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

#!/bin/bash -exu
#
# Copyright (C) 2016-2019 - 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/>.

# Parameters
arch=${arch:-}
cross_arch=${cross_arch:-}
ktag=${ktag:-}
kgitrepo=${kgitrepo:-}
mversion=${mversion:-}
mgitrepo=${mgitrepo:-}


## 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"
}


git_clone_modules_sources() {
    mkdir -p "$MODULES_GIT_DIR"
    git clone --depth=1 -b "${mversion}" "${mgitrepo}" "$MODULES_GIT_DIR"
}

# Checkout a shallow kernel tree of the specified tag
git_clone_linux_sources() {
    mkdir -p "$LINUX_GIT_DIR"
    git clone --depth=1 -b "${ktag}" --reference "$LINUX_GIT_REF_REPO_DIR" "${kgitrepo}" "$LINUX_GIT_DIR"
}


# Export the kernel sources from the git repo
git_export_linux_sources() {
    cd "$LINUX_GIT_DIR"
    git archive "${ktag}" | tar -x -C "$LINUX_SRCOBJ_DIR"
}


# Upload the tar archive to the object store
upload_archive_obj() {
    s3cmd -c "$WORKSPACE/.s3cfg" put "$WORKSPACE/$obj_name" "$obj_url_prefix/"
    rm -f "$WORKSPACE/$obj_name"
}


extract_archive_obj() {
    tar -xf "$WORKSPACE/$obj_name" -C "$LINUX_OBJ_DIR"
    rm -f "$WORKSPACE/$obj_name"
}


tar_archive_obj() {
    cd "$LINUX_OBJ_DIR"
    tar -cf "$WORKSPACE/$obj_name" -I pbzip2 .
    cd -
}

# Find the most recent GCC version supported by the kernel sources
select_compiler() {
    local selected_cc

    cd "$LINUX_SRCOBJ_DIR"

    kversion=$(make -s kernelversion)

    set +e

    for cc in gcc-5 gcc-4.8; do
      if "${CROSS_COMPILE:-}${cc}" -I include/ -D__LINUX_COMPILER_H -D__LINUX_COMPILER_TYPES_H -E include/linux/compiler-gcc.h; then
        selected_cc="$cc"
        break
      fi
    done

    set -e

    if [ "x$selected_cc" = "x" ]; then
      echo "Found no suitable compiler."
      exit 1
    fi

    # Force gcc-4.8 for kernels before 3.18
    if { verlt "$kversion" "3.18"; }; then
      selected_cc=gcc-4.8
    fi

    if [ "$selected_cc" != "gcc-4.8" ]; then
        # Older kernel Makefiles do not expect the compiler to default to PIE
        KAFLAGS="-fno-pie"
        KCFLAGS="-fno-pie -no-pie -fno-stack-protector"
        KCPPFLAGS="-fno-pie"
        export KAFLAGS KCFLAGS KCPPFLAGS
    fi

    export CC="${CROSS_COMPILE:-}${selected_cc}"
    export HOSTCC="${selected_cc}"

    cd -
}


build_linux_kernel() {
    cd "$LINUX_SRCOBJ_DIR"

    kversion=$(make -s kernelversion)

    # Generate kernel configuration
    case "$ktag" in
      Ubuntu*)
        if [ "${cross_arch}" = "powerpc" ]; then
          if vergte "${kversion}" "4.10"; then
            echo "Ubuntu removed big endian powerpc configuration from kernel >= 4.10. Don't try to build it."
            exit 0
          fi
        fi
        fakeroot debian/rules clean KW_DEFCONFIG_DIR=.
        fakeroot debian/rules genconfigs KW_DEFCONFIG_DIR=.
        cp CONFIGS/"${ubuntu_config}" .config
        ;;

      *)
        # Force 32bit build on i386, default is 64bit
        if [ "$arch" = "i386" ]; then
            export ARCH="i386"
        fi

        # allyesconfig is mostly broken for kernels of the 2.6 series
        if verlt "$kversion" "3.0"; then
            vanilla_config="defconfig"
        fi

        make "${vanilla_config}"
        ;;
    esac

    # silentoldconfig was renamed in 4.19
    if vergte "$kversion" "4.19"; then
        update_conf_target="syncconfig"
    else
        update_conf_target="silentoldconfig"
    fi

    # Fix 'defined(@array)' was removed from recent perl
    if [ -f "kernel/timeconst.pl" ]; then
      sed -i 's/defined(\@\(.*\))/@\1/' kernel/timeconst.pl
    fi

    # Fix syntax of inline assembly which is confused with C++11 raw strings on gcc >= 5
    if [ "$CC" != "gcc-4.8" ]; then
      if [ -f "arch/x86/kvm/svm.c" ]; then
        sed -i 's/ R"/ R "/g; s/"R"/" R "/g' arch/x86/kvm/svm.c
      fi

      if [ -f "arch/x86/kvm/vmx.c" ]; then
        sed -i 's/ R"/ R "/g; s/"R"/" R "/g' arch/x86/kvm/vmx.c
      fi
    fi

    # Fix a typo in v2.6.36.x
    if [ -f "arch/x86/kernel/entry_64.S" ]; then
      sed -i 's/END(do_hypervisor_callback)/END(xen_do_hypervisor_callback)/' arch/x86/kernel/entry_64.S
    fi

