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https://github.com/freebsd/freebsd-src
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d003e0d7fe
This contains many small bugfixes and documentation improvements. Sponsored by: The FreeBSD Foundation
114 lines
2.8 KiB
Bash
Executable file
114 lines
2.8 KiB
Bash
Executable file
#!/bin/sh
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#
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# This script generates a project-wide version identifier for use by
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# the `elftc_version()' API.
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#
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# $Id: make-toolchain-version 3731 2019-04-06 14:28:34Z jkoshy $
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#
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# Defaults.
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#
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buildhost=`uname -s`
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elftcname="elftoolchain"
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options="e:h:o:r:t:"
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top=""
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version="HEAD"
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versionfile="elftc_version.c"
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progname=`basename ${0}`
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usage()
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{
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exec >&2
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# Print a message, if supplied.
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if [ -n "${*}" ]; then echo "##${@}"; fi
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echo "Usage: ${progname} [options]"
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echo " Generate a toolchain-wide version number"
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echo " -e PROJECTNAME Set the project name [default: ${elftcname}]."
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echo " -h HOSTOS Set the build OS [default: ${buildhost}]."
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echo " -o OUTPUT Set the output file [default: ${versionfile}]."
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echo " -r VERSION Set the version string [default: ${version}]."
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echo " -t TOPDIR Set the top-of-tree directory [required]."
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exit 1
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}
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# Determine the revision number for the source tree.
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#
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# - If CVS is detected, we use the string `unknown'.
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# - If SVN is detected, we use the `svninfo' tool to determine the
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# in-tree revision number.
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# - Otherwise, we use `git --describe'.
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get_revision_string()
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{
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v="unknown:unknown"
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if [ -d CVS ]; then # Look for CVS (NetBSD).
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v="cvs:unknown"
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elif [ -d .svn ]; then # An SVN checkout (SourceForge or FreeBSD).
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svnversion="$(svnversion 2>/dev/null)"
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if [ -n "${svnversion}" ]; then
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v="svn:${svnversion}"
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fi
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else # Try git (DragonflyBSD).
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gitversion="$(git describe --all --dirty --long 2> /dev/null)"
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if [ -n "${gitversion}" ]; then
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v="git:${gitversion}"
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fi
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fi
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echo "${v}"
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}
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#
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# Parse options.
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#
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while getopts ${options} option
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do
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case ${option} in
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'e') elftcname="${OPTARG}" ;;
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'h') buildhost="${OPTARG}" ;;
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'o') versionfile="${OPTARG}" ;;
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'r') version="${OPTARG}" ;;
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't') top="${OPTARG}" ;;
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'?') usage ;;
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esac
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done
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[ -n "${top}" ] || usage
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curdir=`pwd`
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cd ${top} || usage "ERROR: Cannot change directory to \"${top}\"."
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# Determine the in-tree revision number.
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versionstring="$(get_revision_string)" || {
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echo "ERROR: cannot determine a revision number." 1>&2;
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exit 1
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}
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cd ${curdir} || usage "Cannot change back to ${curdir}."
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#
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# Only replace the source file if its content has changed.
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#
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tmpfile=`mktemp ${TMPDIR:-/tmp}/MV.XXXXXXX`
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trap "rm -f ${tmpfile};" 0 1 2 3 15
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cat > ${tmpfile} <<EOF
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/* WARNING: Generated by "${progname}". */
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#include <sys/types.h>
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#include <libelftc.h>
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const char *
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elftc_version(void)
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{
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return "${elftcname} ${version} ${buildhost} ${versionstring}";
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}
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EOF
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if ! cmp -s ${tmpfile} ${versionfile}; then
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echo "@ ${progname}: building \"${versionfile}\"."
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cp ${tmpfile} ${versionfile} || exit ${?}
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fi
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