Date: Wed, 11 Feb 2004 16:11:07 +0100 (CET) From: marcov@stack.nl (Marco van de Voort) To: freebsd-ports@freebsd.org Subject: Re: How to determine which pthread, was: Re: last libc_rdependenciesleft on current Message-ID: <20040211151107.9CD75172@toad.stack.nl> In-Reply-To: <20040211012314.GA44192@xor.obsecurity.org> "from Kris Kennaway at Feb 10, 2004 05:23:14 pm"
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> On Tue, Feb 10, 2004 at 11:36:25PM +0100, Marco van de Voort wrote:
> >
> >
> > lang/fpc-devel (and to a lesser degree lang/fpc) are not libc_r dependant
> > themselves, but generate libc_r programs when language threading is used.
> >
> > I'll fix this in the coming weeks, but rather like to do this runtime.
> >
> > How can I detect (in a non C/libc program, iow without using headers or
> > libraries, so in the general FreeBSD environment), whether I should pass
> > -lc_r to the linker or -lc -lpthread ?
> > (sysctl or uname based solutions come to mind)
>
> Look at how bsd.port.mk decides.
.if ${OSVERSION} < 500016
PTHREAD_CFLAGS?= -D_THREAD_SAFE
PTHREAD_LIBS?= -pthread
.elif ${OSVERSION} < 502102
PTHREAD_CFLAGS?= -D_THREAD_SAFE
PTHREAD_LIBS?= -lc_r
.else
PTHREAD_CFLAGS?=
PTHREAD_LIBS?= -lpthread
.endif
Thnx, this is doable.
What does the -D_THREAD_SAFE mean? (I mean does it mean that libc isn't
thread safe, that it is thread_safe etc etc, or does it interact with the
C code that is being compiled (the port))
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