2.6.12内核编译问题built-in.o

drivers/built-in.o(.text+0x33e24): In function `drm_lock_take':
drivers/char/drm/drm_lock.c:208: undefined reference to `cmpxchg'
drivers/built-in.o(.text+0x33ea: In function `drm_lock_transfer':
drivers/char/drm/drm_lock.c:248: undefined reference to `cmpxchg'
drivers/built-in.o(.text+0x33eec): In function `drm_lock_free':
drivers/char/drm/drm_lock.c:273: undefined reference to `cmpxchg'
drivers/built-in.o(.text+0x33f9c): In function `drm_notifier':
drivers/char/drm/drm_lock.c:310: undefined reference to `cmpxchg'
make: *** [.tmp_vmlinux1] 错误 1

 

答案：在Device Driver里选择了Direct Rendering Manager驱动，ARM里不支持这个驱动，去掉选项就可以了