Date: Fri, 27 Jun 2003 01:51:58 -0700 From: Marcel Moolenaar <marcel@xcllnt.net> To: Ruslan Ermilov <ru@FreeBSD.org> Cc: threads@FreeBSD.org Subject: Re: Obsoleting libc_r: How to create compat links Message-ID: <20030627085158.GA42350@dhcp01.pn.xcllnt.net> In-Reply-To: <20030627080550.GA48342@sunbay.com> References: <20030627075607.GA42198@dhcp01.pn.xcllnt.net> <20030627080550.GA48342@sunbay.com>
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On Fri, Jun 27, 2003 at 11:05:50AM +0300, Ruslan Ermilov wrote:
> Funny thing: reading your commit mail, and right after that
> receiving this message. :-)
>
> On Fri, Jun 27, 2003 at 12:56:07AM -0700, Marcel Moolenaar wrote:
> > [Ruslan added for his insights]
> >
> > Ok,
> >
> > I decided to obsolete libc_r on ia64 so that I can de-pessimize the
> > setjmp/longjmp code some time before 5.2 and have sufficient time to
> > deal with problems due to not having libc_r.
> >
> > One thing we probably want to do is create compatibility links from
> > libc_r* to libthr* or libkse*. At this time I libthr is tested on
> > ia64, so I opt to have libc_r linked to libthr. What's the best way
> > to do that, so that it can be used for other platforms in due time?
> >
> First off, symlinking won't help old binaries that were linked
> dynamically with libc_r.so.X, but you're supposed to well know
> that already. :-)
Correct. I'm not worried about compatibility with previous releases
and the likes, because ia64 is still tier 2. I want "cc -pthread"
to work.
> So, the only useful option that is left is to symlink the static
> and dymanic libraries (.a and .so, but not .so.X), and this can
> be done in libc_r/Makefile using SYMLINKS (for MACHINE_ARCH of
> ia64 only).
In libc_r/Makefile? Aren't we going to build libc_r first and then
overwrite the intalled libc_r with symlinks?
What about:
Index: Makefile
===================================================================
RCS file: /home/ncvs/src/lib/libthr/Makefile,v
retrieving revision 1.3
diff -u -r1.3 Makefile
--- Makefile 23 May 2003 09:48:20 -0000 1.3
+++ Makefile 27 Jun 2003 08:49:54 -0000
@@ -10,6 +10,13 @@
LIB=thr
SHLIB_MAJOR= 1
DEBUG_FLAGS=-g
+
+.if ${MACHINE_ARCH} == "ia64"
+SYMLINKS= libthr.a ${SHLIBDIR}/libc_r.a \
+ libthr.so ${SHLIBDIR}/libc_r.so \
+ libthr_p.a ${SHLIBDIR}/libc_r_p.a
+.endif
+
CFLAGS+=-DPTHREAD_KERNEL -D_THREAD_SAFE
CFLAGS+=-I${.CURDIR}/../libc/include -I${.CURDIR}/thread \
-I${.CURDIR}/../../include
--
Marcel Moolenaar USPA: A-39004 marcel@xcllnt.net
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