Help : Threads in AIX

[Swaminathan, Sangeetha (Cognizant)]

Hi:

I have  CDoc.h and CDoc.C.
My CDoc.h has #include<pthread.h>, and a member variable pthread_mutex_t
mutex;

In CDoc.C,
The constructor has pthread_mutex_init(&mutex, NULL);
and MyFunction() calls: pthread_mutex_lock (&mutex); and
pthread_mutex_unlock(&mutex);
and the destructor calls pthread_mutex_destroy(&mutex);

I am able to compile CDoc.C and generate a CDoc.o
But when I create a libCDoc.so (a shared object) from the CDoc.o, I get
these errors:

ld: 0711-317 ERROR: Undefined symbol: .pthread_mutex_init
ld: 0711-317 ERROR: Undefined symbol: .pthread_mutex_destroy
ld: 0711-317 ERROR: Undefined symbol: .pthread_mutex_lock
ld: 0711-317 ERROR: Undefined symbol: .pthread_mutex_unlock

However, in another case: Main.h and Main.C where I don't define any classes
(I used the other classes already defined):
I create threads, and use the above thread functions as well. I don't get
the error. But I don't builb a .so also.

What could be the problem??

Please help!!

Thanks in advance..

Sangeetha Swaminathan

Ph: 811 3063 * 2253

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