Error when building Astra SDK on Ubuntu 14.04

[blakemcconnell]

Hi, I’m trying to build the Astra SDK on Ubuntu 14.04. I cloned the astra repository, updated the submodules, installed SFML, but am still getting an error when I run cmake:

CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
Please set them or make sure they are set and tested correctly in the CMake files:
OpenNI2_LIBRARY
linked by target “openni_sensor” in directory /code/lib/astra/src/plugins/openni_sensor

I tried setting this environment variable to ~/vendor/openni2/ubuntu-x64 and that didn’t work. Is this something that I actually need to set by hand or is there some other configuration step that I missed? I wonder if this error is actually a red herring and there is something else I’m missing.

[josh]

It’s a CMAKE variable, not an environment variable and it should point to the library itself. To set it on the command line, add -DOpenNI2_LIBRARY=~/vendor/openni2/ubuntu-x64/libOpenNI2.so to your cmake command. Alternately if you want to use your own build of OpenNI you can set it to the location of your library.

[blakemcconnell]

That worked! Thanks Josh.

Now, I’m encountering another problem. When I try to build, I get these errors:

/code/lib/astra/src/astra_core/astra_context.cpp: In constructor ‘astra::context::context()’:
/code/lib/astra/src/astra_core/astra_context.cpp:27:19: error: ‘make_unique’ is not a member of ‘astra’
: impl_(astra::make_unique<context_impl>()),
^
/code/lib/astra/src/astra_core/astra_context.cpp:27:19: note: suggested alternative:
In file included from /code/lib/astra/src/astra_core/astra_cxx_compatibility.hpp:20:0,
from /code/lib/astra/src/astra_core/astra_context.cpp:20:
/code/lib/astra/src/astra_core/astra_cxx_make_unique.hpp:162:4: note: ‘std::make_unique’
make_unique(Args&&…) = delete;
^
/code/lib/astra/src/astra_core/astra_context.cpp:27:50: error: expected primary-expression before ‘>’ token
: impl_(astra::make_unique<context_impl>()),
^
/code/lib/astra/src/astra_core/astra_context.cpp:27:52: error: expected primary-expression before ‘)’ token
: impl_(astra::make_unique<context_impl>()),
^

looks like the c++ version is not being specified in the Makefile. could that be the culprit?

[blakemcconnell]

Ok, so I upgraded to Ubuntu 16.04 which got me past the c++14 (I think) related errors above. With that, was able to build successfully.

Thanks for the help!

PS: For the sake future Linux-builders, it might be good to make the c++14 dependency clear in the documentation (if that was indeed the problem)

[josh]

Sorry I didn’t see your edited message (email notified the original only). What compiler and version were you using? It doesn’t require C++14, only C++11, but when C++14 is available it uses a few C++14 features. It might be possible the detection code needs to handle a different case. See astra/CMakeLists.txt at master · orbbec/astra · GitHub

[blakemcconnell]

No worries, Josh, thanks for the reply. I saw that section in the CMakeLists, and could see that the std flag was set to c++11 when I was building, but for whatever reason still seeing the std library related errors I posted above.

I hate to keep extending this thread, especially after posting several “it works now, thanks” messages. Now I have an issue where I’m not seeing depth data in the SimpleDepthViewer-SFML example, and also seeing multiple failures when running the astra-tests executable. Do I need to link anything when I run the executables? I know that dll’s have to be linked on Windows, I wonder if something similar is required on Linux.

[blakemcconnell]

Ok the errors I mentioned above were USB-related. I fixed them by following the instructions here: https://3dclub.orbbec3d.com/t/orbbec-openi-problem-with-usb/279/5. Hopefully this helps someone else!

[boocax]

I got the same problem now. I am Ubuntu14.04 ,g++ 5.0, Kernel 4.10 ,and I dont want to upgrade Ubuntu16.04. Do you have other way to solve it ??

[boocax]

I fixed them by following the instructions here: fixes the C++11 make_unique port

Hopefully this helps someone else!