building 'image_intensities._native_code._image_intensities' extension
  creating build/temp.linux-x86_64-3.9/_native_code
  creating build/temp.linux-x86_64-3.9/_native_code/turbojpeg
  creating build/temp.linux-x86_64-3.9/build
  creating build/temp.linux-x86_64-3.9/build/temp.linux-x86_64-3.9
  gcc -pthread -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -fPIC -I./_native_code/turbojpeg -I./_native_code -I/usr/local/include/python3.9 -c ./_native_code/intensities.c -o build/temp.linux-x86_64-3.9/./_native_code/intensities.o -std=c99 -fPIC -O3 -DPPM_SUPPORTED -DBMP_SUPPORTED
  gcc: error: ./_native_code/intensities.c: No such file or directory
  gcc: fatal error: no input files
  compilation terminated.
  error: command '/usr/bin/gcc' failed with exit code 1