1 files changed, 56 insertions, 0 deletions
diff --git a/package/busybox/extract_config.sh b/package/busybox/extract_config.sh
new file mode 100755
index 000000000..1d2b08f0f
--- /dev/null
+++ b/package/busybox/extract_config.sh
@@ -0,0 +1,56 @@
+#!/bin/bash
+
+[[ -d "$1" ]] || {
+	echo "Usage: $(basename $0) <busybox_sourcedir>"
+	exit 1
+}
+
+bbsrc="$(realpath $1)"
+cd $(dirname $0)
+
+[[ -e config.new ]] && {
+	echo -n "config.new exists already. delete? [y|n] "
+	read ans
+	case "$ans" in
+	y|Y)
+		rm -rf config.new
+		;;
+	n|N)
+		;;
+	*)
+		echo "what is '$ans'?"
+		exit 1
+	esac
+}
+mkdir -p config.new
+
+# store config paths relative to $bbsrc into an array
+readarray -t configs <<< $(cd "$bbsrc"; find . -type f -name Config.in)
+
+# copy each config into config.new
+for config in "${configs[@]}"; do
+	mkdir -p config.new/$(dirname $config)
+	cp "$bbsrc/$config" "config.new/$config"
+done
+
+# store defined config symbols into an array
+readarray -t symbols <<< $(grep -hr '^config ' config.new | cut -d' ' -f2)
+
+### customize busybox config system for OpenADK
+
+cd config.new
+
+# no extra mainmenu, allow replacing PREFIX
+sed -i -e 's/^mainmenu/# mainmenu/' -e 's,./_install,@IDIR@,' Config.in
+
+# prefix all symbols with BUSYBOX_ to create a namespace
+# limit replacement to lines containing given keywords to
+# not mess up help texts and prompts too much
+keywords='\(config\|depends\|range\|select\|default\|^if \)'
+sympipe=$(IFS='|'; echo "${symbols[*]}" | sed -e 's/|/\\|/g')
+sympipe_s='/'$keywords'/s/\b\('$sympipe'\)\b/BUSYBOX_\1/g'
+
+# fix path of all sourced files
+source_s='s,^\(source *\)\([^ ]*\)$,\1package/busybox/config/\2,'
+
+sed -i -e "$sympipe_s" -e "$source_s" "${configs[@]}"