git: Bump CSTD to gnu11 for world and kernel.

[Sascha Wildner]

commit 6a8dae245892a6597947ffc791aac71bc217acb4
Author: Sascha Wildner <saw at online.de>
Date:   Mon Dec 19 12:13:58 2022 +0100

    Bump CSTD to gnu11 for world and kernel.
    
    In practice, I don't think this will change a lot for base code, and I
    am doing it mainly for contrib/ code which might in certain cases use
    different paths (for example zstd will). Also affected might be dports
    which use base's share/mk infrastructure, of which there are a few.
    
    I have compared the object directories with all temporary files (.s, .i)
    between a LINT64 kernel compiled with -std=gnu11 vs. one built with c99
    and there were no differences whatsoever.
    
    Thanks to tuxillo for testing with a full bulk build.
    
    Note that the kernel was previously using c99 and has now been switched
    to gnu11, not c11. This is because we were always using GNU extensions
    in kernel code, so c99 should really have been gnu99 always.
    
    Also note that we could in theory have switched to gnu17 directly since
    c17 only addressed some defects in c11 and did not add new features,
    but I chose to use 11 because our secondary compiler does not support
    17.
    
    Reminded-by: Peeter Must

Summary of changes:
 share/man/man5/make.conf.5 | 7 ++-----
 share/mk/bsd.sys.mk        | 2 +-
 sys/conf/bsd.kern.mk       | 2 +-
 3 files changed, 4 insertions(+), 7 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/6a8dae245892a6597947ffc791aac71bc217acb4


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