]>
git.ipfire.org Git - people/ms/linux.git/blob - scripts/mkcompile_h
2 # SPDX-License-Identifier: GPL-2.0
16 # Fix the language to get consistent output
20 if [ -z "$KBUILD_BUILD_VERSION" ]; then
21 VERSION
=$
(cat .version
2>/dev
/null ||
echo 1)
23 VERSION
=$KBUILD_BUILD_VERSION
26 if [ -z "$KBUILD_BUILD_TIMESTAMP" ]; then
29 TIMESTAMP
=$KBUILD_BUILD_TIMESTAMP
31 if test -z "$KBUILD_BUILD_USER"; then
32 LINUX_COMPILE_BY
=$
(whoami |
sed 's/\\/\\\\/')
34 LINUX_COMPILE_BY
=$KBUILD_BUILD_USER
36 if test -z "$KBUILD_BUILD_HOST"; then
37 LINUX_COMPILE_HOST
=`uname -n`
39 LINUX_COMPILE_HOST
=$KBUILD_BUILD_HOST
42 UTS_VERSION
="#$VERSION"
44 if [ -n "$SMP" ] ; then CONFIG_FLAGS
="SMP"; fi
46 if [ -n "$PREEMPT_RT" ] ; then
47 CONFIG_FLAGS
="$CONFIG_FLAGS PREEMPT_RT"
48 elif [ -n "$PREEMPT_DYNAMIC" ] ; then
49 CONFIG_FLAGS
="$CONFIG_FLAGS PREEMPT_DYNAMIC"
50 elif [ -n "$PREEMPT" ] ; then
51 CONFIG_FLAGS
="$CONFIG_FLAGS PREEMPT"
54 # Truncate to maximum length
56 UTS_VERSION
="$(echo $UTS_VERSION $CONFIG_FLAGS $TIMESTAMP | cut -b -$UTS_LEN)"
58 # Generate a temporary compile.h
60 { echo /\
* This
file is auto generated
, version
$VERSION \
*/
61 if [ -n "$CONFIG_FLAGS" ] ; then echo "/* $CONFIG_FLAGS */"; fi
63 echo \
#define UTS_MACHINE \"$ARCH\"
65 echo \
#define UTS_VERSION \"$UTS_VERSION\"
67 printf '#define LINUX_COMPILE_BY "%s"\n' "$LINUX_COMPILE_BY"
68 echo \
#define LINUX_COMPILE_HOST \"$LINUX_COMPILE_HOST\"
70 LD_VERSION
=$
($LD -v |
head -n1 |
sed 's/(compatible with [^)]*)//' \
71 |
sed 's/[[:space:]]*$//')
72 printf '#define LINUX_COMPILER "%s"\n' "$CC_VERSION, $LD_VERSION"
75 # Only replace the real compile.h if the new one is different,
76 # in order to preserve the timestamp and avoid unnecessary
78 # We don't consider the file changed if only the date/time changed,
79 # unless KBUILD_BUILD_TIMESTAMP was explicitly set (e.g. for
80 # reproducible builds with that value referring to a commit timestamp).
81 # A kernel config change will increase the generation number, thus
82 # causing compile.h to be updated (including date/time) due to the
83 # changed comment in the
86 if [ -z "$KBUILD_BUILD_TIMESTAMP" ]; then
87 IGNORE_PATTERN
="UTS_VERSION"
89 IGNORE_PATTERN
="NOT_A_PATTERN_TO_BE_MATCHED"
92 if [ -r $TARGET ] && \
93 grep -v $IGNORE_PATTERN $TARGET > .tmpver
.1 && \
94 grep -v $IGNORE_PATTERN .tmpcompile
> .tmpver
.2 && \
95 cmp -s .tmpver
.1 .tmpver
.2; then
99 mv -f .tmpcompile
$TARGET
101 rm -f .tmpver
.1 .tmpver
.2