From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.org/gmane.linux.lib.musl.general/7538 Path: news.gmane.org!not-for-mail From: Alexander Monakov Newsgroups: gmane.linux.lib.musl.general Subject: Re: [PATCH] force LTO to be disabled when compiling dlstart.lo Date: Tue, 28 Apr 2015 11:45:25 +0300 (MSK) Message-ID: References: <1430201554-11359-1-git-send-email-armccurdy@gmail.com> Reply-To: musl@lists.openwall.com NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Trace: ger.gmane.org 1430210746 23486 80.91.229.3 (28 Apr 2015 08:45:46 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 28 Apr 2015 08:45:46 +0000 (UTC) Cc: musl@lists.openwall.com To: Andre McCurdy Original-X-From: musl-return-7551-gllmg-musl=m.gmane.org@lists.openwall.com Tue Apr 28 10:45:46 2015 Return-path: Envelope-to: gllmg-musl@m.gmane.org Original-Received: from mother.openwall.net ([195.42.179.200]) by plane.gmane.org with smtp (Exim 4.69) (envelope-from ) id 1Yn198-00080X-OU for gllmg-musl@m.gmane.org; Tue, 28 Apr 2015 10:45:38 +0200 Original-Received: (qmail 11713 invoked by uid 550); 28 Apr 2015 08:45:37 -0000 Mailing-List: contact musl-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: Original-Received: (qmail 11692 invoked from network); 28 Apr 2015 08:45:37 -0000 In-Reply-To: User-Agent: Alpine 2.11 (LNX 23 2013-08-11) Xref: news.gmane.org gmane.linux.lib.musl.general:7538 Archived-At: On Tue, 28 Apr 2015, Alexander Monakov wrote: > For reference, with GCC 4.9 that uses linker plugin for LTO automatically, I > get the following diagnostics: > > /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.2/../../../../x86_64-pc-linux-gnu/bin/ld: > error: /tmp/ccxxkwJ8.ltrans0.ltrans.o: requires dynamic R_X86_64_PC32 reloc > against '_dlstart_c' which may overflow at runtime; recompile with -fPIC > /tmp/ccxxkwJ8.ltrans0.ltrans.o(.text+0x12): error: undefined reference to > '_dlstart_c' Hm, I've just noticed Andre was using gcc 4.9.2 as well. I get the same diagnostics with BFD linker -- the diagnostics above are produced when using the Gold linker. Rich, do gold diagnostics help to see what musl might be doing to confuse symbols dependencies resolution? Alexander