detect at compile time whether exceptions are disabled [duplicate]

Question

I'm trying to detect at compile time whether exceptions have been disabled with the (-fno-exceptions) switch. I've tried to evaluate:

noexcept(throw)

But this won't compile if the exceptions are disabled under both gcc and clang.

EDIT: Take a look here.

Answer 1

As always, it's fairly easy to check which macros are pre-defined for a particular compiler with a given set of command line parameters:

$ g++ -dM -E -x c++ - < /dev/null &> except.txt
$ g++ -dM -E -x c++ -fno-exceptions - < /dev/null &> no-except.txt
$ sdiff -s except.txt no-except.txt 
#define __EXCEPTIONS 1                            <
#define __cpp_exceptions 199711                   <
$