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#!/bin/bash
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#
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# This script goes with the Makefile hacks for git/branch builds.
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#
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nopatches=1
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if [ "x$1" = "x--fedora" ]; then
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nopatches=0
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shift
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patchcomment="plus Fedora patches"
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else
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patchcomment="no Fedora patches"
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fi
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name=
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if [ "x$1" = "x--name" ]; then
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shift
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name="$1"
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shift
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fi
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if [ $# -lt 2 ]; then
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echo >&2 "Usage: GIT_DIR=REPO $0 [--fedora] [--name NAME]\
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TARBALL-TAG [PATCH-TAG...] BRANCH..."
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exit 2
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fi
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base=$1
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shift
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base_rev=`git-rev-parse "$base"` || exit
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patchbase=10
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nextpatch=$patchbase
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usepatch()
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{
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patches[$nextpatch]=$1
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nextpatch=$(($nextpatch + 1))
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}
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lasturl=:
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loglines="- Experimental build from git sources ($patchcomment)\\
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"
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log()
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{
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local logrev=$1
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local logbranch=$3
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local ref
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ref=`git-symbolic-ref -q $logbranch` && logbranch=$ref
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case $logbranch in
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refs/remotes/*)
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logbranch=${logbranch#refs/remotes/}
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local remote=${logbranch%%/*}
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logbranch=${logbranch#*/}
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logbranch=${logbranch//\//-}
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local url
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url=`git-config "remote.${remote}.url"` || {
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echo >&2 "Cannot find URL for remote $remote"
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exit 2
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}
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if [ "$url" != "$lasturl" ]; then
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lasturl="$url"
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loglines="${loglines}- $url\\
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"
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fi
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logtext="$(printf %12s "remote: ")$logbranch"
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;;
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*)
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lasturl=:
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logtext="$(printf %-12s "git $2:")$logbranch"
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;;
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esac
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loglines="${loglines}- $(printf %-35s "$logtext") ${logrev}\\
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"
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}
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patch_headers()
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{
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p=$patchbase
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while [ $p -lt $nextpatch ]; do
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echo "Patch$p: ${patches[$p]}\\"
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p=$(($p + 1))
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done
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}
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patch_apply()
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{
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p=$patchbase
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while [ $p -lt $nextpatch ]; do
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# echo "%patch$p -p1\\"
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echo "ApplyPatch ${patches[$p]}\\"
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p=$(($p + 1))
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done
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}
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base_rev()
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{
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local base=$1
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tag_rev=`git-rev-parse --revs-only --verify "$base^{}" 2> /dev/null` &&
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[ "`git-describe --tags $tag_rev`" = "$base" ] && return 0
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case "$1" in
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v*-git*)
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local id=patch-${1#v}.id
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if [ ! -r $id ]; then
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make download UPSTREAM_FILES=$id UPSTREAM_CHECKS=-- > /dev/null 2>&1
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fi
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[ -r $id ] && tag_rev=`cat $id` && return 0
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;;
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v2*)
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echo >&2 "Cannot find tag $base"
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exit 2
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;;
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esac
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return 1
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}
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log $base_rev base $base
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while base_rev $1; do
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base=$1
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base_rev=$tag_rev
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shift
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patchfile=patch-${base#v}.bz2
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fgrep -q $patchfile sources || usepatch $patchfile
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log $tag_rev tag $base
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done
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version=${base#v}
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now="`date +'%Y-%m-%d %H:%M %Z'`"
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GIT_DIFF_OPTS=-pu
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export GIT_DIFF_OPTS
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i=0
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last_base=$base
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last_base_rev=$base_rev
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for branch; do
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branch_rev=`git-rev-parse "$branch^{}"` || exit 2
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merge_base=`git-merge-base $last_base_rev $branch_rev` || {
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echo >&2 "No common ancestor for $last_base and $branch"
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exit 2
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}
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if ((i > 0)) && [ "x$merge_base" = "x${merge_rev[$(($i - 1))]}" ]; then
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echo >&2 "$last_base is not an ancestor of $branch"
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exit 2
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fi
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merge_rev[$i]=$merge_base
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((i++))
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last_base=$branch
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last_base_rev=$branch_rev
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done
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merge_rev[$i]=$last_base_rev
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test "x${merge_rev[0]}" = "x$base_rev" || {
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echo >&2 "$base is not an ancestor of $branch"
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exit 2
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}
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i=1
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for branch; do
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branch_rev=${merge_rev[$i]}
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((i++))
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case "$branch" in
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refs/remotes/*/master)
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branch_name=${branch#refs/remotes/}
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branch_name=${branch_name%/master}
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;;
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refs/remotes/*)
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branch_name=${branch#refs/remotes/}
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branch_name=${branch_name//\//-}
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;;
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*/*)
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branch_name=${branch_name//\//-}
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;;
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*)
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branch_name=$branch
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;;
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esac
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file=linux-${version}-${branch_name}.patch
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git diff --no-renames --patch-with-stat \
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-r "${base_rev}" -r "${branch_rev}" > $file || exit
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if [ ! -s $file ]; then
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rm -f $file
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continue
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fi
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usepatch $file
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log $branch_rev branch $branch
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base_rev="$branch_rev"
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done
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name=`echo ${name:-${branch}} | sed s/-/_/g`
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#upstream_branch=`date -u -d "$now" +${branch}.%Y%m%dT%H%M | sed s/-/_/g`
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upstream_branch=$name
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branch_rev=`git describe $base_rev | sed 's/-g[0-9a-f]*$//;s/^[^-]*//;s/-/./g'`
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logdate=`date -d "$now" +'%a %b %d %Y'`
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sed "/%define nopatches/c\\
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%define nopatches ${nopatches}\\
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%define upstream_branch ${name}\\
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%define upstream_branch_tag ${branch_rev}
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/^### BRANCH PATCH/a\\
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`patch_headers`
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###
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/^### BRANCH APPLY/a\\
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`patch_apply`
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###
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/^%changelog/a\\
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* ${logdate} ${GIT_AUTHOR_NAME} <${GIT_AUTHOR_EMAIL}>\\
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$loglines
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"
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