Re: [Texmacs-dev] Qt TeXmacs-1.0.7.7, Qt-4.6.3 compilation error

[Andrey G. Grozin]

On Sat, 30 Oct 2010, Andrey G. Grozin wrote:
> i686-pc-linux-gnu-g++ -ISystem -ISystem/Boot -ISystem/Classes -ISystem/Files 
> -ISystem/Link -ISystem/Misc -ISystem/Language -IKernel/Abstractions 
> -IKernel/Containers -IKernel/Types -IData/Convert -IData/Drd -IData/History 
> -IData/Observers -IData/String -IData/Tmfs -IData/Tree -IGuile 
> -IGraphics/Bitmap_fonts -IGraphics/Fonts -IGraphics/Gui 
> -IGraphics/Mathematics -IGraphics/Renderer -IPlugins -I/usr/include/freetype2 
> -pthread -DQT_NO_DEBUG -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED 
> -I/usr/share/qt4/mkspecs/linux-g++ -I. -I/usr/include/qt4/QtCore 
> -I/usr/include/qt4/QtGui -I/usr/include/qt4 -I. -I. -DQTTEXMACS -Wall 
> -Wno-return-type -O2 -march=core2 -mtune=generic -mssse3 -mfpmath=sse -pipe 
> -fno-rtti -fno-exceptions -c ./Plugins/Imlib2/imlib2.cpp -o Objects/imlib2.o
> In file included from /usr/include/qt4/QtCore/qsize.h:45,
>                 from /usr/include/qt4/QtCore/qrect.h:45,
>                 from /usr/include/qt4/QtCore/QRect:1,
>                 from Plugins/Qt/qt_utilities.hpp:14,
>                 from ./System/Files/image_files.cpp:26:
> /usr/include/qt4/QtCore/qnamespace.h:1220: error: expected identifier before 
> numeric constant
> /usr/include/qt4/QtCore/qnamespace.h:1220: error: expected unqualified-id 
> before numeric constant
> ./Plugins/Imlib2/imlib2.cpp: In function ?void imlib2_initialize()?:
> ./Plugins/Imlib2/imlib2.cpp:57: warning: dereferencing type-punned pointer 
> will break strict-aliasing rules
> ./Plugins/Imlib2/imlib2.cpp:58: warning: dereferencing type-punned pointer 
> will break strict-aliasing rules
> ./Plugins/Imlib2/imlib2.cpp:59: warning: dereferencing type-punned pointer 
> will break strict-aliasing rules
> ./Plugins/Imlib2/imlib2.cpp:60: warning: dereferencing type-punned pointer 
> will break strict-aliasing rules
> ./Plugins/Imlib2/imlib2.cpp:61: warning: dereferencing type-punned pointer 
> will break strict-aliasing rules
> ./Plugins/Imlib2/imlib2.cpp:63: warning: dereferencing type-punned pointer 
> will break strict-aliasing rules
> ./Plugins/Imlib2/imlib2.cpp:64: warning: dereferencing type-punned pointer 
> will break strict-aliasing rules
> ./Plugins/Imlib2/imlib2.cpp:65: warning: dereferencing type-punned pointer 
> will break strict-aliasing rules
> ./Plugins/Imlib2/imlib2.cpp:66: warning: dereferencing type-punned pointer 
> will break strict-aliasing rules
> ./Plugins/Imlib2/imlib2.cpp:67: warning: dereferencing type-punned pointer 
> will break strict-aliasing rules
> make[1]: *** [Objects/image_files.o] Error 1
> make[1]: *** Waiting for unfinished jobs....
> make[1]: Leaving directory 
> `/var/tmp/portage/app-office/texmacs-1.0.7.7/work/TeXmacs-1.0.7.7-src/src'
> make: *** [TEXMACS] Error 2
Can anybody who knows how to compile TeXmacs with --enable-qt comment 
about this?

I am the maintainer of the TeXmacs package in Gentoo. Several versions 
ago, there were 2 options for Gentoo users: compile TeXmacs with 
--disable-qt or --enable-qt. Then the latter option started to produce 
compilation errors, and I had to remove it. It seems others are able to 
compile TeXmacs with --enable-qt. But this does not work on Gentoo, and 
this is strange, because Gentoo uses rather standard tools and libraries, 
practically without deviations from the upstream.

So, it would be good to enable Gentoo users to build and install 
Qt-TeXmacs. It this requires some patch, I am ready to include it, but I 
cannot figure out what and how to patch exactly.

Andrey