While using the libxl library in QT(c++) I got this error
undefined reference to `xlCreateBookW'
I have tried the setup in their website, https://www.libxl.com/setup.html
I added :
INCLUDEPATH = C:\libxl-4.0.4.0\include_cpp
LIBS += C:\libxl-4.0.4.0\lib\libxl.lib
to my project.pro and the file bin/libxl.dll to the project directory. It didn't work instead the error show up, how can I solve it please?
the code is in here https://www.libxl.com/home.html , i don't know i couldn't add it
i solved the problem actually the customer support guy i emailed him,
he told me to choose the bin which has the same version of my compiler (mine is 64bit) so you have to choose the bin and the lib also the same version and the path:
for my case (Qt_6_2_3_MinGW_64_bit compiler )
INCLUDEPATH = C:/libxl-4.0.4.0/include_cpp
LIBS += C:/libxl-4.0.4.0/lib64/libxl.lib
in the .pro file also you have to copy the libxl.dll from
C:\libxl-4.0.4.0\bin64 (for my case)
and thank you.
Related
I am trying to build an application in QT that uses the libmodbus library. I am using MinGW 5.3 (Windows 7). The application will build without an error, but crashes when it attempts to run. The debug message says:
During startup program exited with code 0xc0000135
If I double-click the created executable file, there is an error that says:
libmodbus-5.dll is missing
from my computer.
Libmodbus was built with the same compiler. The include files are located in ../../codelibrary/MinGW63/libmodbus-master/src and the linker files are located in ../../codelibrary/QtMinGW53/libmodbus-master/src/.libs (.libs folder has both libmodbus.dll.a and libmodbus-5.dll).
If I add this library with Qt's 3rd party library wizard, then I get the following in my .pro file:
win32: LIBS += -L$$PWD/../../codelibrary/QtMinGW53/libmodbus-master/src/.libs/ -llibmodbus.dll
INCLUDEPATH += $$PWD/../../codelibrary/QtMinGW53/libmodbus-master/src
DEPENDPATH += $$PWD/../../codelibrary/QtMinGW53/libmodbus-master/src
win32:!win32-g++: PRE_TARGETDEPS += $$PWD/../../codelibrary/QtMinGW53/libmodbus-master/src/.libs/libmodbus.dll.lib
else:win32-g++: PRE_TARGETDEPS += $$PWD/../../codelibrary/QtMinGW53/libmodbus-master/src/.libs/liblibmodbus.dll.a
This gives me the error:
-1: error: No rule to make target '../../codelibrary/MinGW63/libmodbus-master/src/.libs/liblibmodbus.dll.a', needed by 'debug\QTRosemount.exe'. Stop.
I then tried changing the .pro file to:
LIBS += -L$$PWD/../../codelibrary/QtMinGW53/libmodbus-master/src/.libs/libmodbus-5.dll
INCLUDEPATH += $$PWD/../../codelibrary/QtMinGW53/libmodbus-master/src
DEPENDPATH += $$PWD/../../codelibrary/QtMinGW53/libmodbus-master/src
PRE_TARGETDEPS += $$PWD/../../codelibrary/QtMinGW53/libmodbus-master/src/.libs/libmodbus.dll.a
This is when it will build without error and crash right away with code 0xc0000135 and a missing libmodbus-5.dll. I have tried many variations of the .pro paths that get this same error.
Note: I have been able to run console applications in Codeblocks with this library, not sure what I am running into with Qt.
How to fix this?
you can use an INSTALL SET and append it to the INSTALL list, as shown in QT documentation and illustrated below:
documentation.path = /usr/local/program/doc
documentation.files = docs/*
INSTALLS += documentation
For convenience, you may also use QMAKE_PRE_LINK. Now that you have some options, you may find further information in stackoverflow, such as in posts like this one.
Alternatively, I found that DEPENDPATH was incorrect. I have a folder in libmodbus that this needs to point to:
DEPENDPATH += $$PWD/../../codelibrary/QtMinGW53/libmodbus-master/src/.deps
The program compiles correctly with this changed
I'm new to the OpenCV / QT environment (and in programming in general). I'm trying to run this code:
https://github.com/Terranlee/Realtime_EVM
Can someone please tell me step by step what I need to install/compile in order to run this script on Windows 10? Not sure what versions to install or if it even matters.
