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Re: [Texmacs-dev] problem with compiling QGuiApplication not found

From: Dmitry
Subject: Re: [Texmacs-dev] problem with compiling QGuiApplication not found
Date: Mon, 14 Oct 2024 18:30:10 +0300
My laptop not so fast to compile texmacs)
With QT_SELECT=qt5 CXXFLAGS=-fPIC LDFLAGS=-fPIC ./configure --with-qt-find-method=pkgconfig it fails at final linking:

cd src; make -r -f makefile link=shared
make[1]: Entering directory 'texmacs/src'
g++ Objects/texmacs.o Objects/tm_ostream.o Objects/fast_alloc.o Objects/tree.o Objects/ANSIFontWriter.o Objects/AbstractContentContext.o Objects/AbstractWrittenFont.o
 Objects/ArrayOfInputStreamsStream.o Objects/Ascii7Encoding.o Objects/CFFANSIFontWriter.o Objects/CFFDescendentFontWriter.o
................................... many lines skipped ..................
Objects/virtual_font.o Objects/vpenalty.o Objects/web_files.o Objects/wencoding.o Objects/widget.o Objects/xml.o Objects/fakedlopen.o Objects/aeskey.o Objects/aescrypt.o Objects/aestab.o Objects/aes_modes.o Objects/aes_ni.o -Ltexmacs/TeXmacs/lib -lm -Wl,-rpath, -lQt5Svg -lQt5PrintSupport -lQt5Widgets -lQt5Gui -lQt5Core -Wall -Wno-return-type -O3 -fexpensive-optimizations -fPIC -fPIC -L/usr/local/guile-1.8.7/lib -L/usr/lib -Wl,-rpath,/usr/lib/x86_64-linux-gnu -Wl,-Bdynamic -lz -lpng -lQt5Svg -lQt5PrintSupport -lQt5Widgets -lQt5Gui -lQt5Core -lfreetype -lguile -lgmp -lcrypt -lm -lltdl -o Objects/texmacs-shared.bin
/usr/bin/ld: Objects/unix_sys_utils.o: undefined reference to symbol 'pthread_create@@GLIBC_2.2.5'
//lib/x86_64-linux-gnu/libpthread.so.0: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
makefile:440: recipe for target 'Objects/texmacs-shared.bin' failed
make[1]: *** [Objects/texmacs-shared.bin] Error 1
make[1]: Leaving directory 'texmacs/src'
Makefile:57: recipe for target 'TEXMACS' failed
make: *** [TEXMACS] Error 2

So far the only way I can make texmacs - adjust src/makefile by hand

On Mon, Oct 14, 2024 at 5:38 PM Liza Belos <belos@lix.polytechnique.fr> wrote:

The error indicate that you have a version of qt that need fPIC during the compilation (strange that it is not in the CXXFLAGS of the pkgconfig files...).

Can you configure with :

QT_SELECT=qt5 CXXFLAGS=-fPIC LDFLAGS=-fPIC ./configure --with-qt-find-method=pkgconfig

Le 14/10/2024 à 16:34, Dmitry a écrit :
Hello Liza,

With --with-qt-find-method=pkgconfig .make fails almost instantly with:

cd src; make -r -f makefile link=shared
make[1]: Entering directory 'texmacs/src'
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/Document -IData/String -IData/Tmfs -IData/Tree -IData/Parser -IScheme -IGraphics/Bitmap_fonts -IGraphics/Fonts -IGraphics/Gui -IGraphics/Mathematics -IGraphics/Renderer -IGraphics/Handwriting -IGraphics/Types -IGraphics/Pictures -IGraphics/Spacial -IGraphics/Colors -IPlugins -IPlugins/Unix -ITypeset -ITypeset/Bridge -ITypeset/Concat -ITypeset/Page -IEdit -IPlugins -ITexmacs -std=c++11 -include config.h -I/usr/include/x86_64-linux-gnu/qt5/QtCore -I/usr/include/x86_64-linux-gnu/qt5 -I/usr/include/x86_64-linux-gnu/qt5/QtGui -I/usr/include/x86_64-linux-gnu/qt5/QtWidgets -I/usr/include/x86_64-linux-gnu/qt5/QtSvg -I/usr/include/x86_64-linux-gnu/qt5/QtPrintSupport -DQTTEXMACS -Wall -Wno-return-type -O3 -fexpensive-optimizations -c ./Texmacs/Texmacs/texmacs.cpp -o Objects/texmacs.o
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmargins.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qrect.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QRect:1,
                 from Plugins/Qt/qt_utilities.hpp:16,
                 from Plugins/Qt/qt_widget.hpp:18,
                 from Plugins/Qt/qt_simple_widget.hpp:18,
                 from Edit/editor.hpp:20,
                 from Texmacs/server.hpp:14,
                 from ./Texmacs/Texmacs/texmacs.cpp:25:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1135:4: error: #error "You must build your code with position independent code if Qt was built with -reduce-relocations. " "Compile your code with -fPIC (-fPIE is not enough)."
 #  error "You must build your code with position independent code if Qt was built with -reduce-relocations. "\
    ^~~~~
makefile:355: recipe for target 'Objects/texmacs.o' failed
make[1]: *** [Objects/texmacs.o] Error 1
make[1]: Leaving directory 'texmacs/src'
Makefile:57: recipe for target 'TEXMACS' failed
make: *** [TEXMACS] Error 2

