Building math/octave with QT4?

[Gleb Popov]

On Wed, Jun 20, 2018 at 12:05 AM, Montgomery-Smith, Stephen <
stephen at missouri.edu> wrote:

> Dear Gleb,
>
> I am the maintainer of the math/octave port.  The following error was
> reported to me, which seems to be related to the devel/qt5-core port.
> Do you think it is likely that this problem is fixed by r472242 and
> r472262 which you committed recently?  I'm still using qt5-core-5.9.4_2,
> and I am unable to reproduce the error.
>
> If you are unable to answer, I'll go ahead and rebuild my ports to see
> what is going on.  But my life is very busy right now, so I would rather
> wait until you give me an answer.
>

Doesn't seem to be related with my commit at all. The most of the backtrace
is within QSql stuff and doesn't even touch QLockFile, which I patched.


> Thanks, Stephen
>
>
> -------- Forwarded Message --------
> Subject: Building math/octave with QT4?
> Date: Tue, 12 Jun 2018 13:19:27 -0700
> From: Steve Kargl <sgk at troutmask.apl.washington.edu>
> Reply-To: sgk at troutmask.apl.washington.edu
> To: freebsd-ports at freebsd.org
>
> Is it possible to build math/octave with QT4?
> The recent switch to require QT5 in r469260
> leads to an unusable octave (unless one's
> intention is to debug QT5).
>
> % gdb81
> /usr/local/libexec/octave/4.4.0/exec/amd64-portbld-freebsd12.0/octave-gui
> octave-gui.core
> > bt
> #0  0x00000002056b244d in QVariant::QVariant(QVariant const&) ()
>     from /usr/local/lib/qt5/libQt5Core.so.5
> [Current thread is 1 (LWP 101275)]
> (gdb) bt
> #0  0x00000002056b244d in QVariant::QVariant(QVariant const&) ()
>     from /usr/local/lib/qt5/libQt5Core.so.5
> #1  0x0000000227c233c9 in ?? ()
>     from /usr/local/lib/qt5/plugins/sqldrivers/libqsqlite.so
> #2  0x0000000227c1eba2 in ?? ()
>     from /usr/local/lib/qt5/plugins/sqldrivers/libqsqlite.so
> #3  0x0000000205117351 in QSqlResult::execBatch(bool) ()
>     from /usr/local/lib/qt5/libQt5Sql.so.5
> #4  0x0000000203cf9ca2 in ?? () from /usr/local/lib/qt5/libQt5Help.so.5
> #5  0x0000000203cfbd42 in ?? () from /usr/local/lib/qt5/libQt5Help.so.5
> #6  0x00000002054b24ea in ?? () from /usr/local/lib/qt5/libQt5Core.so.5
> #7  0x0000000200d7e426 in thread_start (curthread=0x232679100)
>      at /usr/src/lib/libthr/thread/thr_create.c:291
> #8  0x0000000000000000 in ?? ()
> Backtrace stopped: Cannot access memory at address 0x7fffbebf4000
>
> --
> Steve
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