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[gpsd-users] C11 support

From: Robin Schwab
Subject: [gpsd-users] C11 support
Date: Thu, 18 Aug 2016 00:49:31 +0200
User-agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.2.0

Dear list
When I compile gpsd 3.16 using scons I get a warning
Checking for C header file libkern/OSAtomic.h...
No memory barriers - SHM export and time hinting may not be reliable.

But when I run dpkg -l it reads
ii  cpp              4:4.9.2-2  armhf GNU C preprocessor (cpp)
ii  cpp-4.9          4.9.2-10   armhf GNU C preprocessor

As far as I understand memory barriers are part of c11. The compiler is new enough to provide C11 but it's not enabled.

Am I missing something? Or can the warning be ignored?

uname -a gives
Linux piaware 4.4.0-1-rpi2 #1 SMP Debian 4.4.6-1+rpi14 (2016-05-05) armv7l GNU/Linux


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