Re: [Boost-users] Why is BOOST_OS_WINDOWS defined on Linux

On Thu, 3 May 2018 at 14:49 David Demelier via Boost-users < boost-users@lists.boost.org> wrote:

Hello,

Everything is in the title, the following code compiles and shows "Windows" even though I'm running Fedora 28. I can't understand.

#include <iostream>

#include

int main() { #if defined(BOOST_OS_WINDOWS) puts("Windows"); #endif }

I'm using Boost 1.66 with GCC 8.0.1.

Regards,

-- David

Hi David, The correct way to check is not if BOOST_OS_WINDOWS is defined or not, but whether it's non-zero or not. #include <iostream> #include int main() { #if BOOST_OS_WINDOWS puts("Windows"); #endif } -- chris