From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark H Weaver Subject: bug#19973: Grafts break debug outputs Date: Sun, 01 Mar 2015 00:24:57 -0500 Message-ID: <874mq570ie.fsf@netris.org> References: <878ufh71do.fsf@netris.org> Mime-Version: 1.0 Content-Type: text/plain Return-path: Received: from eggs.gnu.org ([2001:4830:134:3::10]:45508) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YRwNH-0006c5-Ti for bug-guix@gnu.org; Sun, 01 Mar 2015 00:25:13 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YRwNC-0001R6-Ql for bug-guix@gnu.org; Sun, 01 Mar 2015 00:25:07 -0500 Received: from debbugs.gnu.org ([140.186.70.43]:57439) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YRwNC-0001Qc-N4 for bug-guix@gnu.org; Sun, 01 Mar 2015 00:25:02 -0500 Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1YRwNC-0006EM-Cs for bug-guix@gnu.org; Sun, 01 Mar 2015 00:25:02 -0500 Sender: "Debbugs-submit" Resent-Message-ID: In-Reply-To: <878ufh71do.fsf@netris.org> (Mark H. Weaver's message of "Sun, 01 Mar 2015 00:06:11 -0500") List-Id: Bug reports for GNU Guix List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-guix-bounces+gcggb-bug-guix=m.gmane.org@gnu.org Sender: bug-guix-bounces+gcggb-bug-guix=m.gmane.org@gnu.org To: 19973@debbugs.gnu.org Mark H Weaver writes: > Grafts break debug outputs, or at least that's my guess. > Here's what I see: > > mhw@jojen:~$ guix build guile > guix build: warning: ambiguous package specification `guile' > guix build: warning: choosing guile-2.0.11 from gnu/packages/guile.scm:110:2 > /gnu/store/3lhr8q28q6f59774di9av7ncy09jd55d-guile-2.0.11 > /gnu/store/rgv3fvy6xqp6966rfh8v6fv7m48abcbh-guile-2.0.11-debug > mhw@jojen:~$ guix package -I guile > guile 2.0.11 out /gnu/store/3lhr8q28q6f59774di9av7ncy09jd55d-guile-2.0.11 > guile 2.0.11 debug /gnu/store/rgv3fvy6xqp6966rfh8v6fv7m48abcbh-guile-2.0.11-debug > mhw@jojen:~$ ls -l .guix-profile/lib/debug/gnu/store/ > total 8 > lrwxrwxrwx 12 root guixbuild 128 Dec 31 1969 > 122jv790mv2mlnylbrbzav65vghbw93n-guile-2.0.11 -> > /gnu/store/rgv3fvy6xqp6966rfh8v6fv7m48abcbh-guile-2.0.11-debug/lib/debug/gnu/store/122jv790mv2mlnylbrbzav65vghbw93n-guile-2.0.11 > lrwxrwxrwx 15 root guixbuild 127 Dec 31 1969 > 3g20rdmnavpblsmgppyl8jhg67nidhjk-glibc-2.20 -> > /gnu/store/hrny2whqg9c3m0klyfpbmmcyiir9yf8m-gcc-toolchain-4.9.2/lib/debug/gnu/store/3g20rdmnavpblsmgppyl8jhg67nidhjk-glibc-2.20 > > I guess GDB can't find the debugging information because > 122jv790mv2mlnylbrbzav65vghbw93n-guile-2.0.11 is the name of the guile > directory *before* grafting. > > To work around this, I created my own ~/mydebug directory: > > mhw@jojen:~/mydebug/gnu/store$ ln -s > /gnu/store/rgv3fvy6xqp6966rfh8v6fv7m48abcbh-guile-2.0.11-debug/lib/debug/gnu/store/122jv790mv2mlnylbrbzav65vghbw93n-guile-2.0.11 > 3lhr8q28q6f59774di9av7ncy09jd55d-guile-2.0.11 > > and then pointed GDB at ~/mydebug and then debugging works again. I've since discovered that because our grafting is not done properly, for now we need symbolic links for both the pre-grafted and post-grafted directories. I installed libgc:debug and then created a proper symlink in ~/mydebug, but because our guile is still linked against the pre-grafted libgc, we need a symbolic link with the pre-grafted name. So here's what I have now: mhw@jojen:~/mydebug/gnu/store$ ls -l total 12 lrwxrwxrwx 1 mhw mhw 128 Mar 1 00:00 3lhr8q28q6f59774di9av7ncy09jd55d-guile-2.0.11 -> /gnu/store/rgv3fvy6xqp6966rfh8v6fv7m48abcbh-guile-2.0.11-debug/lib/debug/gnu/store/122jv790mv2mlnylbrbzav65vghbw93n-guile-2.0.11 lrwxrwxrwx 1 mhw mhw 126 Mar 1 00:18 h6byyxpii73xlbhiq5lxfq3n6qzqwsif-libgc-7.4.2 -> /gnu/store/k0xjv8l196j4nxgbz8dxz6xz7kbysaix-libgc-7.4.2-debug/lib/debug/gnu/store/zshjm1ilbzz0z0zpxr17h13jnmilga7l-libgc-7.4.2 lrwxrwxrwx 1 mhw mhw 126 Mar 1 00:21 zshjm1ilbzz0z0zpxr17h13jnmilga7l-libgc-7.4.2 -> /gnu/store/k0xjv8l196j4nxgbz8dxz6xz7kbysaix-libgc-7.4.2-debug/lib/debug/gnu/store/zshjm1ilbzz0z0zpxr17h13jnmilga7l-libgc-7.4.2 Mark