I try to build x86 application on x86_64 platform (Fedora16). In this application I'm using Qt and build system is cmake.
In CMakeLists.txt I'm using:
find_package(Qt4 REQUIRED qtmain QtCore QtGui QtWebKit)
include(${QT_USE_FILE})
cmake command for generate Makefile like this:
cmake -DCMAKE_CXX_FLAGS="-fpermissive -m32"
-DCMAKE_CXX_LINKER_PREFERENCE="-m32"
-DCMAKE_EXE_LINKER_FLAGS="-m32"
-DCMAKE_SHARED_LINKER_FLAGS="-m32"
So, after compiling linker cannot find compatible Qt library. Error like this:
/usr/bin/ld: skipping incompatible /usr/lib64/libQtWebKit.so when searching for -lQtWebKit
It's ok. In /usr/lib64 library has x64 platform. Desired library in /usr/lib, and they exist! But I don't understand, why FindQt4 not recognize platform? This script set following variable: QT_LIBRARY_DIR, QT_LIBRARIES and so one. Such variables set to following:
-- QT_LIBRARY_DIR: /usr/lib64
-- QT_LIBRARIES: optimized;/usr/lib64/libQtWebKit.so;debug;/usr/lib64/libQtWebKit_debug.so;optimized;/usr/lib64/libQtXmlPatterns.so;debug;/usr/lib64/libQtXmlPatterns_debug.so;optimized;/usr/lib64/libQtGui.so;debug;/usr/lib64/libQtGui_debug.so;optimized;/usr/lib64/libQtNetwork.so;debug;/usr/lib64/libQtNetwork_debug.so;optimized;/usr/lib64/libQtCore.so;debug;/usr/lib64/libQtCore_debug.so
My question: why not /usr/lib? and how can i fix it?
Probably because FindQt4 module knows nothing about -m32 flag.
Try to set QT_LIBRARY_DIR explicitly.
Related
I have built Qt 5 libs from source into Ubuntu 12.04 and made a Qt test app. In .pro file I have written QT += core gui webkitwidgets to use Qwebview in my test project.
But when I run qmake into Qt creator then it gives me error:
Unknown module(s) in QT: webkitwidgets
I think webkit or webkitwidgets module is not build by source when I built Qt 5 libs from source.
So I have build qtwebkit or webkitwdgtes module from source as per below.
cd qtwebkit
qmake
make -jX
where X is number of cores * 2 + 1
But when I run make command then I got below errors.
StringImpl.cpp:(.text+0x64ad): undefined reference to u_strToUpper_51'
StringImpl.cpp:(.text+0x6636): undefined reference to u_toupper_51'
DatePrototype.cpp:(.text+0x328): undefined reference to udat_open_51'
DatePrototype.cpp:(.text+0x366): undefined reference to udat_close_51'
JSGlobalObjectFunctions.cpp:(.text+0x99f): undefined reference tou_charType_51'
StringImpl.cpp:(.text+0xa00): undefined reference tou_foldCase_51'
CollatorICU.cpp:(.text+0x1f1): undefined reference to ucol_getLocaleByType_51' CollatorICU.cpp:(.text+0x20f): undefined reference toucol_getAttribute_51'
CollatorICU.cpp:(.text+0x25b): undefined reference to ucol_open_51'
CollatorICU.cpp:(.text+0x27f): undefined reference toucol_open_51'
CollatorICU.cpp:(.text+0x2a4): undefined reference to ucol_setAttribute_51'
and many more such undefined reference errors.
Also I have found that qtwebkit module uses ICU library (which are missing at my machine).
So how can I build ICU libraries into Ubuntu so that qtwebkit module can take reference of complied ICU libraries and I can able to fix these reference error and build qtwebkit successfully.
I have fixed a similar error by removing ICU libraries from Qt/lib folder.
If there is another version of ICU installed to os libs, it makes conflict.
Did you try this?:
sudo apt-get install libqt5webkit5-qmlwebkitplugin libqt5webkit5.
RESOURCES += \
resources.qrc
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets webkit webkitwidgets
However, and even when I made it work for my project, webkit gives more issues down the road, like being missing from the UI toolbar or not compiling at the time to publish your programme to the Store. I would suggest to look into alternative solutions like
QWebEngineView.
Try installing the package with apt-get:
sudo apt-get install libqt5webkit5-dev
Win 7 32, Qt Creator 3.0 and 3.1beta tried
I try to compile a project with Clang in Qt Creator. According to "Qt Creator and Clang" I have set PATH / LLVM_INSTALL_DIR .
LLVM was downloaded from here. http://llvm.org/releases/download.html . Settings in Qt Creator as shown below (screenshots). When I run qmake, I get 'g++' is not recognized as an internal or external command, operable program or batch file.