    # Fix kernel < 3.0 with gcc >= 4.7
    if verlt "$kversion" "3.0"; then
      sed -i '/linux\/compiler.h/a #include <linux\/linkage.h> \/* For asmregparm *\/' arch/x86/include/asm/ptrace.h
      sed -i 's/extern long syscall_trace_enter/extern asmregparm long syscall_trace_enter/' arch/x86/include/asm/ptrace.h
      sed -i 's/extern void syscall_trace_leave/extern asmregparm void syscall_trace_leave/' arch/x86/include/asm/ptrace.h
      echo "header-y += linkage.h" >> include/linux/Kbuild
    fi

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

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

    # Cause problems with inline assembly on i386
    sed -i "s/CONFIG_DEBUG_SECTION_MISMATCH=y/# CONFIG_DEBUG_SECTION_MISMATCH is not set/g" .config

    # Don't build samples, they are broken on some kernel releases
    sed -i "s/CONFIG_SAMPLES=y/# CONFIG_SAMPLES is not set/g" .config
    sed -i "s/CONFIG_BUILD_DOCSRC=y/# CONFIG_BUILD_DOCSRC is not set/g" .config

    # Disable kcov
    sed -i "s/CONFIG_KCOV=y/# CONFIG_KCOV is not set/g" .config

    # Broken on some RT kernels
    sed -i "s/CONFIG_HYPERV=y/# CONFIG_HYPERV is not set/g" .config

    # Broken drivers
    sed -i "s/CONFIG_RAPIDIO_TSI721=y/# CONFIG_RAPIDIO_TSI721 is not set/g" .config
    sed -i "s/CONFIG_SGI_XP=y/# CONFIG_SGI_XP is not set/g" .config
    sed -i "s/CONFIG_MFD_WM8994=y/# CONFIG_MFD_WM8994 is not set/g" .config
    sed -i "s/CONFIG_DRM_RADEON=y/# CONFIG_DRM_RADEON is not set/g" .config
    sed -i "s/CONFIG_SND_SOC_WM5100=y/# CONFIG_SND_SOC_WM5100 is not set/g" .config

    # IGBVF won't build with recent gcc on 2.6.38.x
    if { vergte "$kversion" "2.6.37" && verlt "$kversion" "2.6.38"; }; then
      sed -i "s/CONFIG_IGBVF=y/# CONFIG_IGBVF is not set/g" .config
    fi

    # Set required options
    sed -i 's/# CONFIG_KPROBES is not set/CONFIG_KPROBES=y/g' .config
    sed -i 's/# CONFIG_FTRACE is not set/CONFIG_FTRACE=y/g' .config
    sed -i 's/# CONFIG_BLK_DEV_IO_TRACE is not set/CONFIG_BLK_DEV_IO_TRACE=y/g' .config
    sed -i 's/# CONFIG_KALLSYMS_ALL is not set/CONFIG_KALLSYMS_ALL=y/g' .config

    # Debug
    #cat .config

    make "$update_conf_target" CC="$CC"
    make -j"$NPROC" CC="$CC"

    krelease=$(make -s kernelrelease CC="$CC")

    # Save the kernel and modules
    mkdir -p "$LINUX_INSTOBJ_DIR/boot"
    make INSTALL_MOD_PATH="$LINUX_INSTOBJ_DIR" INSTALL_MOD_STRIP=1 modules_install
    make INSTALL_PATH="$LINUX_INSTOBJ_DIR/boot" install
    rm -f "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source" "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/build"
    ln -s ../../../../sources "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source"
    ln -s ../../../../sources "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source"
}


extract_distro_headers() {

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


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

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

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

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

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

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

    # On arm64 between 4.13 and 1.15 this object is required to build with ftrace support
    if [ "${karch}" = "arm64" ]; then
        if [ -f "arch/arm64/kernel/ftrace-mod.S" ]; then
            cp -a --parents arch/arm64/kernel/ftrace-mod.[So] "${LINUX_HDROBJ_DIR}/"
        fi
    fi

    # Newer kernels need objtool to build modules when CONFIG_STACK_VALIDATION=y
    if [ -f tools/objtool/objtool ]; then
      cp -a --parents tools/objtool/objtool "${LINUX_HDROBJ_DIR}/"
    fi

    if [ -f "arch/x86/kernel/macros.s" ]; then
      cp -a --parents arch/x86/kernel/macros.s "${LINUX_HDROBJ_DIR}/"
    fi

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

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

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

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

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

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

    # Finally clean the object files from the full source tree
    make clean

    # And regen the modules support files
    make modules_prepare CC="$CC"

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

    # On arm64 between 4.13 and 4.15 this object is required to build with ftrace support
    if [ "${karch}" = "arm64" ]; then
        if [ -f "arch/arm64/kernel/ftrace-mod.S" ]; then
            make arch/arm64/kernel/ftrace-mod.o CC="$CC"
        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" >> include/generated/utsrelease.h
        echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> "${LINUX_HDROBJ_DIR}/include/generated/utsrelease.h"
        ;;
    esac
}


build_modules() {

    local kdir="$1"
    local outdir="$2"
    local kversion

    kversion=$(make -C "$LINUX_HDROBJ_DIR" -s kernelversion)

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

    # 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="$CC"
	ret=$?

        set -e

        # We expect this build to fail, if it doesn't, fail the job.
        if [ "$ret" -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." > "${outdir}/BROKEN.txt.ko"

        KERNELDIR="${kdir}" make clean

    else # Regular build

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

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

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


## MAIN ##

# Use all CPU cores
NPROC=$(nproc)

MODULES_GIT_DIR="${WORKSPACE}/src/lttng-modules"
LINUX_GIT_DIR="${WORKSPACE}/src/linux"

