VM装的Fedora9.编译环境是arm-linux-gcc 4.3.2。开发板友善之臂micro2440.
首先我把micro2440-20100609.iso里面的\OpenSourceBootloader\u-boot-1.1.6-FA24x0.tar.gz。cp到工作目录，然后tar，然后进入工作目录的u-boot-1.1.6。
make smdk2410_config，然后make all。编译出错。注：我未对文件作任何修改！
而在几个月前，我装的是red hat。当时make smdk2410_config，然后make all生产u-boot.bin是没有问题的，板子也能跑，少了很多功能，但是好歹能启动啊。后来因为我重装系统，改成了fedora，就不行了。
最开始的时候报错为：
In file included from /root/mylab/uboot/bootloader/u-boot-1.1.6/include/nand.h:29,
from cmd_menu.c:9:
/root/mylab/uboot/bootloader/u-boot-1.1.6/include/linux/mtd/nand.h:412: error: 'NAND_MAX_CHIPS' undeclared here (not in a function)
cmd_menu.c:61: warning: function declaration isn't a prototype
cmd_menu.c: In function 'param_menu_shell':
cmd_menu.c:77: warning: unused variable 'val_buf'
cmd_menu.c:76: warning: unused variable 'name_buf'
cmd_menu.c: In function 'menu_shell':
cmd_menu.c:184: warning: implicit declaration of function 'bBootFrmNORFlash'
cmd_menu.c:285: warning: passing argument 2 of 'memsize_parse2' from incompatible pointer type
cmd_menu.c:173: warning: unused variable 'mtd'
cmd_menu.c:172: warning: unused variable 'offset'
make[1]: *** [cmd_menu.o] Error 1
make[1]: Leaving directory `/root/mylab/uboot/bootloader/u-boot-1.1.6/common'
make: *** [common/libcommon.a] Error 2
然后我到nand.h去看，结果'NAND_MAX_CHIPS' 果然没有，于是我加上了#define NAND_MAX_CHIPS 1，只有一块nand_flash嘛。
继续make smdk2410_config，然后make all。又报错：
make[1]: Leaving directory `/root/mylab/uboot/u-boot-1.1.6/common'
UNDEF_SYM=`arm-linux-objdump -x lib_generic/libgeneric.a board/smdk2410/libsmdk2410.a cpu/arm920t/libarm920t.a cpu/arm920t/s3c24x0/libs3c24x0.a lib_arm/libarm.a fs/cramfs/libcramfs.a fs/fat/libfat.a fs/fdos/libfdos.a fs/jffs2/libjffs2.a fs/reiserfs/libreiserfs.a fs/ext2/libext2fs.a net/libnet.a disk/libdisk.a rtc/librtc.a dtt/libdtt.a drivers/libdrivers.a drivers/nand/libnand.a drivers/nand_legacy/libnand_legacy.a drivers/usb/libusb.a drivers/sk98lin/libsk98lin.a common/libcommon.a |sed -n -e 's/.*\(__u_boot_cmd_.*\)/-u\1/p'|sort|uniq`;\
cd /root/mylab/uboot/u-boot-1.1.6 && arm-linux-ld -Bstatic -T /root/mylab/uboot/u-boot-1.1.6/board/smdk2410/u-boot.lds -Ttext 0x33F80000 $UNDEF_SYM cpu/arm920t/start.o \
--start-group lib_generic/libgeneric.a board/smdk2410/libsmdk2410.a cpu/arm920t/libarm920t.a cpu/arm920t/s3c24x0/libs3c24x0.a lib_arm/libarm.a fs/cramfs/libcramfs.a fs/fat/libfat.a fs/fdos/libfdos.a fs/jffs2/libjffs2.a fs/reiserfs/libreiserfs.a fs/ext2/libext2fs.a net/libnet.a disk/libdisk.a rtc/librtc.a dtt/libdtt.a drivers/libdrivers.a drivers/nand/libnand.a drivers/nand_legacy/libnand_legacy.a drivers/usb/libusb.a drivers/sk98lin/libsk98lin.a common/libcommon.a --end-group -L /usr/local/arm/4.3.2/bin/../lib/gcc/arm-none-linux-gnueabi/4.3.2/armv4t -lgcc \
-Map u-boot.map -o u-boot
cpu/arm920t/start.o: In function `stack_setup':
/root/mylab/uboot/u-boot-1.1.6/cpu/arm920t/start.S:193: undefined reference to `clock_init'
cpu/arm920t/start.o: In function `relocate':
/root/mylab/uboot/u-boot-1.1.6/cpu/arm920t/start.S:207: undefined reference to `CopyCode2Ram'
common/libcommon.a(cmd_menu.o): In function `menu_shell':
/root/mylab/uboot/u-boot-1.1.6/common/cmd_menu.c:184: undefined reference to `bBootFrmNORFlash'
make: *** [u-boot] Error 1
这个问题为啥我就不清楚了，我更不清楚的是为啥好好的，换个系统就不行了，比如第一次那个错误，我换我的系统不至于把NAND_MAX_CHIPS换没了吧？呃，我承认我很郁闷，请高手解惑！
