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<p>QT와 OpenCV를 같이 사용하기 위해 pro 파일에 OpenCV 관련 컴파일 옵션들을 다음처럼 추가했습니다.&nbsp;</p>



<p>2021. 8. 24  최초작성</p>







<figure><img data-lazy-fallback="1" data-attachment-id="5576" data-permalink="https://webnautes.blog/5574/image-111-2/" data-orig-file="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/image-111.png?fit=1430%2C426&amp;ssl=1" data-orig-size="1430,426" data-comments-opened="1" data-image-meta="{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}" data-image-title="image-111" data-image-description="" data-image-caption="" data-medium-file="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/image-111.png?fit=300%2C89&amp;ssl=1" data-large-file="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/image-111.png?fit=1024%2C305&amp;ssl=1" decoding="async" src="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/image-111.png?w=700&amp;ssl=1" alt="" sizes="(max-width: 1024px) 100vw, 1024px" data-recalc-dims="1" data-old-src="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/image-111.png?w=700&amp;is-pending-load=1#038;ssl=1" data-lazy-srcset="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/image-111.png?resize=1024%2C305&amp;ssl=1 1024w, https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/image-111.png?resize=300%2C89&amp;ssl=1 300w, https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/image-111.png?resize=768%2C229&amp;ssl=1 768w, https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/image-111.png?resize=1200%2C357&amp;ssl=1 1200w, https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/image-111.png?w=1430&amp;ssl=1 1430w"></figure>







<p>동작할거라는 예상과는 달리 다음과 같은 에러가 나네요.&nbsp;</p>



<pre><code>webnautes@DESKTOP-8TRVTF8:/mnt/d/qt_opencv_webcam$ make 
g++ -c -pipe -O2 -Wall -W -D_REENTRANT -fPIC -DQT_DEPRECATED_WARNINGS -DQT_NO_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_CORE_LIB -I. -I. -I -isystem /usr/include/x86_64-linux-gnu/qt5 -isystem /usr/include/x86_64-linux-gnu/qt5/QtWidgets -isystem /usr/include/x86_64-linux-gnu/qt5/QtGui -isystem /usr/include/x86_64-linux-gnu/qt5/QtCore -I. -I/usr/lib/x86_64-linux-gnu/qt5/mkspecs/linux-g++ -o main.o main.cpp 
In file included from /usr/include/x86_64-linux-gnu/qt5/QtWidgets/QApplication:1, 
                 from main.cpp:3: 
/usr/include/x86_64-linux-gnu/qt5/QtWidgets/qapplication.h:43:10: fatal error: QtWidgets/qtwidgetsglobal.h: No such file or directory 
   43 | #include &lt;QtWidgets/qtwidgetsglobal.h&gt; 
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 
compilation terminated. 
make: *** [Makefile:360: main.o] Error 1</code></pre>



<figure><img data-lazy-fallback="1" data-attachment-id="5578" data-permalink="https://webnautes.blog/5574/image-112-2/" data-orig-file="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/image-112.png?fit=1526%2C840&amp;ssl=1" data-orig-size="1526,840" data-comments-opened="1" data-image-meta="{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}" data-image-title="image-112" data-image-description="" data-image-caption="" data-medium-file="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/image-112.png?fit=300%2C165&amp;ssl=1" data-large-file="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/image-112.png?fit=1024%2C564&amp;ssl=1" decoding="async" src="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/image-112.png?w=700&amp;ssl=1" alt="" sizes="(max-width: 1024px) 100vw, 1024px" data-recalc-dims="1" data-old-src="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/image-112.png?w=700&amp;is-pending-load=1#038;ssl=1" data-lazy-srcset="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/image-112.png?resize=1024%2C564&amp;ssl=1 1024w, https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/image-112.png?resize=300%2C165&amp;ssl=1 300w, https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/image-112.png?resize=768%2C423&amp;ssl=1 768w, https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/image-112.png?resize=1200%2C661&amp;ssl=1 1200w, https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/image-112.png?w=1526&amp;ssl=1 1526w"></figure>







<p>pkg-config를 사용하지 않고 다음처럼 직접 적어줘야 문제가 생기지 않았습니다.&nbsp;필요시 LIBS 항목에 추가로 사용하는 라이브러리 모듈 이름을 적어주면 됩니다.</p>



<pre><code>INCLUDEPATH +=  /usr/local/include/opencv4/  
LIBS += -L/usr/local/lib/ -lopencv_core -lopencv_imgproc -lopencv_imgcodecs -lopencv_videoio</code></pre>



<figure><img data-lazy-fallback="1" data-attachment-id="5580" data-permalink="https://webnautes.blog/5574/image-113-2/" data-orig-file="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/image-113.png?fit=1458%2C414&amp;ssl=1" data-orig-size="1458,414" data-comments-opened="1" data-image-meta="{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}" data-image-title="image-113" data-image-description="" data-image-caption="" data-medium-file="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/image-113.png?fit=300%2C85&amp;ssl=1" data-large-file="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/image-113.png?fit=1024%2C291&amp;ssl=1" decoding="async" src="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/image-113.png?w=700&amp;ssl=1" alt="" sizes="(max-width: 1024px) 100vw, 1024px" data-recalc-dims="1" data-old-src="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/image-113.png?w=700&amp;is-pending-load=1#038;ssl=1" data-lazy-srcset="https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/image-113.png?resize=1024%2C291&amp;ssl=1 1024w, https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/image-113.png?resize=300%2C85&amp;ssl=1 300w, https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/image-113.png?resize=768%2C218&amp;ssl=1 768w, https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/image-113.png?resize=1200%2C341&amp;ssl=1 1200w, https://i0.wp.com/webnautes.blog/wp-content/uploads/2023/08/image-113.png?w=1458&amp;ssl=1 1458w"></figure>





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QT와 OpenCV를 같이 사용하기 위해 pro 파일에 OpenCV 관련 컴파일 옵션들을 다음처럼 추가했습니다.  2021. 8. 24 최초작성 동작할거라는 예상과는 달리 다음과 같은 에러가 나네요.  pkg-config를 사용하지 않고 다음처럼 직접 적어줘야 문제가 생기지 않았습니다. 필요시 LIBS 항목에 추가로 사용하는 라이브러리 모듈 이름을 적어주면 됩니다.
The post QT와 OpenCV 같이 사용시 pro 파일 설정 방법 first appeared on 멈춤보단 천천히라도.

QT와 OpenCV 같이 사용시 pro 파일 설정 방법

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