Check if OpenCV is compiled with GTK support from C++ code

Question

My problem is the same as in: OpenCV GTK+2.x error

I am facing this problem deploying my code in systems where OpenCV is available but has not been installed with GTK support. I have no control over OpenCV installation in these systems.

How can I discriminate where OpenCV is compiled without GTK support from C++ code, possibly without relying on catching exceptions? I would simply avoid calling imshow in these cases.

something like: `#if defined (HAVE_GTK)` should work. You can check build information also with [getBuildInformation](https://www.learnopencv.com/get-opencv-build-information-getbuildinformation/) — Miki, Aug 29 '19 at 09:39

score 2 · Accepted Answer · answered Aug 29 '19 at 09:04

you could check dependencies by executing ldd opencv-lib and parse the output using e.g. regex to check for some kind of gtk libs.

Or use this approach: linux/gcc: ldd functionality from inside a C/C++ program

setenv("LD_TRACE_LOADED_OBJECTS", "1", 1); FILE *ldd = popen("/lib/libz.so");

Check if OpenCV is compiled with GTK support from C++ code

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