I have simply downloaded the OptiX SDK (7.1), and have obviously installed CUDA (11). When opening a sample project in CLion, everything runs as it should, however, all the optix libraries are unknown to the IDE. Do you know anything about this?
I haven’t used CLion, but this must be an issue with the editor’s ability to find and parse the header files. I’d recommend checking the CLion forums, and/or their support channels. I did a quick Google search and found others having similar issues, I hope this might lead to something fruitful: https://intellij-support.jetbrains.com/hc/en-us/community/posts/360000060350-How-to-make-CLion-find-header-files-
Good luck!
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David.