From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 20 May 2015 02:13:22 +0200 From: Gilles Chanteperdrix Message-ID: <20150520001322.GI10686@hermes.click-hack.org> References: <555BA2F4.4030106@techfak.uni-bielefeld.de> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <555BA2F4.4030106@techfak.uni-bielefeld.de> Subject: Re: [Xenomai] rtdm_driver.h fails to build: implicit declaration of smp_mb__before_atomic_dec() List-Id: Discussions about the Xenomai project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Robert Haschke Cc: xenomai@xenomai.org On Tue, May 19, 2015 at 10:54:12PM +0200, Robert Haschke wrote: > I'm trying to build Xenomai 2.6.4 on linux 3.18.13 with i-pipe patch for > 3.18.12. > When enabling RTDM support, the compiler throws the following error: > > In file included from ../kernel/xenomai/skins/posix/syscall.c:40:0: > ../include/xenomai/rtdm/rtdm_driver.h: In function ‘rtdm_context_unlock’: > ../include/xenomai/rtdm/rtdm_driver.h:587:2: error: implicit declaration of > function ‘smp_mb__before_atomic_dec’ [-Werror=implicit-function-declaration] > smp_mb__before_atomic_dec(); > ^ > cc1: some warnings being treated as errors That question again. Xenomai developers do not have access to a crystal ball or to an IPOT network. Thus, a released version of Xenomai only supports the I-pipe patches which were released prior to its release. For this reason, Xenomai 2.6.4 does not support Linux kernel versions more recent than 3.14. For more recent releases, use the git repository. > > This function became deprecated in kernel 3.16 and was removed in 3.18. Ah, maybe this explain this commit then: https://git.xenomai.org/xenomai-2.6.git/commit/?id=d7f7e99ea19eb0dc13b1e02e633ec53ac9b89475 -- Gilles.