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 3037131ec4SMasahiro Yamada VERSION=$(cat .version 2>/dev/null || echo 1) 3187c94bfbSSam Ravnborgelse 3287c94bfbSSam Ravnborg VERSION=$KBUILD_BUILD_VERSION 3387c94bfbSSam Ravnborgfi 341da177e4SLinus Torvalds 3587c94bfbSSam Ravnborgif [ -z "$KBUILD_BUILD_TIMESTAMP" ]; then 3687c94bfbSSam Ravnborg TIMESTAMP=`date` 3787c94bfbSSam Ravnborgelse 3887c94bfbSSam Ravnborg TIMESTAMP=$KBUILD_BUILD_TIMESTAMP 3987c94bfbSSam Ravnborgfi 4053e6892cSMichal Marekif test -z "$KBUILD_BUILD_USER"; then 41f0772604SMarcin Nowakowski LINUX_COMPILE_BY=$(whoami | sed 's/\\/\\\\/') 4253e6892cSMichal Marekelse 4353e6892cSMichal Marek LINUX_COMPILE_BY=$KBUILD_BUILD_USER 4453e6892cSMichal Marekfi 4553e6892cSMichal Marekif test -z "$KBUILD_BUILD_HOST"; then 4653e6892cSMichal Marek LINUX_COMPILE_HOST=`hostname` 4753e6892cSMichal Marekelse 4853e6892cSMichal Marek LINUX_COMPILE_HOST=$KBUILD_BUILD_HOST 4953e6892cSMichal Marekfi 501da177e4SLinus Torvalds 511da177e4SLinus TorvaldsUTS_VERSION="#$VERSION" 52bd5bdd87SSam RavnborgCONFIG_FLAGS="" 53bd5bdd87SSam Ravnborgif [ -n "$SMP" ] ; then CONFIG_FLAGS="SMP"; fi 54bd5bdd87SSam Ravnborgif [ -n "$PREEMPT" ] ; then CONFIG_FLAGS="$CONFIG_FLAGS PREEMPT"; fi 5587c94bfbSSam RavnborgUTS_VERSION="$UTS_VERSION $CONFIG_FLAGS $TIMESTAMP" 561da177e4SLinus Torvalds 571da177e4SLinus Torvalds# Truncate to maximum length 581da177e4SLinus Torvalds 591da177e4SLinus TorvaldsUTS_LEN=64 6017c5ca98SFelipe ContrerasUTS_TRUNCATE="cut -b -$UTS_LEN" 611da177e4SLinus Torvalds 621da177e4SLinus Torvalds# Generate a temporary compile.h 631da177e4SLinus Torvalds 641da177e4SLinus Torvalds( echo /\* This file is auto generated, version $VERSION \*/ 65bd5bdd87SSam Ravnborg if [ -n "$CONFIG_FLAGS" ] ; then echo "/* $CONFIG_FLAGS */"; fi 661da177e4SLinus Torvalds 671da177e4SLinus Torvalds echo \#define UTS_MACHINE \"$ARCH\" 681da177e4SLinus Torvalds 691da177e4SLinus Torvalds echo \#define UTS_VERSION \"`echo $UTS_VERSION | $UTS_TRUNCATE`\" 701da177e4SLinus Torvalds 7153e6892cSMichal Marek echo \#define LINUX_COMPILE_BY \"`echo $LINUX_COMPILE_BY | $UTS_TRUNCATE`\" 7253e6892cSMichal Marek echo \#define LINUX_COMPILE_HOST \"`echo $LINUX_COMPILE_HOST | $UTS_TRUNCATE`\" 731da177e4SLinus Torvalds 74adcc3f7cSJonathan Liu echo \#define LINUX_COMPILER \"`$CC -v 2>&1 | grep ' version ' | sed 's/[[:space:]]*$//'`\" 751da177e4SLinus Torvalds) > .tmpcompile 761da177e4SLinus Torvalds 771da177e4SLinus Torvalds# Only replace the real compile.h if the new one is different, 781da177e4SLinus Torvalds# in order to preserve the timestamp and avoid unnecessary 791da177e4SLinus Torvalds# recompilations. 801da177e4SLinus Torvalds# We don't consider the file changed if only the date/time changed. 811da177e4SLinus Torvalds# A kernel config change will increase the generation number, thus 821da177e4SLinus Torvalds# causing compile.h to be updated (including date/time) due to the 831da177e4SLinus Torvalds# changed comment in the 841da177e4SLinus Torvalds# first line. 851da177e4SLinus Torvalds 861da177e4SLinus Torvaldsif [ -r $TARGET ] && \ 87061296dcSMichal Marek grep -v 'UTS_VERSION' $TARGET > .tmpver.1 && \ 88061296dcSMichal Marek grep -v 'UTS_VERSION' .tmpcompile > .tmpver.2 && \ 891da177e4SLinus Torvalds cmp -s .tmpver.1 .tmpver.2; then 901da177e4SLinus Torvalds rm -f .tmpcompile 911da177e4SLinus Torvaldselse 92d03fab43SMike Frysinger vecho " UPD $TARGET" 931da177e4SLinus Torvalds mv -f .tmpcompile $TARGET 941da177e4SLinus Torvaldsfi 951da177e4SLinus Torvaldsrm -f .tmpver.1 .tmpver.2 96