From owner-freebsd-current  Fri Jan  7 17: 9:15 2000
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Date: Fri, 7 Jan 2000 17:08:27 -0800
From: Jason Evans <jasone@canonware.com>
To: Luoqi Chen <luoqi@watermarkgroup.com>
Cc: current@FreeBSD.ORG
Subject: Re: __sigisempty() undefined if "cc -g" used.
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References: <200001080036.TAA05054@lor.watermarkgroup.com>
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In-Reply-To: <200001080036.TAA05054@lor.watermarkgroup.com>; from luoqi@watermarkgroup.com on Fri, Jan 07, 2000 at 07:36:11PM -0500
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On Fri, Jan 07, 2000 at 07:36:11PM -0500, Luoqi Chen wrote:
> > In an effort to chase down a libc_r bug, I compiled libc_r with CFLAGS=-g
> > (and later CFLAGS=-g3), but ran into linker problems as a result.
> > 
> > blitz:~> gcc poll.c -pthread
> > /usr/lib/libc_r.so: undefined reference to `__sigisempty'
> > 
> > Even the simplest of C programs will get this linker error if using the
> > -pthread option.
> > 
> > So, __sigisempty is an inline function, defined in
> > /usr/include/sys/signalvar.h:
> > 
> > extern __inline int
> > __sigisempty(sigset_t *set)
> > {
> > 	int i;
> > 
> > 	for (i = 0; i < _SIG_WORDS; i++) {
> > 	    if (set->__bits[i])
> > 		return (0);
> > 		}
> > 		return (1);
> > }
> > 
> It doesn't make much sense to have an "extern" inline function, gcc probably
> was confused by this, change "extern" to "static" and try again.

Yep, that fixed it.  Thanks!

I just committed the change.

Jason


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