variables not being set

[sombriks]

in the following example the FAFONT variable gets ignored:

FAFONT = node_modules/font-awesome/fonts

clean:
	rm -rf build.js 
	rm -rf mobilebuild/www
	mkdir mobilebuild/www

dist: clean
	mkdir -p mobilebuild/www/img
	mkdir -p mobilebuild/www/css
	mkdir -p mobilebuild/www/fonts
	mkdir -p mobilebuild/www/$FAFONT
	cp $FAFONT/fontawesome-webfont.* mobilebuild/www/$FAFONT
	cp -R img/* mobilebuild/www/img/
	cp -R css/* mobilebuild/www/css/
	cp -R fonts/* mobilebuild/www/fonts/
	cp index.html mobilebuild/www/"
	browserify src/main.js -o mobilebuild/www/build.js
	cd mobilebuild ; cordova build --release
	

looking in the code, i was unable to find where they are set.