Re: POSIX in g++

On Tue, Jul 15, 2008 at 5:57 PM, Ian Lance Taylor <iant <at> google.com> wrote:
> "Peng Yu" <pengyu.ut <at> 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
>