mirror of
https://github.com/torvalds/linux.git
synced 2025-10-31 16:48:26 +02:00
db46293bc6
When building the LINUX_COMPILER definition, instead of merely taking the last line from "$(CC) -v", grep for ' version ' in the output. This supports both gcc and clang. Signed-off-by: Jan-Simon Möller <dl9pf@gmx.de> Signed-off-by: Behan Webster <behanw@converseincode.com> Signed-off-by: Mark Charlebois <charlebm@gmail.com> Cc: PaX Team <pageexec@freemail.hu>
100 lines
2.5 KiB
Bash
Executable file
100 lines
2.5 KiB
Bash
Executable file
#!/bin/sh
|
|
|
|
TARGET=$1
|
|
ARCH=$2
|
|
SMP=$3
|
|
PREEMPT=$4
|
|
CC=$5
|
|
|
|
vecho() { [ "${quiet}" = "silent_" ] || echo "$@" ; }
|
|
|
|
# If compile.h exists already and we don't own autoconf.h
|
|
# (i.e. we're not the same user who did make *config), don't
|
|
# modify compile.h
|
|
# So "sudo make install" won't change the "compiled by <user>"
|
|
# do "compiled by root"
|
|
|
|
if [ -r $TARGET -a ! -O include/generated/autoconf.h ]; then
|
|
vecho " SKIPPED $TARGET"
|
|
exit 0
|
|
fi
|
|
|
|
# Do not expand names
|
|
set -f
|
|
|
|
# Fix the language to get consistent output
|
|
LC_ALL=C
|
|
export LC_ALL
|
|
|
|
if [ -z "$KBUILD_BUILD_VERSION" ]; then
|
|
if [ -r .version ]; then
|
|
VERSION=`cat .version`
|
|
else
|
|
VERSION=0
|
|
echo 0 > .version
|
|
fi
|
|
else
|
|
VERSION=$KBUILD_BUILD_VERSION
|
|
fi
|
|
|
|
if [ -z "$KBUILD_BUILD_TIMESTAMP" ]; then
|
|
TIMESTAMP=`date`
|
|
else
|
|
TIMESTAMP=$KBUILD_BUILD_TIMESTAMP
|
|
fi
|
|
if test -z "$KBUILD_BUILD_USER"; then
|
|
LINUX_COMPILE_BY=$(whoami | sed 's/\\/\\\\/')
|
|
else
|
|
LINUX_COMPILE_BY=$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="#$VERSION"
|
|
CONFIG_FLAGS=""
|
|
if [ -n "$SMP" ] ; then CONFIG_FLAGS="SMP"; fi
|
|
if [ -n "$PREEMPT" ] ; then CONFIG_FLAGS="$CONFIG_FLAGS PREEMPT"; fi
|
|
UTS_VERSION="$UTS_VERSION $CONFIG_FLAGS $TIMESTAMP"
|
|
|
|
# Truncate to maximum length
|
|
|
|
UTS_LEN=64
|
|
UTS_TRUNCATE="cut -b -$UTS_LEN"
|
|
|
|
# Generate a temporary compile.h
|
|
|
|
( echo /\* This file is auto generated, version $VERSION \*/
|
|
if [ -n "$CONFIG_FLAGS" ] ; then echo "/* $CONFIG_FLAGS */"; fi
|
|
|
|
echo \#define UTS_MACHINE \"$ARCH\"
|
|
|
|
echo \#define UTS_VERSION \"`echo $UTS_VERSION | $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 | grep ' version '`\"
|
|
) > .tmpcompile
|
|
|
|
# Only replace the real compile.h if the new one is different,
|
|
# in order to preserve the timestamp and avoid unnecessary
|
|
# recompilations.
|
|
# We don't consider the file changed if only the date/time changed.
|
|
# A kernel config change will increase the generation number, thus
|
|
# causing compile.h to be updated (including date/time) due to the
|
|
# changed comment in the
|
|
# first line.
|
|
|
|
if [ -r $TARGET ] && \
|
|
grep -v 'UTS_VERSION' $TARGET > .tmpver.1 && \
|
|
grep -v 'UTS_VERSION' .tmpcompile > .tmpver.2 && \
|
|
cmp -s .tmpver.1 .tmpver.2; then
|
|
rm -f .tmpcompile
|
|
else
|
|
vecho " UPD $TARGET"
|
|
mv -f .tmpcompile $TARGET
|
|
fi
|
|
rm -f .tmpver.1 .tmpver.2
|