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kbuild: Allow to override LINUX_COMPILE_BY and LINUX_COMPILE_HOST macros
Make it possible to override the user@host string displayed during boot and in /proc/version by the environment variables KBUILD_BUILD_USER and KBUILD_BUILD_HOST. Several distributions patch scripts/mkcompile_h to achieve this, so let's provide an official way. Also, document the KBUILD_BUILD_TIMESTAMP variable while at it. Signed-off-by: Michal Marek <mmarek@suse.cz>
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@ -201,3 +201,15 @@ KBUILD_ENABLE_EXTRA_GCC_CHECKS
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--------------------------------------------------
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If enabled over the make command line with "W=1", it turns on additional
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gcc -W... options for more extensive build-time checking.
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KBUILD_BUILD_TIMESTAMP
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--------------------------------------------------
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Setting this to a date string overrides the timestamp used in the
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UTS_VERSION definition (uname -v in the running kernel). The default value
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is the output of the date command at one point during build.
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KBUILD_BUILD_USER, KBUILD_BUILD_HOST
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--------------------------------------------------
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These two variables allow to override the user@host string displayed during
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boot and in /proc/version. The default value is the output of the commands
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whoami and host, respectively.
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@ -42,6 +42,16 @@ if [ -z "$KBUILD_BUILD_TIMESTAMP" ]; then
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else
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TIMESTAMP=$KBUILD_BUILD_TIMESTAMP
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fi
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if test -z "$KBUILD_BUILD_USER"; then
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LINUX_COMPILE_BY=`whoami`
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else
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LINUX_COMPILE_BY=$KBUILD_BUILD_USER
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fi
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if test -z "$KBUILD_BUILD_HOST"; then
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LINUX_COMPILE_HOST=`hostname`
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else
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LINUX_COMPILE_HOST=$KBUILD_BUILD_HOST
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fi
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UTS_VERSION="#$VERSION"
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CONFIG_FLAGS=""
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@ -63,8 +73,8 @@ UTS_TRUNCATE="cut -b -$UTS_LEN"
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echo \#define UTS_VERSION \"`echo $UTS_VERSION | $UTS_TRUNCATE`\"
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echo \#define LINUX_COMPILE_BY \"`whoami`\"
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echo \#define LINUX_COMPILE_HOST \"`hostname | $UTS_TRUNCATE`\"
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echo \#define LINUX_COMPILE_BY \"`echo $LINUX_COMPILE_BY | $UTS_TRUNCATE`\"
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echo \#define LINUX_COMPILE_HOST \"`echo $LINUX_COMPILE_HOST | $UTS_TRUNCATE`\"
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echo \#define LINUX_COMPILER \"`$CC -v 2>&1 | tail -n 1`\"
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) > .tmpcompile
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