I've tried following directions from here (https://wiki.qt.io/How_to_setup_Qt_and_openCV_on_Windows) but I keep getting 'undefined reference' errors which means I'm not referencing the libraries properly... or I need to edit the code somehow to point to my libraries but I'm not quite sure what to edit and how.
Thanks in advance and please excuse my noobieness!
-jay
Reply to answer
I compiled OpenCV using CMake per the wiki guide using the following commands:
mingw32-make -j 8
mingw32-make install
Once this was done, I opened Qt Creator and opened the Github EVM code by downloading the zip file then extracting it and opening the rvm.pro file.
Without making any changes, I tried to build the code and my first error was that it couldn't find "opencv_world310.dll" library.
I searched for it and found the file locally in the "E:\opencv\build\x64\vc14\bin" directory so I edited the rvm.pro file to look in that directory like so:
win32 {
OPENCVFOLDER = E:/_CODE_/_EXTERNAL_/OpenCV/my_git_build/
OPENCVVERSION = 310
INCLUDEPATH += E:\opencv\build\install\include
INCLUDEPATH += E:\opencv\build\x64\vc14\lib
CONFIG(release, debug|release) {
LIBS += -LE:\opencv\build\x64\vc14\lib
LIBS += -lopencv_world$${OPENCVVERSION}
}
CONFIG(debug, debug|release) {
DEFINES += DEBUG_MODE
LIBS += -LE:\opencv\build\x64\vc14\lib
LIBS += -lopencv_world$${OPENCVVERSION}d
}
This got rid of the initial error but then I get several 'undefined reference' issues afterward:
C:\Eulerian Real-Time OpenCV build\Realtime-Video-Magnification-master\build-rvm-Desktop_Qt_5_9_0_MinGW_32bit-Debug\debug\main.o:-1: In function `ZN2cv6StringD1Ev':
E:\opencv\build\include\opencv2\core\cvstd.hpp:664: error: undefined reference to `cv::String::deallocate()'
C:\Eulerian Real-Time OpenCV build\Realtime-Video-Magnification-master\build-rvm-Desktop_Qt_5_9_0_MinGW_32bit-Debug\debug\main.o:-1: In function `ZN2cv6StringaSERKS0_':
E:\opencv\build\include\opencv2\core\cvstd.hpp:672: error: undefined reference to `cv::String::deallocate()'
C:\Eulerian Real-Time OpenCV build\Realtime-Video-Magnification-master\src\main\threads\CaptureThread.h:42: error: undefined reference to `cv::VideoCapture::~VideoCapture()'
...... there are about 50 of these issues so I won't list them all.
Is it just a matter of correctly referencing the library?
In summary I'm just trying to run the Github code using Qt Creator, mingGW, CMake, & OpenCV. Please let me know how I need to edit the .pro file to link the library properly.
My OpenCV is in e:\opencv
Thanks again for the help and for your patience!
-Jay
There is very little info on what are the steps you are taking currently. Do you want to use Visual Studio / mingw? Here are some pointers:
You can open the pro file using Qt Creator
You can generate a Visual Studio compatible solution using qmake -spec <spec of the Visual Studio to use> -tp vc, to choose the spec see this answer.
With either of this you should have Qt includes/libraries set up.
The bad thing about the project is, that if you look at the .pro file, it explicitly uses Linux friendly include paths:
INCLUDEPATH += /usr/local/include \
/usr/local/include/opencv \
/usr/local/include/opencv2
LIBS += `pkg-config --libs opencv` -ldl
So, you will have to then add the include/library paths to OpenCV either inside Visual Studio or in the .pro file, if you are using Qt Creator. For example the link you used in your post on Qt/OpenCV has Windows friendly ones:
LIBS += D:\opencv-build\bin\libopencv_core320.dll
LIBS += D:\opencv-build\bin\libopencv_highgui320.dll
LIBS += D:\opencv-build\bin\libopencv_imgcodecs320.dll
LIBS += D:\opencv-build\bin\libopencv_imgproc320.dll
LIBS += D:\opencv-build\bin\libopencv_features2d320.dll
LIBS += D:\opencv-build\bin\libopencv_calib3d320.dll
So please explain in more detail what have you done so far, and which references (Qt/OpenCV) exactly are missing.