Do I miss something in the big picture? Do I need to install a special Qt version (compiled for Clang)? I have a Qt 5.2 for MSVC and Qt 5.2. for MinGw on my disk.
I have tried 3.1beta as this reads as CLANG is supported, maybe I understand it wrong.
Compiler settings in Creator:
Kit:
Clang for Win32 is not supported by the stock qmake environment. Anyway, you can follow this answer to get it work. After that specify the exact spec for generating Makefile:
qmake -spec win32-clang.
I'm trying to compile a project using cmake. The instructions given to me was that Qt 4.8 is needed. Downloaded it from qt-project.org/downloads. Compiled and installed Qt 4.8:
mazdak#lnxamindai> qmake -query
QT_INSTALL_PREFIX:/usr/local/Trolltech/Qt-4.8.5
QT_INSTALL_DATA:/usr/local/Trolltech/Qt-4.8.5
QT_INSTALL_DOCS:/usr/local/Trolltech/Qt-4.8.5/doc
QT_INSTALL_HEADERS:/usr/local/Trolltech/Qt-4.8.5/include
QT_INSTALL_LIBS:/usr/local/Trolltech/Qt-4.8.5/lib
QT_INSTALL_BINS:/usr/local/Trolltech/Qt-4.8.5/bin
QT_INSTALL_PLUGINS:/usr/local/Trolltech/Qt-4.8.5/plugins
QT_INSTALL_IMPORTS:/usr/local/Trolltech/Qt-4.8.5/imports
QT_INSTALL_TRANSLATIONS:/usr/local/Trolltech/Qt-4.8.5/translations
QT_INSTALL_CONFIGURATION:/etc/xdg
QT_INSTALL_EXAMPLES:/usr/local/Trolltech/Qt-4.8.5/examples
QT_INSTALL_DEMOS:/usr/local/Trolltech/Qt-4.8.5/demos
QMAKE_MKSPECS:/usr/local/Trolltech/Qt-4.8.5/mkspecs
QMAKE_VERSION:2.01a
QT_VERSION:4.8.5
However, when compiling the project I received the following error:
root#lnxamindai> cmake .
-- Setting flags for GNU GCC
-- REQUIRED_VARS (missing: QTMOBILITY_INCLUDE_DIR QTMOBILITY_MULTIMEDIAKIT_INCLUDE_DIR QTMOBILITY_MULTIMEDIAKIT_LIBRARY VERSION_VAR QTMOBILITY_VERSION)
Qt QTOPENGL library not found.
-- Buiding ManyEarsLib Library...
-- Buiding RTAudio Library...
-- Found jack: /usr/lib/libjack.so
ALSA lib : -lasound -lpthread
Qt QTOPENGL library not found.
CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
Please set them or make sure they are set and tested correctly in the CMake files:
OPENGL_INCLUDE_DIR (ADVANCED)
used as include directory in directory /home/mazdak/dev/ManyEars/manyears/QtGUI
QTMOBILITY_MULTIMEDIAKIT_LIBRARY (ADVANCED)
linked by target "ManyEars" in directory /home/mazdak/dev/ManyEars/manyears/QtGUI
-- Configuring incomplete, errors occurred!
CMakeLists.txt:
(...)
IF (NOT MANYEARS_GUI_DISABLED)
SET(QT_USE_QTNETWORK TRUE)
SET(QT_USE_QTSVG TRUE)
SET(QT_USE_QTXML TRUE)
SET(QT_USE_QTSCRIPT TRUE)
SET(QT_USE_QTOPENGL TRUE)
SET(QT_USE_QTMULTIMEDIA TRUE)
find_package(QtMobility COMPONENTS MultimediaKit)
find_package(Qt4 4.8.0 QUIET)
if (QTMOBILITY_FOUND)
MESSAGE("QT_MOBILITY_INCLUDE_DIR : ${QTMOBILITY_INCLUDE_DIRS} QT_MOBILITY_LIB: ${QTMOBILITY_LIBRARIES}")
ENDIF (QTMOBILITY_FOUND)
if(QT4_FOUND AND (QT_QTMULTIMEDIA_FOUND OR QTMOBILITY_FOUND))
include(${QT_USE_FILE})
else(QT4_FOUND AND (QT_QTMULTIMEDIA_FOUND OR QTMOBILITY_FOUND))
MESSAGE("WARNING : ManyEars GUI will not be compiled because Qt4 not found or obsolete. You need Qt 4.8 or higher.Try using the latest QtSDK from http://qt-project.org")
MESSAGE("DEBUG: QT4_FOUND: ${QT4_FOUND} QT_MULTIMEDIA_FOUND: ${QT_QTMULTIMEDIA_FOUND} QT_MOBILITY_FOUND: ${QTMOBILITY_FOUND}")
SET(MANYEARS_GUI_DISABLED TRUE)
endif(QT4_FOUND AND (QT_QTMULTIMEDIA_FOUND OR QTMOBILITY_FOUND))
ELSE (NOT MANYEARS_GUI_DISABLED)
MESSAGE("ManyEars GUI disabled.")
