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Commit 49490571 authored by Paolo 'Blaisorblade' Giarrusso's avatar Paolo 'Blaisorblade' Giarrusso Committed by Sam Ravnborg
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[PATCH] kbuild: describe Kbuild pitfall 



Whitespace is significant for make, and I just fought against this... so
please apply this patch.

Signed-off-by: default avatarPaolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
parent 61d9cdf2

Documentation/kbuild/makefiles.txt

+6 −0
Original line number Diff line number Diff line
@@ -872,7 +872,13 @@ When kbuild executes the following steps are followed (roughly): 
	Assignments to $(targets) are without $(obj)/ prefix.

	if_changed may be used in conjunction with custom commands as

	defined in 6.7 "Custom kbuild commands".



	Note: It is a typical mistake to forget the FORCE prerequisite.

	Another common pitfall is that whitespace is sometimes

	significant; for instance, the below will fail (note the extra space

	after the comma):

		target: source(s) FORCE

	#WRONG!#	$(call if_changed, ld/objcopy/gzip)



    ld

	Link target. Often LDFLAGS_$@ is used to set specific options to ld.