1
 2IA = global
 3PA = global
 4PS = global
 5S = global
 6PS = global
 7SV = global
 8b%: IA += b%
 9b%: private PA += b%
10b%: private PS = b%
11bar: all
12bar: IA += bar
13bar: private PA += bar
14bar: private PS = bar
15a%: IA += a%
16a%: private PA += a%
17a%: private PS = a%
18all: IA += all
19all: private PA += all
20all: private PS = all
21
22bar all: ; @echo '$@: IA=$(IA)'; echo '$@: PA=$(PA)'; echo '$@: PS=$(PS)'