL, the autotools build did the same without any specific LERC configure options:

   LERC support:              internal

https://buildd.debian.org/status/fetch.php?pkg=gdal&arch=amd64&ver=3.4.3%2Bdfsg-1&stamp=1651663546&raw=0

Now that lerc is also packaged separately, we could switch gdal to use that instead of the embedded copy.

I've pushed a commit for that.

Kind Regards,

Bas

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