LINUX_OBJ_DIR="${WORKSPACE}/linux"
LINUX_SRCOBJ_DIR="${LINUX_OBJ_DIR}/sources"
LINUX_HDROBJ_DIR="${LINUX_OBJ_DIR}/headers"
LINUX_INSTOBJ_DIR="${LINUX_OBJ_DIR}/install"

MODULES_OUTPUT_KSRC_DIR="${WORKSPACE}/build/lttng-modules-ksrc"
MODULES_OUTPUT_KHDR_DIR="${WORKSPACE}/build/lttng-modules-khdr"

LINUX_GIT_REF_REPO_DIR="$HOME/gitcache/linux-stable.git/"

OBJ_STORE_URL="s3://jenkins"

cd "$WORKSPACE"

# Create build directories
mkdir -p "${LINUX_SRCOBJ_DIR}" "${LINUX_HDROBJ_DIR}" "${LINUX_INSTOBJ_DIR}" "${MODULES_OUTPUT_KSRC_DIR}" "${MODULES_OUTPUT_KHDR_DIR}"

git_clone_modules_sources

# 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

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

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

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

        "amd64")
            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
else
    echo "Not arch or cross_arch specified"
    exit 1
fi


# First get the kernel build from the object store, or build it, if it's
# not available.

echo "# Setup endpoint
host_base = obj.internal.efficios.com
host_bucket = obj.internal.efficios.com
bucket_location = us-east-1
use_https = True

# Setup access keys
access_key = jenkins
secret_key = echo123456

# Enable S3 v4 signature APIs
signature_v2 = False" > "$WORKSPACE/.s3cfg"

url_hash="$(echo -n "$kgitrepo" | md5sum | awk '{ print $1 }')"
obj_name="linux.tar.bz2"
obj_url_prefix="$OBJ_STORE_URL/linux-build/$url_hash/$ktag/$arch/${cross_arch:-native}"
obj_url="$obj_url_prefix/$obj_name"

set +e
s3cmd -c "$WORKSPACE/.s3cfg" get "$obj_url"
ret=$?
set -e

case "$ret" in
    "0")
      extract_archive_obj
      ;;

    "12")
      echo "File not found"

      # Build all the things and upload
      # then finish the module build...

      git_clone_linux_sources
      git_export_linux_sources

      select_compiler

      ## PREPARE FULL LINUX SOURCE TREE
      build_linux_kernel

      ## EXTRACT DISTRO STYLE KERNEL HEADERS / DEVEL
      extract_distro_headers

      tar_archive_obj

      upload_archive_obj

      ;;

    *)
      echo "Unknown error? Abort"
      exit 1
      ;;
esac

select_compiler

## BUILD modules
# Either we downloaded a pre-build kernel or we built it and uploaded
# the archive for future builds.

cd "$WORKSPACE"

