I tried reinstall tdelibs14-trinity-dev and libtiff4-dev
just to find out that neither libtiff4 nor libtiff4-dev is installable.

How did I get it on my system?

is libtiff5 compatible?

thanks and regards

apt-get --reinstall install libtiff4-dev tdelibs14-trinity-dev 
libtiff4:amd64
Reading package lists... Done
Building dependency tree
Reading state information... Done
Reinstallation of libtiff4 is not possible, it cannot be downloaded.
Reinstallation of libtiff4-dev is not possible, it cannot be downloaded.
0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 8 not
upgraded.
Need to get 0 B/6,151 kB of archives.
After this operation, 0 B of additional disk space will be used.
Do you want to continue? [Y/n]
(Reading database ... 373052 files and directories currently installed.)
Preparing to
unpack .../tdelibs14-trinity-dev_4%3a14.0.2-0debian8.0.0+0_amd64.deb ...
Unpacking tdelibs14-trinity-dev (4:14.0.2-0debian8.0.0+0) over
(4:14.0.2-0debian8.0.0+0) ...
Processing triggers for man-db (2.7.0.2-5) ...
Setting up tdelibs14-trinity-dev (4:14.0.2-0debian8.0.0+0) ...
Processing triggers for libc-bin (2.19-18+deb8u1) ...