From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-437180-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 16523 invoked by alias); 10 Dec 2013 11:58:33 -0000
Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Id: <gcc-bugs.gcc.gnu.org>
List-Archive: <http://gcc.gnu.org/ml/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-help@gcc.gnu.org>
Sender: gcc-bugs-owner@gcc.gnu.org
Received: (qmail 16507 invoked by uid 48); 10 Dec 2013 11:58:29 -0000
From: "rose.garcia-eggl2fk at yopmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/59447] New: --with-dwarf2 is not propagated correctly, will always create dwarf4 by default
Date: Tue, 10 Dec 2013 11:58:00 -0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: bootstrap
X-Bugzilla-Version: 4.8.2
X-Bugzilla-Keywords:
X-Bugzilla-Severity: normal
X-Bugzilla-Who: rose.garcia-eggl2fk at yopmail dot com
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags:
X-Bugzilla-Changed-Fields: bug_id short_desc product version bug_status bug_severity priority component assigned_to reporter
Message-ID: <bug-59447-4@http.gcc.gnu.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 7bit
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
X-SW-Source: 2013-12/txt/msg00835.txt.bz2

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59447

            Bug ID: 59447
           Summary: --with-dwarf2 is not propagated correctly, will always
                    create dwarf4 by default
           Product: gcc
           Version: 4.8.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
          Assignee: unassigned at gcc dot gnu.org
          Reporter: rose.garcia-eggl2fk at yopmail dot com

even if one manages that --with-dwarf2 gets properly redirected to
gcc/configure from the toplevel configure script ( i used

        GCC_DWARF_CONFFLAGS="--with-dwarf2=yes" ;
        export host_configargs="$GCC_DWARF_CONFFLAGS" ;
        export target_configargs="$GCC_DWARF_CONFFLAGS" ;
        export build_configargs="$GCC_DWARF_CONFFLAGS" ;

plus i passed it to top-level configure), gcc will still default to DWARF4, and
all created binaries will have dwarf4 debug info, unless -gdwarf-2 was passed
explicitly on the command line.

the culprit is this line
gcc-4.8.2/gcc/common.opt:Common Joined UInteger Var(dwarf_version) Init(4)
Negative(gstabs)

introduced in commit 
http://repo.or.cz/w/official-gcc.git/commitdiff/052166fd4a8051c7dc4c87d408be091c99aafd55

note that even the command below still talks about dwarf2.
i see nothing in the build system that would fill in the required 2 here
instead of the 4, and indeed the generated options.c has dwarf_version = 4 in
it.