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