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