Extra characters after test expression.

Vics

Hi,
I'm trying to set OpenCV (3.10) library with Qt (5.7) at Windows 7

While building the sample project and I got that error "Extra characters after test expression" on my PRO file

Here is the

QT       += core
QT       -= gui
TARGET = myFirstOpenCVProject
CONFIG   += console
CONFIG   -= app_bundle
TEMPLATE = app
SOURCES += main.cpp
INCLUDEPATH += E:\\opencv\\release\\include\\
LIBS += -LE:\\opencv\\release\\x86\\mingw\\lib \
    -llibopencv_imgcodecs310.dll.a
    -llibopencv_core310.dll.a \
    -llibopencv_highgui310.dll.a \
    -llibopencv_imgproc310.dll.a \
    -llibopencv_features2d310.dll.a \
    -llibopencv_calib3d310.dll.a

Here is C code

#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>

int main()
{
        cv::Mat image= cv::imread("img.jpg");
        cv::namedWindow("My Image");
        cv::imshow("My Image", image);
        cv::waitKey(5000);
        return 1;
}

Thanks at advance

VRonin

you are missing a back slash after -llibopencv_imgcodecs310.dll.a and -l libraries should not include the extension

Vics

Thank you for reply.

Now my PRO file is the following

QT       += core
QT       -= gui
TARGET = myFirstOpenCVProject
CONFIG   += console
CONFIG   -= app_bundle
TEMPLATE = app
SOURCES += main.cpp
INCLUDEPATH += E:\\opencv\\release\\include\\
LIBS += -LE:\\opencv\\release\\x86\\mingw\\lib \
    -llibopencv_imgcodecs310 \
    -llibopencv_core310 \
    -llibopencv_highgui310 \
    -llibopencv_imgproc310 \
    -llibopencv_features2d310 \
    -llibopencv_calib3d310

and got errors like that undefined reference to `cv::String::allocate(unsigned int)'

seems include directory have problem

ambershark

@Vics said in Extra characters after test expression.:

Thank you for reply.

Now my PRO file is the following

QT += core
QT -= gui
TARGET = myFirstOpenCVProject
CONFIG += console
CONFIG -= app_bundle
TEMPLATE = app
SOURCES += main.cpp
INCLUDEPATH += E:\opencv\release\include\
LIBS += -LE:\opencv\release\x86\mingw\lib
-llibopencv_imgcodecs310
-llibopencv_core310
-llibopencv_highgui310
-llibopencv_imgproc310
-llibopencv_features2d310
-llibopencv_calib3d310

and got errors like that undefined reference to `cv::String::allocate(unsigned int)'

seems include directory have problem

Drop the lib from the libraries.. i.e.

LIBS += -lopencv_core310 \
   opencv_highgui310
   etc