Fedora 27 provides at the moment plplot 5.12.x, which uses a new library scheme: there is no libplplotf95c.so anymore. Additionally the Fortran sees duplicated ...

I have made a test in MSYS2 with a fpm project depending on gtk-fortran and PLplot and had the same errors as you with the single quotes. It was better with double quotes, but finally the compilation ...

The PLplot development team are proud to announce that PLplot version 5.13.0 has just been released, https://lnkd.in/guqaKyj. PLplot is one of the most comprehensive plotting libraries around for use ...