New subject: [PATCH 2/2] package/busybox: Update stored config files

22 Feb 2021

This is a small script updating the stored busybox config files from
an extracted source tree. Basically it copies the the files keeping
directory hierarchy intact, adjusts contained 'source' calls for the new
path (relative to $TOPDIR) and prefixes all defined (and referenced)
symbols with 'BUSYBOX_'.
---
 package/busybox/extract_config.sh | 56 +++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100755 package/busybox/extract_config.sh

diff --git a/package/busybox/extract_config.sh b/package/busybox/extract_config.sh
new file mode 100755
index 0000000000000..638899f7ed4b3
--- /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 <<< $(grep -hr '^config ' config.new | cut -d'
' -f2)
+
+### customize busybox config system for OpenADK
+
+cd config.new
+
+# no extra mainmenu
+sed -i -e 's/^mainmenu/# mainmenu/' Config.in
+
+# prefix all symbols with BUSYBOX_ to create a namespace
+# limit replacement to lines containing given keywords to
+# not mess up help texts and prompts too much
+keywords='\\(config\\|depends\\|range\\|select\\|default\\|^if \\)'
+sympipe=$(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[@]}"
-- 
2.30.0


    

[PATCH 1/2] package/busybox: Implement config extractor