I'm trying to build my own uClibc embedded system. I encountered some problems, but after 2 days, I solved all of them. Only one is remaining: pthread doesnt work correctly.
Here is simple program, from python's configure script:
#include <pthread.h>
void* routine(void* p){return NULL;}
int main(){
pthread_t p;
if(pthread_create(&p,NULL,routine,NULL)!=0)
return 1;
(void)pthread_detach(p);
return 0;
}
On my glibc-based system, it runs and then exits. But on my uclibc-based system, it runs, ends threads and freezes:
[Thread debugging using libthread_db enabled]
[New Thread 0x801 (LWP 17631)]
[New Thread 0x402 (LWP 17632)]
[Thread 0x402 (LWP 17632) exited]
[Thread 0x801 (LWP 17631) exited]
^C
Program received signal SIGINT, Interrupt.
0xb7f768e7 in sigsuspend () from /lib/libc.so.0
I tried both old and new linuxthreads, none of them worked. Do you have an idea?
Edit:
OK, I found some more info:
#include <pthread.h>
#include <stdio.h>
void* routine(void* p){printf("AAA!\n");return NULL;}
int main(){
pthread_t p;
pthread_create(&p,NULL,&routine,NULL);
printf("BBB!");
(void)pthread_detach(p);
pthread_exit(0);
exit(0);
}
prints only "AAA!", then freezes (glibc system prints both "AAA!" and "BBB!" in random order). So I think there must be some error in uclibc pthreads itself. Any other help? Tried some other pthread tests and each of them freezes in the end. Edit: I didnt find out why is this hapenning, but I copied precompiled uclibc and it works now.
