make/linux.mk

   1 # linux.mk
   2 #
   3 # Goals:
   4 #   Configure an environment that will allow Taulabs GCS and firmware to be built
   5 #   on a Linux system. The environment will support the current versions of Qt SDK
   6 #   and the ARM toolchain installed to either the Taulabs/tools directory, their
   7 #   respective default installation locations, or made available on the system path.
   8
   9 # First look for `python3`. If `which` doesn't return a null value, then it exists!
  10 ifneq ($(shell which python3), "")
  11     PYTHON:=python3
  12 else
  13     # Get Python version, separate major/minor/patch, then put into wordlist
  14     PYTHON_VERSION_=$(wordlist 2,4,$(subst ., ,$(shell python -V 2>&1)))
  15     # Get major version from aforementioned list
  16     PYTHON_MAJOR_VERSION_=$(word 1,$(PYTHON_VERSION_))
  17     # Just in case Make has some weird scope stuff
  18     PYTHON=0
  19     # If the major Python version is the one we want..
  20     ifeq ($(PYTHON_MAJOR_VERSION_),3)
  21             # Then we can just use the normal Python executable
  22         PYTHON:=python
  23     else
  24             # And if it doesn't exist, let's use the default Python, and warn the user.
  25             # PYTHON NOT FOUND.
  26         PYTHON:=python
  27         echo "Python not found."
  28     endif
  29 endif
  30
  31 export PYTHON