x230: improve the build script

x230/.gitignore

@@ -1,3 +1,4 @@
 output
 x230_coreboot_seabios_*rom*
 build
+/config-*

x230/README.md

@@ -262,5 +262,5 @@ Mainly a tiny binary used by the Ethernet card and the Intel Management Engine.
 
 ## how to reproduce the release images
 * `git clone https://github.com/merge/skulls`
-* rename one of the included config files to `config-xxxxxxxxxx`.
-* The x230 directory's `./build.sh` should produce the exact corresponding release image file.
+* `cd skulls/x230`
+* `./build.sh` and choose the configuration you want to build

x230/build.sh

@@ -1,8 +1,79 @@
 #!/bin/bash
-ls -1 config* || exit 0
 . skulls_common.sh
 
 warn_not_root
 
+have_config=0
+
+usage()
+{
+	echo "Skulls for the X230"
+	echo "  Run this script to rebuild a released image"
+	echo ""
+	echo "Usage: $0 [-c <config_file>]"
+	echo ""
+	echo " -c <config_file>        to use for flashrom"
+}
+
+args=$(getopt -o c:h -- "$@")
+if [ $? -ne 0 ] ; then
+	usage
+	exit 1
+fi
+
+eval set -- "$args"
+while [ $# -gt 0 ]
+do
+	case "$1" in
+	-c)
+		CONFIGFILE=$2
+		have_config=1
+		shift
+		;;
+	-h)
+		usage
+		exit 1
+		;;
+	--)
+		shift
+		break
+		;;
+	*)
+		echo "Invalid option: $1"
+		exit 1
+		;;
+	esac
+	shift
+done
+
+if [ ! "$have_config" -gt 0 ] ; then
+	configs_available=$(ls -1 | grep config || true)
+	if [ -z "${configs_available}" ] ; then
+		echo "No config file found. Please add -c <file>"
+		echo ""
+		usage
+		exit 1
+	fi
+
+	prompt="Please select a configuration to use for building or start with the -c option to use a different one:"
+	options=( $(find -maxdepth 1 -name "*config*" -print0 | xargs -0) )
+
+	PS3="$prompt "
+	select CONFIGFILE in "${options[@]}" "Quit" ; do
+		if (( REPLY == 1 + ${#options[@]} )) ; then
+			exit
+
+		elif (( REPLY > 0 && REPLY <= ${#options[@]} )) ; then
+			break
+
+		else
+			echo "Invalid option. Try another one."
+		fi
+	done
+fi
+
+CONFIGFILE_READY=$(echo $CONFIGFILE | cut -d'-' -f2-)
+cp $CONFIGFILE $CONFIGFILE_READY
+
 cd ..
 ./build.sh --clean-slate --commit $(ls -1 x230/config-* | cut -c 13-22) x230