Blame into_srpm.sh

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#!/bin/bash -u
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#
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# Turn a centos git repo into a .src.rpm file
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#
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# Might want to drop this in ~/bin/ and chmod u+x it
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#
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#  License: GPLv2
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#
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#  Initial Author: Pat Riehecky <riehecky at fnal.gov>
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#
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#####################################################################
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usage() {
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    echo ''                                               >&2
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    echo "$0 [-hqts] [-d dist] [-b branch] [-c shasum]"   >&2
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    echo ''                                               >&2
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    echo 'You need to run this from inside a sources git repo' >&2
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    echo ''                                               >&2
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    echo ' -h: This help message'                         >&2
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    echo ' -q: Suppress warnings'                         >&2
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    echo ' -t: Set srpm timestamp to commit date'         >&2
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    echo ' -s: Allow building as a SCL style package'     >&2
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    echo ''                                               >&2
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    echo ' -d: Use this %{dist} instead of automatic value'>&2
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    echo ''                                               >&2
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    echo ' -b: specify a branch to examine'               >&2
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    echo "     defaults to repo's current branch"         >&2
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    echo "     NOTE: your repo will be set to this branch">&2
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    echo ''                                               >&2
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    echo ' -c: specify a commit id'                       >&2
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    echo "     defaults to repo's current commit id"      >&2
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    echo "     NOTE: your repo will be set to this commit">&2
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    echo ''                                               >&2
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    echo "  $0"                                           >&2
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    echo "  $0 -b c7 -t"                                  >&2
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    echo "  $0 -b c7 -s"                                  >&2
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    echo "  $0 -b c7 -d yourdisthere"                     >&2
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    echo "  $0 -b remotes/origin/c7"                      >&2
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    echo "  $0 -c 865ae5909b2b5d5fb37971b7ad7960f1fd5a5ffa" >&2
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    echo "  $0 -b c7 -c 865ae5909b2b5d5fb37971b7ad7960f1fd5a5ffa" >&2
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    exit 1
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}
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#####################################################################
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QUIET=0
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KEEPTIMESTAMP=0
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ALLOWSCL=0
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COMMITHASH=""
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BRANCH=""
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DIST=''
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#####################################################################
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# setup args in the right order for making getopt evaluation
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# nice and easy.  You'll need to read the manpages for more info
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# utilizing 'while' construct rather than 'for arg' to avoid unnecessary
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# shifting of program args
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args=$(getopt -o htsqb:c:d: -- "$@")
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eval set -- "$args"
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while [[ 0 -eq 0 ]]; do
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    case $1 in
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        -- )
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            # end of getopt args, shift off the -- and get out of the loop
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            shift
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            break
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           ;;
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         -t )
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            # keep timestamps of commit on srpm
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            KEEPTIMESTAMP=1
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            shift
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           ;;
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         -q )
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            # suppress warnings
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            QUIET=1
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            shift
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           ;;
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         -s )
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            # try to detect if this was an SCL and build as such
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            ALLOWSCL=1
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            shift
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           ;;
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         -d )
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            # Set %{dist} to this instead the automatic value
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            DIST=$2
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            shift
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            shift
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           ;;
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         -c )
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            # Use this commit id
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            COMMITHASH=$2
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            shift
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            shift
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           ;;
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         -b )
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            # Check this particular branch 
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            BRANCH=$2
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            shift
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            shift
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           ;;
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         -h )
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            # get help
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            usage
