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