Dne 10.1.2019 v 05:24 Takashi Sakamoto napsal(a): > Hi, > > I'm an author of axfer. > > On Tue, 08 Jan 2019 18:00:18 +0100, Jay Foster wrote: >> I am attempting to build the 1.1.8 release of alsa-utils and getting >> an error about POLLRDNORM (and others) undefined. This error comes >> from axfer/waiter-select.c. axfer/waiter-select.c includes >> "waiter.h", which includes "poll.h". This build is for a linux >> target. > >> On Wed, 09 Jan 2019 17:22:36 +0100, Jay Foster wrote: >>> On 1/9/2019 3:10 AM, Takashi Iwai wrote: >>>> Which libc are you using? The POSIX man page (man poll.h) mentions >>>> POLLRDNORM defined there, at least, on my system with glibc 2.27. >>> >>> This is a legacy ARM product using glibc 2.9. > > I'm sorry for the FTBFS but it's out of my notice to build with too-old glibc. > > Here, a history of glibc for related events: > * glibc-2.9: 2008/11/13 > * your version > * glibc-2.10: 2009/5/9 > * support XPG7/POSIX-2008 > * add '__USE_XOPEN2k8' for the avove > * glibc-2.19: 2014/2/7 > * add '_DEFAULT_SOURCE' macro > * XPG7/POSIX-2008 is a default behaviour > * glibc-2.20: 2014/9/7 > * obsolete '_BSD_SOURCE' and '_SYSV_SOURCE' macros > * glibc-2.28: 2018/8/1 > * used my environment (Ubuntu 18.10) > > The macros, POLLRDNORM and the others, seems to be defined officially in > POSIX-2008 and nowadays glibc supports POSIX-2008 as a default. This is > the reason that I've never faced your issue in my development period. > I guess it's the reason that nothing noted in man of poll(2) and > select(2). > > I need a bit time to judge whether it's woth to support such old-glibc. > Just removal of the newly-introduced macros is a simple solution. We may add those definitions to CFLAGS (-D) through configure for the old libs. Or just used #ifdef in the waiter-select.c - it's only one place which uses this at this moment, but it's only quick workaround. Jaroslav -- Jaroslav Kysela <perex@xxxxxxxx> Linux Sound Maintainer; ALSA Project; Red Hat, Inc. _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
