Commit | Line | Data |
---|---|---|
17c5ca98 | 1 | #!/bin/sh |
b2441318 | 2 | # SPDX-License-Identifier: GPL-2.0 |
17c5ca98 | 3 | |
1da177e4 LT |
4 | TARGET=$1 |
5 | ARCH=$2 | |
6 | SMP=$3 | |
bd5bdd87 | 7 | PREEMPT=$4 |
4b950bb9 TG |
8 | PREEMPT_RT=$5 |
9 | CC=$6 | |
1da177e4 | 10 | |
d03fab43 MF |
11 | vecho() { [ "${quiet}" = "silent_" ] || echo "$@" ; } |
12 | ||
1da177e4 LT |
13 | # If compile.h exists already and we don't own autoconf.h |
14 | # (i.e. we're not the same user who did make *config), don't | |
15 | # modify compile.h | |
16 | # So "sudo make install" won't change the "compiled by <user>" | |
17 | # do "compiled by root" | |
18 | ||
264a2683 | 19 | if [ -r $TARGET -a ! -O include/generated/autoconf.h ]; then |
d03fab43 | 20 | vecho " SKIPPED $TARGET" |
1da177e4 LT |
21 | exit 0 |
22 | fi | |
23 | ||
24 | # Do not expand names | |
25 | set -f | |
26 | ||
87c94bfb SR |
27 | # Fix the language to get consistent output |
28 | LC_ALL=C | |
29 | export LC_ALL | |
30 | ||
31 | if [ -z "$KBUILD_BUILD_VERSION" ]; then | |
37131ec4 | 32 | VERSION=$(cat .version 2>/dev/null || echo 1) |
1da177e4 | 33 | else |
87c94bfb | 34 | VERSION=$KBUILD_BUILD_VERSION |
1da177e4 LT |
35 | fi |
36 | ||
87c94bfb SR |
37 | if [ -z "$KBUILD_BUILD_TIMESTAMP" ]; then |
38 | TIMESTAMP=`date` | |
39 | else | |
40 | TIMESTAMP=$KBUILD_BUILD_TIMESTAMP | |
41 | fi | |
53e6892c | 42 | if test -z "$KBUILD_BUILD_USER"; then |
f0772604 | 43 | LINUX_COMPILE_BY=$(whoami | sed 's/\\/\\\\/') |
53e6892c MM |
44 | else |
45 | LINUX_COMPILE_BY=$KBUILD_BUILD_USER | |
46 | fi | |
47 | if test -z "$KBUILD_BUILD_HOST"; then | |
48 | LINUX_COMPILE_HOST=`hostname` | |
49 | else | |
50 | LINUX_COMPILE_HOST=$KBUILD_BUILD_HOST | |
51 | fi | |
1da177e4 LT |
52 | |
53 | UTS_VERSION="#$VERSION" | |
bd5bdd87 SR |
54 | CONFIG_FLAGS="" |
55 | if [ -n "$SMP" ] ; then CONFIG_FLAGS="SMP"; fi | |
56 | if [ -n "$PREEMPT" ] ; then CONFIG_FLAGS="$CONFIG_FLAGS PREEMPT"; fi | |
4b950bb9 | 57 | if [ -n "$PREEMPT_RT" ] ; then CONFIG_FLAGS="$CONFIG_FLAGS PREEMPT_RT"; fi |
87c94bfb | 58 | UTS_VERSION="$UTS_VERSION $CONFIG_FLAGS $TIMESTAMP" |
1da177e4 LT |
59 | |
60 | # Truncate to maximum length | |
61 | ||
62 | UTS_LEN=64 | |
17c5ca98 | 63 | UTS_TRUNCATE="cut -b -$UTS_LEN" |
1da177e4 LT |
64 | |
65 | # Generate a temporary compile.h | |
66 | ||
b79c6aa6 | 67 | { echo /\* This file is auto generated, version $VERSION \*/ |
bd5bdd87 | 68 | if [ -n "$CONFIG_FLAGS" ] ; then echo "/* $CONFIG_FLAGS */"; fi |
38385f8f | 69 | |
1da177e4 LT |
70 | echo \#define UTS_MACHINE \"$ARCH\" |
71 | ||
72 | echo \#define UTS_VERSION \"`echo $UTS_VERSION | $UTS_TRUNCATE`\" | |
73 | ||
53e6892c MM |
74 | echo \#define LINUX_COMPILE_BY \"`echo $LINUX_COMPILE_BY | $UTS_TRUNCATE`\" |
75 | echo \#define LINUX_COMPILE_HOST \"`echo $LINUX_COMPILE_HOST | $UTS_TRUNCATE`\" | |
1da177e4 | 76 | |
adcc3f7c | 77 | echo \#define LINUX_COMPILER \"`$CC -v 2>&1 | grep ' version ' | sed 's/[[:space:]]*$//'`\" |
b79c6aa6 | 78 | } > .tmpcompile |
1da177e4 LT |
79 | |
80 | # Only replace the real compile.h if the new one is different, | |
81 | # in order to preserve the timestamp and avoid unnecessary | |
82 | # recompilations. | |
83 | # We don't consider the file changed if only the date/time changed. | |
84 | # A kernel config change will increase the generation number, thus | |
38385f8f | 85 | # causing compile.h to be updated (including date/time) due to the |
1da177e4 LT |
86 | # changed comment in the |
87 | # first line. | |
88 | ||
89 | if [ -r $TARGET ] && \ | |
061296dc MM |
90 | grep -v 'UTS_VERSION' $TARGET > .tmpver.1 && \ |
91 | grep -v 'UTS_VERSION' .tmpcompile > .tmpver.2 && \ | |
1da177e4 LT |
92 | cmp -s .tmpver.1 .tmpver.2; then |
93 | rm -f .tmpcompile | |
94 | else | |
d03fab43 | 95 | vecho " UPD $TARGET" |
1da177e4 LT |
96 | mv -f .tmpcompile $TARGET |
97 | fi | |
98 | rm -f .tmpver.1 .tmpver.2 |