* Compilation with GCC 10 and -fno-common fails for 1.14.5
@ 2020-06-11 9:33 Wynn Wolf Arbor
2020-06-11 12:02 ` Ingo Schwarze
0 siblings, 1 reply; 2+ messages in thread
From: Wynn Wolf Arbor @ 2020-06-11 9:33 UTC (permalink / raw)
To: discuss
Hi,
GCC 10 has switched from -fcommon to -fno-common as a default, breaking
compilation with the current release of mandoc:
compat_getline.c:5: multiple definition of `dummy';
compat_err.o:mandoc-1.14.5/compat_err.c:5: first defined here
[..]
When multiple unneeded (ie HAVE_* is set) compatibility files are
included in a compiler invocation, the dummy declarations 'int dummy'
clash with one another.
Ordinarily I would have sent a patch along, but I am not sure what
solution is preferred here. I can think of the following:
* Simply have a unique name for each dummy declaration per file.
* Make sure that unneeded compatibility files are not included in the
build. This seems a decent albeit more complex and disruptive
solution.
I tried checking whether the development branch has this fixed already,
but it seems that the CVS web interface [1] is down at the moment (500
Internal Server Error). I also sadly couldn't check out the CVS:
cvs [checkout aborted]: end of file from server (consult above messages if any)
There were no previous messages, and I don't know how to make CVS more
verbose.
I did not find anything through a cursory check of the mandoc-source
mailing list archive, so I'm assuming this issue is still present.
Thanks for your time!
[1] https://cvsweb.bsd.lv/mandoc/
--
Wolf
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* Re: Compilation with GCC 10 and -fno-common fails for 1.14.5
2020-06-11 9:33 Compilation with GCC 10 and -fno-common fails for 1.14.5 Wynn Wolf Arbor
@ 2020-06-11 12:02 ` Ingo Schwarze
0 siblings, 0 replies; 2+ messages in thread
From: Ingo Schwarze @ 2020-06-11 12:02 UTC (permalink / raw)
To: Wynn Wolf Arbor; +Cc: discuss
Hi Wolf,
Wynn Wolf Arbor wrote on Thu, Jun 11, 2020 at 11:33:41AM +0200:
> When multiple unneeded (ie HAVE_* is set) compatibility files are
> included in a compiler invocation, the dummy declarations 'int dummy'
> clash with one another.
I'll consider that separately.
> I tried checking whether the development branch has this fixed already,
> but it seems that the CVS web interface [1] is down at the moment (500
> Internal Server Error).
> [1] https://cvsweb.bsd.lv/mandoc/
I just repaired that.
> I also sadly couldn't check out the CVS:
> cvs [checkout aborted]: end of file from server
> (consult above messages if any)
And i repaired that, too.
Thanks for the reports!
Ingo
P.S. @kristaps:
I suspect both got broken by the recent operating system upgrade to
OpenBSD 6.7, which changed the ABI for syscalls between libc and
kernel. So the pre-upgrade programs no longer ran on the new kernel.
Now, both the anoncvs and cvsweb chroot contain up-to-date binaries
again.
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2020-06-11 9:33 Compilation with GCC 10 and -fno-common fails for 1.14.5 Wynn Wolf Arbor
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