Tiff extra "t" at 4.6.0 was because in 4.6.0 the developers removed a bunch of code that had not been worked on for a long time and they considered it to be a security issue.  They then realized their mistake in removing that code so they put it back and added the "t" as the release number.  With 4.7.0 (and no "t" needed) they added all of that code back and I did not check but would imagine they plugged any security holes.

On Sat, Apr 12, 2025 at 3:24 AM Andrea paz via Cin <cin@lists.cinelerra-gg.org> wrote:
In .../thirdparty/src there is also a tarball “tiff-4.6.0t.tar.xz”
i.e. with an extra “t” after the 0. There are also 2 patches
concerning this version with the extra “t”. I cannot find on git any
tarball 4.7.0 with the extra “t” (there is a version with “orca”). I
tried to delete tarball and its 2 patches, but I have a crash of which
I attach the “cin_t.log”.
I redid the compilation leaving tarball and the 2 patches (4.6.0) and
I still have a crash of which I attach the “cin_6.log”.
Finally, out of curiosity, I tried a build without thirdparty, that
is, with system ffmpeg and no patches. The build is successful and I
can load and work on tiff images.
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