# Build modules against full kernel sources
build_modules "${LINUX_SRCOBJ_DIR}" "${MODULES_OUTPUT_KSRC_DIR}"

# Build modules against kernel headers
build_modules "${LINUX_HDROBJ_DIR}" "${MODULES_OUTPUT_KHDR_DIR}"

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

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

# EOF
Commit	Line	Data
5a196804	1	#!/bin/bash -exu
f3d8604b	2	#
1d5a0a3c	3	# Copyright (C) 2016-2019 - Michael Jeanson <mjeanson@efficios.com>
f3d8604b MJ	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
39961776 MJ	18	# Parameters
	19	arch=${arch:-}
	20	cross_arch=${cross_arch:-}
	21	ktag=${ktag:-}
5a196804 MJ	22	kgitrepo=${kgitrepo:-}
	23	mversion=${mversion:-}
	24	mgitrepo=${mgitrepo:-}
39961776 MJ	25
39961776 MJ	26
339db64d MJ	27	## FUNCTIONS ##
339db64d MJ	28
f3d8604b MJ	29	# Kernel version compare functions
f3d8604b MJ	30	verlte() {
51fa2ab3	31	[ "$1" = "$(printf '%s\n%s' "$1" "$2" \| sort -V \| head -n1)" ]
f3d8604b MJ	32	}
	33
	34	verlt() {
51fa2ab3	35	[ "$1" = "$2" ] && return 1 \|\| verlte "$1" "$2"
f3d8604b MJ	36	}
	37
	38	vergte() {
51fa2ab3	39	[ "$1" = "$(printf '%s\n%s' "$1" "$2" \| sort -V \| tail -n1)" ]
f3d8604b MJ	40	}
	41
	42	vergt() {
51fa2ab3	43	[ "$1" = "$2" ] && return 1 \|\| vergte "$1" "$2"
f3d8604b MJ	44	}
f3d8604b MJ	45
339db64d	46
5a196804 MJ	47	git_clone_modules_sources() {
	48	mkdir -p "$MODULES_GIT_DIR"
	49	git clone --depth=1 -b "${mversion}" "${mgitrepo}" "$MODULES_GIT_DIR"
	50	}
	51
	52	# Checkout a shallow kernel tree of the specified tag
	53	git_clone_linux_sources() {
	54	mkdir -p "$LINUX_GIT_DIR"
	55	git clone --depth=1 -b "${ktag}" --reference "$LINUX_GIT_REF_REPO_DIR" "${kgitrepo}" "$LINUX_GIT_DIR"
	56	}
7e02032c	57
7e02032c	58
5a196804 MJ	59	# Export the kernel sources from the git repo
	60	git_export_linux_sources() {
	61	cd "$LINUX_GIT_DIR"
	62	git archive "${ktag}" \| tar -x -C "$LINUX_SRCOBJ_DIR"
	63	}
	64
	65
	66	# Upload the tar archive to the object store
	67	upload_archive_obj() {
	68	s3cmd -c "$WORKSPACE/.s3cfg" put "$WORKSPACE/$obj_name" "$obj_url_prefix/"
	69	rm -f "$WORKSPACE/$obj_name"
	70	}
	71
	72
	73	extract_archive_obj() {
	74	tar -xf "$WORKSPACE/$obj_name" -C "$LINUX_OBJ_DIR"
	75	rm -f "$WORKSPACE/$obj_name"
	76	}
	77
	78
	79	tar_archive_obj() {
	80	cd "$LINUX_OBJ_DIR"
	81	tar -cf "$WORKSPACE/$obj_name" -I pbzip2 .
	82	cd -
	83	}
	84
	85	# Find the most recent GCC version supported by the kernel sources
	86	select_compiler() {
	87	local selected_cc
	88
	89	cd "$LINUX_SRCOBJ_DIR"
	90
	91	kversion=$(make -s kernelversion)
	92
	93	set +e
	94
1d5a0a3c	95	for cc in gcc-5 gcc-4.8; do
5a196804 MJ	96	if "${CROSS_COMPILE:-}${cc}" -I include/ -D__LINUX_COMPILER_H -D__LINUX_COMPILER_TYPES_H -E include/linux/compiler-gcc.h; then
	97	selected_cc="$cc"
	98	break
	99	fi
	100	done
	101
	102	set -e
	103
	104	if [ "x$selected_cc" = "x" ]; then
	105	echo "Found no suitable compiler."
	106	exit 1
	107	fi
	108
1d5a0a3c MJ	109	# Force gcc-4.8 for kernels before 3.18
1d5a0a3c MJ	110	if { verlt "$kversion" "3.18"; }; then
23db2292	111	selected_cc=gcc-4.8
7e02032c MJ	112	fi
7e02032c MJ	113
425e4992 MJ	114	if [ "$selected_cc" != "gcc-4.8" ]; then
	115	# Older kernel Makefiles do not expect the compiler to default to PIE
	116	KAFLAGS="-fno-pie"
c45b04df	117	KCFLAGS="-fno-pie -no-pie -fno-stack-protector"
425e4992 MJ	118	KCPPFLAGS="-fno-pie"
	119	export KAFLAGS KCFLAGS KCPPFLAGS
	120	fi
	121
5a196804	122	export CC="${CROSS_COMPILE:-}${selected_cc}"
1d5a0a3c	123	export HOSTCC="${selected_cc}"
5a196804 MJ	124
	125	cd -
	126	}
	127
	128
	129	build_linux_kernel() {
	130	cd "$LINUX_SRCOBJ_DIR"
	131
	132	kversion=$(make -s kernelversion)
	133
7e02032c	134	# Generate kernel configuration
a1ae361e	135	case "$ktag" in
7e02032c	136	Ubuntu*)
39961776	137	if [ "${cross_arch}" = "powerpc" ]; then
5a196804	138	if vergte "${kversion}" "4.10"; then
39961776 MJ	139	echo "Ubuntu removed big endian powerpc configuration from kernel >= 4.10. Don't try to build it."
	140	exit 0
	141	fi
	142	fi
a46abb0a MJ	143	fakeroot debian/rules clean KW_DEFCONFIG_DIR=.
a46abb0a MJ	144	fakeroot debian/rules genconfigs KW_DEFCONFIG_DIR=.
5a196804	145	cp CONFIGS/"${ubuntu_config}" .config
7e02032c	146	;;
c45b04df	147
7e02032c	148	*)
16844a6d MJ	149	# Force 32bit build on i386, default is 64bit
