🔨 Better build, envs, tests

buildroot/bin/build_example

@@ -5,7 +5,9 @@
 # Usage: build_example internal config-home config-folder
 #
 
-. mfutil
+HERE=`dirname $0`
+
+. "$HERE/mfutil"
 
 # Require 'internal' as the first argument
 [[ "$1" == "internal" ]] || { echo "Don't call this script directly, use build_all_examples instead." ; exit 1 ; }
@@ -36,6 +38,6 @@ unset IFS; set +f
 echo -e "\n#define NO_CONTROLLER_CUSTOM_WIRING_WARNING" >> Marlin/Configuration.h
 
 echo "Building the firmware now..."
-$HERE/mftest -s -a -n1 || { echo "Failed"; exit 1; }
+"$HERE/mftest" -s -a -n1 || { echo "Failed"; exit 1; }
 
 echo "Success"