Bug 369973

Summary:	net-p2p/rtorrent - libsub_root.a(thread_base.o):thread_base.cc:function ThreadBase::start_thread(): error: undefined reference to 'pthread_create'
Product:	Gentoo Linux	Reporter:	Diego Elio Pettenò (RETIRED) <flameeyes>
Component:	Current packages	Assignee:	Jason Zaman <perfinion>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	naota, net-p2p
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---
Bug Depends on:	522706
Bug Blocks:	372079
Attachments:	Build log proposed patch ebuild patch

Description Diego Elio Pettenò (RETIRED) gentoo-dev

2011-06-03 21:37:09 UTC

Created attachment 275741 [details]
Build log

Hello there!

You're getting this bug because the package in Summary failed to build in my tinderbox using the gold link editor from binutils. Before closing the bug as INVALID let me explain why this is still important!

The gold link editor does not support underlinking of shared objects, which is something I have described in my blog post:

http://blog.flameeyes.eu/2010/11/26/it-s-not-all-gold-that-shines-why-underlinking-is-a-bad-thing

Even the basic link editor (ld.bfd) has an option to support this but it is a heck to enable and get passed, so linking with gold is simply quicker.

Fixing underlinking provides optimized --as-needed builds (because the "softer" version no longer need to recover libraries that are underlinked), so it is a Good Thing To Do.

Thank you very much for the attention!

Comment 1 Naohiro Aota gentoo-dev

2011-09-06 05:13:30 UTC

Created attachment 285685 [details, diff]
proposed patch

This patch detect pthread and set CXXFLAGS and LIBS accordingly. The patch depends on /usr/share/aclocal/ax_pthread.m4 from sys-devel/autoconf-archive

Comment 2 Naohiro Aota gentoo-dev

2011-09-06 05:18:27 UTC

Created attachment 285687 [details, diff]
ebuild patch

Comment 3 Pacho Ramos gentoo-dev

2016-08-18 08:38:39 UTC


*** This bug has been marked as a duplicate of bug 364913 ***