[lttng-ci.git] / scripts / lttng-modules / param-build.sh

#!/bin/sh -exu
#
# Copyright (C) 2016 - Michael Jeanson <mjeanson@efficios.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

## FUNCTIONS ##

# Kernel version compare functions
verlte() {
    [  "$1" = "$(printf '%s\n%s' "$1" "$2" | sort -V | head -n1)" ]
}

verlt() {
    [ "$1" = "$2" ] && return 1 || verlte "$1" "$2"
}

vergte() {
    [  "$1" = "$(printf '%s\n%s' "$1" "$2" | sort -V | tail -n1)" ]
}

vergt() {
    [ "$1" = "$2" ] && return 1 || vergte "$1" "$2"
}


prepare_lnx_sources() {

    outdir=$1

    if [ "$outdir" = "." ]; then
      koutput=""
    else
      koutput="O=\"${outdir}\""
    fi

    # Generate kernel configuration
    case "$ktag" in
      Ubuntu*)
        fakeroot debian/rules clean
        fakeroot debian/rules genconfigs
        cp CONFIGS/"${ubuntu_config}" "${outdir}"/.config
        ;;
      *)
        # Que sera sera
        make "${vanilla_config}" CC="$CC" ${koutput}
        ;;
    esac

    # GCC 4.8
    sed -i "s/CONFIG_CC_STACKPROTECTOR_STRONG=y/# CONFIG_CC_STACKPROTECTOR_STRONG is not set/g" "${outdir}"/.config

    # Don't try to sign modules
    sed -i "s/CONFIG_MODULE_SIG=y/# CONFIG_MODULE_SIG is not set/g" "${outdir}"/.config

    # Disable kernel stack frame correctness validation, introduced in 4.6.0 and currently fails
    sed -i "s/CONFIG_STACK_VALIDATION=y/# CONFIG_STACK_VALIDATION is not set/g" "${outdir}"/.config

    # Set required options
    {
        echo "CONFIG_KPROBES=y";
        echo "CONFIG_FTRACE=y";
        echo "CONFIG_BLK_DEV_IO_TRACE=y";
        echo "CONFIG_TRACEPOINTS=y";
        echo "CONFIG_KALLSYMS_ALL=y";
    } >> "${outdir}"/.config


    make "$oldconf_target" CC="$CC" ${koutput}
    make modules_prepare CC="$CC" ${koutput}

    # Debug
    #cat "${outdir}"/.config

    # On powerpc this object is required to link modules
    if [ "${karch}" = "powerpc" ]; then
        make arch/powerpc/lib/crtsavres.o CC="$CC" ${koutput}
    fi

    # On arm64 this object is required to build with ftrace support
    if [ "${karch}" = "arm64" ]; then
        if vergte "$KVERSION" "4.13-rc1"; then
            make arch/arm64/kernel/ftrace-mod.o CC="$CC" ${koutput}
        fi
    fi

    # Version specific tasks
    case "$ktag" in
      Ubuntu*)
        # Add Ubuntu ABI number to kernel headers, this is normally done by the packaging code
        ABINUM="$(echo "$ktag" | grep -P -o 'Ubuntu-(lts-)?.*-\K\d+(?=\..*)')"
        echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> "${outdir}"/include/generated/utsrelease.h
        ;;
    esac
}


build_modules() {

    kdir="$1"
    bdir="$2"

    # Enter lttng-modules source dir
    cd "${LTTSRCDIR}"

    # kernels 3.10 to 3.10.13 and 3.11 to 3.11.2 introduce a deadlock in the
    # timekeeping subsystem. We want those build to fail.
    if { vergte "$KVERSION" "3.10" && verlte "$KVERSION" "3.10.13"; } || \
       { vergte "$KVERSION" "3.11" && verlte "$KVERSION" "3.11.2"; }; then

        set +e

        # Build modules
        KERNELDIR="${kdir}" make -j"${NPROC}" V=1 CC="$CC"

        # We expect this build to fail, if it doesn't, fail the job.
        if [ "$?" -eq 0 ]; then
            echo "This build should have failed."
            exit 1
        fi