16844a6d MJ	150	if [ "$arch" = "i386" ]; then
5a196804 MJ	151	export ARCH="i386"
	152	fi
	153
	154	# allyesconfig is mostly broken for kernels of the 2.6 series
	155	if verlt "$kversion" "3.0"; then
	156	vanilla_config="defconfig"
7a76a4d0 MJ	157	fi
7a76a4d0 MJ	158
5a196804	159	make "${vanilla_config}"
7e02032c MJ	160	;;
	161	esac
	162
5a196804 MJ	163	# silentoldconfig was renamed in 4.19
	164	if vergte "$kversion" "4.19"; then
	165	update_conf_target="syncconfig"
	166	else
	167	update_conf_target="silentoldconfig"
	168	fi
	169
	170	# Fix 'defined(@array)' was removed from recent perl
	171	if [ -f "kernel/timeconst.pl" ]; then
	172	sed -i 's/defined(\@\(.*\))/@\1/' kernel/timeconst.pl
	173	fi
	174
	175	# Fix syntax of inline assembly which is confused with C++11 raw strings on gcc >= 5
23db2292	176	if [ "$CC" != "gcc-4.8" ]; then
5a196804 MJ	177	if [ -f "arch/x86/kvm/svm.c" ]; then
	178	sed -i 's/ R"/ R "/g; s/"R"/" R "/g' arch/x86/kvm/svm.c
	179	fi
	180
	181	if [ -f "arch/x86/kvm/vmx.c" ]; then
	182	sed -i 's/ R"/ R "/g; s/"R"/" R "/g' arch/x86/kvm/vmx.c
	183	fi
	184	fi
	185
	186	# Fix a typo in v2.6.36.x
	187	if [ -f "arch/x86/kernel/entry_64.S" ]; then
	188	sed -i 's/END(do_hypervisor_callback)/END(xen_do_hypervisor_callback)/' arch/x86/kernel/entry_64.S
	189	fi
	190
	191	# Fix kernel < 3.0 with gcc >= 4.7
	192	if verlt "$kversion" "3.0"; then
	193	sed -i '/linux\/compiler.h/a #include <linux\/linkage.h> \/* For asmregparm *\/' arch/x86/include/asm/ptrace.h
	194	sed -i 's/extern long syscall_trace_enter/extern asmregparm long syscall_trace_enter/' arch/x86/include/asm/ptrace.h
	195	sed -i 's/extern void syscall_trace_leave/extern asmregparm void syscall_trace_leave/' arch/x86/include/asm/ptrace.h
	196	echo "header-y += linkage.h" >> include/linux/Kbuild
	197	fi
	198
7e02032c	199	# GCC 4.8
5a196804	200	sed -i "s/CONFIG_CC_STACKPROTECTOR_STRONG=y/# CONFIG_CC_STACKPROTECTOR_STRONG is not set/g" .config
7e02032c MJ	201
7e02032c MJ	202	# Don't try to sign modules
5a196804	203	sed -i "s/CONFIG_MODULE_SIG=y/# CONFIG_MODULE_SIG is not set/g" .config
7e02032c	204
9ef18fa2	205	# Disable kernel stack frame correctness validation, introduced in 4.6.0 and currently fails
5a196804 MJ	206	sed -i "s/CONFIG_STACK_VALIDATION=y/# CONFIG_STACK_VALIDATION is not set/g" .config
	207
	208	# Cause problems with inline assembly on i386
	209	sed -i "s/CONFIG_DEBUG_SECTION_MISMATCH=y/# CONFIG_DEBUG_SECTION_MISMATCH is not set/g" .config
	210
1d5a0a3c MJ	211	# Don't build samples, they are broken on some kernel releases
1d5a0a3c MJ	212	sed -i "s/CONFIG_SAMPLES=y/# CONFIG_SAMPLES is not set/g" .config
c45b04df MJ	213	sed -i "s/CONFIG_BUILD_DOCSRC=y/# CONFIG_BUILD_DOCSRC is not set/g" .config
	214
	215	# Disable kcov
	216	sed -i "s/CONFIG_KCOV=y/# CONFIG_KCOV is not set/g" .config
	217
	218	# Broken on some RT kernels
	219	sed -i "s/CONFIG_HYPERV=y/# CONFIG_HYPERV is not set/g" .config
1d5a0a3c	220
1e300ea9 MJ	221	# Broken drivers
	222	sed -i "s/CONFIG_RAPIDIO_TSI721=y/# CONFIG_RAPIDIO_TSI721 is not set/g" .config
	223	sed -i "s/CONFIG_SGI_XP=y/# CONFIG_SGI_XP is not set/g" .config
	224	sed -i "s/CONFIG_MFD_WM8994=y/# CONFIG_MFD_WM8994 is not set/g" .config
	225	sed -i "s/CONFIG_DRM_RADEON=y/# CONFIG_DRM_RADEON is not set/g" .config
	226	sed -i "s/CONFIG_SND_SOC_WM5100=y/# CONFIG_SND_SOC_WM5100 is not set/g" .config
	227
5a196804 MJ	228	# IGBVF won't build with recent gcc on 2.6.38.x
	229	if { vergte "$kversion" "2.6.37" && verlt "$kversion" "2.6.38"; }; then
	230	sed -i "s/CONFIG_IGBVF=y/# CONFIG_IGBVF is not set/g" .config
	231	fi
9ef18fa2	232
51fa2ab3	233	# Set required options
c45b04df MJ	234	sed -i 's/# CONFIG_KPROBES is not set/CONFIG_KPROBES=y/g' .config
	235	sed -i 's/# CONFIG_FTRACE is not set/CONFIG_FTRACE=y/g' .config
	236	sed -i 's/# CONFIG_BLK_DEV_IO_TRACE is not set/CONFIG_BLK_DEV_IO_TRACE=y/g' .config
	237	sed -i 's/# CONFIG_KALLSYMS_ALL is not set/CONFIG_KALLSYMS_ALL=y/g' .config
7e02032c	238
7a76a4d0	239	# Debug
5a196804 MJ	240	#cat .config
	241
	242	make "$update_conf_target" CC="$CC"
	243	make -j"$NPROC" CC="$CC"
	244
c45b04df	245	krelease=$(make -s kernelrelease CC="$CC")
5a196804 MJ	246
	247	# Save the kernel and modules
	248	mkdir -p "$LINUX_INSTOBJ_DIR/boot"
