tree 785dbe57e3c066761cea42b97cedb4504e08ce7b
parent 61d9cdf2a9ccb9e4770d7723db8b18b8952778ce
author Paolo 'Blaisorblade' Giarrusso <[EMAIL PROTECTED]> Thu, 28 Jul 2005
17:56:17 +0200
committer Sam Ravnborg <[EMAIL PROTECTED](none)> Thu, 28 Jul 2005 22:58:21 +0200
[PATCH] kbuild: describe Kbuild pitfall
Whitespace is significant for make, and I just fought against this... so
please apply this patch.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <[EMAIL PROTECTED]>
Signed-off-by: Sam Ravnborg <[EMAIL PROTECTED]>
Documentation/kbuild/makefiles.txt | 6 ++++++
1 files changed, 6 insertions(+)
diff --git a/Documentation/kbuild/makefiles.txt
b/Documentation/kbuild/makefiles.txt
--- a/Documentation/kbuild/makefiles.txt
+++ b/Documentation/kbuild/makefiles.txt
@@ -872,7 +872,13 @@ When kbuild executes the following steps
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.
-
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