[Olsr-dev] using system-defined macros thruout, e.g. __linux__ and _WIN32

Henning Rogge (spam-protected)
Wed Aug 1 00:34:08 CEST 2012

I would be okay with this changes to get the code more consistent
(both itself and with other code). The makefile macros were defined
years and years ago and were just kept around.


On Tue, Jul 31, 2012 at 8:25 AM, Hans-Christoph Steiner
<(spam-protected)> wrote:
> I propose to use the platform detection macros that are defined by the compiler/system headers rather than using ones defined in the Makefile (i.e. -Dlinux) throughout the olsrd code.  It makes the platform detection independent of the build system, it is good form and standard practice, it makes the code more readable, etc.  I've seen -DUNIX mean GNU/Linux and -Dlinux mean UNIX, so even using a name like 'linux' does not always mean what the word says.  This is almost already the case in the current code, it already uses __cplusplus, __GNUC__, __FreeBSD__, __FreeBSD_kernel__, __APPLE__, __NetBSD__, __OpenBSD__, and __ANDROID__.
> I propose to:
> - remove -Dlinux from all Makefiles and switch to __linux__
> http://sourceforge.net/apps/mediawiki/predef/index.php?title=Operating_Systems#Linux
> - change WIN32 to _WIN32 since its the one Microsoft recommends and is supported by all Windows compilers: http://msdn.microsoft.com/en-us/library/ff540443.aspx
> I'll happily make these changes, or defer to anyone who wants to.
> .hc
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