vendor/libretro-common/vfs/vfs_implementation_cdrom.c: In function ‘retro_vfs_file_seek_cdrom’:
vendor/libretro-common/vfs/vfs_implementation_cdrom.c:49:19: error: ‘libretro_vfs_implementation_file {aka struct libretro_vfs_implementation_file}’ has no member named ‘cdrom’
stream->cdrom.byte_pos = offset;
^~
compilation terminated due to -Wfatal-errors.
Makefile:25: recipe for target 'vendor/libretro-common/vfs/vfs_implementation_cdrom.o' failed
make: *** [vendor/libretro-common/vfs/vfs_implementation_cdrom.o] Error 1

https://github.com/libretro/libretro-common/blob/master/vfs/vfs_implementation_cdrom.c#L49