Update README

README.md

@@ -1084,6 +1084,9 @@ Due to the unfortunate [weak](https://en.wikipedia.org/wiki/Strong_and_weak_typi
 you should turn incompatible pointer type warning into an error in your compiler.
 For GCC / CLANG, uses -Werror=incompatible-pointer-types
 
+For MS Visual C++ compiler , you need the following options:
+
+      /Zc:__cplusplus /Zc:preprocessor /D__STDC_WANT_LIB_EXT1__ /EHsc
 
 
 ## External Reference
@@ -7876,11 +7879,13 @@ that accept the generic interface (mainly \_call).
 
 This header is for [exception handling](https://en.wikipedia.org/wiki/Exception_handling).
 It provides basic functionnality for throwing exception and catching then.
-The setjmp and longjmp standard library functions are used to implement the try / catch / throw macro keywords.
+The setjmp and longjmp standard library functions (or some variants) are used to implement the try / catch / throw macro keywords.
 It doesn't support the finaly keyword.
 When building with a C++ compiler, theses macro keywords simply use the original C++ keyword in a way to match
 the specification below.
 
+The whole program shall be compiled with the same exact compiler and the same target architecture.
+
 Only one type of data is supported as exception. This is done to simplify the design and to force using exception
 as a general purpose error handlings. It should only be used for rare case of errors which cannot be dealt locally
 in the program being executed.