        # We have to publish at least one file or the build will fail
        echo "This kernel is broken, there is a deadlock in the timekeeping subsystem." > "${bdir}/BROKEN.txt.ko"

        set -e

        KERNELDIR="${kdir}" make clean CC="$CC"

    else # Regular build

        # Build modules against full kernel sources
        KERNELDIR="${kdir}" make -j"${NPROC}" V=1 CC="$CC"

        # Install modules to build dir
        KERNELDIR="${kdir}" make INSTALL_MOD_PATH="${bdir}" modules_install CC="$CC"

        # Clean build dir
        KERNELDIR="${kdir}" make clean CC="$CC"
    fi
}


## MAIN ##

# Use all CPU cores
NPROC=$(nproc)

LTTSRCDIR="${WORKSPACE}/src/lttng-modules"
LNXSRCDIR="${WORKSPACE}/src/linux"

LNXBUILDDIR="${WORKSPACE}/build/linux"
LNXHDRDIR="${WORKSPACE}/build/linux-headers"

LTTBUILDKSRCDIR="${WORKSPACE}/build/lttng-modules-ksrc"
LTTBUILDKHDRDIR="${WORKSPACE}/build/lttng-modules-khdr"


# Setup cross compile env if available
if [ "x${cross_arch:-}" != "x" ]; then

    case "$cross_arch" in
        "armhf")
            karch="arm"
            cross_compile="arm-linux-gnueabihf-"
            vanilla_config="allyesconfig"
            ubuntu_config="armhf-config.flavour.generic"
            ;;

        "arm64")
            karch="arm64"
            cross_compile="aarch64-linux-gnu-"
            vanilla_config="allyesconfig"
            ubuntu_config="arm64-config.flavour.generic"
            ;;

        "powerpc")
            karch="powerpc"
            cross_compile="powerpc-linux-gnu-"
            vanilla_config="ppc44x_defconfig"
            ubuntu_config="powerpc-config.flavour.powerpc-smp"
            ;;

        "ppc64el")
            karch="powerpc"
            cross_compile="powerpc64le-linux-gnu-"
            vanilla_config="pseries_le_defconfig"
            ubuntu_config="ppc64el-config.flavour.generic"
            ;;

        *)
            echo "Unsupported cross arch $cross_arch"
            exit 1
            ;;
    esac

    # Use gcc 4.9, older kernel don't build with gcc 5
    CC="${cross_compile}gcc-4.9"

    # Export variables used by Kbuild for cross compilation
    export ARCH="${karch}"
    export CROSS_COMPILE="${cross_compile}"

    oldconf_target="olddefconfig"

# Set arch specific values if we are not cross compiling
elif [ "x${arch:-}" != "x" ]; then

    case "$arch" in
        "x86-32")
            karch="x86"
            vanilla_config="allyesconfig"
            ubuntu_config="i386-config.flavour.generic"
            ;;

        "x86-64")
            karch="x86"
            vanilla_config="allyesconfig"
            ubuntu_config="amd64-config.flavour.generic"
            ;;

        "armhf")
            karch="arm"
            vanilla_config="allyesconfig"
            ubuntu_config="armhf-config.flavour.generic"
            ;;

        "arm64")
            karch="arm64"
            vanilla_config="allyesconfig"
            ubuntu_config="arm64-config.flavour.generic"
            ;;

        "powerpc")
            karch="powerpc"
            vanilla_config="allyesconfig"
            ubuntu_config="powerpc-config.flavour.powerpc-smp"
            ;;

        "ppc64el")
            karch="powerpc"
            vanilla_config="allyesconfig"
            ubuntu_config="ppc64el-config.flavour.generic"
            ;;

        *)
            echo "Unsupported arch $arch"
            exit 1
            ;;
    esac

    # Use gcc 4.9, older kernel don't build with gcc 5
    CC=gcc-4.9

    oldconf_target="silentoldconfig"

else
    echo "Not arch or cross_arch specified"
    exit 1
fi


# Create build directories
mkdir -p "${LNXBUILDDIR}" "${LNXHDRDIR}" "${LTTBUILDKSRCDIR}" "${LTTBUILDKHDRDIR}"


## PREPARE DISTRO STYLE KERNEL HEADERS / DEVEL

# Enter linux source dir
cd "${LNXSRCDIR}"

# Get kernel version from source tree
KVERSION=$(make kernelversion)

prepare_lnx_sources "."

