-----Original Message----- From: boost-users-bounces@lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Igor R Sent: Wednesday, November 11, 2009 1:57 PM To: boost-users@lists.boost.org Subject: Re: [Boost-users] [config] disabling _MSC_EXTENSIONS disables win32
The point is that with /Za you can't #include windows.h or use any platform specific features, so that makes it very hard (impossible?) to compile code that is binary compatible between /Za and not /Za.
Ok, I see now, I jumped to conclusions too quickly... So it turns out that /Za is absolutely useless for any win-based development, which is very frustrating.
But NOT useless for detecting potential problems with *other* platforms. So *testing* it using /Za isn't useless, for the tiny cost (and admittedly modest likelihood of finding problems). If /Za isn't possible, then it warns that there is a significant risk it won't work on other platforms. (But not *certain* to fail because the coding may carefully cope with multiple platforms - like Boost.Filesystem). Paul --- Paul A. Bristow Prizet Farmhouse Kendal, UK LA8 8AB +44 1539 561830, mobile +44 7714330204 pbristow@hetp.u-net.com