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https://github.com/Telecominfraproject/OpenCellular.git
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8a94ea4fbd
Up until now, every image includes the time of compilation in the build information. This makes it impossible to verify that a particular image came from a particular source code snapshot. With this change, specifying USE_GIT_DATE=1 to the make command will use the author date of HEAD as the timestamp. That means that successive builds from the same source will produce bitwise-identical output (assuming the same toolchain, of course). BUG=none BRANCH=none TEST=manual Do this twice: \rm -rf build make BOARD=cr50 USE_GIT_DATE=1 md5sum build/cr50/ec.bin The md5sum should be the same for both runs. Change-Id: If64307101a453cb13c62fa003f1bf432f4998273 Signed-off-by: Bill Richardson <wfrichar@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/252751 Reviewed-by: Randall Spangler <rspangler@chromium.org>
57 lines
1.7 KiB
Bash
Executable File
57 lines
1.7 KiB
Bash
Executable File
#!/bin/bash
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#
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# Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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#
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# Generate version information for the EC binary
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if ghash=`git rev-parse --short --verify HEAD 2>/dev/null`; then
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if gdesc=`git describe --dirty --match='v*' 2>/dev/null`; then
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IFS="-" fields=($gdesc)
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tag="${fields[0]}"
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IFS="." vernum=($tag)
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numcommits=$((${vernum[2]}+${fields[1]:-0}))
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ver_major="${vernum[0]}"
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ver_branch="${vernum[1]}"
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else
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numcommits=`git rev-list HEAD | wc -l`
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ver_major="v0"
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ver_branch="0"
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fi
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# avoid putting the -dirty attribute if only the timestamp
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# changed
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git status > /dev/null 2>&1
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dirty=`sh -c "[ '$(git diff-index --name-only HEAD)' ] && echo '-dirty'"`
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vbase="${ver_major}.${ver_branch}.${numcommits}-${ghash}${dirty}"
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else
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vbase="no_version"
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fi
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ver="${BOARD}_${vbase}"
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gitdate=$(git log -1 --format='%ai' HEAD | cut -d ' ' -f '1 2')
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echo "/* This file is generated by util/getversion.sh */"
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echo "/* Version string for use by common/version.c */"
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echo "#ifdef SHIFT_CODE_FOR_TEST"
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echo "#define CROS_EC_VERSION \"${ver}_shift\""
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echo "#else"
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echo "#define CROS_EC_VERSION \"${ver}\""
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echo "#endif"
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echo "/* Version string, truncated to 31 chars (+ terminating null = 32) */"
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echo "#define CROS_EC_VERSION32 \"${ver:0:31}\""
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echo "/* Sub-fields for use in Makefile.rules and to form build info string"
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echo " * in common/version.c. */"
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echo "#define VERSION \"${ver}\""
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echo "#define BUILDER \"${USER}@`hostname`\""
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echo "/* Author date of last commit, in case compile-time is not used. */"
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echo "#ifndef DATE"
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echo "#define DATE \"${gitdate}\""
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echo "#endif"
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