From owner-svn-src-head@freebsd.org Wed Jul 15 12:07:50 2020 Return-Path: Delivered-To: svn-src-head@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 2FD7F364721; Wed, 15 Jul 2020 12:07:50 +0000 (UTC) (envelope-from arichardson@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (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 "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4B6GNj3JNQz4g12; Wed, 15 Jul 2020 12:07:49 +0000 (UTC) (envelope-from arichardson@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 8BC2C16DA5; Wed, 15 Jul 2020 12:07:48 +0000 (UTC) (envelope-from arichardson@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 06FC7med068616; Wed, 15 Jul 2020 12:07:48 GMT (envelope-from arichardson@FreeBSD.org) Received: (from arichardson@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 06FC7mKs068615; Wed, 15 Jul 2020 12:07:48 GMT (envelope-from arichardson@FreeBSD.org) Message-Id: <202007151207.06FC7mKs068615@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: arichardson set sender to arichardson@FreeBSD.org using -f From: Alex Richardson Date: Wed, 15 Jul 2020 12:07:48 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r363216 - head/lib/libpmc X-SVN-Group: head X-SVN-Commit-Author: arichardson X-SVN-Commit-Paths: head/lib/libpmc X-SVN-Commit-Revision: 363216 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 15 Jul 2020 12:07:50 -0000 Author: arichardson Date: Wed Jul 15 12:07:47 2020 New Revision: 363216 URL: https://svnweb.freebsd.org/changeset/base/363216 Log: Avoid rebuilding libpmc in every incremental rebuild Generate libpmc_events.c in a temporary file first and only overwrite it if the files are actually different. This avoids compiling and relinking the different variants of libpmc on every incremental build. Reviewed By: jhb Differential Revision: https://reviews.freebsd.org/D24784 Modified: head/lib/libpmc/Makefile Modified: head/lib/libpmc/Makefile ============================================================================== --- head/lib/libpmc/Makefile Wed Jul 15 10:24:39 2020 (r363215) +++ head/lib/libpmc/Makefile Wed Jul 15 12:07:47 2020 (r363216) @@ -32,9 +32,13 @@ SUBDIR+= pmu-events .endif .endif -libpmc_events.c: ${JEVENTS} - ${JEVENTS} ${EVENT_ARCH} ${.CURDIR}/pmu-events/arch libpmc_events.c -SRCS+= libpmc_events.c +libpmc_events.c: ${JEVENTS} .META + ${JEVENTS} ${EVENT_ARCH} ${.CURDIR}/pmu-events/arch ${.TARGET}.tmp + if [ ! -e ${.TARGET} ] || ! cmp -s ${.TARGET} ${.TARGET}.tmp; then \ + mv -f ${.TARGET}.tmp ${.TARGET}; \ + fi +CLEANFILES+= libpmc_events.c libpmc_events.c.tmp +SRCS+= libpmc_events.c .endif WARNS?= 3