From mboxrd@z Thu Jan 1 00:00:00 1970 From: Efraim Flashner Subject: Re: Why is GCL built with gcc@4.9? Date: Sun, 16 Dec 2018 09:37:54 +0200 Message-ID: <20181216073754.GC3468@macbook41> References: <87k1ke81b9.fsf@netris.org> <20181213203348.GA3468@macbook41> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="3siQDZowHQqNOShm" Return-path: Received: from eggs.gnu.org ([2001:4830:134:3::10]:47489) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gYR04-0006qy-3F for guix-devel@gnu.org; Sun, 16 Dec 2018 02:38:08 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gYQzy-00053e-5u for guix-devel@gnu.org; Sun, 16 Dec 2018 02:38:07 -0500 Received: from flashner.co.il ([178.62.234.194]:34020) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gYQzu-0004xw-T6 for guix-devel@gnu.org; Sun, 16 Dec 2018 02:38:00 -0500 Content-Disposition: inline In-Reply-To: <20181213203348.GA3468@macbook41> List-Id: "Development of GNU Guix and the GNU System distribution." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guix-devel-bounces+gcggd-guix-devel=m.gmane.org@gnu.org Sender: "Guix-devel" To: Mark H Weaver Cc: guix-devel@gnu.org --3siQDZowHQqNOShm Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Dec 13, 2018 at 10:33:48PM +0200, Efraim Flashner wrote: > On Thu, Dec 13, 2018 at 12:03:59AM -0500, Mark H Weaver wrote: > > Hi Efraim, > >=20 > > I'm curious about this commit of yours from April 2017: > >=20 > > --8<---------------cut here---------------start------------->8--- > > commit 5c7815f205e9164d4b82378de91bee7a65bcfbcb > > Author: Efraim Flashner > > Date: Mon Apr 10 05:20:09 2017 +0300 > >=20 > > gnu: gcl: Build with gcc@4.9. > > =20 > > * gnu/packages/lisp.scm (gcl)[native-inputs]: Add gcc@4.9. > > --8<---------------cut here---------------end--------------->8--- > >=20 > > Do you remember why you did this? There's no explanation in the > > comments, nor in the commit log, nor in the 'bug-guix' or 'guix-devel' > > email archives from around that time. > >=20 > > I'd like to remove it, and I've verified that on x86_64-linux, GCL > > builds successfully with the default compiler. > >=20 > > In general, it would be good to include comments with rationale for > > workarounds like this, so that we have some idea of when the workaround > > can be removed, and what tests we must do to ensure that the original > > problem has been addressed. > >=20 > > Thanks, > > Mark >=20 > I looked through the commits and I'm not sure why I added gcc@4.9. When > did we change our default gcc from 4.9 to 5? I've made one attempt so > far at building on aarch64-linux without gcc@4.9 and I got a core-dump > but I haven't built it recently to see if it does that as-is. >=20 > I'll take a closer look at it and try to see what's up. >=20 I tried compiling gcl with gcc@7 also and it still failed on aarch64. The closest I have to a clue is that Debian's rule file has commented out to use gcc@4.6, so I'm guessing that following our upgrade to building with gcc@5 the package broke and it worked for a time with gcc@4.9. Since it fails to build in any case on aarch64 and building with gcc@5 doesn't cause any problems I'll go ahead and remove it. --=20 Efraim Flashner =D7=90=D7=A4=D7=A8=D7=99=D7=9D = =D7=A4=D7=9C=D7=A9=D7=A0=D7=A8 GPG key =3D A28B F40C 3E55 1372 662D 14F7 41AA E7DC CA3D 8351 Confidentiality cannot be guaranteed on emails sent or received unencrypted --3siQDZowHQqNOShm Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEoov0DD5VE3JmLRT3Qarn3Mo9g1EFAlwWAM4ACgkQQarn3Mo9 g1FH5g/+Oclhe9VnuScpWFJxkPNQ3SDd3GDShR+CI/tSONVmrBnBwUhjB+k4xhbl vN0xYA2dQpYOvPGEqCsyEUqvwYsrNXVPqtP7a86XW4CS0W3ZOtxnzfL269nzcuI9 aOFfOckL9LOvronLgei+nFmZzZD3QDCjUBihg6+dsi35IamdT3kNcJPCZfBjH3m6 q92TRdDQ5E2dOwOFwrjmpCEamshN25L8itDNKT6tWHypRg7PvfucPbWWT1dvWSyJ T1ldAABmYT2la968R1cH3gvpXPizgsGAcv2pMb86EzXZV9W8UeTkB7dxTL0RUHxO s9GfbKWyEQomRf7snwZtiZ8Thuz7RN9ruhg7koXYXlmJV0k24UjO3J+2y53WZhH/ aaxK9rYyElx7JMSvBOO3fRy09jPJI/aATPEvDDwRiNuhWbpj3OZUR/Xpq62gMG7S Uh1oOibfsNpenUDODizA3wdebToKmXvyKRhphqLUVTxXPuXasntm63GS9YnKwldl JshU8Ttse3jgUx6zlDhuMeyEuWCfGfwClGashx1qdHfDoWpPbvATfEdw2oqWThNG XJUwZiAruTN/RMhvHKoHVxiEwy8tzgr/OuZI1QT92Z2JgnkNHjI6k6A3VOLQUSh3 ybjbNRsKzSDRiP8DxHQC0aGST+63KeHvppNGjMEd0wC2aFMZYxc= =wQdY -----END PGP SIGNATURE----- --3siQDZowHQqNOShm--