I'm working on a Qt5/QtQuick/QML application that's supposed to use QxtGlobalShortcut for hotkey control when the application is hidden or out of focus. I've been developing it using QtCreator on Linux, and I'm not entirely familiar with Linux development so I may have missed something simple.
First off, I tried cloning the master branch of the Qxt git repo from here. But for some reason ./configure failed to create a makefile according to an error that I was getting from make and make install. I'm not very experienced in building other people's projects/libraries from source, and the output I was getting from ./configure wasn't specific enough for me to figure out what was going on..
So instead, I decided to grab libqxt-dev from (X)ubuntu's APT repo. After it finished installing I added these lines to the bottom of my QtCreator project file:
INCLUDEPATH = usr/include
CONFIG += qxt
QXT += core gui
After setting up a basic global shortcut based totally off the Qxt documentation's example. I got a few compilation errors. First of all, the Qxt seem to use:
#include <QxtGlobalShortcut>
But QtCreator couldn't find that file, so I changed it to this:
#include <qxt/QxtGui/QxtGlobalShortcut>
Now it could find the Global Shortcut class header, and QtCreator stopped grumbling at me. Unfortunately, upon compilation QtCreator shot out this error message:
/usr/include/qxt/QxtGui/qxtglobalshortcut.h:28: error: qxtglobal.h: No such file or directory
I think this is caused by a problem in my project's INCLUDE path or something, but even having tried changing my projects INCLUDE path to this:
INCLUDEPATH = usr/include
usr/include/qxt/QxtCore
usr/include/qxt/QxtGui
CONFIG += qxt
QXT += core gui
I still get the same error message that QxtGlobal.h (which is being #included in QxtGlobalShortcut.h) can't be found..
So, I'm really not sure what I've done wrong, and I'm out of ideas about how to fix this.
Hopefully someone can help me understand what step I've skipped so that I can continue coding! Thanks!
EDIT: Here's what I have for my entire Qt project .pro file:
TEMPLATE = app
QT += qml quick
SOURCES += main.cpp \
Gamepad.cpp \
Script.cpp \
System.cpp
RESOURCES += qml.qrc
# Additional import path used to resolve QML modules in Qt Creator's code model
QML_IMPORT_PATH =
# Default rules for deployment.
include(deployment.pri)
HEADERS += \
Gamepad.h \
Script.h \
System.h
LIBS += -L/usr/lib -lSDL2
CONFIG += qxt
QXT += core gui
Everything before LIBS was automatically generated by QtCreator for my project. I added the LIBS, CONFIG, and QXT elements as per the user instructions for SDL2 and Qxt.
This is a big problem here:
INCLUDEPATH = usr/include
1) You are using relative path from the current working directory, so not /usr/include from the root of the filesystem.
2) You are deleting everything in the INCLUDEPATH because you set rather than append with +=.
3) It is unnecessary to add that line anyway since /usr/include will be looked up by default.
4) Even if it was not, you have #include "qxtglobal.h" instead of #include <qxtglobal.h>.
I would suggest to delete that line and then it should just work.
I have been trying to use QCA (Link) on my Windows PC for a couple of days now, works fine on my linux box, just can't get it working with Windows.
So i followed all the instructions for installing QCA and then the ossl plugin for QCA. The QCA works fine but for some reason the plugin isn't showing up in my Qt Creator nor am I able to use some of the functions in the plugin.
I used the qcatool2.exe that comes with QCA to check my plugins using
qcatool2 plugins --debug
and get this error message:
plugin: qca-ossl2.dll: failed to load: The plugin 'C:/Qt/2010.05/qt/plugins/crypto/qca-ossl2.dll' uses incompatible Qt library. Expected build key "Windows mingw debug full-config", got "Windows mingw release full-config"
Now this seems to me as if qt requires the plugin to be compiled in debug mode (as to get the build key to contain debug rather than release) so I added
CONFIG += debug
to my plugin's project file and ran qmake and mingw32-make as usual but this seems to have had no effect.