	249	make INSTALL_MOD_PATH="$LINUX_INSTOBJ_DIR" INSTALL_MOD_STRIP=1 modules_install
	250	make INSTALL_PATH="$LINUX_INSTOBJ_DIR/boot" install
	251	rm -f "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source" "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/build"
	252	ln -s ../../../../sources "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source"
	253	ln -s ../../../../sources "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source"
	254	}
	255
	256
	257	extract_distro_headers() {
	258
	259	# Enter linux source dir
	260	cd "${LINUX_SRCOBJ_DIR}"
	261
	262
	263	# For RT kernels, copy version file
	264	if [ -s localversion-rt ]; then
	265	cp -a localversion-rt "${LINUX_HDROBJ_DIR}"
	266	fi
	267
	268	# Copy all Makefile related stuff
	269	find . -path './include/*' -prune \
	270	-o -path './scripts/*' -prune -o -type f \
	271	\( -name 'Makefile' -o -name 'Kconfig' -o -name 'Kbuild*' -o \
	272	-name '.sh' -o -name '.pl' -o -name '*.lds' \) \
	273	-print \| cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
	274
	275	# Copy base scripts and include dirs
	276	cp -a scripts include "${LINUX_HDROBJ_DIR}"
7e02032c	277
5a196804 MJ	278	# Copy arch includes
	279	(find arch -name include -type d -print0 \| \
	280	xargs -0 -n1 -i: find : -type f) \| \
	281	cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
	282
	283	# Copy arch scripts
	284	(find arch -name scripts -type d -print0 \| \
	285	xargs -0 -n1 -i: find : -type f) \| \
	286	cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
	287
	288	# Cleanup scripts
	289	rm -f "${LINUX_HDROBJ_DIR}/scripts/*.o"
	290	rm -f "${LINUX_HDROBJ_DIR}/scripts//.o"
	291
	292	# On powerpc this object is required to link modules
	293	if [ "${karch}" = "powerpc" ]; then
	294	cp -a --parents arch/powerpc/lib/crtsavres.[So] "${LINUX_HDROBJ_DIR}/"
	295	fi
	296
	297	# On arm64 between 4.13 and 1.15 this object is required to build with ftrace support
	298	if [ "${karch}" = "arm64" ]; then
	299	if [ -f "arch/arm64/kernel/ftrace-mod.S" ]; then
	300	cp -a --parents arch/arm64/kernel/ftrace-mod.[So] "${LINUX_HDROBJ_DIR}/"
	301	fi
	302	fi
	303
	304	# Newer kernels need objtool to build modules when CONFIG_STACK_VALIDATION=y
	305	if [ -f tools/objtool/objtool ]; then
	306	cp -a --parents tools/objtool/objtool "${LINUX_HDROBJ_DIR}/"
	307	fi
	308
	309	if [ -f "arch/x86/kernel/macros.s" ]; then
	310	cp -a --parents arch/x86/kernel/macros.s "${LINUX_HDROBJ_DIR}/"
	311	fi
	312
	313	# Copy modules related stuff, if available
	314	if [ -s Module.symvers ]; then
	315	cp Module.symvers "${LINUX_HDROBJ_DIR}"
	316	fi
	317
	318	if [ -s System.map ]; then
	319	cp System.map "${LINUX_HDROBJ_DIR}"
	320	fi
	321
	322	if [ -s Module.markers ]; then
	323	cp Module.markers "${LINUX_HDROBJ_DIR}"
	324	fi
	325
	326	# Copy config file
	327	cp .config "${LINUX_HDROBJ_DIR}"
	328
	329	# Make sure the Makefile and version.h have a matching timestamp so that
	330	# external modules can be built
	331	if [ -s "${LINUX_HDROBJ_DIR}/include/generated/uapi/linux/version.h" ]; then
	332	touch -r "${LINUX_HDROBJ_DIR}/Makefile" "${LINUX_HDROBJ_DIR}/include/generated/uapi/linux/version.h"
	333	elif [ -s "${LINUX_HDROBJ_DIR}/include/linux/version.h" ]; then
	334	touch -r "${LINUX_HDROBJ_DIR}/Makefile" "${LINUX_HDROBJ_DIR}/include/linux/version.h"
	335	else
	336	echo "Missing version.h"
	337	exit 1
	338	fi
	339	touch -r "${LINUX_HDROBJ_DIR}/.config" "${LINUX_HDROBJ_DIR}/include/generated/autoconf.h"
	340
	341	# Copy .config to include/config/auto.conf so "make prepare" is unnecessary.
342	cp "${LINUX_HDROBJ_DIR}/.config" "${LINUX_HDROBJ_DIR}/include/config/auto.conf"
343
344	# Finally clean the object files from the full source tree
345	make clean
346
347	# And regen the modules support files
348	make modules_prepare CC="$CC"
51fa2ab3	349
d815b018 MJ	350	# On powerpc this object is required to link modules
d815b018 MJ	351	if [ "${karch}" = "powerpc" ]; then
5a196804	352	make arch/powerpc/lib/crtsavres.o CC="$CC"
d815b018 MJ	353	fi
d815b018 MJ	354
7a76a4d0	355	# On arm64 between 4.13 and 4.15 this object is required to build with ftrace support
a1ae361e	356	if [ "${karch}" = "arm64" ]; then
c236528e	357	if [ -f "arch/arm64/kernel/ftrace-mod.S" ]; then
5a196804	358	make arch/arm64/kernel/ftrace-mod.o CC="$CC"
a1ae361e MJ	359	fi
	360	fi
