编译binutil包报错 error: array type has incomplete element type extern const struct relax_type md_relax_table[];

安装lfs时编译binutils出错：

../../sources/binutils-2.15.91.0.2/gas/config/tc-i386.h:457:32: error: array type has incomplete element type
extern const struct relax_type md_relax_table[];
^
make[3]: *** [app.o] Error 1
make[3]: Leaving directory `/mnt/lfs/binutils-build/gas'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/mnt/lfs/binutils-build/gas'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/mnt/lfs/binutils-build/gas'
make: *** [all-gas] Error 2

按照报错信息修改../../sources/binutils-2.15.91.0.2/gas/config/tc-i386.h 中457行的extern const struct relax_type md_relax_table[];为extern const struct relax_type * md_relax_table;

再把../../sources/binutils-2.15.91.0.2/gas/config/tc-i386.c中373行的const relax_typeS md_relax_table[]改成const struct relax_type *md_relax_table;