# For RT kernels, copy version file
if [ -s localversion-rt ]; then
    cp -a localversion-rt "${LNXHDRDIR}"
fi

# Copy all Makefile related stuff
find . -path './include/*' -prune \
    -o -path './scripts/*' -prune -o -type f \
	\( -name 'Makefile*' -o -name 'Kconfig*' -o -name 'Kbuild*' -o \
        -name '*.sh' -o -name '*.pl' -o -name '*.lds' \) \
    -print | cpio -pd --preserve-modification-time "${LNXHDRDIR}"

# Copy base scripts and include dirs
cp -a scripts include "${LNXHDRDIR}"

# Copy arch includes
(find arch -name include -type d -print0 | \
    xargs -0 -n1 -i: find : -type f) | \
	cpio -pd --preserve-modification-time "${LNXHDRDIR}"

# Copy arch scripts
(find arch -name scripts -type d -print0 | \
    xargs -0 -n1 -i: find : -type f) | \
	cpio -pd --preserve-modification-time "${LNXHDRDIR}"

# Cleanup scripts
rm -f "${LNXHDRDIR}/scripts/*.o"
rm -f "${LNXHDRDIR}/scripts/*/*.o"

# On powerpc this object is required to link modules
if [ "${karch}" = "powerpc" ]; then
    cp -a --parents arch/powerpc/lib/crtsavres.[So] "${LNXHDRDIR}/"
fi

# On arm64 this object is required to build with ftrace support
if [ "${karch}" = "arm64" ]; then
    if vergte "$KVERSION" "4.13-rc1"; then
        cp -a --parents arch/arm64/kernel/ftrace-mod.[So] "${LNXHDRDIR}/"
    fi
fi

# Copy modules related stuff, if available
if [ -s Module.symvers ]; then
    cp Module.symvers "${LNXHDRDIR}"
fi

if [ -s System.map ]; then
    cp System.map "${LNXHDRDIR}"
fi

if [ -s Module.markers ]; then
    cp Module.markers "${LNXHDRDIR}"
fi

# Copy config file
cp .config "${LNXHDRDIR}"

# Make sure the Makefile and version.h have a matching timestamp so that
# external modules can be built
if [ -s "${LNXHDRDIR}/include/generated/uapi/linux/version.h" ]; then
    touch -r "${LNXHDRDIR}/Makefile" "${LNXHDRDIR}/include/generated/uapi/linux/version.h"
elif [ -s "${LNXHDRDIR}/include/linux/version.h" ]; then
    touch -r "${LNXHDRDIR}/Makefile" "${LNXHDRDIR}/include/linux/version.h"
else
    echo "Missing version.h"
    exit 1
fi
touch -r "${LNXHDRDIR}/.config" "${LNXHDRDIR}/include/generated/autoconf.h"

# Copy .config to include/config/auto.conf so "make prepare" is unnecessary.
cp "${LNXHDRDIR}/.config" "${LNXHDRDIR}/include/config/auto.conf"


## PREPARE FULL LINUX SOURCE TREE

# Enter linux source dir
cd "${LNXSRCDIR}"

# Make sure linux source dir is clean
git clean -xdf

prepare_lnx_sources "${LNXBUILDDIR}"


## BUILD modules

# Build modules against full kernel sources
build_modules "${LNXBUILDDIR}" "${LTTBUILDKSRCDIR}"

# Build modules against kernel headers
build_modules "${LNXHDRDIR}" "${LTTBUILDKHDRDIR}"

# Make sure modules were built
tree "${LTTBUILDKSRCDIR}"
if [ "x$(find "${LTTBUILDKSRCDIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then
  echo "No modules built!"
  exit 1
fi

tree "${LTTBUILDKHDRDIR}"
if [ "x$(find "${LTTBUILDKHDRDIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then
  echo "No modules built!"
  exit 1
fi

