Cannot install python swig module without python symlink installed

[bigon]

Hello,

On debian the python -> python3 symlink is not available by default, and the installation of the swig module is failing with the following error:

../../../../../py-compile: line 125: test: found: integer expression expected
../../../../../py-compile: line 137: python: command not found
make[6]: *** [Makefile:523: install-pyexecPYTHON] Error 127

It seems that the PYTHON environment variable is not passed to the py-compile script