Joe Negron wrote in a message to Mike Bilow:

MB> MASM 4.0 for DOS will produce code that will run under OS/2, after
  > all -- it's just an assembler that makes OBJ modules.  However,
  > MASM changed a lot of syntactical conventions from 5.1 to
  > 6.0, and this broke quite a lot of working assembly code
  > including the OS/2 include files.

 JN> Hasn't the same happened with some C/C++ compilers?

No, a C/C++ compiler is quite a lot more complicated than an assembler.  It
is possible to make a code generator that is independent of the operating
system -- Watcom C++ is an actual example -- but there is still startup
code and the run-time library that must contain some operating system
dependent parts.
 
-- Mike


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