11da177e4SLinus TorvaldsTARGET=$1 21da177e4SLinus TorvaldsARCH=$2 31da177e4SLinus TorvaldsSMP=$3 41da177e4SLinus TorvaldsCC=$4 51da177e4SLinus Torvalds 61da177e4SLinus Torvalds# If compile.h exists already and we don't own autoconf.h 71da177e4SLinus Torvalds# (i.e. we're not the same user who did make *config), don't 81da177e4SLinus Torvalds# modify compile.h 91da177e4SLinus Torvalds# So "sudo make install" won't change the "compiled by <user>" 101da177e4SLinus Torvalds# do "compiled by root" 111da177e4SLinus Torvalds 121da177e4SLinus Torvaldsif [ -r $TARGET -a ! -O include/linux/autoconf.h ]; then 131da177e4SLinus Torvalds echo " SKIPPED $TARGET" 141da177e4SLinus Torvalds exit 0 151da177e4SLinus Torvaldsfi 161da177e4SLinus Torvalds 171da177e4SLinus Torvalds# Do not expand names 181da177e4SLinus Torvaldsset -f 191da177e4SLinus Torvalds 201da177e4SLinus Torvaldsif [ -r .version ]; then 211da177e4SLinus Torvalds VERSION=`cat .version` 221da177e4SLinus Torvaldselse 231da177e4SLinus Torvalds VERSION=0 241da177e4SLinus Torvalds echo 0 > .version 251da177e4SLinus Torvaldsfi 261da177e4SLinus Torvalds 271da177e4SLinus Torvalds 281da177e4SLinus TorvaldsUTS_VERSION="#$VERSION" 291da177e4SLinus Torvaldsif [ -n "$SMP" ] ; then UTS_VERSION="$UTS_VERSION SMP"; fi 301da177e4SLinus TorvaldsUTS_VERSION="$UTS_VERSION `LC_ALL=C LANG=C date`" 311da177e4SLinus Torvalds 321da177e4SLinus Torvalds# Truncate to maximum length 331da177e4SLinus Torvalds 341da177e4SLinus TorvaldsUTS_LEN=64 351da177e4SLinus TorvaldsUTS_TRUNCATE="sed -e s/\(.\{1,$UTS_LEN\}\).*/\1/" 361da177e4SLinus Torvalds 371da177e4SLinus Torvalds# Generate a temporary compile.h 381da177e4SLinus Torvalds 391da177e4SLinus Torvalds( echo /\* This file is auto generated, version $VERSION \*/ 401da177e4SLinus Torvalds 411da177e4SLinus Torvalds echo \#define UTS_MACHINE \"$ARCH\" 421da177e4SLinus Torvalds 431da177e4SLinus Torvalds echo \#define UTS_VERSION \"`echo $UTS_VERSION | $UTS_TRUNCATE`\" 441da177e4SLinus Torvalds 451da177e4SLinus Torvalds echo \#define LINUX_COMPILE_TIME \"`LC_ALL=C LANG=C date +%T`\" 461da177e4SLinus Torvalds echo \#define LINUX_COMPILE_BY \"`whoami`\" 471da177e4SLinus Torvalds echo \#define LINUX_COMPILE_HOST \"`hostname | $UTS_TRUNCATE`\" 481da177e4SLinus Torvalds 491da177e4SLinus Torvalds if [ -x /bin/dnsdomainname ]; then 501da177e4SLinus Torvalds echo \#define LINUX_COMPILE_DOMAIN \"`dnsdomainname | $UTS_TRUNCATE`\" 511da177e4SLinus Torvalds elif [ -x /bin/domainname ]; then 521da177e4SLinus Torvalds echo \#define LINUX_COMPILE_DOMAIN \"`domainname | $UTS_TRUNCATE`\" 531da177e4SLinus Torvalds else 541da177e4SLinus Torvalds echo \#define LINUX_COMPILE_DOMAIN 551da177e4SLinus Torvalds fi 561da177e4SLinus Torvalds 571da177e4SLinus Torvalds echo \#define LINUX_COMPILER \"`$CC -v 2>&1 | tail -n 1`\" 581da177e4SLinus Torvalds) > .tmpcompile 591da177e4SLinus Torvalds 601da177e4SLinus Torvalds# Only replace the real compile.h if the new one is different, 611da177e4SLinus Torvalds# in order to preserve the timestamp and avoid unnecessary 621da177e4SLinus Torvalds# recompilations. 631da177e4SLinus Torvalds# We don't consider the file changed if only the date/time changed. 641da177e4SLinus Torvalds# A kernel config change will increase the generation number, thus 651da177e4SLinus Torvalds# causing compile.h to be updated (including date/time) due to the 661da177e4SLinus Torvalds# changed comment in the 671da177e4SLinus Torvalds# first line. 681da177e4SLinus Torvalds 691da177e4SLinus Torvaldsif [ -r $TARGET ] && \ 701da177e4SLinus Torvalds grep -v 'UTS_VERSION\|LINUX_COMPILE_TIME' $TARGET > .tmpver.1 && \ 711da177e4SLinus Torvalds grep -v 'UTS_VERSION\|LINUX_COMPILE_TIME' .tmpcompile > .tmpver.2 && \ 721da177e4SLinus Torvalds cmp -s .tmpver.1 .tmpver.2; then 731da177e4SLinus Torvalds rm -f .tmpcompile 741da177e4SLinus Torvaldselse 751da177e4SLinus Torvalds echo " UPD $TARGET" 761da177e4SLinus Torvalds mv -f .tmpcompile $TARGET 771da177e4SLinus Torvaldsfi 781da177e4SLinus Torvaldsrm -f .tmpver.1 .tmpver.2 79