From owner-dev-commits-src-all@freebsd.org Mon Apr 12 14:44:48 2021 Return-Path: Delivered-To: dev-commits-src-all@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 4F4CD5D3B54; Mon, 12 Apr 2021 14:44:48 +0000 (UTC) (envelope-from kp@FreeBSD.org) Received: from smtp.freebsd.org (smtp.freebsd.org [IPv6:2610:1c1:1:606c::24b:4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "smtp.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4FJs2m1npwz4YH7; Mon, 12 Apr 2021 14:44:48 +0000 (UTC) (envelope-from kp@FreeBSD.org) Received: from venus.codepro.be (venus.codepro.be [5.9.86.228]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mx1.codepro.be", Issuer "R3" (verified OK)) (Authenticated sender: kp) by smtp.freebsd.org (Postfix) with ESMTPSA id 14DEE216EA; Mon, 12 Apr 2021 14:44:48 +0000 (UTC) (envelope-from kp@FreeBSD.org) Received: by venus.codepro.be (Postfix, authenticated sender kp) id 75E72269C2; Mon, 12 Apr 2021 16:44:46 +0200 (CEST) From: "Kristof Provost" To: "Shawn Webb" Cc: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: Re: git: 0dd13c77432a - main - libnv: Build PIC Date: Mon, 12 Apr 2021 16:44:45 +0200 X-Mailer: MailMate (1.13.2r5673) Message-ID: <508CFCEE-2639-451E-B98C-42DD3DC1B4D7@FreeBSD.org> In-Reply-To: <20210412144010.lcv7swa5ob3eql6m@mutt-hbsd> References: <202104100916.13A9GMOp069019@gitrepo.freebsd.org> <20210410152754.4isx26qyvz6k3qbo@mutt-hbsd> <98C59789-AF1F-4B88-B814-F0BD359A06BD@FreeBSD.org> <20210412144010.lcv7swa5ob3eql6m@mutt-hbsd> MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: quoted-printable X-BeenThere: dev-commits-src-all@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Commit messages for all branches of the src repository List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 12 Apr 2021 14:44:48 -0000 On 12 Apr 2021, at 16:40, Shawn Webb wrote: > On Mon, Apr 12, 2021 at 01:39:50PM +0200, Kristof Provost wrote: >> On 10 Apr 2021, at 17:27, Shawn Webb wrote: >>> On Sat, Apr 10, 2021 at 09:16:22AM +0000, Kristof Provost wrote: >>>> The branch main has been updated by kp: >>>> >>>> URL: = >>>> https://cgit.FreeBSD.org/src/commit/?id=3D0dd13c77432ade1ae94c9661cb= ad5537e3e6ab1d >>>> >>>> commit 0dd13c77432ade1ae94c9661cbad5537e3e6ab1d >>>> Author: Kristof Provost >>>> AuthorDate: 2021-04-02 15:06:02 +0000 >>>> Commit: Kristof Provost >>>> CommitDate: 2021-04-10 09:16:01 +0000 >>>> >>>> libnv: Build PIC >>>> >>>> Build libnv as position independent code so we can use it from >>>> shared >>>> libraries. >>>> >>>> MFC after: 4 weeks >>>> Sponsored by: Rubicon Communications, LLC ("Netgate") >>>> Differential Revision: https://reviews.freebsd.org/D29561 >>>> --- >>>> lib/libnv/Makefile | 1 + >>>> 1 file changed, 1 insertion(+) >>>> >>>> diff --git a/lib/libnv/Makefile b/lib/libnv/Makefile >>>> index b13758931c4e..854cd2c7f3f3 100644 >>>> --- a/lib/libnv/Makefile >>>> +++ b/lib/libnv/Makefile >>>> @@ -10,6 +10,7 @@ SHLIB_MAJOR=3D 0 >>>> >>>> .PATH: ${SRCTOP}/sys/contrib/libnv ${SRCTOP}/sys/sys >>>> CFLAGS+=3D-I${.CURDIR} >>>> +CFLAGS+=3D-fPIC >>> >>> Wouldn't the better fix be renaming LIB to SHLIB like every other = >>> PIC >>> lib? >>> >> Ed pointed me at INSTALL_PIC_ARCHIVE. I=E2=80=99m also pondering just = >> making >> libpfctl a .so, which should also fix the issue this addresses. >> >> The complication is that libpfctl is currently a .a, and can be used = >> in a >> shared library itself (for bsnmp), so it has to be - and use - PIC. > > Out of curiosity, is there a reason not to have the shared library > depend on libnv as a shared library? > That=E2=80=99s mostly an accident. Libpfctl is currently marked as = INTERNALLIB=3Dtrue, which makes it a static library and links it to the = static library. I=E2=80=99m considering making libpfctl a shared library, if only because= = there are consumers of the pf ioctl interface in ports, and I intend to = remove some of the old (for which there are now nvlist-based versions) = ioctls. That will be a lot easier for those applications if they can = just use libpfctl. The downside is that, if we consider libpfctl to be a stable ABI, we = move the previous ABI problem from the kernel to userspace, rather than = getting rid of it. Best regards, Kristof