> On Dec 29, 2023, at 14:07, Konstantin Belousov <kostik...@gmail.com> wrote: > > On Fri, Dec 29, 2023 at 01:50:34PM +0100, Dimitry Andric wrote: >> The problem is really that our kernel headers (those under sys/) require >> C99. The only thing that >> https://cgit.freebsd.org/src/commit/?id=a8b70cf26030d68631200619bd1b0ad35b34b6b8 >> did was move two static inline functions from sys/netinet/tcp_var.h to >> sys/netinet/tcp.h, and it looks like the former header is never directly >> included by ports. The latter is, so those ports should be switched to C99, >> or the sys/netinet/tcp.h header should be fixed to use __inline instead. >> > netinet/tcp.h is required by POSIX, and as far as we support applications > using C89, it must stay C89 compatible. > > But why userspace would need these newish accessors at all? IMO at least TCP is now using flags that are not contained in the th_flags field anymore, but also use the th_x2 field.
People were assuming that all flags are in th_flags and th_x2 is not used and used it for internal processing. This was causing problems. Using the accessor functions hides the split between th_flags and th_x2. See, for example, https://cgit.FreeBSD.org/src/commit/?id=a8b70cf26030d68631200619bd1b0ad35b34b6b8 <https://cgit.freebsd.org/src/commit/?id=a8b70cf26030d68631200619bd1b0ad35b34b6b8> > for userspace they do not add any value except additional namespace pollution. > They should be hidden under #ifdef _KERNEL. That might be possible. A kernel build with this completes. Haven't checked a buildlworld. Will report when its done. Best regards Michael > >> -Dimitry >> >>> On 29 Dec 2023, at 13:30, Nuno Teixeira <edua...@freebsd.org> wrote: >>> >>> (...) >>> -ansi == Same as -std=c89 >>> >>> So it seems correct to remove it when -std=c99 is used. >>> >>> Nuno Teixeira <edua...@freebsd.org> escreveu no dia sexta, 29/12/2023 à(s) >>> 12:03: >>> >>> >>> >>> I think we have two options: >>> 1. Build the ports with a C version of at least C99. >>> >>> - Adding USE_CSTD=c99 >>> - Removing -ansi: >>> --- configure.orig 2023-12-29 11:54:11 UTC >>> +++ configure >>> - CFLAGS="$CFLAGS $(DSO_CFLAGS) -ansi -Wall" >>> + CFLAGS="$CFLAGS $(DSO_CFLAGS) -Wall" >>> >>> Fix build. >>> >>> Notes: >>> >>> Adding USE_CSTD=c99 doesn't fix build by itself like we seen on some ports >>> that were fixed by it. >>> >>> Something have changed from current 1500007 to 1500008. >>> >>> 2. Remove the inline from tcp_[gs]et_flags(). >>> >>> Best regards >>> Michael >>>> -- >>>> Nuno Teixeira >>>> FreeBSD Committer (ports) >>> >>> >>> >>> -- >>> Nuno Teixeira >>> FreeBSD Committer (ports) >>> >>> >>> -- >>> Nuno Teixeira >>> FreeBSD Committer (ports) >> >>
