i.mx6q飞凌开发板 交叉编译vlc-3.0.8 make错误

错误记录：

video_output/glx.c:29:20: fatal error: GL/glx.h: No such file or directory
compilation terminated.
Makefile:22020: recipe for target 'video_output/libglx_plugin_la-glx.lo' failed
make[4]: *** [video_output/libglx_plugin_la-glx.lo] Error 1
make[4]: *** Waiting for unfinished jobs....
video_output/vdummy.c: In function 'DisplayStat':
video_output/vdummy.c:151:54: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
          (picture->p->i_pitch * picture->p->i_lines) >= sizeof(mtime_t) ) {
                                                      ^
make[4]: Leaving directory '/home/vlc-3.0.8/modules'
Makefile:27485: recipe for target 'all-recursive' failed
make[3]: *** [all-recursive] Error 1
make[3]: Leaving directory '/home/vlc-3.0.8/modules'
Makefile:12539: recipe for target 'all' failed
make[2]: *** [all] Error 2
make[2]: Leaving directory '/home/vlc-3.0.8/modules'
Makefile:1553: recipe for target 'all-recursive' failed
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory '/home/vlc-3.0.8'
Makefile:1438: recipe for target 'all' failed
make: *** [all] Error 2

解决办法：