path: root/Documentation/sparse.txt
diff options
authorGeert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>2008-06-20 13:45:12 (GMT)
committerSam Ravnborg <sam@ravnborg.org>2008-07-25 20:12:39 (GMT)
commita887a07d51be6c7cd2c4c373cd17273158d6a85d (patch)
tree00320547e4d4bce3b29e4edb12559ecc12ac06a6 /Documentation/sparse.txt
parent74fc5c653c5d0f9d4d70499709a68e61c4acf991 (diff)
kbuild: sparse needs CF not CHECKFLAGS
Documentation/sparse.txt tells to use: make C=2 CHECKFLAGS="-D__CHECK_ENDIAN__" However, this still doesn't enable endian checks. The correct syntax is: make C=2 CF="-D__CHECK_ENDIAN__" This documentation bug was introduced by the following commit: commit 1c7bafe7206d928eaccbcbd08d868733e0fb7054 Author: Robert P. J. Day <rpjday@mindspring.com> Date: Wed Sep 13 07:57:50 2006 -0400 kbuild: clarify "make C=" build option Clarify the use of "make C=" in the top-level Makefile, and fix a typo in the Documentation file. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> This `typo' was not a typo, as `CF' had been introduced much earlier, by: commit 7b49bb9aff8b14d15da58111d8908c877c0a525e Author: viro@ZenIV.linux.org.uk <viro@ZenIV.linux.org.uk> Date: Fri Sep 9 21:14:35 2005 +0100 [PATCH] kbuild: CF=<arguments> passes arguments to sparse Allows to add to sparse arguments without mutilating makefiles - just pass CF=<arguments> and they will be added to CHECKFLAGS. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Diffstat (limited to 'Documentation/sparse.txt')
1 files changed, 4 insertions, 4 deletions
diff --git a/Documentation/sparse.txt b/Documentation/sparse.txt
index 1a3bdc2..42f43fa 100644
--- a/Documentation/sparse.txt
+++ b/Documentation/sparse.txt
@@ -73,10 +73,10 @@ recompiled, or use "make C=2" to run sparse on the files whether they need to
be recompiled or not. The latter is a fast way to check the whole tree if you
have already built it.
-The optional make variable CHECKFLAGS can be used to pass arguments to sparse.
-The build system passes -Wbitwise to sparse automatically. To perform
-endianness checks, you may define __CHECK_ENDIAN__:
+The optional make variable CF can be used to pass arguments to sparse. The
+build system passes -Wbitwise to sparse automatically. To perform endianness
+checks, you may define __CHECK_ENDIAN__:
+ make C=2 CF="-D__CHECK_ENDIAN__"
These checks are disabled by default as they generate a host of warnings.

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