[ipv6hackers] Definition of "struct ip6_opt" in Mac OS

Adrian Bool adrian.bool at revolution.net.eu
Thu Jul 19 21:42:33 CEST 2012

On Thu, Jul 19, 2012 at 8:27 PM, Adrian Bool
<adrian.bool at revolution.net.eu>wrote:

> If that's the case, is there any compile-time constant that I could use
>> to check the Xcode version?
> Not that I know of for Xcode.

I just remmbered that you can tell gcc to dump out all constants - looking
for Xcode in the list gives no results,

$ gcc -E -dM hello.c | grep -i xcode




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