工具链问题

prince

mips工具链编译信号处理函数的时候提示找不到backtrace 和 backtrace_symbols这两个函数
但在X86下和arm工具链下都可以编译通过，这是为什么呢
#include <execinfo.h>
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <unistd.h>
void print_bt()
{
void *array[10];
size_t size;
char **strings;
size_t i;

size = backtrace (array, 10);  
strings = backtrace_symbols (array, size); 
printf ("*****Obtained %zd stack frames.*****\n", size);  

for (i = 0; i < size; i++)  
printf ("%s\n", strings[i]); 
free (strings);

}
void dump(int signo)
{
printf("[Program received signal SIGSEGV, Segmentation fault.id=%d]\n", signo);
print_bt();
exit(0);
}
void fun3()
{
print_bt();
}

void fun2()
{
fun3();
}

void fun1()
{
fun2();
}

int main(int argc, char *argv[])
{
signal(SIGSEGV, &dump);
signal(SIGABRT, &dump);
fun1();

return 0;

}
[2_1498296416434_signel.cpp](正在上传 100%) [1_1498296416433_Makefile.build](正在上传 100%) [0_1498296416432_Makefile](正在上传 100%)