Gaze project errors from Qt5 and openCV4 Computer Vision Projects book

[al072]

Hi to everyone! I just recenty compiled the static version of Qt 5.15.2 library and try to run the sample project "Gaze" from the "Qt5 and openCV4 Computer Vision Projects" book. Here is a github for this project: https://github.com/PacktPublishing/Qt-5-and-OpenCV-4-Computer-Vision-Projects/tree/master/Chapter-03

I didn't change any code in this example except the linking a static library in the .pro file.

Here is a .pro file:

TEMPLATE = app
TARGET = Gazer
INCLUDEPATH += .

QT += core gui multimedia network concurrent
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

# Input
HEADERS += mainwindow.h capture_thread.h utilities.h
SOURCES += main.cpp mainwindow.cpp capture_thread.cpp utilities.cpp

# Using OpenCV or QCamera
# DEFINES += GAZER_USE_QT_CAMERA=1
# QT += multimediawidgets


win32: LIBS += -L$$PWD/../../../../../OpenCV/static/x64/vc16/staticlib/ \
-lopencv_core451 \
-lIlmImf \
-lippicvmt \
-lippiw \
-littnotify \
-llibopenjp2 \
-lopencv_imgcodecs451 \
-lopencv_imgproc451 \
-lopencv_videoio451 \
-lzlib \
-lopengl32 \

INCLUDEPATH += $$PWD/../../../../../OpenCV/static/include

When i build the project i have the following errrors (please take a look on screen shot):

Help me to find out the problem please, what additional information you need i will provide. Thank you !

[al072]

During CMake configure and generate i used the following flags:

OFF: BUILD_SHARED_LIBS, BUILD_WITH_STATIC_CRT, ENABLE_PRECOMPILED_HEADERS

ON: WITH_OPENGL, WITH_Vulkan, OPENCV_EXTRA_MODULES_PATH

Other: is by default

MSVC2019 Compiler is used (x64)

[SGaist]

Hi,

Just a wild guess but it looks like your are not linking the static backend.

[al072]

@SGaist said in Gaze project errors from Qt5 and openCV4 Computer Vision Projects book:

Hi,

Just a wild guess but it looks like your are not linking the static backend.

Thank you for reply!!! Could you please clarify what do you mean by are not linking the static backend?

[SGaist]

See here for static plugins linking information.