160 lines
3.2 KiB
Bash
Executable File
160 lines
3.2 KiB
Bash
Executable File
#!/bin/bash
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#
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# This script merges together the hierarchy of CONFIG_* files under generic
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# and debug to form the necessary $PACKAGE_NAME<version>-<arch>-<variant>.config
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# files for building RHEL kernels, based on the contents of a control file
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PACKAGE_NAME="${1:-kernel}" # defines the package name used
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KVERREL="${2:-}"
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SUBARCH="${3:-}" # defines a specific arch
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SCRIPT="$(readlink -f $0)"
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OUTPUT_DIR="$PWD"
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SCRIPT_DIR="$(dirname $SCRIPT)"
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LANG=en_US.UTF-8
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# to handle this script being a symlink
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cd $SCRIPT_DIR
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set errexit
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set nounset
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cleanup()
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{
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rm -f config-*
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}
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die()
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{
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echo "$1"
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cleanup
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exit 1
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}
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function combine_config_layer()
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{
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dir=$1
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file="config-$(echo $dir | sed -e 's|/|-|g')"
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if [ $(ls $dir/ | grep -c "^CONFIG_") -eq 0 ]; then
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touch $file
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return
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fi
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cat $dir/CONFIG_* > $file
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}
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function merge_configs()
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{
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archvar=$1
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arch=$(echo "$archvar" | cut -f1 -d"-")
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configs=$2
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order=$3
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flavor=$4
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name=$OUTPUT_DIR/$PACKAGE_NAME-$archvar-$flavor.config
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echo -n "Building $name ... "
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touch config-merging config-merged
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# apply based on order
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skip_if_missing=""
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for o in $order
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do
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for config in $(echo $configs | sed -e 's/:/ /g')
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do
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cfile="config-$o-$config"
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test -n "$skip_if_missing" && test ! -e $cfile && continue
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perl merge.pl $cfile config-merging > config-merged
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if [ ! $? -eq 0 ]; then
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die "Failed to merge $cfile"
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fi
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mv config-merged config-merging
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done
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# first configs in $order is baseline, all files should be
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# there. second pass is overrides and can be missing.
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skip_if_missing="1"
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done
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if [ "x$arch" == "xaarch64" ]; then
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echo "# arm64" > $name
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elif [ "x$arch" == "xppc64le" ]; then
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echo "# powerpc" > $name
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elif [ "x$arch" == "xs390x" ]; then
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echo "# s390" > $name
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elif [ "x$arch" == "xarmv7hl" ]; then
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echo "# arm" > $name
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elif [ "x$arch" == "xi686" ]; then
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echo "# i386" > $name
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else
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echo "# $arch" > $name
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fi
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sort config-merging >> $name
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rm -f config-merged config-merging
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echo "done"
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}
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function build_flavor()
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{
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flavor=$1
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control_file="priority".$flavor
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while read line
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do
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if [ $(echo "$line" | grep -c "^#") -ne 0 ]; then
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continue
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elif [ $(echo "$line" | grep -c "^$") -ne 0 ]; then
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continue
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elif [ $(echo "$line" | grep -c "^EMPTY") -ne 0 ]; then
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empty=$(echo "$line" | cut -f2 -d"=")
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for a in $empty
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do
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echo "# EMPTY" > $OUTPUT_DIR/$PACKAGE_NAME-$a-$flavor.config
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done
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elif [ $(echo "$line" | grep -c "^ORDER") -ne 0 ]; then
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order=$(echo "$line" | cut -f2 -d"=")
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for o in $order
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do
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glist=$(find $o -type d)
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for d in $glist
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do
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combine_config_layer $d
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done
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done
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else
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arch=$(echo "$line" | cut -f1 -d"=")
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configs=$(echo "$line" | cut -f2 -d"=")
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if [ -n "$SUBARCH" ]; then
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case $arch in
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$SUBARCH*)
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;;
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*)
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continue
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esac
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fi
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merge_configs $arch $configs "$order" $flavor
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fi
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done < $control_file
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}
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while read line
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do
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build_flavor $line
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done < flavors
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# A passed in kernel version implies copy to final location
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# otherwise defer to another script
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if test -n "$KVERREL"
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then
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for i in kernel-*.config
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do
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NEW="$(echo $i | sed "s/$PACKAGE_NAME-$SUBARCH/$PACKAGE_NAME-$KVERREL-$SUBARCH/")"
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mv $i $NEW
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done
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fi
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cleanup
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