# EOF
Commit	Line	Data
f3d8604b MJ	1	#!/bin/sh -exu
	2	#
	3	# Copyright (C) 2016 - Michael Jeanson <mjeanson@efficios.com>
	4	#
	5	# This program is free software: you can redistribute it and/or modify
	6	# it under the terms of the GNU General Public License as published by
	7	# the Free Software Foundation, either version 3 of the License, or
	8	# (at your option) any later version.
	9	#
	10	# This program is distributed in the hope that it will be useful,
	11	# but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	# GNU General Public License for more details.
	14	#
	15	# You should have received a copy of the GNU General Public License
	16	# along with this program. If not, see <http://www.gnu.org/licenses/>.
	17
339db64d MJ	18	## FUNCTIONS ##
339db64d MJ	19
f3d8604b MJ	20	# Kernel version compare functions
f3d8604b MJ	21	verlte() {
51fa2ab3	22	[ "$1" = "$(printf '%s\n%s' "$1" "$2" \| sort -V \| head -n1)" ]
f3d8604b MJ	23	}
	24
	25	verlt() {
51fa2ab3	26	[ "$1" = "$2" ] && return 1 \|\| verlte "$1" "$2"
f3d8604b MJ	27	}
	28
	29	vergte() {
51fa2ab3	30	[ "$1" = "$(printf '%s\n%s' "$1" "$2" \| sort -V \| tail -n1)" ]
f3d8604b MJ	31	}
	32
	33	vergt() {
51fa2ab3	34	[ "$1" = "$2" ] && return 1 \|\| vergte "$1" "$2"
f3d8604b MJ	35	}
f3d8604b MJ	36
339db64d	37
7e02032c MJ	38	prepare_lnx_sources() {
	39
	40	outdir=$1
	41
	42	if [ "$outdir" = "." ]; then
	43	koutput=""
	44	else
	45	koutput="O=\"${outdir}\""
	46	fi
	47
	48	# Generate kernel configuration
a1ae361e	49	case "$ktag" in
7e02032c MJ	50	Ubuntu*)
	51	fakeroot debian/rules clean
	52	fakeroot debian/rules genconfigs
51fa2ab3	53	cp CONFIGS/"${ubuntu_config}" "${outdir}"/.config
7e02032c MJ	54	;;
7e02032c MJ	55	*)
a822250c	56	# Que sera sera
51fa2ab3	57	make "${vanilla_config}" CC="$CC" ${koutput}
7e02032c MJ	58	;;
	59	esac
	60
	61	# GCC 4.8
	62	sed -i "s/CONFIG_CC_STACKPROTECTOR_STRONG=y/# CONFIG_CC_STACKPROTECTOR_STRONG is not set/g" "${outdir}"/.config
	63
	64	# Don't try to sign modules
	65	sed -i "s/CONFIG_MODULE_SIG=y/# CONFIG_MODULE_SIG is not set/g" "${outdir}"/.config
	66
9ef18fa2 MJ	67	# Disable kernel stack frame correctness validation, introduced in 4.6.0 and currently fails
	68	sed -i "s/CONFIG_STACK_VALIDATION=y/# CONFIG_STACK_VALIDATION is not set/g" "${outdir}"/.config
	69
51fa2ab3 MJ	70	# Set required options
	71	{
	72	echo "CONFIG_KPROBES=y";
	73	echo "CONFIG_FTRACE=y";
	74	echo "CONFIG_BLK_DEV_IO_TRACE=y";
	75	echo "CONFIG_TRACEPOINTS=y";
	76	echo "CONFIG_KALLSYMS_ALL=y";
	77	} >> "${outdir}"/.config
7e02032c MJ	78
7e02032c MJ	79
51fa2ab3 MJ	80	make "$oldconf_target" CC="$CC" ${koutput}
	81	make modules_prepare CC="$CC" ${koutput}
	82
	83	# Debug
	84	#cat "${outdir}"/.config
7e02032c	85
d815b018 MJ	86	# On powerpc this object is required to link modules
	87	if [ "${karch}" = "powerpc" ]; then
	88	make arch/powerpc/lib/crtsavres.o CC="$CC" ${koutput}
	89	fi
	90
a1ae361e MJ	91	# On arm64 this object is required to build with ftrace support
	92	if [ "${karch}" = "arm64" ]; then
	93	if vergte "$KVERSION" "4.13-rc1"; then
	94	make arch/arm64/kernel/ftrace-mod.o CC="$CC" ${koutput}
	95	fi
	96	fi
	97
7e02032c	98	# Version specific tasks
a1ae361e	99	case "$ktag" in
