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From: "slyfox at inbox dot ru" <sourceware-bugzilla@sourceware.org>
To: elfutils-devel@sourceware.org
Subject: [Bug general/23914] New: Add --disable-werror to ./configure support (example trigger:  CFLAGS=-Og
Date: Fri, 23 Nov 2018 16:29:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D23914

            Bug ID: 23914
           Summary: Add --disable-werror to ./configure support (example
                    trigger:  CFLAGS=3D-Og
           Product: elfutils
           Version: unspecified
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: general
          Assignee: unassigned at sourceware dot org
          Reporter: slyfox at inbox dot ru
                CC: elfutils-devel at sourceware dot org
  Target Milestone: ---

Initially I attempted to reproduce https://bugs.gentoo.org/671650 on vanilla
master on elfutils as:

    $ autoreconf -i -f &&   ./configure --disable-maintainer-mode CFLAGS=3D=
-Og &&
  make && make check

The problem is in unconditional -Werror addition in
    config/eu.am:       $(if $($(*F)_no_Werror),,-Werror) \

May I ask to add --disable-werror support to ./configure? That way elfutils
will be less dependent on exact toolchain version and compiler flags
(specifically warning flags).

Example failure:

  dwarf_child.c: In function '__libdw_find_attr':
  dwarf_child.c:99:10: error: 'readp' may be used uninitialized in this
function [-Werror=3Dmaybe-uninitialized]
    readp +=3D len;
          ^~

Today Gentoo crudely works it around by sed'ing out -Werror at build time:
=20=20=20
https://gitweb.gentoo.org/repo/gentoo.git/tree/dev-libs/elfutils/elfutils-0=
.175.ebuild#n34
        sed -i 's:-Werror::' */Makefile.in || die

Thanks!

--=20
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