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