ENDIF (NOT MANYEARS_GUI_DISABLED)
#Files excluded from package
set(CPACK_SOURCE_IGNORE_FILES
"build"
"bin"
${CPACK_SOURCE_IGNORE_FILES}
".svn"
)
#include files
(...)
IF (UNIX)
#########################################
# Packaging stuff for sources (All UNIX)
#########################################
SET(CPACK_SOURCE_GENERATOR "TGZ")
SET(CPACK_RESOURCE_FILE_LICENSE "${PROJECT_SOURCE_DIR}/COPYING.TXT")
SET(CPACK_PACKAGE_NAME "ManyEars")
SET(CPACK_PACKAGE_DESCRIPTION_SUMMARY "ManyEars")
SET(CPACK_PACKAGE_VENDOR "Francois Grondin, Dominic Letourneau")
SET(CPACK_PACKAGE_DESCRIPTION_FILE "${PROJECT_SOURCE_DIR}/README.TXT")
SET(CPACK_PACKAGE_CONTACT "blablablabla")
(...)
ENDIF(UNIX)
(...)
INCLUDE(CPack)
This is confusing me, shouldn't the OpenGL library be installed?
This is confusing me, shouldn't the OpenGL library be installed?
It's not complaining about OpenGL. It's complainting about Qt's OpenGL module QtOpenGL which is a different thing. Most likely your custom build of Qt doesn't include the QtOpenGL module. You've to go back building Qt and take extra care that you enable build of the QtOpenGL module.
After some research I found out that I needed to install some development packages if I was compiling from the source code.
apt-get install libfontconfig1-dev libfreetype6-dev libx11-dev libxext-dev libxfixes-dev libxi-dev libxrender-dev libxcb1-dev libx11-xcb-dev libxcb-glx0-dev libxcb-keysyms1-dev libxcb-image0-dev libxcb-shm0-dev libxcb-icccm4-dev libxcb-sync0-dev libxcb-xfixes0-dev libxcb-shape0-dev libxcb-randr0-dev libxcb-render-util0-dev
When configuring the Qt source code I had forgot to specify that I wanted to install the OpenGL module and the Multimedia Kit. I just naturally ran "configure" without any options and hoped for the best.
./configure --help
Specifies that I needed -multimedia and -opengl.
When I executed configure with the correct options the issue was resolved.
./configure -multimedia -opengl
Note that the multimedia kit needs gstreamer installed.
I've try few things but I still have this error when trying to cmake for blackfin:
CMake Error at CMakeLists.txt:116 (message):
Fatal error: QT (version >= 4.5.0) required. Cmake tries to detect QT4 by
searching for 'qmake' in your PATH.If you have QT4 installed, make sure
qmake is found in your PATH. If you compiled QT4 yourself make sure your
new qmake ist found _first_ in your PATH.
I'm trying to compile the source of musescore 0.9.5 to keep it compatible with the existing version of QT in uClinux options
What I did is to compile the uClinux kernel with QT lib so I can have the suitable embedded QT.
