-#!/bin/sh -exu
+#!/bin/bash
#
-# Copyright (C) 2016 - Michael Jeanson <mjeanson@efficios.com>
+# Copyright (C) 2016-2023 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
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
+set -exu
+
+# Parameters
+platform=${platforms:-}
+cross_arch=${cross_arch:-}
+ktag=${ktag:-}
+kgitrepo=${kgitrepo:-}
+mversion=${mversion:-}
+mgitrepo=${mgitrepo:-}
+make_args=()
+
+DEBUG=${DEBUG:-}
+
+# Derive arch from label if it isn't set
+if [ -z "${arch:-}" ] ; then
+ # Labels may be platform specific, eg. jammy-amd64, deb12-armhf
+ regex='[[:alnum:]]+-([[:alnum:]]+)'
+ if [[ "${platform}" =~ ${regex} ]] ; then
+ arch="${BASH_REMATCH[1]}"
+ else
+ arch="${platform:-}"
+ fi
+fi
+
+
## FUNCTIONS ##
# Kernel version compare functions
}
verlt() {
+ # shellcheck disable=SC2015
[ "$1" = "$2" ] && return 1 || verlte "$1" "$2"
}
}
vergt() {
+ # shellcheck disable=SC2015
[ "$1" = "$2" ] && return 1 || vergte "$1" "$2"
}
+print_header() {
+ set +x
+
+ local message=" $1 "
+ local message_len
+ local padding_len
+
+ message_len="${#message}"
+ padding_len=$(( (80 - (message_len)) / 2 ))
+
+ printf '\n'; printf -- '#%.0s' {1..80}; printf '\n'
+ printf -- '-%.0s' {1..80}; printf '\n'
+ printf -- '#%.0s' $(seq 1 $padding_len); printf '%s' "$message"; printf -- '#%.0s' $(seq 1 $padding_len); printf '\n'
+ printf -- '-%.0s' {1..80}; printf '\n'
+ printf -- '#%.0s' {1..80}; printf '\n\n'
-prepare_lnx_sources() {
+ set -x
+}
- outdir=$1
+git_clone_modules_sources() {
+ mkdir -p "$MODULES_GIT_DIR"
- if [ "$outdir" = "." ]; then
- koutput=""
+ # If the version starts with "refs/", checkout the specific git ref, otherwise treat it
+ # as a branch name.
+ if [ "${mversion:0:5}" = "refs/" ]; then
+ git clone --no-tags --depth=1 "${mgitrepo}" "$MODULES_GIT_DIR"
+ (cd "$MODULES_GIT_DIR" && git fetch origin "${mversion}" && git checkout FETCH_HEAD)
else
- koutput="O=\"${outdir}\""
+ git clone --no-tags --depth=1 -b "${mversion}" "${mgitrepo}" "$MODULES_GIT_DIR"
+ fi
+}
+
+# Checkout a shallow kernel tree of the specified tag
+git_clone_linux_sources() {
+ mkdir -p "$LINUX_GIT_DIR"
+ case "${distroversion:-}" in
+ el*)
+ git clone -b "${ktag}" "${kgitrepo}" src/linux-rpm
+
+ # Get the source files
+ pushd src/linux-rpm
+ "${WORKSPACE}/src/getsrc/getsrc/getsrc.sh"
+ tar -x -C "${LINUX_GIT_DIR}" --strip-components=1 -f SOURCES/linux-*.tar.xz
+ popd
+
+ # Pretend we're a repo like the default expects
+ pushd "${LINUX_GIT_DIR}"
+ git init .
+ git config user.name 'Jenkins'
+ git config user.email 'jenkins@efficios.com'
+ git add .
+ git commit -a -m 'Initial commit'
+ git tag "${ktag}"
+ echo "${LINUX_GIT_REF_REPO_DIR}" > .git/objects/info/alternates
+ popd
+ ;;
+
+ *)
+ git clone --depth=1 -b "${ktag}" --reference-if-able "$LINUX_GIT_REF_REPO_DIR" "${kgitrepo}" "$LINUX_GIT_DIR"
+ ;;
+ esac
+}
+
+
+# Export the kernel sources from the git repo
+git_export_linux_sources() {
+ cd "$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 "$LINUX_OBJ_DIR" -I pbzip2
+ rm -f "$WORKSPACE/$obj_name"
+}
+
+
+tar_archive_obj() {
+ cd "$LINUX_OBJ_DIR"
+ tar -cf "$WORKSPACE/$obj_name" -I pbzip2 .
