diff mbox

[v2] kbuild: Allow to override LINUX_COMPILE_BY and LINUX_COMPILE_HOST macros

Message ID 1302534289-17689-1-git-send-email-mmarek@suse.cz (mailing list archive)
State New, archived
Headers show

Commit Message

Michal Marek April 11, 2011, 3:04 p.m. UTC
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.

Signed-off-by: Michal Marek <mmarek@suse.cz>
---
 Documentation/kbuild/kbuild.txt |   12 ++++++++++++
 scripts/mkcompile_h             |   14 ++++++++++++--
 2 files changed, 24 insertions(+), 2 deletions(-)

Comments

Valdis Klētnieks April 12, 2011, 3:25 a.m. UTC | #1
On Mon, 11 Apr 2011 17:04:49 +0200, Michal Marek said:
> 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. 

> +
> +KBUILD_BUILD_TIMESTAMP

Changelog section doesn't match actual patch.  Other than that, I'm OK on this.
Michal Marek April 12, 2011, 9:01 a.m. UTC | #2
On 12.4.2011 05:25, Valdis.Kletnieks@vt.edu wrote:
> On Mon, 11 Apr 2011 17:04:49 +0200, Michal Marek said:
>> 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. 
> 
>> +
>> +KBUILD_BUILD_TIMESTAMP
> 
> Changelog section doesn't match actual patch.  Other than that, I'm OK on this.

I changed it to

  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.

Michal
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diff mbox

Patch

diff --git a/Documentation/kbuild/kbuild.txt b/Documentation/kbuild/kbuild.txt
index 4a99031..27d7928 100644
--- a/Documentation/kbuild/kbuild.txt
+++ b/Documentation/kbuild/kbuild.txt
@@ -196,3 +196,15 @@  to be included in the databases, separated by blank space. E.g.:
 To get all available archs you can also specify all. E.g.:
 
     $ make ALLSOURCE_ARCHS=all tags
+
+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 82416a8..7ad6bf7 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