两种获得所需结果的方法，我可以看到.两者都需要权衡.

Two ways to get the result you want that I can see. Trade-offs with both.

$ cat Makefile
all: echoFOO echovFOO

echoFOO:
        echo '$(FOO)'

echovFOO:
        echo '$(value vFOO)'
$ FOO='a$$bc' vFOO='a$bc' make
echo 'a$bc'
a$bc
echo 'a$bc'
a$bc