[m-users.] "posix" extra library won't compile

[Julien Fischer]

On Fri, 15 Mar 2019, Julien Fischer wrote:

>
> On Fri, 15 Mar 2019, Volker Wysk wrote:
>
>>  Am Donnerstag, 14. März 2019, 20:12:30 CET schrieb Volker Wysk:
>>>  Am Donnerstag, 14. März 2019, 19:31:42 CET schrieb Zoltan Somogyi:
>>> >  On Thu, 14 Mar 2019 19:25:29 +0100, Volker Wysk <post at volker-wysk.de>
>>  wrote:
>>> > > >  Exactly what command is giving you the above error? Give us all the
>>> > > >  details.>
>>> > > 
>>> > >  I've downloaded and installed a Mercury rodt just fine. The Mercury
>>> > >  source
>>> > >  code (including extras/) is in /usr/local/src/mercury-srcdist-
>>> > >  rotd-2019-01-03/. Inside of that is the "extras/posix" directory.
>>> > > 
>>> > >  All I've done is "mmc --make libposix" inside that directory. Just 
>>> > >  like
>>> > >  I've found it in the Mercury User's Guide, section 6.2.1.
>>> > 
>>> >  For me, that exact same command works just fine.
>>>
>>>  I've downloaded the latest r.o.d.t. and am compiling Mercury now. So I
>>>  can
>>>  find out if I can reproduce that you can't reproduce the problem. :-)
>>>
>>>  This will take another two-and-a-half hours.
>>
>>  I've installed the new mercury version, but the problem still occurs.
>
> The ROTDs haven't updated yet.  The second issue you are encountering
> appears to be due to changes to glibc.

Actually, not glibc, the explanation is about half way down:

https://wiki.ubuntu.com/ToolChain/CompilerFlags?action=show&redirect=CompilerFlags#-D_FORTIFY_SOURCE=2

It seems Ubuntu have started making the C compile with
-D_FORTIFY_SOURCE=2 by default and that will reject calls to open()
without a mode argument.

Julien.