From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.org/gmane.linux.lib.musl.general/7917 Path: news.gmane.org!not-for-mail From: Rich Felker Newsgroups: gmane.linux.lib.musl.general Subject: Re: C++ questions Date: Tue, 9 Jun 2015 16:25:50 -0400 Message-ID: <20150609202550.GP17573@brightrain.aerifal.cx> References: <20150605215616.GF10927@port70.net> 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 1433881571 14423 80.91.229.3 (9 Jun 2015 20:26:11 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 9 Jun 2015 20:26:11 +0000 (UTC) To: musl@lists.openwall.com Original-X-From: musl-return-7930-gllmg-musl=m.gmane.org@lists.openwall.com Tue Jun 09 22:26:06 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 1Z2Q61-0008Jx-VL for gllmg-musl@m.gmane.org; Tue, 09 Jun 2015 22:26:06 +0200 Original-Received: (qmail 24287 invoked by uid 550); 9 Jun 2015 20:26:04 -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 24269 invoked from network); 9 Jun 2015 20:26:03 -0000 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) Original-Sender: Rich Felker Xref: news.gmane.org gmane.linux.lib.musl.general:7917 Archived-At: On Tue, Jun 09, 2015 at 04:17:11PM -0400, John Mudd wrote: > On Fri, Jun 5, 2015 at 5:56 PM, Szabolcs Nagy wrote: > > > * John Mudd [2015-06-05 17:34:52 -0400]: > > > Error loading shared library ld-linux.so.2: No such file or directory > > > (needed by /usr/lib/i386-linux-gnu/libstdc++.so.6) > > > > > > > create an empty ld-linux.so.2 > > > > gcc -o ld-linux.so.2 -xc -shared - > > > (nowadays toolchains sometimes add the dynamic linker to > > elf DT_NEEDED, i dont know why, it's not really needed) > > > > > I looked at the notes about C++ in the musl faqs. For that I decided it > > > might help if I built gcc in musl. Then everything will be musl-ized? I > > > built gmp, mpfr and mpc. Started building gcc but got the following > > error. > > > > > > /home/mudd/musl/gcc-4.9.2.obj/gcc/../../gcc-4.9.2/gcc/plugin.c:579: > > > undefined reference to `dlopen' > > > > > > > you have to patch gcc and use certain options to make it work > > > > musl-cross build scripts take care of if > > (there are prebuilt toolchains too) > > > > > Before I go further, any opinions if I'm even headed in the right > > direction? > > > > you may get away without building > > Thanks again. Adding the empty ld-linux.so.2 helped. I also had to > add libgcc_s.so.1 and the following _chk stubs. > > http://pastebin.com/TeieBKCE New ABI compat coming up soon (hopefully in the next release) will eliminate the need to add these yourself -- and the ones we add will actually perform the correct overflow/etc. checks. Rich