diff -ura av-mamzikov-stereophotoview-e7c5a890cfe5/external_libs.pri package-new/external_libs.pri
--- av-mamzikov-stereophotoview-e7c5a890cfe5/external_libs.pri
+++ package-new/external_libs.pri
@@ -9,7 +9,7 @@
 # Подключаем opencv...
 unix:!android:!CONFIG(without_opencv) {
     CONFIG += link_pkgconfig
-    PKGCONFIG += opencv
+    PKGCONFIG += opencv4
     DEFINES += OPENCV
     CONFIG(opencv_debug): DEFINES += CV_DEBUG
 }