I'm trying to add net-snmp lib to my project using win7 + cygwin:
Project file seems to contain valid lib and path entries:
win32:CONFIG(release, debug|release): LIBS += -L$$PWD/C:/usr/lib/
-lnetsnmp else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/C:/usr/lib/ -lnetsnmpd
INCLUDEPATH += $$PWD/C:/usr/include DEPENDPATH += $$PWD/C:/usr/include
But I can't build the project, because include file is not found, also it exists under given directory physically (c:/usr/include/net-snmp/net-snmp-config.h)
../snmptest1221313123/main.cpp:1:38: fatal error: net-snmp/net-snmp-config.h: No such file or directory
#include
I've read all "add external lib" topics, but it doesn't help to solve this.
Re-running qmake, re-opening Qt creator, or running qmake -r from terminal doesn't help neither.
Remove $$PWD/ (both from include and libs) and try again: run qmake and rebuild.
Related
I've built opencv and added these lines to .pro file:
INCLUDEPATH += C:/opencv-3.4.1/build/install/include
LIBS += C:\opencv-3.4.1\build\LIB\Debug\opencv_core341d.lib
LIBS += C:\opencv-3.4.1\build\LIB\Debug\opencv_highgui341d.lib
LIBS += C:\opencv-3.4.1\build\LIB\Debug\opencv_imgcodecs341d.lib
LIBS += C:\opencv-3.4.1\build\LIB\Debug\opencv_imgproc341d.lib
LIBS += C:\opencv-3.4.1\build\LIB\Debug\opencv_features2d341d.lib
now if I start the project, it links successfully but fails to start:
Starting C:\Users\steve\Documents\build-qttest4-Desktop_Qt_5_11_0_MSVC2015_64bit-Debug\debug\qttest4.exe...
The program has unexpectedly finished.
The process was ended forcefully.
Can I somehow tell QTCreator to add DLL files to put opencv DLL files to build-qttest4-Desktop_Qt_5_11_0_MSVC2015_64bit-Debug folder?
Here is a solution (which doesn't match top google search tutorial):
INCLUDEPATH += C:/opencv-3.4.1/build/install/include
LIBS += C:\opencv-3.4.1\build\LIB\Debug\opencv_core341d.lib
LIBS += C:\opencv-3.4.1\build\LIB\Debug\opencv_highgui341d.lib
LIBS += C:\opencv-3.4.1\build\LIB\Debug\opencv_imgcodecs341d.lib
LIBS += C:\opencv-3.4.1\build\LIB\Debug\opencv_imgproc341d.lib
LIBS += C:\opencv-3.4.1\build\LIB\Debug\opencv_features2d341d.lib
LIBS += -L"C:/opencv-3.4.1/build/bin/Debug"
and don't forget to run Build->Run qmake.
There are 2 ways to use DLL in some Windows Application
Use WinAPI LoadLibrary function and GetProcAddress function.
Set inside a Qt PRO file a location of LIB file that will tell to application that binary code is in YourLibraryName.DLL. But when you run debugger, application doesn't know where is DLL. One of possible solutions is to put full path to opencv DLL folder to PATH environment variable in windows Control Panel
I am trying to run my program in other computer without libraries. In *.pro file i added:
LIBS += -L"$$OUT_PWD/libs" -ltinyxml2
LIBS += -L"$$OUT_PWD/libs" -lopencv_highgui -lopencv_core -lopencv_imgcodecs -lopencv_imgproc
LIBS += -L"$$OUT_PWD/libs" -lboost_system
Then i copied libraries to other computer to ~/myprogram/libs and binary file to ~/myprogram, but it can not load libraries
./gpAnalizer: error while loading shared libraries: libtinyxml2.so.2:
cannot open shared object file: No such file or directory
You should use QMAKE_RPATHDIR variable.
Add the follow line to your .pro file:
QMAKE_RPATHDIR += $$OUT_PWD/libs
Of course this may work if $$OUT_PWD is ~/myprogram/. If not then replace it with actual path.
I am creating an OpenGL project in QT Creator, and would like to import GLFW and potentially other libraries later on.
