seamcarving | Implementation of Seam Carving in Javascript using Canvas | Canvas library

MyLibrary is not a variable, it's a CMake target. The syntax ${variable} is used to substitute the contents of a variable. The correct syntax to create a dependency to MyLibrary is this:

target_link_libraries( myProject PRIVATE MyLibrary )

The syntax is probably correct in the case of ${OpenCV_LIBS}. It's common practice that packages define a variable that contains the names of the libraries that need to be included to use the package. So in your case, ${OpenCV_LIBS} might evaluate to something like "OpenCV_lib1 OpenCV_lib2".

A few other improvements you could make:

• It's a bad idea to GLOB your source files. The glob will be evaluated at configure-time, and if you add files to your directory without re-running CMake configuration, they will not be taken in consideration. The canonical way AFAIK is to just list your sources explicitly.
• Consider using target_include_directories instead of include_directories, to limit the effect to just the appropriate target.