[mythtv-users] Cross-compiled win32 binaries failing to run

[Lawrence Rust]

On Tue, 2011-12-20 at 23:43 +0200, Markus Mattinen wrote:
> >
> > If you're using mythbuild.sh then the script should be setting the flags
> > appropriately.  Just for the record what does mythtv/config.log contain?
> >
> config.log:
>    ./configure --prefix=/home/markus/packages/usr/cross-windows-mythtv-git/mythinstall
> --runprefix=. --qmake=/home/markus/packages/usr/cross-windows-mythtv-git/mythbuild/qt-everywhere-opensource-src-4.7.0/bin/qmake
> --enable-cross-compile --cross-prefix=i486-mingw32-
> --target_os=mingw32 --arch=x86
> --sysinclude=/home/markus/packages/usr/cross-windows-mythtv-git/mythinstall/include
> --extra-cflags=-I/home/markus/packages/usr/cross-windows-mythtv-git/mythinstall/include
> --extra-cxxflags=-I/home/markus/packages/usr/cross-windows-mythtv-git/mythinstall/include
> --extra-libs=-L/home/markus/packages/usr/cross-windows-mythtv-git/mythinstall/lib
> --disable-avdevice --disable-avfilter --enable-libfftw3
> --disable-joystick-menu --disable-directfb --disable-lirc
> --disable-hdhomerun --disable-symbol-visibility --compile-type=debug

No problems here.

> > I have just built git master using mythbuild.sh - it needs this patch to
> > compile:
> > --- a/mythtv/libs/libmythtv/dtvrecorder.cpp
> > +++ b/mythtv/libs/libmythtv/dtvrecorder.cpp
> > @@ -330,7 +330,7 @@ static QDateTime ts_to_qdatetime(
> >     uint64_t pts, uint64_t pts_first, QDateTime &pts_first_dt)
> >  {
> >     if (pts < pts_first)
> > -        pts += 0x1FFFFFFFF;
> > +        pts += Q_UINT64_C(0x1FFFFFFFF);
> >     QDateTime dt = pts_first_dt;
> >     return dt.addMSecs((pts - pts_first)/90);
> >  }
> >
> > The built mythfrontend will run using Wine but needs "-O
> > ThemePainter=qt -O UIPainter=Qt" options.
> >
> >
> 
> Interesting that I did not need to add such a patch. It always
> compiles without any errors, it's just the final product that won't
> run.

This leads me to believe that it's a 64-bit issue - the patch is not
necessary on a 64-bit system.  However, if the target is 32-bit (which
it should be here) then a conforming cross compiler should issue a
diagnostic (error).  So maybe it's the 64-bit mingw tools that are
producing incorrect output.  I'm sticking with a 32-bit PAE system for
the present because of these niggles.  It might prove useful to setup a
32-bit VirtualBox (or similar) environment to cross compile, which is a
known good route.

Have you tried setting the cpu type i.e. adding "-c i686" to the
mythbuild.sh invocation?  Maybe that might provide a solution.

-- 
Lawrence