kbuild: generate include/generated/compile.h in top Makefile

[linux-block.git] / scripts / mkcompile_h

#!/bin/sh
# SPDX-License-Identifier: GPL-2.0

UTS_MACHINE=$1
CC_VERSION="$2"
LD=$3

# Do not expand names
set -f

# Fix the language to get consistent output
LC_ALL=C
export LC_ALL

if test -z "$KBUILD_BUILD_USER"; then
	LINUX_COMPILE_BY=$(whoami | sed 's/\\/\\\\/')
else
	LINUX_COMPILE_BY=$KBUILD_BUILD_USER
fi
if test -z "$KBUILD_BUILD_HOST"; then
	LINUX_COMPILE_HOST=`uname -n`
else
	LINUX_COMPILE_HOST=$KBUILD_BUILD_HOST
fi

LD_VERSION=$($LD -v | head -n1 | sed 's/(compatible with [^)]*)//' \
	      | sed 's/[[:space:]]*$//')

cat <<EOF
#define UTS_MACHINE		"${UTS_MACHINE}"
#define LINUX_COMPILE_BY	"${LINUX_COMPILE_BY}"
#define LINUX_COMPILE_HOST	"${LINUX_COMPILE_HOST}"
#define LINUX_COMPILER		"${CC_VERSION}, ${LD_VERSION}"
EOF