+ cd -
+}
+
+# List all GCC versions present in the PATH
+list_gccs() {
+ local gccs
+ gccs=()
+ IFS=: read -r -a path_array <<< "$PATH"
+ while read -r gcc ; do
+ gccs+=("$gcc")
+ done < <(find "${path_array[@]}" -maxdepth 1 -regex '.*/gcc-[0-9\.]+$' -printf '%f\n' | sort -t- -k2 -V -r)
+ echo "${gccs[@]}"
+}
+
+# Find the most recent GCC version supported by the kernel sources
+select_compiler() {
+
+ # Enter linux source dir
+ cd "$LINUX_SRCOBJ_DIR"
+
+ # Get the kernel version using the host toolchain, some cross-compiled arch may be broken
+ kversion=$(unset ARCH; unset CROSS_COMPILE; make -s kernelversion)
+
+ if [ "${cross_arch}" = "riscv64" ] && verlt "${kversion}" "5.12"; then
+ echo "RISC-V support was upstreamed in kernel v4.19 but kprobes support was only added in v5.12. Don't try to build it."
+ exit 0
+ fi
+
+ if [ "${cross_arch}" = "arm64" ] && verlt "${kversion}" "3.7"; then
+ echo "ARM64 support was added as of v3.7. Don't try to build it."
+ exit 0
+ fi
+
+ if [ "${cross_arch}" = "arm64" ] && verlt "${kversion}" "3.18"; then
+ echo "lttng-modules requires gcc >= 5.1 for ARM64 due to compiler bugs in gcc."
+ echo "gcc-5 support was added to the kernel as of v3.18. Don't this to build it."
+ exit 0
+ fi
+
+ if { verlt "$kversion" "4.4"; }; then
+ # Force gcc-4.8 for kernels before 4.4
+ selected_cc='gcc-4.8'
+ # Due to compiler bugs in gcc on arm64, lttng-modules disallows
+ # compilation with gcc < 5.1.
+ if [[ "${cross_arch}" == "arm64" ]] ; then
+ selected_cc='gcc-5.5'
+ export PATH="${PATH:-}:/usr/local/gcc5.5/bin"
+ export LD_LIBRARY_PATH="${LD_LIBRARY_PATH:-}:/usr/local/gcc5.5/lib"
+ fi
+ selected_cc_version=$(echo "${selected_cc}" | cut -d'-' -f2)
+ else
+ for cc in $(list_gccs) ; do
+ if "${CROSS_COMPILE:-}${cc}" -I include/ -D__LINUX_COMPILER_H -D__LINUX_COMPILER_TYPES_H -E include/linux/compiler-gcc.h; then
+ cc_version=$(echo "${cc}" | cut -d'-' -f2)
+ if { verlt "${kversion}" "5.17"; } && { vergt "${cc_version}" "11"; } ; then
+ # Using gcc-12+ with '-Wuse-after-free' breaks the build of older
+ # kernels (in particular, objtool). Some releases on LTS
+ # branches between 4.x and 5.15 can be built with gcc-12.
+ # @see https://lore.kernel.org/lkml/20494.1643237814@turing-police/
+ # @see https://gitlab.com/linux-kernel/stable/-/commit/52a9dab6d892763b2a8334a568bd4e2c1a6fde66
+ continue
+ fi
+ selected_cc="$cc"
+ selected_cc_version="$cc_version"
+ break
+ fi
+ done
+ fi
+
+ if [ -z "$selected_cc" ]; then
+ echo "Found no suitable compiler."
+ exit 1
+ fi
+
+ # lttng-modules requires gcc >= 5.1 for aarch64
+ # @see https://github.com/lttng/lttng-modules/commit/be06402dbdbea2f3394e60ec15c5d3356e2be416
+ if { verlt "${selected_cc_version}" "5.1"; } && [ "${cross_arch}" = "arm64" ] ; then
+ echo "Building lttng-modules on aarch64 requires gcc >= 5.1"
+ exit 1
+ fi
+
+ cd -
+}
+
+export_kbuild_flags() {
+ local _KAFLAGS
+ local _KCFLAGS
+ local _KCPPFLAGS
+ local _HOSTCFLAGS
+
+ _KAFLAGS=()
+ _KCFLAGS=()
+ _KCPPFLAGS=()
+ _HOSTCFLAGS=()
+
+ if { vergte "$selected_cc_version" "6"; }; then
+ # Older kernel Makefiles do not expect the compiler to default to PIE
+ _KAFLAGS+=(-fno-pie)
+ _KCFLAGS+=(
+ -fno-pie
+ -no-pie
+ -fno-stack-protector
+ )
+ _KCPPFLAGS+=(-fno-pie)
+ fi
+
+ if { vergte "${selected_cc_version}" "10"; } && { verlt "${kversion}" "5.10"; } ; then
+ # gcc-10 changed the default from '-fcommon' to '-fno-common', which
+ # causes a linker failure. '-fcommon' can be set on the HOSTCFLAGS
+ # to avoid the issue.
