From a268768c71ce1189f7a124dbe6869900a3ee3554 Mon Sep 17 00:00:00 2001 From: =?utf8?q?J=C3=A9r=C3=B4me=20Pouiller?= Date: Tue, 20 Dec 2016 14:46:19 +0100 Subject: [PATCH] fakedate: new package MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit `date' is widely used by packages to include build information in their binaries. Unfortunately, this is incompatible with BR2_REPRODUCIBLE. Instead of having to identify all `date' invocations in the different packages, this commit adds a small tool that allows to always return the same date. This work was sponsored by `BA Robotic Systems'. [Peter: drop debugging print] Signed-off-by: Jérôme Pouiller Reviewed-by: Samuel Martin Signed-off-by: Peter Korsgaard --- package/fakedate/fakedate | 57 ++++++++++++++++++++++++++++++++++++ package/fakedate/fakedate.mk | 15 ++++++++++ 2 files changed, 72 insertions(+) create mode 100755 package/fakedate/fakedate create mode 100644 package/fakedate/fakedate.mk diff --git a/package/fakedate/fakedate b/package/fakedate/fakedate new file mode 100755 index 0000000000..4a9b9b5e64 --- /dev/null +++ b/package/fakedate/fakedate @@ -0,0 +1,57 @@ +#!/bin/sh +# vim: set sw=4 expandtab: +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +# +# Copyright (C) 2016 Jérôme Pouiller +# + +# Sanity check +if ! readlink -f "$0" | grep -q fakedate; then + echo "fakedate: Please name this script \`fakedate'" + exit 1 +fi + +DATE_BIN=false +# Do not call `date' directly since it will produce an infinite recursion. +# Instead, find path of true `date' binary. +for P in `echo $PATH | tr ':' ' '`; do + if [ -x "$P/date" ]; then + if readlink -f "$P/date" | grep -qv fakedate; then + DATE_BIN="$P/date" + break; + fi + fi +done + +if [ -n "$SOURCE_DATE_EPOCH" ]; then + FORCE_EPOCH=1 + for i in "$@"; do + # Use of --date, --file and --reference (and their short option counter + # parts) is incompatible with SOURCE_DATE_EPOCH. + # -u and -R are the only short options without argument. So they could + # appear between '-' and option we want to match. + if echo "$i" | grep -qE '^-([uR]*d|-date|[uR]*f|-file|[uR]*r|--reference)'; then + FORCE_EPOCH=0 + break; + fi + done + if [ $FORCE_EPOCH -eq 1 ]; then + echo "date: Warning: using \$SOURCE_DATE_EPOCH instead of true time" >&2 + exec $DATE_BIN -d "@$SOURCE_DATE_EPOCH" "$@" + fi +fi + +exec $DATE_BIN "$@" diff --git a/package/fakedate/fakedate.mk b/package/fakedate/fakedate.mk new file mode 100644 index 0000000000..61d4bd702e --- /dev/null +++ b/package/fakedate/fakedate.mk @@ -0,0 +1,15 @@ +################################################################################ +# +# fakedate +# +################################################################################ + +# source included in buildroot +HOST_FAKEDATE_LICENSE = GPLv2+ + +define HOST_FAKEDATE_INSTALL_CMDS + $(INSTALL) -D -m 755 package/fakedate/fakedate $(HOST_DIR)/usr/bin/fakedate + ln -sfn fakedate $(HOST_DIR)/usr/bin/date +endef + +$(eval $(host-generic-package)) -- 2.30.2