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
9 # So "sudo make install" won't change the "compiled by <user>"
10 # do "compiled by root"
12 if [ -r $TARGET -a ! -O include/linux/autoconf.h ]; then
13 echo " SKIPPED $TARGET"
20 if [ -r .version ]; then
21 VERSION=`cat .version`
28 UTS_VERSION="#$VERSION"
29 if [ -n "$SMP" ] ; then UTS_VERSION="$UTS_VERSION SMP"; fi
30 UTS_VERSION="$UTS_VERSION `LC_ALL=C LANG=C date`"
32 # Truncate to maximum length
35 UTS_TRUNCATE="sed -e s/\(.\{1,$UTS_LEN\}\).*/\1/"
36 LINUX_COMPILE_VERSION_ID="__linux_compile_version_id__`hostname | tr -c '[0-9A-Za-z\n]' '__'`_`LANG=C date | tr -c '[0-9A-Za-z\n]' '_'`"
37 # Generate a temporary compile.h
39 ( echo /\* This file is auto generated, version $VERSION \*/
41 echo \#define UTS_MACHINE \"$ARCH\"
43 echo \#define UTS_VERSION \"`echo $UTS_VERSION | $UTS_TRUNCATE`\"
45 echo \#define LINUX_COMPILE_TIME \"`LC_ALL=C LANG=C date +%T`\"
46 echo \#define LINUX_COMPILE_BY \"support\"
47 echo \#define LINUX_COMPILE_HOST \"planet-lab.org\"
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 | $UTS_TRUNCATE`\"
54 echo \#define LINUX_COMPILE_DOMAIN
57 echo \#define LINUX_COMPILER \"`$CC -v 2>&1 | tail -n 1`\"
58 echo \#define LINUX_COMPILE_VERSION_ID $LINUX_COMPILE_VERSION_ID
59 echo \#define LINUX_COMPILE_VERSION_ID_TYPE typedef char* "$LINUX_COMPILE_VERSION_ID""_t"
62 # Only replace the real compile.h if the new one is different,
63 # in order to preserve the timestamp and avoid unnecessary
65 # We don't consider the file changed if only the date/time changed.
66 # A kernel config change will increase the generation number, thus
67 # causing compile.h to be updated (including date/time) due to the
68 # changed comment in the
71 if [ -r $TARGET ] && \
72 grep -v 'UTS_VERSION\|LINUX_COMPILE_TIME' $TARGET > .tmpver.1 && \
73 grep -v 'UTS_VERSION\|LINUX_COMPILE_TIME' .tmpcompile > .tmpver.2 && \
74 cmp -s .tmpver.1 .tmpver.2; then
78 mv -f .tmpcompile $TARGET
80 rm -f .tmpver.1 .tmpver.2