	361
7e02032c	362	# Version specific tasks
a1ae361e	363	case "$ktag" in
7e02032c MJ	364	Ubuntu*)
7e02032c MJ	365	# Add Ubuntu ABI number to kernel headers, this is normally done by the packaging code
a1ae361e	366	ABINUM="$(echo "$ktag" \| grep -P -o 'Ubuntu-(lts-)?.-\K\d+(?=\..)')"
5a196804 MJ	367	echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> include/generated/utsrelease.h
5a196804 MJ	368	echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> "${LINUX_HDROBJ_DIR}/include/generated/utsrelease.h"
7e02032c MJ	369	;;
7e02032c MJ	370	esac
7e02032c MJ	371	}
	372
	373
339db64d MJ	374	build_modules() {
339db64d MJ	375
5a196804 MJ	376	local kdir="$1"
	377	local outdir="$2"
	378	local kversion
	379
	380	kversion=$(make -C "$LINUX_HDROBJ_DIR" -s kernelversion)
339db64d	381
339db64d	382	# Enter lttng-modules source dir
5a196804	383	cd "${MODULES_GIT_DIR}"
339db64d MJ	384
	385	# kernels 3.10 to 3.10.13 and 3.11 to 3.11.2 introduce a deadlock in the
	386	# timekeeping subsystem. We want those build to fail.
5a196804 MJ	387	if { vergte "$kversion" "3.10" && verlte "$kversion" "3.10.13"; } \|\| \
5a196804 MJ	388	{ vergte "$kversion" "3.11" && verlte "$kversion" "3.11.2"; }; then
339db64d MJ	389
	390	set +e
	391
	392	# Build modules
51fa2ab3	393	KERNELDIR="${kdir}" make -j"${NPROC}" V=1 CC="$CC"
0f71a764	394	ret=$?
339db64d	395
5a196804 MJ	396	set -e
5a196804 MJ	397
339db64d	398	# We expect this build to fail, if it doesn't, fail the job.
0f71a764	399	if [ "$ret" -eq 0 ]; then
e9b44189	400	echo "This build should have failed."
339db64d MJ	401	exit 1
	402	fi
	403
	404	# We have to publish at least one file or the build will fail
5a196804	405	echo "This kernel is broken, there is a deadlock in the timekeeping subsystem." > "${outdir}/BROKEN.txt.ko"
339db64d	406
5a196804	407	KERNELDIR="${kdir}" make clean
7e02032c	408
339db64d MJ	409	else # Regular build
	410
	411	# Build modules against full kernel sources
51fa2ab3	412	KERNELDIR="${kdir}" make -j"${NPROC}" V=1 CC="$CC"
339db64d MJ	413
339db64d MJ	414	# Install modules to build dir
5a196804	415	KERNELDIR="${kdir}" make INSTALL_MOD_PATH="${outdir}" modules_install
339db64d MJ	416
339db64d MJ	417	# Clean build dir
5a196804	418	KERNELDIR="${kdir}" make clean
339db64d MJ	419	fi
	420	}
	421
	422
	423	## MAIN ##
	424
f3d8604b MJ	425	# Use all CPU cores
	426	NPROC=$(nproc)
	427
5a196804 MJ	428	MODULES_GIT_DIR="${WORKSPACE}/src/lttng-modules"
5a196804 MJ	429	LINUX_GIT_DIR="${WORKSPACE}/src/linux"
339db64d	430
5a196804 MJ	431	LINUX_OBJ_DIR="${WORKSPACE}/linux"
	432	LINUX_SRCOBJ_DIR="${LINUX_OBJ_DIR}/sources"
	433	LINUX_HDROBJ_DIR="${LINUX_OBJ_DIR}/headers"
	434	LINUX_INSTOBJ_DIR="${LINUX_OBJ_DIR}/install"
339db64d	435
5a196804 MJ	436	MODULES_OUTPUT_KSRC_DIR="${WORKSPACE}/build/lttng-modules-ksrc"
5a196804 MJ	437	MODULES_OUTPUT_KHDR_DIR="${WORKSPACE}/build/lttng-modules-khdr"
339db64d	438
5a196804 MJ	439	LINUX_GIT_REF_REPO_DIR="$HOME/gitcache/linux-stable.git/"
	440
	441	OBJ_STORE_URL="s3://jenkins"
	442
	443	cd "$WORKSPACE"
	444
	445	# Create build directories
	446	mkdir -p "${LINUX_SRCOBJ_DIR}" "${LINUX_HDROBJ_DIR}" "${LINUX_INSTOBJ_DIR}" "${MODULES_OUTPUT_KSRC_DIR}" "${MODULES_OUTPUT_KHDR_DIR}"
	447
	448	git_clone_modules_sources
339db64d	449
7e02032c	450	# Setup cross compile env if available
39961776	451	if [ "x${cross_arch}" != "x" ]; then
7e02032c MJ	452
	453	case "$cross_arch" in
	454	"armhf")
	455	karch="arm"
	456	cross_compile="arm-linux-gnueabihf-"
e9b44189	457	vanilla_config="allyesconfig"
7e02032c MJ	458	ubuntu_config="armhf-config.flavour.generic"
	459	;;
	460
	461	"arm64")
	462	karch="arm64"
	463	cross_compile="aarch64-linux-gnu-"
e9b44189	464	vanilla_config="allyesconfig"
7e02032c MJ	465	ubuntu_config="arm64-config.flavour.generic"
	466	;;
	467
	468	"powerpc")
	469	karch="powerpc"
	470	cross_compile="powerpc-linux-gnu-"
e9b44189	471	vanilla_config="ppc44x_defconfig"
7e02032c MJ	472	ubuntu_config="powerpc-config.flavour.powerpc-smp"
	473	;;
	474
	475	"ppc64el")
	476	karch="powerpc"
	477	cross_compile="powerpc64le-linux-gnu-"
e9b44189	478	vanilla_config="pseries_le_defconfig"
7e02032c MJ	479	ubuntu_config="ppc64el-config.flavour.generic"
	480	;;
	481
	482	*)
51fa2ab3	483	echo "Unsupported cross arch $cross_arch"
7e02032c MJ	484	exit 1
	485	;;
