首先复制配置文件： #cd /usr/src/sys/amd64/conf #mkdir /root/kernel #cp GENERIC /root/kernel/MY_KERNEL_CONF #ln -s /root/kernel/MY_KERNEL_CONF 这样作的好处是更新源代码之后如果像要重新编译内核，就不会需要重新弄一个配制文件了。 第二步是准备硬件清单 #dmesg > hardware #vi hardware 就可以查看机器的硬件配制了 接下来开始修改配置文件 vi MY_KERNEL_CONF 其中我的改动有： ident GENERIC => ident MY_KERNEL 这个是内核的名字，以此来与之前的内核相区分 接下来的大部分是操作系统核心相关的东东，如文件系统，进程调度等，大部分我都是直接保留，注释掉了ipv6 相关的选项以及与FreeBSD4兼容的选项，因为我在FreebSD.org上看到的amd64 架构是从FreeBSD5.3 开始的 到后面就是根据硬件配制清单定制驱动，根据需求删减 配制完毕后开始编译 #cd /usr/src #make buildkernel KERNCONF=MY_KERNEL_CONF 很不幸在链接时报错退出： linking kernel.debug umass.o(.text+0xcf): In function `umass_detach': /usr/src/sys/dev/usb/storage/umass.c:2825: undefined reference to `xpt_bus_deregister' umass.o(.text+0xf3):/usr/src/sys/dev/usb/storage/umass.c:2828: undefined reference to `cam_sim_free' umass.o(.text+0xd6c): In function `umass_std_transform': /usr/src/sys/dev/usb/storage/umass.c:3613: undefined reference to `xpt_done' u9):/usr/src/sys/dev/usb/storage/umass.c:2689: undefined reference to `cam_sim_alloc' umass.o(.text+0x2b54):/usr/src/sys/dev/usb/storage/umass.c:2711: undefined reference to `xpt_bus_register' umass.o(.text+0x2db0):/usr/src/sys/dev/usb/storage/umass.c:2770: undefined reference to `xpt_periph' umass.o(.text+0x2db5):/usr/src/sys/dev/usb/storage/umass.c:2770: undefined reference to `xpt_create_path' umass.o(.text+0x2ec9):/usr/src/sys/dev/usb/storage/umass.c:2702: undefined reference to `cam_simq_free' umass.o(.text+0x2f2d):/usr/src/sys/dev/usb/storage/umass.c:2779: undefined reference `xpt_free_path' umass.o(.text+0x308d): In function `umass_cam_action': /usr/src/sys/dev/usb/storage/umass.c:2849: undefined reference to `xpt_done' umass.o(.text+0x317b):/usr/src/sys/dev/usb/storage/umass.c:3131: undefined reference to `xpt_done' umass.o(.text+0x31ca):/usr/src/sys/dev/usb/storage/umass.c:2900: undefined reference to `xpt_done' umass.o(.text+0x329b):/usr/src/sys/dev/usb/storage/umass.c:3121: undefined reference to `xpt_done' umass.o(.text+0x3324):/usr/src/sys/dev/usb/storage/umass.c:2936: undefined reference to `xpt_done' umass.o(.text+0x33b2):/usr/src/sys/dev/usb/storage/umass.c:3095: more undefined references to `xpt_done' fo.o(.text+0x35be):/usr/src/sys/dev/usb/storage/umass.c:3073: undefined reference to `xpt_done' umass.o(.text+0x3819):/usr/src/sys/dev/usb/storage/umass.c:3004: undefined reference to `xpt_done' umass.o(.text+0x39bf):/usr/src/sys/dev/usb/storage/umass.c:2994: undefined reference to `xpt_done' umass.o(.text+0x3a07):/usr/src/sys/dev/usb/storage/umass.c:2982: undefined reference to `xpt_done' umass.o(.text+0xdfa):/usr/src/sys/dev/usb/storage/umass.c:3325: more undefined references to `xpt_done' follow *** Error code 1 Stop in /usr/ GOOGLE找到答案，原来是我在配置文件里含入了 device umass 却没有按照后面的注释含入 device scbus device da 解决方法是直接将umass 也给它注释掉 重新build，成功! # make installkernel KERNCONF=MY_KERNEL_CONF 搞定，重启 察看内核版本： uname -i $ uname -i MY_KERNEL 然后上网、登录SSH、VNC、读光盘等等都没有问题 |
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