[mosh-users] Mosh-1.2.4 compilation issues on OpenBSD 5.3 (missing pselect)

[Keith Winstein]

Damon,

Jérémie (cc:ed here) has been very helpful in getting Mosh packaged
and buildable on OpenBSD. Maybe he can help us understand the
situation with the "pkg_add mosh" and whether we should clarify the
Web page. Or perhaps we just need to make another release including
Jeremie's patches to workaround the lack of pselect() in some versions
of OpenBSD. (The patches landed in Git in April but we haven't done a
release since then.)

Cheers,
Keith

On Sat, Oct 12, 2013 at 7:59 PM, Keith Winstein <keithw at mit.edu> wrote:
> Hello Damon,
>
> Please try compiling Mosh from the Git repository.
>
> Best regards,
> Keith
>
> On Oct 12, 2013 6:48 PM, "Damon Getsman" <damo.gets at gmail.com> wrote:
>>
>> Hello, everybody.  I just dug through the archives looking to see if there
>> might have been any workaround to this, but I haven't seen anything.  The
>> mosh website says that there is an OpenBSD pre-compiled package available
>> for mosh, but I guess that must've been a few versions ago, as I haven't
>> seen anything in the 5.x repositories as far as mosh, nor in the ports
>> directories.
>>
>> So anyway, I took it upon myself to compile things from scratch.
>> Everything went well up until ::pselect() was undeclared.  Here's the exact
>> compiler error:
>>
>> contract:/usr/src/mosh-1.2.4$ make
>> make  all-recursive
>> Making all in src
>> Making all in protobufs
>> make  all-am
>> Making all in util
>>   CXX    select.o
>> In file included from select.cc:33:
>> select.h: In member function 'int Select::select(int)':
>> select.h:139: error: '::pselect' has not been declared
>> *** Error 1 in src/util (Makefile:288 'select.o': @echo "  CXX   "
>> select.o;g++ -DHAVE_CONFIG_H -I. -I../..     -Wall  -fno-strict-overflow
>> ...)
>> *** Error 1 in src (Makefile:296 'all-recursive')
>> *** Error 1 in . (Makefile:337 'all-recursive')
>> *** Error 1 in /usr/src/mosh-1.2.4 (Makefile:255 'all')
>>
>> Anyway, I've found a couple of potential workarounds.  First, there is one
>> found at
>> http://openbsd.7691.n7.nabble.com/PATCH-net-mosh-and-pselect-td227394.html ;
>> unfortunately, this appears to apply to a version of mosh found in an
>> OpenBSD that has mosh in /usr/ports, which my 5.3 system most certainly does
>> not.
>>
>> Second, I did find raw source code for a pselect() function, but I'm not
>> really sure if it's going to be compatible with what this particular
>> application is going to use it for, it's been awhile since I worked with
>> C/C++.  I found that at
>> ftp://ftp.fr.openbsd.org/pub/OpenBSD/src/usr.sbin/nsd/compat/pselect.c , but
>> it was provided as a pselect() for 'nsd', not for any generic package.
>>
>> Anyway, any help that you guys could point me to or suggestions you can
>> offer would very much be appreciated.  Mosh rocks and I really want to have
>> it on my only externally-facing system (the BSD one).  Thanks in advance!
>>
>> -Damon Getsman
>>
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>