7e02032c MJ	100	Ubuntu*)
7e02032c MJ	101	# Add Ubuntu ABI number to kernel headers, this is normally done by the packaging code
a1ae361e	102	ABINUM="$(echo "$ktag" \| grep -P -o 'Ubuntu-(lts-)?.-\K\d+(?=\..)')"
51fa2ab3	103	echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> "${outdir}"/include/generated/utsrelease.h
7e02032c MJ	104	;;
7e02032c MJ	105	esac
7e02032c MJ	106	}
	107
	108
	109
339db64d MJ	110	build_modules() {
	111
	112	kdir="$1"
	113	bdir="$2"
	114
339db64d MJ	115	# Enter lttng-modules source dir
	116	cd "${LTTSRCDIR}"
	117
	118	# kernels 3.10 to 3.10.13 and 3.11 to 3.11.2 introduce a deadlock in the
	119	# timekeeping subsystem. We want those build to fail.
a1ae361e MJ	120	if { vergte "$KVERSION" "3.10" && verlte "$KVERSION" "3.10.13"; } \|\| \
a1ae361e MJ	121	{ vergte "$KVERSION" "3.11" && verlte "$KVERSION" "3.11.2"; }; then
339db64d MJ	122
	123	set +e
	124
	125	# Build modules
51fa2ab3	126	KERNELDIR="${kdir}" make -j"${NPROC}" V=1 CC="$CC"
339db64d MJ	127
	128	# We expect this build to fail, if it doesn't, fail the job.
	129	if [ "$?" -eq 0 ]; then
e9b44189	130	echo "This build should have failed."
339db64d MJ	131	exit 1
	132	fi
	133
	134	# We have to publish at least one file or the build will fail
7e02032c	135	echo "This kernel is broken, there is a deadlock in the timekeeping subsystem." > "${bdir}/BROKEN.txt.ko"
339db64d MJ	136
	137	set -e
	138
51fa2ab3	139	KERNELDIR="${kdir}" make clean CC="$CC"
7e02032c	140
339db64d MJ	141	else # Regular build
	142
	143	# Build modules against full kernel sources
51fa2ab3	144	KERNELDIR="${kdir}" make -j"${NPROC}" V=1 CC="$CC"
339db64d MJ	145
339db64d MJ	146	# Install modules to build dir
51fa2ab3	147	KERNELDIR="${kdir}" make INSTALL_MOD_PATH="${bdir}" modules_install CC="$CC"
339db64d MJ	148
339db64d MJ	149	# Clean build dir
51fa2ab3	150	KERNELDIR="${kdir}" make clean CC="$CC"
339db64d MJ	151	fi
	152	}
	153
	154
	155	## MAIN ##
	156
f3d8604b MJ	157	# Use all CPU cores
	158	NPROC=$(nproc)
	159
339db64d MJ	160	LTTSRCDIR="${WORKSPACE}/src/lttng-modules"
	161	LNXSRCDIR="${WORKSPACE}/src/linux"
	162
	163	LNXBUILDDIR="${WORKSPACE}/build/linux"
	164	LNXHDRDIR="${WORKSPACE}/build/linux-headers"
	165
a822250c	166	LTTBUILDKSRCDIR="${WORKSPACE}/build/lttng-modules-ksrc"
339db64d MJ	167	LTTBUILDKHDRDIR="${WORKSPACE}/build/lttng-modules-khdr"
	168
	169
7e02032c MJ	170	# Setup cross compile env if available
	171	if [ "x${cross_arch:-}" != "x" ]; then
	172
	173	case "$cross_arch" in
	174	"armhf")
	175	karch="arm"
	176	cross_compile="arm-linux-gnueabihf-"
e9b44189	177	vanilla_config="allyesconfig"
7e02032c MJ	178	ubuntu_config="armhf-config.flavour.generic"
	179	;;
	180
	181	"arm64")
	182	karch="arm64"
	183	cross_compile="aarch64-linux-gnu-"
e9b44189	184	vanilla_config="allyesconfig"
7e02032c MJ	185	ubuntu_config="arm64-config.flavour.generic"
	186	;;
	187
	188	"powerpc")
	189	karch="powerpc"
	190	cross_compile="powerpc-linux-gnu-"
e9b44189	191	vanilla_config="ppc44x_defconfig"
7e02032c MJ	192	ubuntu_config="powerpc-config.flavour.powerpc-smp"
	193	;;
	194
	195	"ppc64el")
	196	karch="powerpc"
	197	cross_compile="powerpc64le-linux-gnu-"
e9b44189	198	vanilla_config="pseries_le_defconfig"
