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RenderKit / ospray

An Open, Scalable, Portable, Ray Tracing Based Rendering Engine for High-Fidelity Visualization
http://ospray.org
Apache License 2.0
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How to compile the ospTutorial files #408

Closed FFFwarp closed 4 years ago

FFFwarp commented 4 years ago

i'm new to rendering areas, i want to build this example. but when i run this command, there's an error. could you tell me how can i compile this file?

gcc -std=c99 ospTutorial/ospTutorial.c -I include -L . -lospray -Wl,-rpath,. -o ospTutorial

/usr/bin/ld: cannot open output file ospTutorial: Is a directory collect2: error: ld returned 1 exit status

Thanks a lot!!!!!!

johguenther commented 4 years ago

It looks like you are in the apps directory: when the linker tries to create the file ospTutorial it cannot, because ospTutorial already exists (and it is a directory). The command line you use is from v1.8, better use the current v2.0 with the current command line

gcc -std=c99 ../apps/ospTutorial/ospTutorial.c -I ../ospray/include -L . -lospray -Wl,-rpath,. -o ospTutorial

(given paths assume you are in a build directory under the OSPRay root folder, and that OSPRay has already been compiled (which should also automatically compile the tutorial))

johguenther commented 4 years ago

Please reopen if the problem still persists.