]>
git.proxmox.com Git - mirror_ubuntu-kernels.git/blob - scripts/mkcompile_h
2 # SPDX-License-Identifier: GPL-2.0
15 # Fix the language to get consistent output
19 if [ -z "$KBUILD_BUILD_VERSION" ]; then
20 VERSION
=$
(cat .version
2>/dev
/null ||
echo 1)
22 VERSION
=$KBUILD_BUILD_VERSION
25 if [ -z "$KBUILD_BUILD_TIMESTAMP" ]; then
28 TIMESTAMP
=$KBUILD_BUILD_TIMESTAMP
30 if test -z "$KBUILD_BUILD_USER"; then
31 LINUX_COMPILE_BY
=$
(whoami |
sed 's/\\/\\\\/')
33 LINUX_COMPILE_BY
=$KBUILD_BUILD_USER
35 if test -z "$KBUILD_BUILD_HOST"; then
36 LINUX_COMPILE_HOST
=`uname -n`
38 LINUX_COMPILE_HOST
=$KBUILD_BUILD_HOST
41 UTS_VERSION
="#$VERSION"
43 if [ -n "$SMP" ] ; then CONFIG_FLAGS
="SMP"; fi
44 if [ -n "$PREEMPT" ] ; then CONFIG_FLAGS
="$CONFIG_FLAGS PREEMPT"; fi
45 if [ -n "$PREEMPT_RT" ] ; then CONFIG_FLAGS
="$CONFIG_FLAGS PREEMPT_RT"; fi
47 # Truncate to maximum length
49 UTS_VERSION
="$(echo $UTS_VERSION $CONFIG_FLAGS $TIMESTAMP | cut -b -$UTS_LEN)"
51 # Generate a temporary compile.h
53 { echo /\
* This
file is auto generated
, version
$VERSION \
*/
54 if [ -n "$CONFIG_FLAGS" ] ; then echo "/* $CONFIG_FLAGS */"; fi
56 echo \
#define UTS_MACHINE \"$ARCH\"
58 echo \
#define UTS_VERSION \"$UTS_VERSION\"
60 printf '#define LINUX_COMPILE_BY "%s"\n' "$LINUX_COMPILE_BY"
61 echo \
#define LINUX_COMPILE_HOST \"$LINUX_COMPILE_HOST\"
63 LD_VERSION
=$
($LD -v |
head -n1 |
sed 's/(compatible with [^)]*)//' \
64 |
sed 's/[[:space:]]*$//')
65 printf '#define LINUX_COMPILER "%s"\n' "$CC_VERSION, $LD_VERSION"
68 # Only replace the real compile.h if the new one is different,
69 # in order to preserve the timestamp and avoid unnecessary
71 # We don't consider the file changed if only the date/time changed,
72 # unless KBUILD_BUILD_TIMESTAMP was explicitly set (e.g. for
73 # reproducible builds with that value referring to a commit timestamp).
74 # A kernel config change will increase the generation number, thus
75 # causing compile.h to be updated (including date/time) due to the
76 # changed comment in the
79 if [ -z "$KBUILD_BUILD_TIMESTAMP" ]; then
80 IGNORE_PATTERN
="UTS_VERSION"
82 IGNORE_PATTERN
="NOT_A_PATTERN_TO_BE_MATCHED"
85 if [ -r $TARGET ] && \
86 grep -v $IGNORE_PATTERN $TARGET > .tmpver
.1 && \
87 grep -v $IGNORE_PATTERN .tmpcompile
> .tmpver
.2 && \
88 cmp -s .tmpver
.1 .tmpver
.2; then
92 mv -f .tmpcompile
$TARGET
94 rm -f .tmpver
.1 .tmpver
.2