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Re: [arch-general] Changing compilation flags
by Jordan Glover 06 Jul '17

06 Jul '17

I just looked into it and created simple patch. Anyone could test it and/or submit upstream? Index: include/clang/Driver/Options.td --- include/clang/Driver/Options.td +++ include/clang/Driver/Options.td @@ -2497,6 +2497,7 @@ defm non_call_exceptions : BooleanFFlag<"non-call-exceptions">, Group<clang_ignored_f_Group>; defm peel_loops : BooleanFFlag<"peel-loops">, Group<clang_ignored_gcc_optimization_f_Group>; defm permissive : BooleanFFlag<"permissive">, Group<clang_ignored_f_Group>; +defm plt : BooleanFFlag<"plt">, Group<clang_ignored_f_Group>; defm prefetch_loop_arrays : BooleanFFlag<"prefetch-loop-arrays">, Group<clang_ignored_gcc_optimization_f_Group>; defm printf : BooleanFFlag<"printf">, Group<clang_ignored_f_Group>; defm profile : BooleanFFlag<"profile">, Group<clang_ignored_f_Group>; Index: test/Driver/clang_f_opts.c --- test/Driver/clang_f_opts.c +++ test/Driver/clang_f_opts.c @@ -275,12 +275,14 @@ // RUN: -fno-fat-lto-objects -ffat-lto-objects \ // RUN: -fno-merge-constants -fmerge-constants \ // RUN: -fno-caller-saves -fcaller-saves \ +// RUN: -fno-plt \ // RUN: -fno-reorder-blocks -freorder-blocks \ // RUN: -fno-schedule-insns2 -fschedule-insns2 \ // RUN: -fno-stack-check \ // RUN: -fno-check-new -fcheck-new \ // RUN: -ffriend-injection \ // RUN: -fno-implement-inlines -fimplement-inlines \ +// RUN: -fplt \ // RUN: -fstack-check \ // RUN: -fforce-addr \ // RUN: -malign-functions=100 \ > -------- Original Message -------- > Subject: Re: [arch-dev-public] Changing compilation flags > From: arch-dev-public(a)archlinux.org > To: Evangelos Foutras <evangelos(a)foutrelis.com> > Daniel Micay <danielmicay(a)gmail.com>, Public mailing list for Arch Linux development <arch-dev-public(a)archlinux.org> >> So I think it would be a good idea to flip the default to -z,now in >> the >> linker if we"re going to use -fno-plt. I think they"d take a patch for >> that upstream. Clang issue could be avoided with a 1 line patch adding >> another no-op flag and they"d take that upstream. It"s harmless to use >> the slower lazy linking calling convention when -fno-plt is passed. > This is literally just +1 LOC for Clang b/c it has a system for adding > no-op flags already, which is mostly used for GCC compatibility. > It even uses it in cases that are quite dubious like making -fstack- > check into a no-op, despite it not just being an optional optimization / > code generation change like -fno-plt.

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[arch-general] systemd on bios computer
by Jude DaShiell 05 Jul '17

05 Jul '17

When doing a systemd upgrade I get: (3/7) Upgrading systemd-boot... Couldn't find EFI system partition. It is recommended to mount it to /boot. Alternatively, use --path= to specify path to mount point. error: command failed to execute correctly Are either of the above alternatives even viable for a real bios machine? This one got built when efi was somewhere on the drawing board or maybe before efi ever got to the drawing board. --

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[arch-general] Sébastien Luttringer and Tobias Powalowski
by User 03 Jul '17

03 Jul '17

Sébastien Luttringer, https://git.archlinux.org/svntogit/packages.git/commit/trunk?h=packages/btr… , https://www.kernel.org/pub/linux/kernel/people/kdave/btrfs-progs/sha256sums…, https://lists.archlinux.org/pipermail/arch-general/2016-December/042700.html . Tobias Powalowski, https://git.archlinux.org/svntogit/packages.git/commit/trunk?h=packages/hdp… , i waited and no one said anything all this time. you do not help each other.

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[arch-general] Dave Reisner and Gaetan Bisson
by User 02 Jul '17

02 Jul '17

Dave Reisner, replace git:// with git+https:// in the systemd pkgbuild file, this should have been done the previous year. Gaetan Bisson, revert https://git.archlinux.org/svntogit/packages.git/commit/trunk?h=packages/gnu…, stop doing dumb things.

