linker - Using pthread in c++

Question

I am using pthread.h in a *.cc file. when I try to use pthread_exit(0); or pthread_join(mythrds[yy],NULL); it says:

.cc:(.text+0x3e): undefined reference to `pthread_exit'

when complied very similar code in a *.c file with gcc it work perfect. How Can I use pthread's in c++.. (I also added -lpthread)

..
void *myThreads ( void *ptr )
{
...
pthread_exit(0); 
}
..

flags:

g++ -lpthread -Wall -static -W -O9 -funroll-all-loops -finline -ffast-math

Answer 1

You might try using the -pthread option to g++.

   -pthread
       Adds support for multithreading with the pthreads library.  This
       option sets flags for both the preprocessor and linker.