MathGL не собирается из АУР, вот лог:
mgl_octave.cpp:149:24: fatal error: octave/oct.h: No such file or directory
compilation terminated.
make[2]: *** [mathgl.oct] Error 1
make[2]: Leaving directory `/tmp/yaourt-tmp-saa/aur-mathgl/src/mathgl-1.11.1.1/lang'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/tmp/yaourt-tmp-saa/aur-mathgl/src/mathgl-1.11.1.1/lang'
make: *** [all-recursive] Error 1
Octave установлен.