1#!/bin/sh 2 3# 4# CDDL HEADER START 5# 6# This file and its contents are supplied under the terms of the 7# Common Development and Distribution License ("CDDL"), version 1.0. 8# You may only use this file in accordance with the terms of version 9# 1.0 of the CDDL. 10# 11# A full copy of the text of the CDDL should have accompanied this 12# source. A copy of the CDDL is also available via the Internet at 13# http://www.illumos.org/license/CDDL. 14# 15# CDDL HEADER END 16# 17 18# Copyright (c) 2018 by Delphix. All rights reserved. 19# Copyright (c) 2018 by Matthew Thode. All rights reserved. 20 21# 22# Generate zfs_gitrev.h. Note that we need to do this for every 23# invocation of `make`, including for incremental builds. Therefore we 24# can't use a zfs_gitrev.h.in file which would be processed only when 25# `configure` is run. 26# 27 28set -e -u 29 30dist=no 31distdir=. 32while getopts D: flag 33do 34 case $flag in 35 \?) echo "Usage: $0 [-D distdir] [file]" >&2; exit 1;; 36 D) dist=yes; distdir=${OPTARG};; 37 esac 38done 39shift $((OPTIND - 1)) 40 41top_srcdir="$(dirname "$0")/.." 42GITREV="${1:-include/zfs_gitrev.h}" 43 44# GITREV should be a relative path (relative to top_builddir or distdir) 45case "${GITREV}" in 46 /*) echo "Error: ${GITREV} should be a relative path" >&2 47 exit 1;; 48esac 49 50ZFS_GITREV=$({ cd "${top_srcdir}" && 51 git describe --always --long --dirty 2>/dev/null; } || :) 52 53if [ "x${ZFS_GITREV}" = x ] 54then 55 # If the source directory is not a git repository, check if the file 56 # already exists (in the source) 57 if [ -f "${top_srcdir}/${GITREV}" ] 58 then 59 ZFS_GITREV="$(sed -n \ 60 '1s/^#define[[:blank:]]ZFS_META_GITREV "\([^"]*\)"$/\1/p' \ 61 "${top_srcdir}/${GITREV}")" 62 fi 63elif [ ${dist} = yes ] 64then 65 # Append -dist when creating distributed sources from a git repository 66 ZFS_GITREV="${ZFS_GITREV}-dist" 67fi 68ZFS_GITREV=${ZFS_GITREV:-unknown} 69 70GITREVTMP="${GITREV}~" 71printf '#define\tZFS_META_GITREV "%s"\n' "${ZFS_GITREV}" >"${GITREVTMP}" 72GITREV="${distdir}/${GITREV}" 73if cmp -s "${GITREV}" "${GITREVTMP}" 74then 75 rm -f "${GITREVTMP}" 76else 77 mv -f "${GITREVTMP}" "${GITREV}" 78fi 79