From 1c7bafe7206d928eaccbcbd08d868733e0fb7054 Mon Sep 17 00:00:00 2001 From: "Robert P. J. Day" Date: Wed, 13 Sep 2006 07:57:50 -0400 Subject: [PATCH] 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 --- Documentation/sparse.txt | 8 ++++---- Makefile | 12 +++++++++--- 2 files changed, 13 insertions(+), 7 deletions(-) diff --git a/Documentation/sparse.txt b/Documentation/sparse.txt index 5a311c38dd1..f9c99c9a54f 100644 --- a/Documentation/sparse.txt +++ b/Documentation/sparse.txt @@ -69,10 +69,10 @@ 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 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__: +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__: - make C=2 CF="-D__CHECK_ENDIAN__" + make C=2 CHECKFLAGS="-D__CHECK_ENDIAN__" These checks are disabled by default as they generate a host of warnings. diff --git a/Makefile b/Makefile index 0d4a4dc7222..cd50298fbda 100644 --- a/Makefile +++ b/Makefile @@ -41,9 +41,15 @@ ifndef KBUILD_VERBOSE KBUILD_VERBOSE = 0 endif -# Call checker as part of compilation of C files -# Use 'make C=1' to enable checking (sparse, by default) -# Override with 'make C=1 CHECK=checker_executable CHECKFLAGS=....' +# Call a source code checker (by default, "sparse") as part of the +# C compilation. +# +# Use 'make C=1' to enable checking of only re-compiled files. +# Use 'make C=2' to enable checking of *all* source files, regardless +# of whether they are re-compiled or not. +# +# See the file "Documentation/sparse.txt" for more details, including +# where to get the "sparse" utility. ifdef C ifeq ("$(origin C)", "command line") -- 2.20.1