Gnutls & libgcrypt - Debian VS Redhat ?

[bythelight]

Hello

This:

#include <gnutls.h>
#include <gcrypt.h>
#include <errno.h>
#include <pthread.h>
GCRY_THREAD_OPTION_PTHREAD_IMPL;

int main()
{
/* The order matters.
*/
gcry_control (GCRYCTL_SET_THREAD_CBS, &gcry_threads_pthread);
gnutls_global_init();
}


Compiles flawlessly on debian 5 64bit..

However, on Cent OS 5 64 bit..
With an identical setup and gcc produces:

[root@localhost code]# gcc -lpthread test.cpp -O -lgnutls -lssl -lcurl -pthread
test.cpp: In function int gcry_pthread_mutex_init(void**):
test.cpp:5: error: malloc was not declared in this scope
test.cpp:5: error: free was not declared in this scope
test.cpp: In function int gcry_pthread_mutex_destroy(void**):
test.cpp:5: error: invalid conversion from void* to pthread_mutex_t*
test.cpp:5: error: initializing argument 1 of int pthread_mutex_destroy(pthread_mutex_t*)
test.cpp:5: error: free was not declared in this scope
test.cpp: In function int gcry_pthread_mutex_lock(void**):
test.cpp:5: error: invalid conversion from void* to pthread_mutex_t*
test.cpp:5: error: initializing argument 1 of int pthread_mutex_lock(pthread_mutex_t*)
test.cpp: In function int gcry_pthread_mutex_unlock(void**):
test.cpp:5: error: invalid conversion from void* to pthread_mutex_t*
test.cpp:5: error: initializing argument 1 of int pthread_mutex_unlock(pthread_mutex_t*)
[root@localhost code]#

Might anyone be able to shed any light on what and why,
I need to get this rectified.