Using openblas instead of blas breaks fltk - plotting in Octave When I try to plot anything in GNU Octave, I get this error. octave:1> plot(linspace(1,2,30),linspace(1,1,30)) error: feval: /usr/lib/octave/5.2.0/oct/x86_64-pc-linux-gnu/__init_fltk__.oct: failed to load: libfltk_gl.so.1.3: cannot open shared object file: No such file or directory error: called from graphics_toolkit at line 91 column 5 figure at line 91 column 7 newplot at line 117 column 10 plot at line 222 column 9 One workaround is to use `gnuplot` instead of `fltk`, but the plots look better with `fltk`. It turned out that `blas` was replaced by `openblas` during installing Julia, and after installing `blas` (by removing `julia` and `openblas`) it works again. So, how to make `fltk` work with `openblas`?

I was able to fix this by installing fltk with `sudo pacman -S fltk`.