	486	esac
339db64d	487
7e02032c MJ	488	# Export variables used by Kbuild for cross compilation
	489	export ARCH="${karch}"
	490	export CROSS_COMPILE="${cross_compile}"
339db64d	491
7e02032c	492	# Set arch specific values if we are not cross compiling
39961776	493	elif [ "x${arch}" != "x" ]; then
e9b44189	494
7e02032c	495	case "$arch" in
16844a6d	496	"i386")
7e02032c	497	karch="x86"
e9b44189	498	vanilla_config="allyesconfig"
7e02032c MJ	499	ubuntu_config="i386-config.flavour.generic"
	500	;;
	501
16844a6d	502	"amd64")
7e02032c	503	karch="x86"
e9b44189	504	vanilla_config="allyesconfig"
7e02032c MJ	505	ubuntu_config="amd64-config.flavour.generic"
	506	;;
	507
	508	"armhf")
	509	karch="arm"
e9b44189	510	vanilla_config="allyesconfig"
7e02032c MJ	511	ubuntu_config="armhf-config.flavour.generic"
	512	;;
	513
	514	"arm64")
	515	karch="arm64"
e9b44189	516	vanilla_config="allyesconfig"
7e02032c MJ	517	ubuntu_config="arm64-config.flavour.generic"
	518	;;
	519
	520	"powerpc")
	521	karch="powerpc"
e9b44189	522	vanilla_config="allyesconfig"
7e02032c MJ	523	ubuntu_config="powerpc-config.flavour.powerpc-smp"
	524	;;
	525
	526	"ppc64el")
	527	karch="powerpc"
e9b44189	528	vanilla_config="allyesconfig"
7e02032c MJ	529	ubuntu_config="ppc64el-config.flavour.generic"
	530	;;
	531
	532	*)
	533	echo "Unsupported arch $arch"
	534	exit 1
	535	;;
	536	esac
	537	else
	538	echo "Not arch or cross_arch specified"
	539	exit 1
	540	fi
339db64d	541
339db64d	542
b214d997	543
5a196804 MJ	544	# First get the kernel build from the object store, or build it, if it's
5a196804 MJ	545	# not available.
339db64d	546
5a196804 MJ	547	echo "# Setup endpoint
	548	host_base = obj.internal.efficios.com
	549	host_bucket = obj.internal.efficios.com
	550	bucket_location = us-east-1
	551	use_https = True
7e02032c	552
5a196804 MJ	553	# Setup access keys
	554	access_key = jenkins
	555	secret_key = echo123456
339db64d	556
5a196804 MJ	557	# Enable S3 v4 signature APIs
5a196804 MJ	558	signature_v2 = False" > "$WORKSPACE/.s3cfg"
339db64d	559
c45b04df	560	url_hash="$(echo -n "$kgitrepo" \| md5sum \| awk '{ print $1 }')"
5a196804	561	obj_name="linux.tar.bz2"
c45b04df	562	obj_url_prefix="$OBJ_STORE_URL/linux-build/$url_hash/$ktag/$arch/${cross_arch:-native}"
5a196804	563	obj_url="$obj_url_prefix/$obj_name"
339db64d	564
5a196804 MJ	565	set +e
	566	s3cmd -c "$WORKSPACE/.s3cfg" get "$obj_url"
	567	ret=$?
	568	set -e
339db64d	569
5a196804 MJ	570	case "$ret" in
	571	"0")
	572	extract_archive_obj
	573	;;
a1ae361e	574
5a196804 MJ	575	"12")
5a196804 MJ	576	echo "File not found"
339db64d	577
5a196804 MJ	578	# Build all the things and upload
5a196804 MJ	579	# then finish the module build...
339db64d	580
5a196804 MJ	581	git_clone_linux_sources
5a196804 MJ	582	git_export_linux_sources
339db64d	583
5a196804	584	select_compiler
a1ae361e	585
5a196804 MJ	586	## PREPARE FULL LINUX SOURCE TREE
5a196804 MJ	587	build_linux_kernel
d138fc44	588
5a196804 MJ	589	## EXTRACT DISTRO STYLE KERNEL HEADERS / DEVEL
5a196804 MJ	590	extract_distro_headers
339db64d	591
5a196804	592	tar_archive_obj
339db64d	593
5a196804	594	upload_archive_obj
339db64d	595
5a196804	596	;;
339db64d	597
5a196804 MJ	598	*)
	599	echo "Unknown error? Abort"
	600	exit 1
	601	;;
	602	esac
339db64d	603
5a196804	604	select_compiler
f3d8604b	605
7e02032c	606	## BUILD modules
5a196804 MJ	607	# Either we downloaded a pre-build kernel or we built it and uploaded
	608	# the archive for future builds.
	609
	610	cd "$WORKSPACE"
f3d8604b	611
339db64d	612	# Build modules against full kernel sources
5a196804	613	build_modules "${LINUX_SRCOBJ_DIR}" "${MODULES_OUTPUT_KSRC_DIR}"
f3d8604b	614
339db64d	615	# Build modules against kernel headers
5a196804	616	build_modules "${LINUX_HDROBJ_DIR}" "${MODULES_OUTPUT_KHDR_DIR}"
f3d8604b	617
5a196804 MJ	618	# Make sure some modules were actually built
	619	tree "${MODULES_OUTPUT_KSRC_DIR}"
	620	if [ "x$(find "${MODULES_OUTPUT_KSRC_DIR}" -name '.ko' -printf yes -quit)" != "xyes" ]; then
7e02032c MJ	621	echo "No modules built!"
	622	exit 1
	623	fi
	624
5a196804 MJ	625	tree "${MODULES_OUTPUT_KHDR_DIR}"
5a196804 MJ	626	if [ "x$(find "${MODULES_OUTPUT_KHDR_DIR}" -name '.ko' -printf yes -quit)" != "xyes" ]; then
7e02032c MJ	627	echo "No modules built!"
	628	exit 1
	629	fi
b214d997	630
f3d8604b	631	# EOF