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[75.166.102.22]) by smtp.gmail.com with ESMTPSA id h16sm131661qtx.23.2021.08.03.15.59.38 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 03 Aug 2021 15:59:39 -0700 (PDT) Subject: Re: Failures building glibc with mainline GCC To: Joseph Myers , Segher Boessenkool References: <033b535d-8adc-bb82-dff5-4e6d1d357358@gmail.com> <60297d58-80ed-105b-b020-c86ae5e7867c@gmail.com> <20210803205029.GT1583@gate.crashing.org> Message-ID: <3651625e-7409-882b-cfe1-21eb4e60f1cf@gmail.com> Date: Tue, 3 Aug 2021 16:59:37 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.2 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Martin Sebor via Libc-alpha Reply-To: Martin Sebor Cc: GCC Mailing List , Martin Sebor , libc-alpha@sourceware.org Errors-To: libc-alpha-bounces+e=80x24.org@sourceware.org Sender: "Libc-alpha" On 8/3/21 3:00 PM, Joseph Myers wrote: > On Tue, 3 Aug 2021, Segher Boessenkool wrote: > >> On Tue, Aug 03, 2021 at 10:20:49AM -0600, Martin Sebor via Gcc wrote: >>> On 8/3/21 9:54 AM, Joseph Myers wrote: >>>> As discussed, this is a bug indicating that the code generating that >>>> warning fails to check targetm.addr_space.zero_address_valid to determine >>>> whether zero or small constant addresses are valid in the given address >>>> space. >>> >>> Yes, we know about that one. What I'm asking for is the translation >>> units with the other warnings you showed with the latest GCC (including >>> the threader patches) on the other targets (including i686 and power). >>> I don't have an easy way to create them using my setup. >> >> But you do have a cfarm account :-) > > And build-many-glibcs.py is designed to be self-contained (depending only > on the Python 3 standard library and basic native compilation tools), so > having got a copy from a glibc checkout, you can do (given /some/where as > the directory in which you want build-many-glibcs.py to do its checkouts > and builds): > > build-many-glibcs.py /some/where checkout gcc-vcs-mainline > /some/where/src/glibc/scripts/build-many-glibcs.py /some/where host-libraries > /some/where/src/glibc/scripts/build-many-glibcs.py --keep=failed /some/where compilers i686-gnu powerpc-linux-gnu powerpc64-linux-gnu > > which will check out all the sources needed to build glibc, using mainline > GCC, build the GMP/MPFR/MPC host libraries needed by GCC, then build cross > toolchains for the three listed targets, keeping the build directories > around for build stages that fail (in this case, the glibc build for those > targets). > Thanks for the instructions. I assumed that the purpose of these automated builders and testers was to help us quickly find and more easily root cause problems without each of us having to do builds on all these targets ourselves. If asking for translation units to go with the problems your testers uncover is an imposition I apologize. In that event, I would suggest to submit bug reports in Bugzilla instead with the usual details attached there. Martin