Re: [gentoo-dev] Mozilla, pthread libs, and Gentoo/FreeBSD.

[Timothy Redaelli]

Javier Villavicencio wrote:
> Timothy Redaelli wrote:
>> Javier Villavicencio wrote:
>>> Hello,
>>>
>>> A bit of background first:
>>> Currently firefox-2* and seamonkey-1.1.1 doesn't build on
>>> Gentoo/FreeBSD. The main reason is that upstream (I think) has 'fixed'
>>> how the pthread lib has to be linked, and now it needs -lc to link
>>> successfully. This little issue is easily solvable the same way as it's
>>> done by the FreeBSD ports patches [1].
>>>
>>> The next issue (having the above one fixed) is that the resulting binary
>>> (firefox or seamonkey's -bin) is linked against libc_r.so.6 *and*
>>> libpthread.so.2 (which are two of the thread implementations available
>>> in FreeBSD).
>>
>> No, actual firefox-bin is only linked with libpthread.so.2 (directly
>> with -lpthread)
>> # wget
>> ftp://ftp.freebsd.org/pub/FreeBSD/ports/i386/packages-6-stable/Latest/firefox.tbz
>>
>> # mkdir firefox ; tar xjf firefox.tbz -C firefox
>> # scanelf -nR . | grep c_r
>>
> Nice to know, by the way i was talking about g/fbsd there not vanilla
> freebsd. (I don't have an install yet, i was using a friend's server to
> try some gcc tests).
>
> BUT!!, why 'our' mozilla tries to link against libc_r.so.6 then? afaics
> we do not touch the 'selection' of the threading library, and i haven't
> seen anything besides the GECKO_PTHREADS_LIBS, and even if I pass that
> variable (with -lpthread) to make our build still uses libc_r.so.6.
> And why the only way to make it work is by remapping libpthread.so.2 to
> libc_r.so.6, or (as I have experimented) by removing libpthread.so.2
> from the linkage? Or is this also being done in some wrapper on vanilla
> fbsd?
>
> Besides this, what's your suggestion? make all mozilla ebuilds patch
> accordingly to avoid libc_r and use libpthread alone?

Yeah, we should do such as FreeBSD
<snip>
	@${REINPLACE_CMD} -e 's|-lc_r|${PTHREAD_LIBS}|g ; \
</snip>
http://www.freebsd.org/cgi/cvsweb.cgi/~checkout~/ports/www/mozilla/Makefile.common

-- 
Timothy `Drizzt` Redaelli - http://dev.gentoo.org/~drizzt/
FreeSBIE Developer, Gentoo Developer, GUFI Staff
There are two major products that come out of Berkeley: LSD and UNIX.
We don't believe this to be a coincidence.      -- Jeremy S. Anderson