所有GDB版本，交叉编译均会出现类似问题
Makefile:490: recipe for target ‘gdb.info’ failed
make[4]: *** [gdb.info] Error 127
make[4]: Leaving directory ‘/home/book/nfs_rootfs/gdb-10.2/gdb/doc’
Makefile:1963: recipe for target ‘subdir_do’ failed
make[3]: *** [subdir_do] Error 1
make[3]: Leaving directory ‘/home/book/nfs_rootfs/gdb-10.2/gdb’
Makefile:1613: recipe for target ‘all’ failed
make[2]: *** [all] Error 2
make[2]: Leaving directory ‘/home/book/nfs_rootfs/gdb-10.2/gdb’
Makefile:10399: recipe for target ‘all-gdb’ failed
make[1]: *** [all-gdb] Error 2
make[1]: Leaving directory ‘/home/book/nfs_rootfs/gdb-10.2’
Makefile:853: recipe for target ‘all’ failed
make: *** [all] Error 2