diff -r c82d46627c72 -r 33bc4ae5d7cf src/main/resources/make/configure.vm
--- a/src/main/resources/make/configure.vm	Sun Dec 15 14:35:58 2024 +0100
+++ b/src/main/resources/make/configure.vm	Sun Dec 15 14:45:53 2024 +0100
@@ -207,11 +207,12 @@
         "--infodir="*)        infodir=${D}{ARG#--infodir=} ;;
         "--mandir"*)          mandir=${D}{ARG#--mandir} ;;
         "--localedir"*)       localedir=${D}{ARG#--localedir} ;;
-        "--help"*) printhelp; abort_configure ;;
-        "--debug")           BUILD_TYPE="debug" ;;
-        "--release")         BUILD_TYPE="release" ;;
+        "--help"*)            printhelp; abort_configure ;;
+        "--debug")            BUILD_TYPE="debug" ;;
+        "--release")          BUILD_TYPE="release" ;;
     #foreach( $opt in $options )
         "--${opt.argument}="*) ${opt.varName}=${D}{ARG#--${opt.argument}=} ;;
+        "--${opt.argument}")  echo "option '$ARG' needs a value:"; echo "  $ARG=${opt.valuesString}"; abort_configure ;;
     #end
     #foreach( $feature in $features )
         "--enable-${feature.arg}") ${feature.varName}=on ;;