Date: Sun, 30 Jan 2000 01:47:25 -0900 From: Russ Pagenkopf <jnrp@uas.alaska.edu> To: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: ld-elf problem Message-ID: <38941695.305A442A@uas.alaska.edu> References: <3891FE4E.BBC95985@uas.alaska.edu> <38920C42.C8E098C0@slk.com>
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Back again...
Douglas Brian Quayle wrote:
>
> pthread_attr_setscope() is a function used by Posix threads. I am guessing
> you do not have Pthread support compiled into your kernel, though I could
> be wrong.
You're right, I didn't, so I followed the instructions below.
> In your kernel configuration file, do you have the following three lines?
>
> options "P1003_1B"
> options "_KPOSIX_PRIORITY_SCHEDULING"
> options "_KPOSIX_VERSION=199309L"
>
> Try adding these three lines and rebuilding the kernel
> (config -r KERNEL; cd ../../compile/KERNEL; make depend; make; make
> install).
Ok, did this, and ...
One more time I get,
/usr/libexec/ld-elf.so.1: ./CGServer: Undefined symbol "pthread_attr_setscope"
when I try to run the program.
So a little more digging through the list archives and I find this,
"we already have threading support (minus pthread cancel) compile/link with
gcc -pthread"
So a little digging through the man pages for cc (ie. gcc) gets me this,
"-pthread
Link a user-threaded process against libc_r instead
of libc. Objects linked into user-threaded process-
es should be compiled with -D_THREAD_SAFE."
So, go back and "make depend" and "make" and peruse the screen output and I
see several different options added to cc which brings me to the next
question. How do I add the -pthread option when I'm making the kernel? I've
dug through the Makefiles and I can't figure out how to do this.
Thanks for the help,
Russ Pagenkopf
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