Hi! Manolis has hit this issue again, <http://news.gmane.org/find-root.php?message_id=%3CCAFtzXzNgS8KEwRJO74SF7zZPMnwFkW_m1qvir6y7-WNwaKEsWQ%40mail.gmail.com%3E>.
On Tue, 4 Mar 2014 02:40:12 +0100, Samuel Thibault <samuel.thiba...@gnu.org> wrote: > Roland McGrath, le Mon 03 Mar 2014 15:36:52 -0800, a écrit : > > > Roland McGrath, le Fri 20 Dec 2013 13:05:42 -0800, a ,Aicrit : > > > > The linker is supposed to define those symbols automagically. > > > > Did it break? > > > > > > We have been having > > > > > > $,1r| > > > checking for sufficient default -shared layout... no > > > > What does this have to do with anything? > > It is what makes the Makefile choose between using the empty > shlib-lds/shlib-lds-flags or using the explicit shlib.lds file. > > > Are you saying that the linker does not define __start_* and __stop_* > > symbols automagically when it's given a custom linker script? > > It seems libc's __start_* and __stop_* symbols get defined automagically > indeed. This however doesn't happen for libpthread apparently: > > /usr/src/eglibc-2.18/build-tree/hurd-i386-libc/libpthread/libpthread_pic.a(pt-initialize.os): > In function `__pthread_init': > /usr/src/eglibc-2.18/libpthread/./pthread/pt-initialize.c:77: undefined > reference to `__stop___pthread_init' > /usr/bin/ld.bfd.real: > /usr/src/eglibc-2.18/build-tree/hurd-i386-libc/libpthread/libpthread_pic.a(pt-initialize.os): > relocation R_386_GOTOFF against undefined hidden symbol > `__stop___pthread_init' can not be used when making a shared object > > Now I'm wondering why for instance __start/stop___libc_atexit are > specified. This comes from Ulrich's “Place __libc_subfreeres, > __libc_atexit, and __libc_thread_subfreeres sections after .jcr > section.”. I don't know what this is really useful for. In my current GCC work, I have just hit what seems to be a similar (the same?) issue: <http://news.gmane.org/find-root.php?message_id=%3C87lhvjhl6e.fsf%40kepler.schwinge.homeip.net%3E>. Will try to have a look at this next week. Grüße, Thomas
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