POSIX in g++

[Ian Lance Taylor]

"Peng Yu" <pengyu.ut@gmail.com> writes:

> There is an options -ansi to make g++ ANSI compatible. I'm wondering
> if there is an option to make g++ POSIX compatible. Or g++ is already
> POSIX compatible without an option?

POSIX itself specifies features macros which you may define to compile
your source code in a strict POSIX environment.  These are
_POSIX_SOURCE and _POSIX_C_SOURCE.  These affect the header files
rather than the libraries.  To get a strict POSIX compiler, use those
in conjunction with -ansi or -std.

Ian