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           ;;
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    esac
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done
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if [[ ! -d .git ]] || [[ ! -d SPECS ]]; then
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    echo 'You need to run this from inside a sources git repo' >&2
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    exit 1
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fi
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which git >/dev/null 2>&1
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if [[ $? -ne 0 ]]; then
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    echo 'You need git in PATH' >&2
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    exit 1
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fi
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which get_sources.sh >/dev/null 2>&1
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if [[ $? -ne 0 ]]; then
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    echo 'You need get_sources.sh from centos-git-common in PATH' >&2
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    exit 1
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fi
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which return_disttag.sh >/dev/null 2>&1
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if [[ $? -ne 0 ]]; then
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    echo 'You need return_disttag.sh from centos-git-common in PATH' >&2
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    exit 1
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fi
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which show_possible_srpms.sh >/dev/null 2>&1
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if [[ $? -ne 0 ]]; then
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    echo 'You need show_possible_srpms.sh from centos-git-common in PATH' >&2
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    exit 1
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fi
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if [[ ${ALLOWSCL} -eq 1 ]]; then
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    rpm -q scl-utils-build >/dev/null 2>&1
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    if [[ $? -ne 0 ]]; then
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        echo 'Without scl-utils-build some SCL style sources be parsed' >&2
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        exit 1
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    fi
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fi
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# Set us to requested branch for further operations
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if [[ "x${BRANCH}" != 'x' ]]; then
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    if [[ $QUIET -eq 1 ]]; then
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        git fetch >/dev/null
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        git checkout ${BRANCH} >/dev/null
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    else
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        git fetch
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        git checkout ${BRANCH}
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    fi
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fi
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# Set us to requested commit for further operations
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if [[ "x${COMMITHASH}" != 'x' ]]; then
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    if [[ $QUIET -eq 1 ]]; then
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        git fetch >/dev/null
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        git checkout ${COMMITHASH} >/dev/null
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    else
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        git fetch
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        git checkout ${COMMITHASH}
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    fi
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fi
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# Download archive from git.centos.org
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if [[ $QUIET -eq 1 ]]; then
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    get_sources.sh
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else
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    get_sources.sh -q
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fi
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SPECFILE=$(cd SPECS; ls *.spec)
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# Determine if we are an SCL
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ISSCL=0
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if [[ ${ALLOWSCL} -eq 1 ]]; then
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    mytestsclname='DA39A3EE5E6B4B0D3255BFEF95601890AFD80709'
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    mysclcheck=$(rpm --define "dist el" --define "scl ${mytestsclname}" -q --specfile "SPECS/${SPECFILE}" --qf '%{n}-%{v}-%{r}\n' 2>/dev/null | head -n 1)
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    echo ${mysclcheck} | grep -q ${mytestsclname}
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    if [[ $? -eq 0 ]]; then
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        ISSCL=1
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        SCLNAME=$(show_possible_srpms.sh | cut -d'-' -f1 | sort -u)
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        if [[ $(echo ${SCLNAME} | wc -l) -ne 1 ]]; then
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            echo "$0 failed to determine unique SCL name" >&2
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            echo "Found:"                                 >&2
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            echo "${SCLNAME}"                             >&2
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        fi
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    fi
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fi
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# build our rpmopts list
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RPMOPTS="-bs --nodeps"
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# determine automatically unless we've got one set
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if [[ "x${DIST}" == 'x' ]]; then
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    if [[ ${QUIET} -eq 1 ]]; then
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        DIST=$(return_disttag.sh -q)
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    else
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        DIST=$(return_disttag.sh)
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    fi
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fi
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# put it all together
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if [[ ${ISSCL} -eq 1 ]]; then
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    rpmbuild --define "%_topdir `pwd`" ${RPMOPTS} --define "%dist ${DIST}" --define "%scl ${SCLNAME}" SPECS/${SPECFILE}
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    RC=$?
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else
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    rpmbuild --define "%_topdir `pwd`" ${RPMOPTS} --define "%dist ${DIST}" SPECS/${SPECFILE}
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    RC=$?
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fi
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if [[ ${KEEPTIMESTAMP} -eq 1 ]]; then
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    timestamp=$(git log --pretty=%ai -1)
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    find . -type f -name \*.src.rpm -exec touch -d "${timestamp}" {} \;
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fi
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if [[ ${RC} -ne 0 ]]; then
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    if [[ ${QUIET} -eq 1 ]]; then
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        echo "$0 failed to recreate srpm" >&2
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    fi
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    exit 1
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fi