Updated for Summer 2021

Signed-off-by: Prof. Ronald Moore <ronald.moore@h-da.de>

LLVM/cplusplus/README.md

@@ -17,6 +17,15 @@ in May 2017.
 This version can be fairly easily adpated to work with LLVM 3.9. 
 It does NOT work with earlier versions of LLVM.
 
+The current version was updated in Summer 2020 and worked with the current LLVM at that time.
+
+>
+> **WARNING** In 2021, with LLVM 11, some of this directory works, but some doesn't.
+> 
+> The broken parts will be fixed _soon_.
+> 
+
+
 All of the example files (fibonacci.cpp, ModuleMaker.cpp and toy*.cpp):
 
  - are available in the LLVM source tree, for example by running the
@@ -36,6 +45,7 @@ All of the example files (fibonacci.cpp, ModuleMaker.cpp and toy*.cpp):
 Still, it should be emphasized that there is nothing really new here -- apart 
 from the packaging, everything here is from the LLVM project!
 
+
 Manifest ("Table of Contents")
 ===============================
 
@@ -62,11 +72,11 @@ which does nothing but return a status of 5. LLVM
 bit code can be run using the LLVM "lli" tool.
 Thus, you should be able to do the following:
 
-```
-make ModuleMaker  
-./ModuleMaker >status5.bc  
-lli status5.bc  
-echo $? # should print "5"  
+```sh
+$ make ModuleMaker  
+$ ./ModuleMaker >status5.bc  
+$ lli status5.bc  
+$ echo $? # should print "5"  
 ```
 
 "Hello World" doesn't get much simpler than this!