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Commit 53e6892c authored by Michal Marek's avatar Michal Marek
Browse files

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: default avatarMichal Marek <mmarek@suse.cz>
parent 061296dc

Documentation/kbuild/kbuild.txt

+12 −0
Original line number Diff line number Diff line
@@ -201,3 +201,15 @@ KBUILD_ENABLE_EXTRA_GCC_CHECKS 
--------------------------------------------------

If enabled over the make command line with "W=1", it turns on additional

gcc -W... options for more extensive build-time checking.



KBUILD_BUILD_TIMESTAMP

--------------------------------------------------

Setting this to a date string overrides the timestamp used in the

UTS_VERSION definition (uname -v in the running kernel). The default value

is the output of the date command at one point during build.



KBUILD_BUILD_USER, KBUILD_BUILD_HOST

--------------------------------------------------

These two variables allow to override the user@host string displayed during

boot and in /proc/version. The default value is the output of the commands

whoami and host, respectively.

scripts/mkcompile_h

+12 −2
Original line number Diff line number Diff line
@@ -42,6 +42,16 @@ if [ -z "$KBUILD_BUILD_TIMESTAMP" ]; then 
else

	TIMESTAMP=$KBUILD_BUILD_TIMESTAMP

fi

if test -z "$KBUILD_BUILD_USER"; then

	LINUX_COMPILE_BY=`whoami`

else

	LINUX_COMPILE_BY=$KBUILD_BUILD_USER

fi

if test -z "$KBUILD_BUILD_HOST"; then

	LINUX_COMPILE_HOST=`hostname`

else

	LINUX_COMPILE_HOST=$KBUILD_BUILD_HOST

fi



UTS_VERSION="#$VERSION"

CONFIG_FLAGS=""
@@ -63,8 +73,8 @@ UTS_TRUNCATE="cut -b -$UTS_LEN" 


  echo \#define UTS_VERSION \"`echo $UTS_VERSION | $UTS_TRUNCATE`\"



  echo \#define LINUX_COMPILE_BY \"`whoami`\"

  echo \#define LINUX_COMPILE_HOST \"`hostname | $UTS_TRUNCATE`\"

  echo \#define LINUX_COMPILE_BY \"`echo $LINUX_COMPILE_BY | $UTS_TRUNCATE`\"

  echo \#define LINUX_COMPILE_HOST \"`echo $LINUX_COMPILE_HOST | $UTS_TRUNCATE`\"



  echo \#define LINUX_COMPILER \"`$CC -v 2>&1 | tail -n 1`\"

) > .tmpcompile