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epm-repack-rpm
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#!/bin/sh
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#
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# Copyright (C) 2017-2018, 2020  Etersoft
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# Copyright (C) 2017-2018, 2020  Vitaly Lipatov <lav@etersoft.ru>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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__get_icons_hicolor_list()
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{
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    local i j
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    for i in apps scalable symbolic 8x8 14x14 16x16 20x20 22x22 24x24 28x28 32x32 36x36 42x42 45x45 48x48 64 64x64 72x72 96x96 128x128 144x144 160x160 192x192 256x256 256x256@2x 480x480 512 512x512 1024x1024 ; do
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        echo "/usr/share/icons/hicolor/$i"
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        for j in actions animations apps categories devices emblems emotes filesystems intl mimetypes places status stock ; do
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            echo "/usr/share/icons/hicolor/$i/$j"
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        done
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    done
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}
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# args: pkgname buildroot spec
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__fix_spec()
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{
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    local pkgname="$1"
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    local buildroot="$2"
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    local spec="$3"
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    local i
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    # drop forbidded paths
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    # https://bugzilla.altlinux.org/show_bug.cgi?id=38842
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    for i in / /etc /etc/init.d /etc/systemd /bin /opt /usr /usr/bin /usr/lib /usr/lib64 /usr/share /usr/share/doc /var /var/log /var/run \
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            /etc/cron.daily /usr/share/icons/usr/share/pixmaps /usr/share/man /usr/share/man/man1 /usr/share/appdata /usr/share/applications /usr/share/menu \
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            /usr/share/icons/hicolor $(__get_icons_hicolor_list) ; do
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        sed -i \
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            -e "s|/\./|/|" \
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            -e "s|^%dir[[:space:]]\"$i/*\"$||" \
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            -e "s|^%dir[[:space:]]$i/*$||" \
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            -e "s|^\"$i/*\"$||" \
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            -e "s|^$i/*$||" \
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            $spec
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    done
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    # commented out: conflicts with already installed package
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    # drop %dir for existed system dirs
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    #for i in $(grep '^%dir "' $spec | sed -e 's|^%dir  *"\(.*\)".*|\1|' ) ; do #"
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    #    echo "$i" | grep -q '^/opt/' && continue
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    #    [ -d "$i" ] && [ -n "$verbose" ] && echo "drop dir $i from packing, it exists in the system"
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    #done
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    # replace dir "/path/dir" -> %dir /path/dir
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    grep '^"/' $spec | sed -e 's|^"\(/.*\)"$|\1|' | while read i ; do
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        # add dir as %dir in the filelist
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        if [ -d "$buildroot$i" ] ; then
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            subst "s|^\(\"$i\"\)$|%dir \1|" $spec
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        #else
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        #    subst 's|^\("'$i'"\)$|\1|' $spec
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        fi
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    done
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}
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has_repack_script()
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{
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    local repackcode="$EPM_REPACK_SCRIPTS_DIR/$1.sh"
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    [ -s "$repackcode" ]
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}
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# args: pkgname buildroot spec
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__apply_fix_code()
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{
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    local repackcode="$EPM_REPACK_SCRIPTS_DIR/$1.sh"
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    [ -s "$repackcode" ] || return
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    [ -f "$repackcode.rpmnew" ] && warning "There is .rpmnew file(s) in $EPM_REPACK_SCRIPTS_DIR dir. The pack script can be outdated."
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    shift
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    [ "$PROGDIR" = "/usr/bin" ] && SCPATH="$PATH" || SCPATH="$PROGDIR:$PATH"
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    local bashopt=''
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    [ -n "$debug" ] && bashopt='-x'
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    ( unset EPMCURDIR ; export PATH=$SCPATH ; docmd $CMDSHELL $bashopt $repackcode "$1" "$2" "$3" "$4" "$5" ) || fatal "There is an error from $repackcode script"
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}
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__create_rpmmacros()
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{
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    cat <<EOF >$HOME/.rpmmacros
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%_topdir    $HOME/RPM
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%_tmppath    $TMPDIR
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%packager    EPM <support@eepm.ru>
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%_vendor    EEPM
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%_gpg_name    support@etersoft.ru
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# TODO: use special user for repack (instead of root of local user)
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%_allow_root_build    1
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EOF
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    remove_on_exit "$HOME/.rpmmacros"
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}
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# will set RPMBUILD
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__try_install_eepm_rpmbuild()
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{
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    RPMBUILD=/usr/bin/rpmbuild
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    [ -x "$RPMBUILD" ] && return
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    RPMBUILD=/usr/bin/eepm-rpmbuild
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    if [ ! -x $RPMBUILD ] ; then
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        epm install eepm-rpm-build
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    fi
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    if [ -x $RPMBUILD ] ; then
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        warning "will use eepm-rpmbuild for rpm packing"
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        export EPM_RPMBUILD=$RPMBUILD
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        return
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    fi
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    RPMBUILD=/usr/bin/rpmbuild
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}
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# will fill repacked_pkgs var
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__epm_repack_to_rpm()
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{
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    local pkgs="$*"
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    # Note: install epm-repack for static (package based) dependencies
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    assure_exists alien || fatal
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    # will set RPMBUILD
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    __try_install_eepm_rpmbuild
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    if [ ! -x $RPMBUILD ] ; then
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        RPMBUILD=/usr/bin/rpmbuild
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        # TODO: check for all systems
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        case $PKGFORMAT in
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            rpm)
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                assure_exists $RPMBUILD rpm-build || fatal
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                ;;
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            deb)
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                assure_exists $RPMBUILD rpm || fatal
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                ;;
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        esac
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    fi
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    umask 022
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    # TODO: improve
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    if echo "$pkgs" | grep -q "\.deb" ; then
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        assure_exists dpkg || fatal
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        # TODO: Для установки требует: /usr/share/debconf/confmodule но пакет не может быть установлен
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        # assure_exists debconf
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    fi
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    local pkg
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    local alpkg
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    local abspkg
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    local tmpbuilddir
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    repacked_pkgs=''
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    for pkg in $pkgs ; do
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        # TODO: keep home?
