On 64bit Fedora, legacy_printer_app_serverbin gets set to /usr/lib64/legacy-printer-app and I imagine on x86-64 Ubuntu/Debian it would get set to /usr/lib/x86_64-linux-gnu/legacy-printer-app
As /usr/lib/legacy-printer-app is a symlink to /usr/lib/cups when $CUPS_SERVERBIN is set and historically that CUPS directory is more akin to a libexecdir rather than a libdir that contains libraries. I'm thinking an appropriate solution might be to set legacy_printer_app_serverbin to the following in Makefile.am and match what is used in pappl-retrofit.c:
which would resolve to /usr/lib/legacy-printer-app on majority of Linux distros, although $(exec_prefix)/lib/legacy-printer-app is probably more appropriate semantically, exec_prefix might be set to the not so useful NONE on some Linux distros.
legacy-printer-app 1.0b2 built on Fedora 38 beta.
Clicking on Add Printer button in the web interface results in the following error:
Relevant code :
https://github.com/OpenPrinting/pappl-retrofit/blob/77233b62059773cf93ce1fd0eeeae6fe488f2d45/Makefile.am#L93
https://github.com/OpenPrinting/pappl-retrofit/blob/77233b62059773cf93ce1fd0eeeae6fe488f2d45/pappl-retrofit/pappl-retrofit.c#L4698-L4699
On 64bit Fedora,
legacy_printer_app_serverbingets set to/usr/lib64/legacy-printer-appand I imagine on x86-64 Ubuntu/Debian it would get set to/usr/lib/x86_64-linux-gnu/legacy-printer-appAs
/usr/lib/legacy-printer-appis a symlink to/usr/lib/cupswhen$CUPS_SERVERBINis set and historically that CUPS directory is more akin to a libexecdir rather than a libdir that contains libraries. I'm thinking an appropriate solution might be to setlegacy_printer_app_serverbinto the following inMakefile.amand match what is used inpappl-retrofit.c:which would resolve to
/usr/lib/legacy-printer-appon majority of Linux distros, although$(exec_prefix)/lib/legacy-printer-appis probably more appropriate semantically,exec_prefixmight be set to the not so usefulNONEon some Linux distros.