7e02032c MJ	199	ubuntu_config="ppc64el-config.flavour.generic"
	200	;;
	201
	202	*)
51fa2ab3	203	echo "Unsupported cross arch $cross_arch"
7e02032c MJ	204	exit 1
	205	;;
	206	esac
339db64d	207
fca23c5a MJ	208	# Use gcc 4.9, older kernel don't build with gcc 5
fca23c5a MJ	209	CC="${cross_compile}gcc-4.9"
e9b44189	210
7e02032c MJ	211	# Export variables used by Kbuild for cross compilation
	212	export ARCH="${karch}"
	213	export CROSS_COMPILE="${cross_compile}"
339db64d	214
e0552fd7 MJ	215	oldconf_target="olddefconfig"
e0552fd7 MJ	216
7e02032c MJ	217	# Set arch specific values if we are not cross compiling
7e02032c MJ	218	elif [ "x${arch:-}" != "x" ]; then
e9b44189	219
7e02032c MJ	220	case "$arch" in
	221	"x86-32")
	222	karch="x86"
e9b44189	223	vanilla_config="allyesconfig"
7e02032c MJ	224	ubuntu_config="i386-config.flavour.generic"
	225	;;
	226
	227	"x86-64")
	228	karch="x86"
e9b44189	229	vanilla_config="allyesconfig"
7e02032c MJ	230	ubuntu_config="amd64-config.flavour.generic"
	231	;;
	232
	233	"armhf")
	234	karch="arm"
e9b44189	235	vanilla_config="allyesconfig"
7e02032c MJ	236	ubuntu_config="armhf-config.flavour.generic"
	237	;;
	238
	239	"arm64")
	240	karch="arm64"
e9b44189	241	vanilla_config="allyesconfig"
7e02032c MJ	242	ubuntu_config="arm64-config.flavour.generic"
	243	;;
	244
	245	"powerpc")
	246	karch="powerpc"
e9b44189	247	vanilla_config="allyesconfig"
7e02032c MJ	248	ubuntu_config="powerpc-config.flavour.powerpc-smp"
	249	;;
	250
	251	"ppc64el")
	252	karch="powerpc"
e9b44189	253	vanilla_config="allyesconfig"
7e02032c MJ	254	ubuntu_config="ppc64el-config.flavour.generic"
	255	;;
	256
	257	*)
	258	echo "Unsupported arch $arch"
	259	exit 1
	260	;;
	261	esac
e9b44189 MJ	262
	263	# Use gcc 4.9, older kernel don't build with gcc 5
	264	CC=gcc-4.9
	265
e0552fd7 MJ	266	oldconf_target="silentoldconfig"
e0552fd7 MJ	267
7e02032c MJ	268	else
	269	echo "Not arch or cross_arch specified"
	270	exit 1
	271	fi
339db64d	272
339db64d	273
b214d997	274
339db64d MJ	275
339db64d MJ	276	# Create build directories
a822250c	277	mkdir -p "${LNXBUILDDIR}" "${LNXHDRDIR}" "${LTTBUILDKSRCDIR}" "${LTTBUILDKHDRDIR}"
7e02032c	278
339db64d MJ	279
	280
	281	## PREPARE DISTRO STYLE KERNEL HEADERS / DEVEL
	282
	283	# Enter linux source dir
	284	cd "${LNXSRCDIR}"
	285
a1ae361e MJ	286	# Get kernel version from source tree
	287	KVERSION=$(make kernelversion)
	288
7e02032c	289	prepare_lnx_sources "."
339db64d	290
b214d997 MJ	291	# For RT kernels, copy version file
	292	if [ -s localversion-rt ]; then
	293	cp -a localversion-rt "${LNXHDRDIR}"
339db64d MJ	294	fi
339db64d MJ	295
b214d997 MJ	296	# Copy all Makefile related stuff
	297	find . -path './include/*' -prune \
	298	-o -path './scripts/*' -prune -o -type f \
	299	\( -name 'Makefile' -o -name 'Kconfig' -o -name 'Kbuild*' -o \
	300	-name '.sh' -o -name '.pl' -o -name '*.lds' \) \
	301	-print \| cpio -pd --preserve-modification-time "${LNXHDRDIR}"
339db64d	302
b214d997 MJ	303	# Copy base scripts and include dirs
b214d997 MJ	304	cp -a scripts include "${LNXHDRDIR}"
339db64d	305
b214d997	306	# Copy arch includes
51fa2ab3 MJ	307	(find arch -name include -type d -print0 \| \
