On Mon, Dec 24, 2001 at 12:08:13PM -0500, Jason Costomiris wrote:
> On Mon, Dec 24, 2001 at 11:25:31PM +0800, David wrote:
> : I have written some multithreading code using pthread library. But when I
> : compile the code, the compiling process is ok but the linking process claims
> : "undefined reference" for pthread_create( ). How can I resolve this problem?
> : I have included <pthread.h> and #define _REENTRANT but still doesn't work. I
> : suspect the library libpthread.so is bad but having replaced that file with
> : another one from Mandrake 8.0 (the file sizes are different), it
> : still doesn't compile. Can anyone help me with this one? Thanks.
>
> You're not linking against the pthread library. You want to do something
> like:
>
> gcc -O2 foo.c -o foo -lpthread
Actually, no LInux (and this is POORLY documented) you want to do:
gcc -O2 -pthread foo.c -o foo
The -pthread flag forces both reentrancy, and linking of libpthread.
You may find it helpful to start subscribing to comp.programming.threads.
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