I compiled and imported GLFW and was able to import it via
#include <GLFW/glfw3.h>
Qt Creator was even able to autofill the glfw methods. However, when I attempted to call one of them (e.g. glfwInit();, the compiler threw me the following error:
Undefined symbols for architecture x86_64:
"_CFArrayAppendValue", referenced from:
_addJoystickElement in libglfw3.a(iokit_joystick.m.o)
"_CFArrayApplyFunction", referenced from:
__glfwInitJoysticks in libglfw3.a(iokit_joystick.m.o)
_addJoystickElement in libglfw3.a(iokit_joystick.m.o)
"_CFArrayCreateMutable", referenced from:
... etc
I'm assuming it was unable to find the implementation of these methods.
I imported GLFW through the following procedure:
1. I used CMake to build a Unix Script. 2. I ran "make" in terminal on the generated makefile. This created a file called "libglfw3.a" 3. I imported the library into the project through QT, setting the Library as libglfw3.a and include path as "mypath/include/" (this folder contains another folder called GLFW, which contains glfw3.h).
QT Creator then entered the following into the QT project file.
win32:CONFIG(release, debug|release): LIBS += -L$$PWD/glfw-3.1.1/src/release/ -lglfw3
else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/glfw-3.1.1/src/debug/ -lglfw3
else:unix: LIBS += -L$$PWD/glfw-3.1.1/src/ -lglfw3
INCLUDEPATH += $$PWD/glfw-3.1.1/include
DEPENDPATH += $$PWD/glfw-3.1.1/include
win32-g++:CONFIG(release, debug|release): PRE_TARGETDEPS += $$PWD/glfw-3.1.1/src/release/libglfw3.a
else:win32-g++:CONFIG(debug, debug|release): PRE_TARGETDEPS += $$PWD/glfw-3.1.1/src/debug/libglfw3.a
else:win32:!win32-g++:CONFIG(release, debug|release): PRE_TARGETDEPS += $$PWD/glfw-3.1.1/src/release/glfw3.lib
else:win32:!win32-g++:CONFIG(debug, debug|release): PRE_TARGETDEPS += $$PWD/glfw-3.1.1/src/debug/glfw3.lib
else:unix: PRE_TARGETDEPS += $$PWD/glfw-3.1.1/src/libglfw3.a
Help would be greatly appreciated. I've spent at least 10 hours trying to figure out how to import a GL library into QT Creator, but all I can find are CMake tutorials for XCode, Visual Studio, etc.
I would ideally like to this by just modifying the QT .pro file, because I don't have experience with CMake, but if there are no alternatives, that's fine.
I'm developing with QT creator on Mac 10.10.15.
If anyone's curious, I figured it out.
I followed the procedure here: Compiling with GLFW3, linker errors 'undefined reference'
I didn't at first think this was relevant because it was specifically referring to building on XCode, but it turns out you have to do the exact same thing with QT Creator.
right click the project, Import Library -> System/Library/Frameworks -> and import Cocoa, CoreVideo, and IOKit.
My .pro file had the following lines added to them after I did all that
mac: LIBS += -framework Cocoa
else:unix|win32: LIBS += -lCocoa
mac: LIBS += -framework IOKit
else:unix|win32: LIBS += -lIOKit
mac: LIBS += -framework CoreVideo
else:unix|win32: LIBS += -lCoreVideo
I'm developing a Qt application in windows. I have created a lib file in visual studio. I have included the header file containing function prototypes in my Qt App and also added lib file in .pro file as follows
win32: LIBS += -L$$PWD/../Lib/ -lCpLib
INCLUDEPATH += $$PWD/../Lib
DEPENDPATH += $$PWD/../Lib
win32: PRE_TARGETDEPS += $$PWD/../Lib/CpLib.lib
I called the functions from my Qt app. It shows compile error as "undefined reference"
Please help me.
Regards....
The specification of your LIBS is passing linker arguments in gcc format (i.e. using -L to specify the directory and -l to specify the library name).
As you have created your lib file in Visual Studio, you'll need to specify the full library name
e.g.
win32: LIBS += yourlibrary.lib
alternatively, recompile the libraries using MinGW
Well i have a folder called libqtlua-1.4 in which i have the libqtlua.so, the qtlua executable, and in libqtlua-1.4/src/QtLua i have the headers.
How can i include it in a qtcreator project?
(I am running in ubuntu 11.10)
Any suggestion would be appreciated.
You have to specify the library in you project file (file with .pro extension) to qmake be able to see them when compile:
LIBS += -L/path/to/your/lib/libqtlua-1.4 -lqtlua
INCLUDEPATH += /path/to/your/lib/libqtlua-1.4/src/QtLua
References: LIBS, INCLUDEPATH.