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authorMichal Marek <mmarek@suse.cz>2011-04-05 14:32:30 +0200
committerMichal Marek <mmarek@suse.cz>2011-04-18 14:26:55 +0200
commit53e6892c0411006848882eacfcfea9e93681b55d (patch)
treeaf622e1ec2b1a66961749596ba3b3cf45370f114
parent061296dc2c14f852604fc6849669fe0b78bb1eda (diff)
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>
-rw-r--r--Documentation/kbuild/kbuild.txt12
-rwxr-xr-xscripts/mkcompile_h14
2 files changed, 24 insertions, 2 deletions
diff --git a/Documentation/kbuild/kbuild.txt b/Documentation/kbuild/kbuild.txt
index f1431d099fce..f11ebb33e4a6 100644
--- a/Documentation/kbuild/kbuild.txt
+++ b/Documentation/kbuild/kbuild.txt
@@ -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.
diff --git a/scripts/mkcompile_h b/scripts/mkcompile_h
index 82416a81df5e..7ad6bf7a09ff 100755
--- a/scripts/mkcompile_h
+++ b/scripts/mkcompile_h
@@ -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

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