From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Seiderer Date: Mon, 18 Nov 2019 23:42:38 +0100 Subject: [Buildroot] [PATCH 1/2] package/gmpc: needs -lm In-Reply-To: References: <20191029214046.14722-1-fontaine.fabrice@gmail.com> <20191108220442.4b596996@windsurf> <20191108222841.4ff8debf@gmx.net> <20191117212001.6907f54a@gmx.net> <20191117214818.4d68ae6f@gmx.net> Message-ID: <20191118234238.363e7c04@gmx.net> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: buildroot@busybox.net Hello *, On Sun, 17 Nov 2019 21:54:38 +0100, Arnout Vandecappelle wrote: > On 17/11/2019 21:48, Peter Seiderer wrote: > > Hello *, > > > > On Sun, 17 Nov 2019 21:20:01 +0100, Peter Seiderer wrote: > > > >> Hello Arnout, > >> > >> On Sun, 17 Nov 2019 20:45:19 +0100, Arnout Vandecappelle wrote: > >> > >>> On 08/11/2019 22:28, Peter Seiderer wrote: > >>>> Hello Fabrice, Thomas, > >>>> > >>>> On Fri, 8 Nov 2019 22:04:42 +0100, Thomas Petazzoni wrote: > >>>> > >>>>> On Tue, 29 Oct 2019 22:40:45 +0100 > >>>>> Fabrice Fontaine wrote: > >>>>> > >>>>>> gmpc forgets to link with -lm: > >>>>>> > >>>>>> /home/buildroot/autobuild/instance-2/output-1/host/opt/ext-toolchain/bin/../lib/gcc/mips-linux-gnu/5.3.0/../../../../mips-linux-gnu/bin/ld: GmpcVolume.o: undefined reference to symbol 'ceil@@GLIBC_2.0' > >>>>>> /home/buildroot/autobuild/instance-2/output-1/host/mips64el-buildroot-linux-gnu/sysroot/soft-float/el/lib64/libm.so.6: error adding symbols: DSO missing from command line > >>>>>> > >>>>>> Fixes: > >>>>>> - http://autobuild.buildroot.org/results/a79e0487135ad90530595d5c6ecc32f9c8cea7c4 > >>>>>> > >>>>>> Signed-off-by: Fabrice Fontaine > >>>>> > >>>>> We need to understand why this is happening now. This package has not > >>>>> been modified since July 2017, but suddenly, on October 21, 2019, it > >>>>> started failing like this. Why? Was there a change in one of the > >>>>> dependencies, that is no longer linked with libm, and that causes this > >>>>> problem ? > >>> > >>> It started because of RELRO, I think. > >>> > >>>> > >>>> Maybe the same cause/problem as in the libv4l case regarding libatomic, > >>>> evaluating vs. not evaluationg the *.la files (see [1])? > >>> > >>> And this one because of PIC_PIE. > >> > >> Any hints to one/more related commits (so I can check by reverting if it > >> changes/fix the problems)? > >> > >> Are the RELRO/PIC_PIE options related to evaluating *.la files? > > > > Did a quick search by the date (October 21, 2019) and the info from the libv4l > > case [1] and would suspect the commit 'pkgconf: Add pkgconf system lib and > > include path' [2], will do a test with this commit reverted.... > > Good point. Also there's a failure without PIC_PIE or RELRO [3]. Can confirm, reverting [2] fixes the libv4l and the gmpc linking problems... Regards, Peter > > Regards, > Arnout > > > > > Regards, > > Peter > > > > [2] https://git.buildroot.net/buildroot/commit/?id=9cc8680fe54c0b8f5008158e36e2157127f03a7e > > [3] > http://autobuild.buildroot.net/results/e7f/e7f37080c20e2131613517c3007b4569c28dbcf2 > > > > > >> > >> Regards, > >> Peter > >> > >>> > >>> Regards, > >>> Arnout > >>> > >>>> > >>>> Regards, > >>>> Peter > >>>> > >>>> [1] http://lists.busybox.net/pipermail/buildroot/2019-October/264928.html > >>>> > >>>>> > >>>>> I think I already asked this in the past: when you fix an issue, don't > >>>>> just fix the issue, but explain why the issue is happening, especially > >>>>> in situations like these. > >>>>> > >>>>> Thanks! > >>>>> > >>>>> Thomas > >>>> > >>>> _______________________________________________ > >>>> buildroot mailing list > >>>> buildroot at busybox.net > >>>> http://lists.busybox.net/mailman/listinfo/buildroot > >>>> > >>> _______________________________________________ > >>> buildroot mailing list > >>> buildroot at busybox.net > >>> http://lists.busybox.net/mailman/listinfo/buildroot > >> > >> _______________________________________________ > >> buildroot mailing list > >> buildroot at busybox.net > >> http://lists.busybox.net/mailman/listinfo/buildroot > > > _______________________________________________ > buildroot mailing list > buildroot at busybox.net > http://lists.busybox.net/mailman/listinfo/buildroot