[yuri@darklight:~]> cat test.c
#include <ldap.h>

int main(void) {
        LDAP    *ld = NULL;

        ld = ldap_init ("127.0.0.1", 3128);

        return 0;
}
[yuri@darklight:~]> gcc -Wall -I/usr/local/include -L/usr/local/lib -lldap -o test test.c
test.c: In function 'main':
test.c:6: warning: implicit declaration of function 'ldap_init'
test.c:6: warning: assignment makes pointer from integer without a cast