编译 U-boot-1.1.0 的问题

mrbbsp

想移植U-boot
书上说，找个好编译的，看能成功不，我选了 smdk2400
编译时出现了错误：

/usr/local/arm/bin/../lib/gcc-lib/arm-linux/3.2/../../../../arm-linux/bin/ld: cannot find -lfloat

我的交叉编译工具为：cross-3.2
goole了一下，貌似我的工具链缺某某，怎么搞定呢？


编译时的详细信息如下：

Configuring for smdk2400 board...
[root@localhost u-boot-1.1.0]# make
make[1]: Entering directory `/home/lnight/Bootloader/u-boot-1.1.0/tools'
make[1]: `.depend' is up to date.
make[1]: Leaving directory `/home/lnight/Bootloader/u-boot-1.1.0/tools'
make[1]: Entering directory `/home/lnight/Bootloader/u-boot-1.1.0/examples'
make[1]: `.depend' is up to date.
make[1]: Leaving directory `/home/lnight/Bootloader/u-boot-1.1.0/examples'
make[1]: Entering directory `/home/lnight/Bootloader/u-boot-1.1.0/post'
make[1]: `.depend' is up to date.
make[1]: Leaving directory `/home/lnight/Bootloader/u-boot-1.1.0/post'
make[1]: Entering directory `/home/lnight/Bootloader/u-boot-1.1.0/post/cpu'
make[1]: `.depend' is up to date.
make[1]: Leaving directory `/home/lnight/Bootloader/u-boot-1.1.0/post/cpu'
make -C tools all
make[1]: Entering directory `/home/lnight/Bootloader/u-boot-1.1.0/tools'
gcc -g -Wall -pedantic -I../include -I.. -DTEXT_BASE=0x0CF80000 -DUSE_HOSTCC -O -c envcrc.c
gcc -g  -I../include -I.. -DTEXT_BASE=0x0CF80000 -DUSE_HOSTCC -c environment.c
gcc -Wall -pedantic -I../include -I.. -DTEXT_BASE=0x0CF80000 -DUSE_HOSTCC -O -o envcrc envcrc.o crc32.o environment.o
make[1]: Leaving directory `/home/lnight/Bootloader/u-boot-1.1.0/tools'
make -C examples all
make[1]: Entering directory `/home/lnight/Bootloader/u-boot-1.1.0/examples'
arm-linux-gcc -g  -Os   -fno-strict-aliasing  -fno-common -ffixed-r8 -mshort-load-bytes -msoft-float -D__KERNEL__ -DTEXT_BASE=0x0CF80000 -I/home/lnight/Bootloader/u-boot-1.1.0/include -fno-builtin -ffreestanding -nostdinc -isystem /usr/local/arm/bin/../lib/gcc-lib/arm-linux/3.2/include -pipe  -DCONFIG_ARM -D__ARM__ -mapcs-32 -march=armv4 -Wall -Wstrict-prototypes -g  -Os   -fno-strict-aliasing  -fno-common -ffixed-r8 -mshort-load-bytes -msoft-float -D__KERNEL__ -DTEXT_BASE=0x0CF80000 -I/home/lnight/Bootloader/u-boot-1.1.0/include -fno-builtin -ffreestanding
-nostdinc -isystem /usr/local/arm/bin/../lib/gcc-lib/arm-linux/3.2/include -pipe  -DCONFIG_ARM -D__ARM__ -mapcs-32 -march=armv4 -I.. -Bstatic -T /home/lnight/Bootloader/u-boot-1.1.0/board/smdk2400/u-boot.lds -Ttext 0x0CF80000   hello_world.c   -o hello_world
/usr/local/arm/bin/../lib/gcc-lib/arm-linux/3.2/../../../../arm-linux/bin/ld: cannot find -lfloat
collect2: ld returned 1 exit status
make[1]: *** [hello_world] Error 1
make[1]: Leaving directory `/home/lnight/Bootloader/u-boot-1.1.0/examples'

xd.su

在make前，

执行make  depend试试

mrbbsp

看了几篇别人移植 U-boot 的贴
发现有位在 make  ***_config 前执行了   make  clobber 语句
我也执行了，好了！

错误原因至今没搞懂……还是日后研究。

感谢楼上建议，下次遇到同类问题试   make depend   先.