--- a/vcmake.bat	Mon Oct 17 12:09:34 2016 +0200
+++ b/vcmake.bat	Mon Oct 17 12:09:35 2016 +0200
@@ -14,18 +14,35 @@
 make.exe -N -f bc.mak -DUSEVC=1 %DEFINES% %*
 
 
+
+@if not exist experiments goto skip_stx_libjava_experiments
 @echo "***********************************"
-@echo "Buildung stx/libjava/experiments
+@echo "Building stx/libjava/experiments
 @echo "***********************************"
 @pushd experiments
 @call vcmake %1 %2 || exit /b "%errorlevel%"
 @popd
+@goto done_stx_libjava_experiments
+:skip_stx_libjava_experiments
+@echo "###################################"
+@echo "FOLDER MISSING: stx/libjava/experiments
+@echo "###################################"
+exit /b 1
+:done_stx_libjava_experiments
 
+@if not exist tools goto skip_stx_libjava_tools
 @echo "***********************************"
-@echo "Buildung stx/libjava/tools
+@echo "Building stx/libjava/tools
 @echo "***********************************"
 @pushd tools
 @call vcmake %1 %2 || exit /b "%errorlevel%"
 @popd
+@goto done_stx_libjava_tools
+:skip_stx_libjava_tools
+@echo "###################################"
+@echo "FOLDER MISSING: stx/libjava/tools
+@echo "###################################"
+exit /b 1
+:done_stx_libjava_tools