编译arm-elf时出错

[rayfox]

说我没有cru命令，请问怎么安装？

[rayfox]

cru lib.a lib_a-dummy.o lib_a-argz_add.o lib_a-argz_add_sep.o lib_a-argz_append.o lib_a-argz_count.o lib_a-argz_create.o lib_a-argz_create_sep.o lib_a-argz_delete.o lib_a-argz_extract.o lib_a-argz_insert.o lib_a-argz_next.o lib_a-argz_replace.o lib_a-argz_stringify.o lib_a-buf_findstr.o lib_a-envz_entry.o lib_a-envz_get.o lib_a-envz_add.o lib_a-envz_remove.o lib_a-envz_merge.o lib_a-envz_strip.o
make[5]: cru：命令未找到
make[5]: *** [lib.a] 错误 127
make[5]: Leaving directory `/home/rayfox/arm-tools-src/newlib-1.15.0/arm-elf/newlib/libc/argz'
make[4]: *** [all-recursive] 错误 1
make[4]: Leaving directory `/home/rayfox/arm-tools-src/newlib-1.15.0/arm-elf/newlib/libc'
make[3]: *** [all-recursive] 错误 1
make[3]: Leaving directory `/home/rayfox/arm-tools-src/newlib-1.15.0/arm-elf/newlib'
make[2]: *** [all] 错误 2
make[2]: Leaving directory `/home/rayfox/arm-tools-src/newlib-1.15.0/arm-elf/newlib'
make[1]: *** [all-target-newlib] 错误 2
make[1]: Leaving directory `/home/rayfox/arm-tools-src/newlib-1.15.0'
make: *** [all] 错误 2
这是我编译NewLib时候出的错误，请大家帮帮我。

[rayfox]

问题解决了,呵呵,是我的错,没有设置ARM-ELF-GCC的路径
我的
export PATH=$PATH:/usr/local/gnuarm/bin