117c5ca98SFelipe Contreras#!/bin/sh 217c5ca98SFelipe Contreras 31da177e4SLinus TorvaldsTARGET=$1 41da177e4SLinus TorvaldsARCH=$2 51da177e4SLinus TorvaldsSMP=$3 6bd5bdd87SSam RavnborgPREEMPT=$4 7bd5bdd87SSam RavnborgCC=$5 81da177e4SLinus Torvalds 9d03fab43SMike Frysingervecho() { [ "${quiet}" = "silent_" ] || echo "$@" ; } 10d03fab43SMike Frysinger 111da177e4SLinus Torvalds# If compile.h exists already and we don't own autoconf.h 121da177e4SLinus Torvalds# (i.e. we're not the same user who did make *config), don't 131da177e4SLinus Torvalds# modify compile.h 141da177e4SLinus Torvalds# So "sudo make install" won't change the "compiled by <user>" 151da177e4SLinus Torvalds# do "compiled by root" 161da177e4SLinus Torvalds 17264a2683SSam Ravnborgif [ -r $TARGET -a ! -O include/generated/autoconf.h ]; then 18d03fab43SMike Frysinger vecho " SKIPPED $TARGET" 191da177e4SLinus Torvalds exit 0 201da177e4SLinus Torvaldsfi 211da177e4SLinus Torvalds 221da177e4SLinus Torvalds# Do not expand names 231da177e4SLinus Torvaldsset -f 241da177e4SLinus Torvalds 2587c94bfbSSam Ravnborg# Fix the language to get consistent output 2687c94bfbSSam RavnborgLC_ALL=C 2787c94bfbSSam Ravnborgexport LC_ALL 2887c94bfbSSam Ravnborg 2987c94bfbSSam Ravnborgif [ -z "$KBUILD_BUILD_VERSION" ]; then 301da177e4SLinus Torvalds if [ -r .version ]; then 311da177e4SLinus Torvalds VERSION=`cat .version` 321da177e4SLinus Torvalds else 331da177e4SLinus Torvalds VERSION=0 341da177e4SLinus Torvalds echo 0 > .version 351da177e4SLinus Torvalds fi 3687c94bfbSSam Ravnborgelse 3787c94bfbSSam Ravnborg VERSION=$KBUILD_BUILD_VERSION 3887c94bfbSSam Ravnborgfi 391da177e4SLinus Torvalds 4087c94bfbSSam Ravnborgif [ -z "$KBUILD_BUILD_TIMESTAMP" ]; then 4187c94bfbSSam Ravnborg TIMESTAMP=`date` 4287c94bfbSSam Ravnborgelse 4387c94bfbSSam Ravnborg TIMESTAMP=$KBUILD_BUILD_TIMESTAMP 4487c94bfbSSam Ravnborgfi 4553e6892cSMichal Marekif test -z "$KBUILD_BUILD_USER"; then 46f0772604SMarcin Nowakowski LINUX_COMPILE_BY=$(whoami | sed 's/\\/\\\\/') 4753e6892cSMichal Marekelse 4853e6892cSMichal Marek LINUX_COMPILE_BY=$KBUILD_BUILD_USER 4953e6892cSMichal Marekfi 5053e6892cSMichal Marekif test -z "$KBUILD_BUILD_HOST"; then 5153e6892cSMichal Marek LINUX_COMPILE_HOST=`hostname` 5253e6892cSMichal Marekelse 5353e6892cSMichal Marek LINUX_COMPILE_HOST=$KBUILD_BUILD_HOST 5453e6892cSMichal Marekfi 551da177e4SLinus Torvalds 561da177e4SLinus TorvaldsUTS_VERSION="#$VERSION" 57bd5bdd87SSam RavnborgCONFIG_FLAGS="" 58bd5bdd87SSam Ravnborgif [ -n "$SMP" ] ; then CONFIG_FLAGS="SMP"; fi 59bd5bdd87SSam Ravnborgif [ -n "$PREEMPT" ] ; then CONFIG_FLAGS="$CONFIG_FLAGS PREEMPT"; fi 6087c94bfbSSam RavnborgUTS_VERSION="$UTS_VERSION $CONFIG_FLAGS $TIMESTAMP" 611da177e4SLinus Torvalds 621da177e4SLinus Torvalds# Truncate to maximum length 631da177e4SLinus Torvalds 641da177e4SLinus TorvaldsUTS_LEN=64 6517c5ca98SFelipe ContrerasUTS_TRUNCATE="cut -b -$UTS_LEN" 661da177e4SLinus Torvalds 671da177e4SLinus Torvalds# Generate a temporary compile.h 681da177e4SLinus Torvalds 691da177e4SLinus Torvalds( echo /\* This file is auto generated, version $VERSION \*/ 70bd5bdd87SSam Ravnborg if [ -n "$CONFIG_FLAGS" ] ; then echo "/* $CONFIG_FLAGS */"; fi 711da177e4SLinus Torvalds 721da177e4SLinus Torvalds echo \#define UTS_MACHINE \"$ARCH\" 731da177e4SLinus Torvalds 741da177e4SLinus Torvalds echo \#define UTS_VERSION \"`echo $UTS_VERSION | $UTS_TRUNCATE`\" 751da177e4SLinus Torvalds 7653e6892cSMichal Marek echo \#define LINUX_COMPILE_BY \"`echo $LINUX_COMPILE_BY | $UTS_TRUNCATE`\" 7753e6892cSMichal Marek echo \#define LINUX_COMPILE_HOST \"`echo $LINUX_COMPILE_HOST | $UTS_TRUNCATE`\" 781da177e4SLinus Torvalds 79adcc3f7cSJonathan Liu echo \#define LINUX_COMPILER \"`$CC -v 2>&1 | grep ' version ' | sed 's/[[:space:]]*$//'`\" 801da177e4SLinus Torvalds) > .tmpcompile 811da177e4SLinus Torvalds 821da177e4SLinus Torvalds# Only replace the real compile.h if the new one is different, 831da177e4SLinus Torvalds# in order to preserve the timestamp and avoid unnecessary 841da177e4SLinus Torvalds# recompilations. 851da177e4SLinus Torvalds# We don't consider the file changed if only the date/time changed. 861da177e4SLinus Torvalds# A kernel config change will increase the generation number, thus 871da177e4SLinus Torvalds# causing compile.h to be updated (including date/time) due to the 881da177e4SLinus Torvalds# changed comment in the 891da177e4SLinus Torvalds# first line. 901da177e4SLinus Torvalds 911da177e4SLinus Torvaldsif [ -r $TARGET ] && \ 92061296dcSMichal Marek grep -v 'UTS_VERSION' $TARGET > .tmpver.1 && \ 93061296dcSMichal Marek grep -v 'UTS_VERSION' .tmpcompile > .tmpver.2 && \ 941da177e4SLinus Torvalds cmp -s .tmpver.1 .tmpver.2; then 951da177e4SLinus Torvalds rm -f .tmpcompile 961da177e4SLinus Torvaldselse 97d03fab43SMike Frysinger vecho " UPD $TARGET" 981da177e4SLinus Torvalds mv -f .tmpcompile $TARGET 991da177e4SLinus Torvaldsfi 1001da177e4SLinus Torvaldsrm -f .tmpver.1 .tmpver.2 101