_Pragma takes a parenthesized string literal

[Ian Lance Taylor]

Jeffrey Walton <noloader@gmail.com> writes:

> I need to move the following into a define.
>
> // Windows, Linux, Apple
> #pragma message "Something interesting from cpp"

This the closest I can get.  You have to write "message" explicitly in
the usage.  I don't know how to avoid that, because string concatenation
is not done before _Pragma arguments are evaluated.

#define PRAGMA_MESSAGE(x) _Pragma(#x)
PRAGMA_MESSAGE(message "Something interesting from cpp")

Ian