Hi Keith! On Fri, Jan 02, 2015 at 08:15:00PM -0800, Keith Packard wrote: > Thomas Klausner <w...@netbsd.org> writes: > > > Hi! > > > > This version doesn't build for me on NetBSD-7.99.3/amd64 and gcc-4.8.4 with: > > > > CC xshmfence_pthread.lo > > xshmfence_pthread.c: In function 'xshmfence_init': > > xshmfence_pthread.c:122:5: error: implicit declaration of function > > 'pthread_mutexattr_setpshared' [-Werror=implicit-function-declaration] > > pthread_mutexattr_setpshared(&mutex_attr, PTHREAD_PROCESS_SHARED); > > ^ > > xshmfence_pthread.c:122:5: warning: nested extern declaration of > > 'pthread_mutexattr_setpshared' [-Wnested-externs] > > xshmfence_pthread.c:126:5: error: implicit declaration of function > > 'pthread_condattr_setpshared' [-Werror=implicit-function-declaration] > > pthread_condattr_setpshared(&cond_attr, PTHREAD_PROCESS_SHARED); > > ^ > > xshmfence_pthread.c:126:5: warning: nested extern declaration of > > 'pthread_condattr_setpshared' [-Wnested-externs] > > > > "man pthread_condattr_setpshared" comes up empty too. Is there another > > more portable function you could use here? > > This code hasn't changed since version 1.1.
You are right. 1.1. doesn't work either. > I believe both of these are > part of the POSIX threads API, as described in the single unix spec > here: > > http://www.unix.org/version2/whatsnew/login_threads.html I think you are right. They are not on that page, but on http://pubs.opengroup.org/onlinepubs/9699919799/functions/pthread_mutexattr_setpshared.html http://pubs.opengroup.org/onlinepubs/9699919799/functions/pthread_condattr_setpshared.html > If the NetBSD mutexes can be shared across processes, and yet doesn't > have these functions, then it's probably reasonable to add tests to the > build process that enable the library even in the absence of them. I'm told that NetBSD mutexes can not be shared across processes. I'll file a bug report so NetBSD will hopefully provide these. Is there a way libxshmfence can work without them? According to https://www.gnu.org/software/gnulib/manual/html_node/pthread_005fmutexattr_005fsetpshared.html they are missing on more systems. Thomas _______________________________________________ xorg@lists.x.org: X.Org support Archives: http://lists.freedesktop.org/archives/xorg Info: http://lists.x.org/mailman/listinfo/xorg Your subscription address: %(user_address)s