then I modified the Makefile of musescore to build with uclinux compilers. I've try different things so I show here the latest trial:
bfin:
mkdir build;
mkdir install; \
cd build;
cmake -DCMAKE_TOOLCHAIN_FILE=bfin.cmake -DCMAKE_VERBOSE_MAKEFILE=TRUE -\
DQT_QMAKE_EXECUTABLE=/home/william/Development_new/Music_Recognition/code/uCLin\
ux/rev2011R1/uclinux-dist/lib/qt-embedded/build-qt-embedded-linux-opensource-sr\
c-4.5.1/bin -libdir=/home/william/Development_new/Music_Recognition/cod\
e/uCLinux/rev2011R1/uclinux-dist/lib/qt-embedded/build-qt-embedded-linux-openso\
urce-src-4.5.1/lib \
-DCMAKE_INSTALL_PREFIX="${PREFIX}" \
mscore;
in the CMakeLists.txt I did add:
link_directories(/home/william/Development_new/Music_Recognition/code/uCLinux/r\
ev2011R1/uclinux-dist/lib/qt-embedded/build-qt-embedded-linux-opensource-src-4.\
5.1/bin)
SET(CMAKE_MODULE_PATH /home/william/Development_new/Music_Recognition/code/uCLi\
nux/rev2011R1/uclinux-dist/lib/qt-embedded/build-qt-embedded-linux-opensource-s\
rc-4.5.1/bin)
SET(CMAKE_PREFIX_PATH /home/william/Development_new/Music_Recognition/code/uCLi\
nux/rev2011R1/uclinux-dist/lib/qt-embedded/build-qt-embedded-linux-opensource-s\
rc-4.5.1/bin)
SET(QT_QMAKE_EXECUTABLE /home/william/Development_new/Music_Recognition/code/uC\
Linux/rev2011R1/uclinux-dist/lib/qt-embedded/build-qt-embedded-linux-opensource\
-src-4.5.1/bin)
my bfin.cmake look like that:
# this one is important
SET(CMAKE_SYSTEM_NAME Linux)
#this one not so much
SET(CMAKE_SYSTEM_VERSION 1)
#
SET (BFIN "/opt/uClinux/bfin-uclinux")
# specify the cross compiler
SET(CMAKE_C_COMPILER ${BFIN}/bin/bfin-uclinux-gcc)
SET(CMAKE_CXX_COMPILER ${BFIN}/bin/bfin-uclinux-g++)
SET(CMAKE_LINKER ${BFIN}/bin/bfin-uclinux-ld)
#/opt/uClinux/bfin-uclinux/bfin-uclinux/runtime/usr/lib
LINK_DIRECTORIES("${BFIN}/usr/lib")
SET(CMAKE_FIND_ROOT_PATH
/opt/uClinux/bfin-uclinux/bfin-uclinux
/opt/uClinux/bfin-linux-uclibc
/opt/uClinux/bfin-linux-uclibc/bfin-linux-uclibc/runtime)
# search for programs in the build host directories
SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
# for libraries and headers in the target directories
SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
SET(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
Thanks in advance for the help,
William
You need to put qmake in your $PATH. If you prefer to use QT_QMAKE_EXECUTABLE it has to point to the actual qmake binary and not the directory.
That being said, MuseScore 0.9.5 is a very very old version of MuseScore, the current version is 1.1 and 1.2 is coming soon. Check http://musescore.org for more information about MuseScore and don't hesitate to contact the developers on #musescore on freenode.net or on the developer mailing list at http://musescore.org/mailing-list
I want to use Matlab's C API within QT (http://www.mathworks.com/help/techdoc/matlab_external/f39876.html#bsfvqhp-1) under Windows for opening a .mat file. In my .pro file I have included
INCLUDEPATH += "C:\Program Files\MATLAB\R2010b\extern\include"
which works fine (the code compiles). But when trying to link the libmat.lib file (I have read the .dll files cannot be linked directly) using
LIBS += -L"C:\Program Files\MATLAB\R2010b\extern\lib\win32\microsoft" -llibmat
the application crashes on execution. The error given says [file].exe exited with code -1073741515
I'm neither a QT nor a Windows expert but for this project I am forced to use both (I guess it would be easier to fix this in GNU/Linux) so any help would be appreciated. Using Windows XP, QT version 4.7.0 with Qt Creator 2.0.1, and Matlab R2010b.
The last output from the compiler just in case it is useful:
g++ -enable-stdcall-fixup -Wl,-enable-auto-import -Wl,-enable-runtime-pseudo-reloc -mthreads -Wl -Wl,-subsystem,windows -o debug/MainUI.exe debug/main.o debug/maingui.o debug/matparser.o debug/matutils.o debug/moc_maingui.o -L'c:/Qt/2010.05/qt/lib' -lmingw32 -lqtmaind "-LC:\Program Files\MATLAB\R2010b\extern\lib\win32\microsoft" -llibmat -lQtGuid4 -lQtCored4
I just tested building a simple C program that uses the MAT-File Interface Library with no problems. The example file is located in: matlabroot/examples/eng_mat/matcreat.c. I am compiling using MinGW on a Windows XP 32-bit machine. Here is the Makefile I used:
# root directory of MATLAB installation
MATLABROOT="/c/Program Files/MATLAB/R2010b"
.PHONY : all clean run
all: matcreat
matcreat:
gcc ${MATLABROOT}/extern/examples/eng_mat/matcreat.c -o matcreat \
-I${MATLABROOT}/extern/include \
-L${MATLABROOT}/extern/lib/win32/microsoft -llibmat -llibmx
clean:
rm -rf matcreat *.exe *.mat
run:
# UNIX uses LD_LIBRARY_PATH to find libs at runtime, Windows/MinGW uses PATH
#PATH=${MATLABROOT}/bin/win32:"${PATH}" ./matcreat
I suspect that the Matlab library will have been compiled with MSVC and since you say you are compiling your own code with MingW I would imagine the two are incompatible.
Have a look at the MingW page on mixing compilers for more information.