with QT_SELECT=qt5  ( without --with-qt-find-method=pkgconfig  ) the same error as before:
./Plugins/Unix/unix_system.cpp:15:10: fatal error: QGuiApplication: No such file or directory

BTW: make clean don't delete src/makefile

On Mon, Oct 14, 2024 at 10:46 AM Liza Belos <belos@lix.polytechnique.fr> wrote:

Hello Dmitry,

Could you try compiling with the following configure option: --with-qt-find-method=pkgconfig .
On some Ubuntu installations, I also found that setting the environment variable QT_SELECT=qt5 can resolve certain issues.

Best regards,
Liza

Le 13/10/2024 à 22:19, Dmitry a écrit :
Hello, JFYI

I had a problem compiling texmacs ( tried last master
c6287b64afe6aeb57613f57b5c2cf0e85d6ae8c4 and v2.1.2 ) :
make[1]: Entering directory 'texmacs/src'
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/Document -IData/String -IData/Tmfs -IData/Tree
-IData/Parser -IScheme
  -IGraphics/Bitmap_fonts -IGraphics/Fonts -IGraphics/Gui
-IGraphics/Mathematics -IGraphics/Renderer -IGraphics/Handwriting
-IGraphics/Types
  -IGraphics/Pictures -IGraphics/Spacial -IGraphics/Colors -IPlugins
-IPlugins/Unix
  -pthread -I/usr/local/guile-1.8.7/include
-I/usr/local/guile-1.8.7/include/guile -include config.h
-DQT_DEPRECATED_WARNINGS -DQT_NO_DEBUG -DQT_PRINTSUPPORT_LIB
-DQT_SVG_LIB -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_CORE_LIB -I.
-I/usr/lib/x86_64-linux-gnu/qt5/mkspecs/linux-g++ -D_REENTRANT
  -DQTTEXMACS -Wall -Wno-return-type -O3 -fexpensive-optimizations -c
./Plugins/Unix/unix_system.cpp -o Objects/unix_system.o
./Plugins/Unix/unix_system.cpp:15:10: fatal error: QGuiApplication: No
such file or directory

After some research I found that adding $(CXXQT) flags to $(os_obj) helps:
$ diff  src/makefile.orig src/makefile
343c343
<     $(call cxx_incl,$(os_incl) $(CXXGUILE))
---

    $(call cxx_incl,$(os_incl) $(CXXGUILE) $(CXXQT))

Maybe my ubuntu too old?
$ cat /etc/os-release
NAME="Ubuntu"
VERSION="18.04.6 LTS (Bionic Beaver)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 18.04.6 LTS"

$ g++ --version
g++ (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0

Cordialement.
--
  Dmitry

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--

Liza Belos
Laboratoire d'Informatique de l'École Polytechnique

Mail LIX : belos@lix.polytechnique.fr
Mail CNRS : liza.belos@cnrs.fr
Téléphone : 06 86 43 86 39
Bureau : 1013


--
--
  Dmitry
--
Liza Belos
Laboratoire d'Informatique de l'École Polytechnique

Mail LIX : belos@lix.polytechnique.fr
Mail CNRS : liza.belos@cnrs.fr
Téléphone : 06 86 43 86 39
Bureau : 1013


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  Dmitry
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