Qt GLFW and GLEW setup

bence

And who to built it. I just find the way to use it in VS.

SGaist

Please, read the documentation of the libraries you want to use. It's explained right in their website.

bence

just another think link somebody says

LIBS += -LC:\Qt\5.13.0\mingw73_64\lib\libQt5OpenGL.a -lopengl64

It should work but it does not work for me

bence

@SGaist

Other thing is that at glfw\lib-mingw-w64 there is 3 files

glfw3.dll
libglfw3.a
libglfw3dll.a

these are libarys so I assume that I could include that so right click add external libary I add: libglfw3.a

.pro file

TEMPLATE = app
CONFIG += console c++11
CONFIG -= app_bundle
CONFIG -= qt

SOURCES += main.cpp


INCLUDEPATH += C:\glfw\include

win32:CONFIG(release, debug|release): LIBS += -L$$PWD/../../../../glfw/lib-mingw-w64/ -lglfw3
else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/../../../../glfw/lib-mingw-w64/ -lglfw3d
else:unix: LIBS += -L$$PWD/../../../../glfw/lib-mingw-w64/ -lglfw3

INCLUDEPATH += $$PWD/../../../../glfw/lib-mingw-w64
DEPENDPATH += $$PWD/../../../../glfw/lib-mingw-w64

So it looks good but when I try to build the program I get errors

:-1: error: cannot find -lglfw3d
:-1: error: collect2.exe: error: ld returned 1 exit status

JonB

@bence said in Qt GLFW and GLEW setup:

error: cannot find -lglfw3d

I don't know whether it would give rise to that error message, but I do not see either a .dll or a .a having that trailing d in its name. When using MSVC, debug libraries have a d on the end of their name, but I don't think that is the convention when using gcc/mingw. So are you using a linker line designed for MSVC with a build using MinGW?

bence

@JonB said in Qt GLFW and GLEW setup:

MSVC

At C:\glfw\lib-vc2019 there is 3 files glfw3.dll glfw3.lib glfw3dll.lib

At C:\glfw\lib-mingw-w64 there is 3 files glfw3.dll libglfw3.a libglfw3dll.a I am using this libary but I getting error I know that there is no d in name I add external libary I add libglfw3.a and I disable Mac and Linux platform and I also disable Add d suffix for debug version

lib-mingw-w64 there is nothing related to MSVS I guess

.pro

TEMPLATE = app
CONFIG += console c++11
CONFIG -= app_bundle
CONFIG -= qt

INCLUDEPATH += C:\glfw\include

win32: LIBS += -L$$PWD/../../../../glfw/lib-mingw-w64/ -lglfw3

INCLUDEPATH += $$PWD/../../../../glfw/lib-mingw-w64
DEPENDPATH += $$PWD/../../../../glfw/lib-mingw-w64

SOURCES += main.cpp

I get 32 errors

undefined reference to `__imp_CreateDCW'
undefined reference to `__imp_GetDeviceCaps'
undefined reference to `__imp_DeleteDC'

....

JonB

@bence
The 3 unreferenceds you list come from WinGDI. You would need to link against something link Gdi32.lib for these, which I suspect you are not doing. Or, I don't know, those leading __imp_s might indicate you are still somehow trying to link against MSVC libraries.

In fact I even see a stackoverflow post covering this for GLFW MinGW link error, which you should read through and follow. It says MinGW has a library libgdi32.a for these.

bence

@JonB But there is no Gdi32.lib file in the folder

And if I just use the following code

int main(void)
{
    if (!glfwInit())
        return -1;
    return 0;
}

It still not woriking

JonB

@bence

But there is no Gdi32.lib file in the folder

Please read my post and act on it.

bence

@JonB

The only thing that I did is I add two file. I assume that I just have to do that.

.pro file

TEMPLATE = app
CONFIG += console c++11
CONFIG -= app_bundle
CONFIG -= qt

INCLUDEPATH += C:\glfw\include

SOURCES += main.cpp

win32: LIBS += -L$$PWD/../../../../glfw/lib-mingw-w64/ -lglfw3

INCLUDEPATH += $$PWD/../../../../glfw/lib-mingw-w64
DEPENDPATH += $$PWD/../../../../glfw/lib-mingw-w64


win32: LIBS += -L$$PWD/../../../../MinGW/lib/ -lgdi32

INCLUDEPATH += $$PWD/../../../../MinGW/include
DEPENDPATH += $$PWD/../../../../MinGW/include

win32: LIBS += -L$$PWD/../../../../MinGW/lib/ -lopengl32

INCLUDEPATH += $$PWD/../../../../MinGW/include
DEPENDPATH += $$PWD/../../../../MinGW/include

SGaist

It looks like you are mixing two different MinGW installations.