From owner-freebsd-toolchain@freebsd.org Mon Jan 30 18:18:18 2017 Return-Path: Delivered-To: freebsd-toolchain@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id BA0B0CC80E9 for ; Mon, 30 Jan 2017 18:18:18 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 9EA5219EA for ; Mon, 30 Jan 2017 18:18:18 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id v0UIIIdw094674 for ; Mon, 30 Jan 2017 18:18:18 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-toolchain@FreeBSD.org Subject: [Bug 216587] cc should accept -pie argument Date: Mon, 30 Jan 2017 18:18:18 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: bin X-Bugzilla-Version: 11.0-STABLE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: dim@FreeBSD.org X-Bugzilla-Status: Closed X-Bugzilla-Resolution: Not A Bug X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: freebsd-toolchain@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: resolution bug_status Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-toolchain@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Maintenance of FreeBSD's integrated toolchain List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 30 Jan 2017 18:18:18 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D216587 Dimitry Andric changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |Not A Bug Status|In Progress |Closed --- Comment #3 from Dimitry Andric --- Removing some stuff from the command line to clarify: > c++ -c [...] -pie -fPIE [...] -o chatline.o src/chatlog/chatline.cpp So this is a compilation of a .cpp file to .o, and this case the -pie option does not apply, as it is meant for the link phase. Examples of how to avoid "unused argument" warnings: $ c++ -fPIE -pie helloworld.cpp -o helloworld $ file helloworld helloworld: ELF 32-bit LSB shared object, Intel 80386, version 1 (FreeBSD), dynamically linked, interpreter /libexec/ld-elf.so.1, for FreeBSD 12.0 (1200020), FreeBSD-style, not stripped $ c++ -fPIE -c helloworld.cpp $ c++ -pie helloworld.o -o helloworld $ file helloworld helloworld: ELF 32-bit LSB shared object, Intel 80386, version 1 (FreeBSD), dynamically linked, interpreter /libexec/ld-elf.so.1, for FreeBSD 12.0 (1200020), FreeBSD-style, not stripped Alternatively, if it is difficult to get upstream software to untangle CFLA= GS, CXXFLAGS and LDFLAGS, add -Qunused-arguments. --=20 You are receiving this mail because: You are the assignee for the bug.=