Hisi海思交叉编译iperf3,提示undefined reference to `__ctype_tolower' __ctype_b

配置方法：

 ./configure --host=arm-hisiv200-linux CFLAGS=-static --enable-static LDFLAGS=-static --disable-shared

出现提示后，在main.c中定义

static int run(struct iperf_test *test);

#include
__const unsigned short int *__ctype_b;
__const __int32_t *__ctype_tolower;
__const __int32_t *__ctype_toupper;
void ctSetup()
{
__ctype_b = *(__ctype_b_loc());
__ctype_toupper = *(__ctype_toupper_loc());
__ctype_tolower = *(__ctype_tolower_loc());
}

在main()函数中执行一下：

main(int argc, char **argv)
{
    struct iperf_test *test;
   
    ctSetup();

然后还有2，3个文件编译时候会提示__ctype错误。哪个提示错误在哪个文件中做如下定义：

extern __const unsigned short int *__ctype_b;
extern __const __int32_t *__ctype_tolower;
extern __const __int32_t *__ctype_toupper;