What does the KBuild expression: 

FOO := $(BAR:"%"=%)

do as part of a Linux kernel Makefile?

0

1 Answer

It's a substitution reference. In this specific case, its intent appears to be to remove quotes from the variable. Ex. given

BAR := "quotedstring" FOO := $(BAR:"%"=%) all: $(info $$BAR is $(BAR)) $(info $$FOO is $(FOO))

then

$ make $BAR is "quotedstring" $FOO is quotedstring make: 'all' is up to date.

See also How to Convert a Quoted String to a Normal One in Makefile?