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        HOME="$(mktemp -d --tmpdir=$BIGTMPDIR)" || fatal
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        remove_on_exit $HOME
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        export HOME
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        __create_rpmmacros
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        tmpbuilddir=$HOME/$(basename $pkg).tmpdir
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        mkdir $tmpbuilddir
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        abspkg="$(realpath $pkg)"
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        info ""
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        info "Repacking $abspkg to local rpm format (inside $tmpbuilddir) ..."
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        alpkg=$(basename $pkg)
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        # don't use abs package path: copy package to temp dir and use there
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        cp -l $verbose $pkg $tmpbuilddir/../$alpkg || cp $verbose $pkg $tmpbuilddir/../$alpkg || fatal
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        cd $tmpbuilddir/../ || fatal
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        # fill alpkg and SUBGENERIC
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        __prepare_source_package "$(realpath $alpkg)"
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        cd $tmpbuilddir/ || fatal
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        if [ -n "$verbose" ] ; then
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            docmd alien --generate --to-rpm $verbose $scripts "../$alpkg" || fatal
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        else
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            showcmd alien --generate --to-rpm $scripts "../$alpkg"
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            a='' alien --generate --to-rpm $scripts "../$alpkg" >/dev/null || fatal
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        fi
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        # remove all empty dirs (hack against broken dpkg with LF in the end of line) (hack for linux_pantum.deb)
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        rmdir * 2>/dev/null
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        local subdir="$(echo *)"
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        [ -d "$subdir" ] || fatal "can't find subdir in $(pwd)"
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        local buildroot="$tmpbuilddir/$subdir"
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        # for tarballs fix permissions (ideally fix in pack.d/generic-tar.sh, but there is tar repacking only)
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        [ "$SUBGENERIC" = "tar" ] && chmod $verbose -R a+rX $buildroot/*
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        # detect spec and move to prev dir
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        local spec="$(echo $buildroot/*.spec)"
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        [ -s "$spec" ] || fatal "Can't find spec $spec"
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        mv $spec $tmpbuilddir || fatal
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        spec="$tmpbuilddir/$(basename "$spec")"
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        local pkgname="$(grep "^Name: " $spec | sed -e "s|Name: ||g" | head -n1)"
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        # run generic scripts and repack script for the pkg
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        cd $buildroot || fatal
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        __fix_spec $pkgname $buildroot $spec
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        __apply_fix_code "generic" $buildroot $spec $pkgname $abspkg $SUBGENERIC
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        __apply_fix_code "generic-$SUBGENERIC" $buildroot $spec $pkgname $abspkg
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        __apply_fix_code $pkgname $buildroot $spec $pkgname $abspkg
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        if ! has_repack_script $pkgname ; then
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            __apply_fix_code "generic-default" $buildroot $spec $pkgname $abspkg
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        fi
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        cd - >/dev/null
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        TARGETARCH=$(epm print info -a | sed -e 's|^x86$|i586|')
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        showcmd $RPMBUILD --buildroot $buildroot --target $TARGETARCH -bb $spec
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        if [ -n "$verbose" ] ; then
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            a='' $RPMBUILD --buildroot $buildroot --target $TARGETARCH -bb $spec || fatal
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        else
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            a='' $RPMBUILD --buildroot $buildroot --target $TARGETARCH -bb $spec >/dev/null || fatal
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        fi
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        # remove copy of source binary package (don't mix with generated)
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        rm -f $tmpbuilddir/../$alpkg
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        local repacked_rpm="$(realpath $tmpbuilddir/../*.rpm)"
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        if [ -s "$repacked_rpm" ] ; then
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            remove_on_exit "$repacked_rpm"
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            [ -n "$repacked_pkgs" ] && repacked_pkgs="$repacked_pkgs $repacked_rpm" || repacked_pkgs="$repacked_rpm"
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        else
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            warning "Can't find converted rpm for source binary package '$pkg' (got $repacked_rpm)"
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        fi
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        cd $EPMCURDIR >/dev/null
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    done
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    true
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}
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