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100 lines
2.5 KiB
100 lines
2.5 KiB
#!/bin/sh |
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TARGET=$1 |
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ARCH=$2 |
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SMP=$3 |
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PREEMPT=$4 |
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CC=$5 |
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vecho() { [ "${quiet}" = "silent_" ] || echo "$@" ; } |
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# If compile.h exists already and we don't own autoconf.h |
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# (i.e. we're not the same user who did make *config), don't |
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# modify compile.h |
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# So "sudo make install" won't change the "compiled by <user>" |
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# do "compiled by root" |
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if [ -r $TARGET -a ! -O include/generated/autoconf.h ]; then |
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vecho " SKIPPED $TARGET" |
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exit 0 |
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fi |
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# Do not expand names |
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set -f |
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# Fix the language to get consistent output |
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LC_ALL=C |
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export LC_ALL |
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if [ -z "$KBUILD_BUILD_VERSION" ]; then |
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if [ -r .version ]; then |
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VERSION=`cat .version` |
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else |
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VERSION=0 |
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echo 0 > .version |
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fi |
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else |
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VERSION=$KBUILD_BUILD_VERSION |
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fi |
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if [ -z "$KBUILD_BUILD_TIMESTAMP" ]; then |
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TIMESTAMP=`date` |
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else |
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TIMESTAMP=$KBUILD_BUILD_TIMESTAMP |
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fi |
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if test -z "$KBUILD_BUILD_USER"; then |
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LINUX_COMPILE_BY=$(whoami | sed 's/\\/\\\\/') |
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else |
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LINUX_COMPILE_BY=$KBUILD_BUILD_USER |
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fi |
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if test -z "$KBUILD_BUILD_HOST"; then |
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LINUX_COMPILE_HOST=`hostname` |
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else |
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LINUX_COMPILE_HOST=$KBUILD_BUILD_HOST |
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fi |
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UTS_VERSION="#$VERSION" |
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CONFIG_FLAGS="" |
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if [ -n "$SMP" ] ; then CONFIG_FLAGS="SMP"; fi |
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if [ -n "$PREEMPT" ] ; then CONFIG_FLAGS="$CONFIG_FLAGS PREEMPT"; fi |
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UTS_VERSION="$UTS_VERSION $CONFIG_FLAGS $TIMESTAMP" |
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# Truncate to maximum length |
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UTS_LEN=64 |
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UTS_TRUNCATE="cut -b -$UTS_LEN" |
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# Generate a temporary compile.h |
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( echo /\* This file is auto generated, version $VERSION \*/ |
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if [ -n "$CONFIG_FLAGS" ] ; then echo "/* $CONFIG_FLAGS */"; fi |
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echo \#define UTS_MACHINE \"$ARCH\" |
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echo \#define UTS_VERSION \"`echo $UTS_VERSION | $UTS_TRUNCATE`\" |
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echo \#define LINUX_COMPILE_BY \"`echo $LINUX_COMPILE_BY | $UTS_TRUNCATE`\" |
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echo \#define LINUX_COMPILE_HOST \"`echo $LINUX_COMPILE_HOST | $UTS_TRUNCATE`\" |
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echo \#define LINUX_COMPILER \"`$CC -v 2>&1 | grep ' version '`\" |
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) > .tmpcompile |
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# Only replace the real compile.h if the new one is different, |
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# in order to preserve the timestamp and avoid unnecessary |
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# recompilations. |
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# We don't consider the file changed if only the date/time changed. |
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# A kernel config change will increase the generation number, thus |
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# causing compile.h to be updated (including date/time) due to the |
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# changed comment in the |
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# first line. |
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if [ -r $TARGET ] && \ |
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grep -v 'UTS_VERSION' $TARGET > .tmpver.1 && \ |
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grep -v 'UTS_VERSION' .tmpcompile > .tmpver.2 && \ |
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cmp -s .tmpver.1 .tmpver.2; then |
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rm -f .tmpcompile |
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else |
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vecho " UPD $TARGET" |
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mv -f .tmpcompile $TARGET |
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fi |
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rm -f .tmpver.1 .tmpver.2
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