105 lines
2.5 KiB
Bash
Executable File
105 lines
2.5 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 2583 2012-09-14 09:49:25Z 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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#
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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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# Try to determine the in-tree revision number.
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#
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# This script attempts to handle the case where our sources have been
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# incorporated into an operating system's base sources.
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#
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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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# - If CVS is detected, we use the string `unknown'.
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# - Otherwise, we use `git --describe'.
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curdir=`pwd`
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cd ${top} || usage "ERROR: Cannot change directory to \"${top}\"."
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if [ -d .svn ]; then # FreeBSD and SF.Net sources.
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versionstring=" svn:"$(svnversion)
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elif [ -d CVS ]; then # NetBSD.
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versionstring=" cvs:unknown"
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else # DragonFlyBSD.
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versionstring=" git:"$(git describe --all --dirty --long 2> /dev/null)
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# Cannot determine an in-tree version number.
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if [ $? -ne 0 ]; then
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versionstring=""
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fi
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fi
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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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