How to build Blender with edited blender_icons? SVG

If I do changes on SVG file located in ~/blender-build/blender/release/datafiles folder, save it and run commands

cd ~/blender-build/blender
make icons 

it ends with 

FileNotFoundError: [Errno 2] No such file or directory: 'blender': 'blender'
make: *** [icons] Error 1

Wiki has a note which I don't understand: "... both inkscape and blender must be in the system PATH for this command to execute properly."
Official Blender build and Inkscape are located in /Applications folder, but only Blender arised as error.


What is that system PATH?
How can I recognise if PATHs are set right?
(how they should looks like?)
Blender uses uncompress bitmaps for the icons, which are generated from the svg with a python script which depends on inkscape and blender. See this for details.

The basic workflow should be something like:


Edit svg
Run the python script in

blender/release/datafiles/blender_icons_update.py


If you are on linux, you can also run make icons instead.
Compile