51fa2ab3 MJ	308	xargs -0 -n1 -i: find : -type f) \| \
b214d997	309	cpio -pd --preserve-modification-time "${LNXHDRDIR}"
339db64d	310
b214d997	311	# Copy arch scripts
51fa2ab3 MJ	312	(find arch -name scripts -type d -print0 \| \
51fa2ab3 MJ	313	xargs -0 -n1 -i: find : -type f) \| \
b214d997	314	cpio -pd --preserve-modification-time "${LNXHDRDIR}"
339db64d	315
b214d997	316	# Cleanup scripts
339db64d MJ	317	rm -f "${LNXHDRDIR}/scripts/*.o"
	318	rm -f "${LNXHDRDIR}/scripts//.o"
	319
b214d997	320	# On powerpc this object is required to link modules
339db64d MJ	321	if [ "${karch}" = "powerpc" ]; then
	322	cp -a --parents arch/powerpc/lib/crtsavres.[So] "${LNXHDRDIR}/"
	323	fi
	324
a1ae361e MJ	325	# On arm64 this object is required to build with ftrace support
	326	if [ "${karch}" = "arm64" ]; then
	327	if vergte "$KVERSION" "4.13-rc1"; then
	328	cp -a --parents arch/arm64/kernel/ftrace-mod.[So] "${LNXHDRDIR}/"
	329	fi
	330	fi
	331
b214d997 MJ	332	# Copy modules related stuff, if available
	333	if [ -s Module.symvers ]; then
	334	cp Module.symvers "${LNXHDRDIR}"
	335	fi
	336
	337	if [ -s System.map ]; then
	338	cp System.map "${LNXHDRDIR}"
	339	fi
	340
	341	if [ -s Module.markers ]; then
	342	cp Module.markers "${LNXHDRDIR}"
339db64d MJ	343	fi
339db64d MJ	344
b214d997 MJ	345	# Copy config file
b214d997 MJ	346	cp .config "${LNXHDRDIR}"
339db64d MJ	347
	348	# Make sure the Makefile and version.h have a matching timestamp so that
	349	# external modules can be built
	350	if [ -s "${LNXHDRDIR}/include/generated/uapi/linux/version.h" ]; then
	351	touch -r "${LNXHDRDIR}/Makefile" "${LNXHDRDIR}/include/generated/uapi/linux/version.h"
	352	elif [ -s "${LNXHDRDIR}/include/linux/version.h" ]; then
	353	touch -r "${LNXHDRDIR}/Makefile" "${LNXHDRDIR}/include/linux/version.h"
	354	else
	355	echo "Missing version.h"
	356	exit 1
	357	fi
	358	touch -r "${LNXHDRDIR}/.config" "${LNXHDRDIR}/include/generated/autoconf.h"
	359
	360	# Copy .config to include/config/auto.conf so "make prepare" is unnecessary.
	361	cp "${LNXHDRDIR}/.config" "${LNXHDRDIR}/include/config/auto.conf"
	362
	363
	364
	365
	366	## PREPARE FULL LINUX SOURCE TREE
f3d8604b MJ	367
	368	# Enter linux source dir
	369	cd "${LNXSRCDIR}"
	370
339db64d	371	# Make sure linux source dir is clean
7e02032c	372	git clean -xdf
f3d8604b	373
7e02032c	374	prepare_lnx_sources "${LNXBUILDDIR}"
b214d997	375
f3d8604b	376
7e02032c	377	## BUILD modules
f3d8604b	378
339db64d	379	# Build modules against full kernel sources
a822250c	380	build_modules "${LNXBUILDDIR}" "${LTTBUILDKSRCDIR}"
f3d8604b	381
339db64d MJ	382	# Build modules against kernel headers
339db64d MJ	383	build_modules "${LNXHDRDIR}" "${LTTBUILDKHDRDIR}"
f3d8604b	384
b214d997	385	# Make sure modules were built
a822250c MJ	386	tree "${LTTBUILDKSRCDIR}"
a822250c MJ	387	if [ "x$(find "${LTTBUILDKSRCDIR}" -name '.ko' -printf yes -quit)" != "xyes" ]; then
7e02032c MJ	388	echo "No modules built!"
	389	exit 1
	390	fi
	391
a822250c MJ	392	tree "${LTTBUILDKHDRDIR}"
a822250c MJ	393	if [ "x$(find "${LTTBUILDKHDRDIR}" -name '.ko' -printf yes -quit)" != "xyes" ]; then
7e02032c MJ	394	echo "No modules built!"
	395	exit 1
	396	fi
b214d997	397
f3d8604b	398	# EOF