1#!/bin/sh 2# SPDX-License-Identifier: CDDL-1.0 3 4# 5# This file and its contents are supplied under the terms of the 6# Common Development and Distribution License ("CDDL"), version 1.0. 7# You may only use this file in accordance with the terms of version 8# 1.0 of the CDDL. 9# 10# A full copy of the text of the CDDL should have accompanied this 11# source. A copy of the CDDL is also available via the Internet at 12# https://opensource.org/license/CDDL-1.0. 13# 14 15# Copyright (c) 2018 by Delphix. All rights reserved. 16# Copyright (c) 2018 by Matthew Thode. All rights reserved. 17 18# 19# Generate zfs_gitrev.h. Note that we need to do this for every 20# invocation of `make`, including for incremental builds. Therefore we 21# can't use a zfs_gitrev.h.in file which would be processed only when 22# `configure` is run. 23# 24 25set -eu 26 27dist=no 28distdir=. 29while getopts D: flag 30do 31 case $flag in 32 \?) echo "Usage: $0 [-D distdir] [file]" >&2; exit 1;; 33 D) dist=yes; distdir=${OPTARG};; 34 *) ;; 35 esac 36done 37shift $((OPTIND - 1)) 38 39top_srcdir="$(dirname "$0")/.." 40GITREV="${1:-include/zfs_gitrev.h}" 41 42# GITREV should be a relative path (relative to top_builddir or distdir) 43case "${GITREV}" in 44 /*) echo "Error: ${GITREV} should be a relative path" >&2 45 exit 1;; 46 *) ;; 47esac 48 49ZFS_GITREV=$({ cd "${top_srcdir}" && 50 git describe --always --long --dirty 2>/dev/null; } || :) 51 52if [ -z "${ZFS_GITREV}" ] 53then 54 # If the source directory is not a git repository, check if the file 55 # already exists (in the source) 56 if [ -f "${top_srcdir}/${GITREV}" ] 57 then 58 ZFS_GITREV=$(sed -n \ 59 '1s/^#define[[:blank:]]ZFS_META_GITREV "\([^"]*\)"$/\1/p' \ 60 "${top_srcdir}/${GITREV}") 61 fi 62elif [ "${dist}" = yes ] 63then 64 # Append -dist when creating distributed sources from a git repository 65 ZFS_GITREV="${ZFS_GITREV}-dist" 66fi 67ZFS_GITREV=${ZFS_GITREV:-unknown} 68 69GITREVTMP="${GITREV}~" 70printf '#define\tZFS_META_GITREV "%s"\n' "${ZFS_GITREV}" >"${GITREVTMP}" 71GITREV="${distdir}/${GITREV}" 72if cmp -s "${GITREV}" "${GITREVTMP}" 73then 74 rm -f "${GITREVTMP}" 75else 76 mv -f "${GITREVTMP}" "${GITREV}" 77fi 78