My project file for the plugin is now:
TEMPLATE = lib
CONFIG += plugin
QT -= gui
DESTDIR = lib
VERSION = 2.0.0
unix:include(conf.pri)
windows:CONFIG += crypto
windows:include(conf_win.pri)
CONFIG += create_prl
SOURCES = qca-ossl.cpp
windows:{
load(winlocal.prf)
isEmpty(WINLOCAL_PREFIX) {
error("WINLOCAL_PREFIX not found. See http://delta.affinix.com/platform/#winlocal")
}
OPENSSL_PREFIX = $$WINLOCAL_PREFIX
DEFINES += OSSL_097
INCLUDEPATH += $$OPENSSL_PREFIX/include
LIBS += -L$$OPENSSL_PREFIX/lib
LIBS += -llibeay32 -lssleay32
LIBS += -lgdi32 -lwsock32
}
!debug_and_release|build_pass {
CONFIG(debug, debug|release) {
mac:TARGET = $$member(TARGET, 0)_debug
windows:TARGET = $$member(TARGET, 0)d
}
}
CONFIG += debug
Has anyone got any ideas? If you need anymore details just ask, I've tried to be as thorough as possible. Thanks
Tom
I've been struggling with a similar situation: qca-ossl builds fine on linux and not at all on windows. I just hit a breakthrough which might help you as well.
Versions and Patches
qtsdk-2010.05
qca-2.0.3
qca-ossl-r1190163 (from the repository)
openssl-1.0.0b
First of all, if you're using a newer version (0.9.7+, I think) of OpenSsl, you may need to use the qca-ossl version from the repository since it patches some incompatibilities. I also needed to comment out some lines in the new qca-ossl.cpp file dealing with SHA224, SHA256, SHA384, and SHA512 to avoid build errors. I'm using qca-ossl for the ciphers, so I'm not worried about hashing and didn't investigate the errors very much.
Fixing It
The windows build problems were many fold for me, but most of them stem from the shoddy build setup for the windows version of the plugin. It's nice having a little configure script for the linux side of things, but what about windows? We need to do a little extra work.
Some of this extra work is because I've chosen non-standard locations for the support libraries of my application. Qca and OpenSsl both exist within the project's directory structure in a libraries/ directory. My guess is that you've done something similar if you are trying to cross compile your application, but even if you didn't the following should help.
Finding OpenSsl
Qca-ossl wont build very well if it can't find the library it's supposed to connect to... :) So let's specify directly where it is. Comment out the lines relating to winlocal.prf and the changes that stem from it in qca-ossl.pro. We will directly specify where to find openSsl.
TEMPLATE = lib
CONFIG += plugin
QT -= gui
DESTDIR = lib
VERSION = 2.0.0
unix:include(conf.pri)
windows:CONFIG += crypto
windows:include(conf_win.pri)
CONFIG += create_prl
SOURCES = qca-ossl.cpp
windows:{
# Rather than rely on the winlocal.prf file, we will specify the location of the openssl
# by hand when running qmake.
#
# load(winlocal.prf)
# isEmpty(WINLOCAL_PREFIX) {
# error("WINLOCAL_PREFIX not found. See http://delta.affinix.com/platform/#winlocal")
# }
#
# OPENSSL_PREFIX = $$WINLOCAL_PREFIX
DEFINES += OSSL_097
INCLUDEPATH += $$OPENSSL_PREFIX/include
LIBS += -L$$OPENSSL_PREFIX/lib
LIBS += -llibeay32 -lssleay32
LIBS += -lgdi32 -lwsock32
}
!debug_and_release|build_pass {
CONFIG(debug, debug|release) {
mac:TARGET = $$member(TARGET, 0)_debug
windows:TARGET = $$member(TARGET, 0)d
}
}
Now we have direct access to the $$OPENSSL_PREFIX environment variable in the .pro file. We can set it when we call qmake by doing the following.
qmake.exe "OPENSSL_PREFIX=C:/path/to/openssl-1.0.0b"
You should be able to use backward slashes or forward slashes. Here I choose forward since Qt has deprecated them since 4.7.
