Re: pthread in Cygwin? (attempt to build ghostscript 6.5)

["Robert Collins" <robert dot collins at itdomain dot com dot au>]

----- Original Message -----
From: "Wei Ku" <weiku@physics.ucdavis.edu>
To: <cygwin@cygwin.com>
Sent: Friday, March 30, 2001 11:37 AM
Subject: pthread in Cygwin? (attempt to build ghostscript 6.5)


> Hello,
>
> In the last step of building ghostscript 6.5 (after some minor
modifications
> in a few places) I encountered the following error message:
>
> (while gcc -fno-common -o ./bin/gs ./obj/gs.o ./obj/gp_getnv.o ...)
>
> ./obj/gp_psync.o(.text+0x49):gp_psync.c: undefined reference to
> `pthread_cond_init'
> ./obj/gp_psync.o(.text+0x7a):gp_psync.c: undefined reference to
> `pthread_cond_destroy'
> ./obj/gp_psync.o(.text+0xda):gp_psync.c: undefined reference to
> `pthread_cond_wait'
> ./obj/gp_psync.o(.text+0x148):gp_psync.c: undefined reference to
> `pthread_cond_signal'
> ./obj/gp_psync.o(.text+0x28e):gp_psync.c: undefined reference to
> `pthread_attr_setdetachstate'
>
> I have /usr/include/pthread.h but can not find libpthread.a anywhere.
Any
> help is appreciated.
>
> Wei Ku
>

Condition variations aren't implemented in the current 1.1.8-2 release
of cygwin. Try the latest snapshot.

I've implemented pthread_attr_setdetachstate, but I think it's bundled
in with a patch that affects newlib so it's not available yet. See
http://sources.redhat.com/ml/cygwin/2001-03/msg01202.html for a clean
workaround.

Note: if your "minor" modificationsincluded defining macros or
prototypes to replace system functions that aren't present, I'm not
surprised you got these link errors.

Rob


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