[swift-corelibs-dev] Defining _GNU_SOURCE for module-map-included headers

[Jordan Rose]

Hm. If this is the right setting to set on everybody's system, we could add it as part of Clang initialization (for the Clang inside Swift). Otherwise, you can use "-Xcc" to pass extra flags to Clang, in this case "-Xcc -D_GNU_SOURCE=1".

Hope that helps,
Jordan

> On Dec 20, 2015, at 2:29 , Dmitri Gribenko <gribozavr at gmail.com> wrote:
> 
> + swift-dev, Jordan
> 
> On Sun, Dec 20, 2015 at 2:21 AM, Dan Stenmark via swift-corelibs-dev
> <swift-corelibs-dev at swift.org> wrote:
>> I'm trying to invoke Linux's unshare() system call from Swift, but without much success.  From C, it requires _GNU_SOURCE to be #define'd before the #include <sched.h>.  The Glibc module map does indeed include sched.h, so the lack of _GNU_SOURCE appears to be the likely culprit.  What's the appropriate action to take here?
>> 
>> Dan
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> 
> 
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