Alternatively, you could set the OPENSSL_PREFIX variable directly in the .pro file.
Finding Qca
After comparing the unix and windows makefiles for qca-ossl, oddly enough, it never includes the qca libraries for building or linking! ?!?! This led to an "Undefined interface" error on the Q_INTERFACES(QCAPlugin) line of the opensslPlugin class definition at the end of qca-ossl.cpp.
To avoid this, we will need to explicitly define the include and library paths by hand. Expanding on the qmake line from the last section the final qmake line is as follows.
qmake.exe "OPENSSL_PREFIX=C:/path/to/openssl-1.0.0b" "INCLUDEPATH+=C:/path/to/qca-2.0.3/include/QtCrypto" "LIBS+=-LC:/path/to/qca-2.0.3/lib -lqca2"
"Installing" Qca-ossl
After running the qmake line above and running a plain ol' make, you'll need to install Qca-ossl. You can copy the resulting dll from the lib/ directory to your Qt's plugins directory, which if you're using my versions defaults to C:\Qt\2010.05\qt\plugins\crypto. Alternatively, you can move it to a crypto directory that's at the root level of your project's directory structure such as C:\path\to\my\project\crypto.
I hope this helps!
Actually, you can try this tutorial QCA+OpenSSL on Window. It's work well.
By the way, I can make use of QCA with AES 256 on Window. But i can't use it on Symbian. Any idea to do it?
Related Post
How can I add zlib to an existing installation of Qt. I m pretty new in this so please give me detailed description!
Thanks for your help in advance!
zlib is contained in the core Qt libraries. If you want to use the zlib functions in a Qt program, you only have to include zlib.h which is in src/3rdparty/zlib. See e.g. the implementation of QByteArray in src/corelib/tools.
If you want to use quazip, just add the library to your project. It is based on the Qt libraries. Take care to build the correct qyazip library that corresponds to your Qt installation.
You get the correct include path by adding the following line to your project file:
INCLUDEPATH += $$[QT_INSTALL_PREFIX]/src/3rdparty/zlib
For Qt5, see Thorbjørn's comment: it is sufficient to use #include <QtZlib/zlib.h>.
The current answer is only valid for Qt4. Since Qt5 the zlib header file is stored in a different directory. Using the qmake property QT_INSTALL_HEADERS you can add to your .pro file:
INCLUDEPATH += $$[QT_INSTALL_HEADERS]/QtZlib
This works e.g. to build quazip, if you add it to quazip.pro
The property $$[QT_INSTALL_HEADERS] points to QTDIR/qtbase/include/ within which lies QtZlib/zlib.h.
Without changing the includepath you have to change every include-statement to #include <QtZlib/zlib.h> as commented by Thorbjørn.
If you want to use zlib for compression/uncompression, use qCompress/qUncompress.
At least some people here want to build Quazip, which requires zlib.
Here's how I did it on windows with quazip 0.4.3.
First in the quazip.pro I changed SUBDIRS to contain only:
SUBDIRS=quazip
Then I downloaded zlib binaries and source from:
http://www.winimage.com/zLibDll/zlib125dll.zip [binaries]
http://www.winimage.com/zLibDll/zlib125.zip [source]
both links came from http://zlib.net
Then in the subfolder quazip/quazip.pro I added:
INCLUDEPATH += <path to zlib source>
in the win32 {} section I commented this line:
# *-msvc*: QMAKE_LFLAGS += /IMPLIB:$$DESTDIR\\quazip.lib
and I modified the LIBS line to this:
*-msvc*: LIBS += -lzlibwapi -L<path to zlib binaries>/dll32
I also modified in zip.c and unzip.c the
#include "zlib.h"
to become:
#include <zlib.h>
After that I build this to Release mode and got a DLL out.
Then in the project to use this, I added the following config:
INCLUDEPATH += <quazip source path>
INCLUDEPATH += <zlib source path>
LIBS += -L<quazip source path>\quazip\release -lquazip
And that builds and works, but only in Release mode for the test app. In Debug mode i get assertion errors and it fails.