WSL Ubuntu - making libfreenect - CYTHON_EXECUTABLE-NOTFOUND

Question

I am trying to build libfreenect in WSL in Ubuntu. I'm currently facing a problem identified by this line:

/bin/sh: 1: CYTHON_EXECUTABLE-NOTFOUND: not found

at the end of this log:

endeavour@DZHPwindows:~/libfreenect/build$ make
[ 16%] Built target freenectstatic
[ 32%] Built target freenect
[ 35%] Built target freenect-wavrecord
[ 39%] Built target freenect_sync
[ 42%] Built target freenect-glpclview
[ 46%] Built target freenect-camtest
[ 50%] Built target freenect-glview
[ 53%] Built target freenect-regview
[ 57%] Built target freenect-regtest
[ 60%] Built target freenect-tiltdemo
[ 64%] Built target freenect-chunkview
[ 67%] Built target freenect-micview
[ 71%] Built target freenect-hiview
[ 76%] Built target fakenect-record
[ 83%] Built target fakenect
[ 87%] Built target freenect_sync_static
[ 91%] Built target freenect-cpp_pcview
[ 94%] Built target freenect-cppview
[ 96%] Generating freenect3.c
/bin/sh: 1: CYTHON_EXECUTABLE-NOTFOUND: not found
make[2]: *** [wrappers/python/CMakeFiles/cython3_freenect.dir/build.make:74: wrappers/python/freenect3.c] Error 127
make[1]: *** [CMakeFiles/Makefile2:712: wrappers/python/CMakeFiles/cython3_freenect.dir/all] Error 2
make: *** [Makefile:136: all] Error 2

I have Python 3.8.10 installed and I have cython (0.29.24)

Answer 1

I think you need cython3 instead of cython so run

sudo apt-get install cython3

and then to run cmake again with the argument

-DCYTHON_EXECUTABLE=/usr/bin/cython3

probably it ends up as something like this

cmake .. -L -DBUILD_PYTHON3=ON -DPython3_EXACTVERSION=3.8.10 -DCYTHON_EXECUTABLE=/usr/bin/cython3