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Re: [arch-general] Changing compilation flags
by Alexander Harrigan 01 Jul '17

01 Jul '17

On On Sat, Jul 1, 2017 at 09:54 AM, arch-general <arch- general@archlinux.org> wrote: > >On 2016-10-24 05:56, Allan McRae wrote: > >*> 1) building gcc to enable PIE by default > *> > >I am in the middle of rebuilding gcc with --enable-default-pie. When it > >finishes, I will start a todo for rebuilding packages with static libraries. > > > >I also enabled --enable-default-ssp, which means that > >-fstack-protector-strong will be dropped from our CFLAGS (as it will be > >enforced by gcc) on the next opportunity. > > > >Bartłomiej > > Does the -enable-default-ssp enforce also -fstack-check=specific to protect > from stack clash [1], gentoo do it (except on vlc and tcl which not build > but those are upstream bugs) [2] > > [1] https://blog.qualys.com/securitylabs/2017/06/19/the-stack-clash > [2] https://wiki.gentoo.org/wiki/Hardened/Gentoo_Hardened_and_Stack_Clash > > *Pablo Lezaeta* > No it doesn't but original plan [1] was to enable -fstack-check, -fno-plt and -z,now to default flags in makepkg.conf. I hope Pacman maintainer will add those before mass rebuild started so everythig will be done at once. [1] https://lists.archlinux.org/pipermail/arch-dev- public/2016-October/028405.html \-- Sent using MsgSafe.io's Free Plan Private, encrypted, online communication For everyone. https://www.msgsafe.io

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[arch-general] Changing compilation flags
by Pablo Roberto Lezaeta Reyes 01 Jul '17

01 Jul '17

>On 2016-10-24 05:56, Allan McRae wrote: >*> 1) building gcc to enable PIE by default *> >I am in the middle of rebuilding gcc with --enable-default-pie. When it >finishes, I will start a todo for rebuilding packages with static libraries. > >I also enabled --enable-default-ssp, which means that >-fstack-protector-strong will be dropped from our CFLAGS (as it will be >enforced by gcc) on the next opportunity. > >Bartłomiej Does the -enable-default-ssp enforce also -fstack-check=specific to protect from stack clash [1], gentoo do it (except on vlc and tcl which not build but those are upstream bugs) [2] [1] https://blog.qualys.com/securitylabs/2017/06/19/the-stack-clash [2] https://wiki.gentoo.org/wiki/Hardened/Gentoo_Hardened_and_Stack_Clash *Pablo Lezaeta*

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[arch-general] [Classroom] The Beginner's Guide to Arch Linux package management
by Eli Schwartz 28 Jun '17

28 Jun '17

Eschwartz will be teaching a class "The Beginner's Guide to Arch Linux package management". As usual, the class will be taught in the #archlinux-classroom channel on irc.freenode.net. It will take place on Sunday, June 4 at 17:00:00 UTC, and last approximately 2 hours. This class is primarily focused on teaching the basic structure of PKGBUILDs: how to read/write/modify them, handle different source types, common errors and how to avoid them, and finally contribute them to the AUR for others to use. Everyone is welcome to join, as long as you follow the eminently fair rules in https://wiki.archlinux.org/index.php/Code_of_conduct. :) Prerequisites: * Have a basic knowledge of bash and shell commands in general. * The ability to use a text editor (e.g., nano, vim, emacs, gedit, Atom, etc.) Eschwartz is well known for his profusion of posts to the Arch Linux Fora, Mailing Lists, bugtracker, and IRC -- basically, anywhere that doesn't shut the door on him first. He has been an Arch user ever since he was introduced to Linux about four years ago, and has never looked back. He enjoys bash scripting, ebooks, and (apparently) referring to himself in third-person. -- Eli Schwartz

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[arch-general] Scrot update removed few option
by Dragon ryu 28 Jun '17

28 Jun '17

Newest scrot update removed few option. Is it nessecerry update from upstream?

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[arch-general] That terminal in gnome will launch.
by matthew dyer 28 Jun '17

28 Jun '17

Hi all, For some strange ofeason, anon me terminal does not load either when search for it or selectable it in application ns Is there a way to fix this without having to rest stall Arch. Is there something I am doingwrong? I am using gnome 3.24 with all updates as of today. Thanks again for the help. Matthew D

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[arch-general] Kde + Gnome dual-install issues
by Francesco Porro 28 Jun '17

28 Jun '17

I'm a quite new user of Arch and in general I'm very satisfied with it! Since I've installed both Kde/Plasma and Gnome on my system, I've two question for you: 1) In a Gnome session, which file should I edit to make folders on my Desktop open with Nautilus, when I double click on them? I've tried checking and editing ~/config/mimefiles.list (as stated in the wiki) but the right settings is already there. Under [Default applications] there is: > inode/directory=org.gnome.Nautilus.desktop; Which it's supposed to let Nautilus open a folder on double clicking, but anyway Dolphin opens it up! I've also put a gnome-mimefiles.list with the same directive... nothing :\ 2) In a Kde/Plasma session I see a lot of gnome-* process running, even if didn't opened any gnome-related app. How to disable the auto-start of those deamons/apps? I don't know exactly where to look at, which is the right conf file to edit? Thank you in advance! -- fp PGP: 0x45399C26

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