File list of package libgl-dev in bullseye of architecture amd64
/usr/include/GL/gl.h /usr/include/GL/glcorearb.h /usr/include/GL/glext.h /usr/include/KHR/khrplatform.h /usr/lib/x86_64-linux-gnu/libGL.so /usr/lib/x86_64-linux-gnu/pkgconfig/gl.pc /usr/share/bug/libgl-dev/control /usr/share/doc/libgl-dev/changelog.Debian.gz /usr/share/doc/libgl-dev/copyright