Error while rebuilding IDE on Debian 11 (KDE Plasma) lazarus / 1-Linux ---------------------------------------------------------------------- d4eva · 2022-07-18 19:12 I just installed Debian 11  (KDE Plasma) under Virtual Box. And installed Lazarus 2.2.2, FPC 3.2.2 (latest stable releases) IDE works, I can compile my app, but when I try to rebuild the IDE, I get those errors: Warning: linker: /usr/bin/ld: cannot find -lGL make[2]: *** [Makefile:4667: lazarus] Error 1 make[1]: *** [Makefile:5105: idepkg] Error 2 Error: make: *** [Makefile:3793: idepkg] Error 2 lazarus.pp(167,1) Error: Error while linking ---------------------------------------------------------------------- Handoko · 2022-07-18 19:51 If I remember correctly, I got that warning when I didn't have OpenGL library installed correctly. I'm not sure how I fixed it but I remember I did these: - Make sure correct VGA driver is installed - Reinstall libgl1-mesa-dev and libgles2-mesa-dev packages - Run: sudo ln -s /usr/lib/x86_64-linux-gnu/libGL.so.1 /usr/lib/libGL.so I used Ubuntu Mate and NVidia vga. ---------------------------------------------------------------------- d4eva · 2022-07-19 08:02 Thanks. libgl1-mesa-dev was already installed, but sudo apt  install libgles2-mesa-dev helped. I didn't even need to run the ln. ---------------------------------------------------------------------- TeoUrbana · 2024-08-15 20:54 Quote from: d4eva on July 19, 2022, 10:02:55 amThanks. libgl1-mesa-dev was already installed, but sudo apt  install libgles2-mesa-dev helped. I didn't even need to run the ln. Thanks Handoko, I solved intalling libgl1-mesa-dev.