+ # @see https://gitlab.com/linux-kernel/stable/-/commit/e33a814e772cdc36436c8c188d8c42d019fda639
+ _HOSTCFLAGS+=(-fcommon)
+ fi
+
+ if { verlt "${kversion}" "5.14"; } && [ "${cross_arch:-}" == "armhf" ] ; then
+ # Work-around for producing instructions that aren't valid for the
+ # default architectures.
+ # Eg. Error: selected processor does not support `cpsid i' in ARM mode
+ _KCFLAGS+=(-march=armv7-a -mfpu=vfpv3-d16)
+ _KCPPFLAGS+=(-march=armv7-a -mfpu=vfpv3-d16)
+ fi
+
+ if { vergt "${selected_cc_version}" "8"; } && { vergte "${kversion}" "4.15"; } && { verlt "${kversion}" "4.17"; } ; then
+ # This was added to -Wall in gcc 9 but some kernels do not include the fixes
+ # @see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88583
+ _KCFLAGS+=(-Wno-error=packed-not-aligned)
+ fi
+
+ export KAFLAGS="${_KAFLAGS[*]}"
+ export KCFLAGS="${_KCFLAGS[*]}"
+ export KCPPFLAGS="${_KCPPFLAGS[*]}"
+ export HOSTCFLAGS="${_HOSTCFLAGS[*]}"
+ export CC="${CROSS_COMPILE:-}${selected_cc}"
+ export HOSTCC="${selected_cc}"
+
+ make_args=(
+ CC="${CC}"
+ HOSTCC="${HOSTCC}"
+ HOSTCFLAGS="${HOSTCFLAGS:-}"
+ )
+
+ if [ -n "${DEBUG}" ] ; then
+ make_args+=(
+ V=1
+ )
+ fi
+}
+
+patch_linux_kernel() {
+ local commit_hash
+ commit_hash="$1"
+
+ # Show the title of the patch in the build log
+ git -C "${LINUX_GIT_REF_REPO_DIR}" show --oneline -s "${commit_hash}"
+
+ # Apply patch, don't fail if it doesn't apply cleanly
+ set +e
+ git -C "${LINUX_GIT_REF_REPO_DIR}" format-patch -n1 --stdout "${commit_hash}" | patch -p1
+ set -e
+
+ if [ "$?" -gt 1 ] ; then
+ echo "Serious issue patching"
+ exit 1
+ fi
+}
+
+build_linux_kernel() {
+ cd "$LINUX_SRCOBJ_DIR"
+
+ kversion=$(make -s kernelversion "${make_args[@]}")
+ pahole_version="$(pahole --version | tr -d 'v')"
+
+ if { verlt "${kversion}" "3.3"; } && [ "${vanilla_config}" = "imx_v6_v7_defconfig" ] ; then
+ # imx_v6_v7 didn't exist before 06965c39b4c63933fa0a1cde2237ef85477c5655
+ if { verlt "${kversion}" "3.2"; } ; then
+ vanilla_config='mx5_defconfig'
+ else
+ vanilla_config='mx51_defconfig'
+ fi
+ fi
+
+ if { verlt "${kversion}" "3.13"; } && [ "${vanilla_config}" = "pseries_le_defconfig" ] ; then
+ # pseries_le_deconfig was introduced in f53e462e907cbaed29c49c0f10f5b8f614e1bf1d
+ vanilla_config='pseries_defconfig'
fi
# Generate kernel configuration
- case "$kversion" in
+ case "$ktag" in
+ *el*)
+ # Copy the EL kernel configuration
+ el_arch="${cross_arch:-$arch}"
+ case "${el_arch}" in
+ amd64)
+ el_arch=x86_64
+ ;;
+ arm64)
+ el_arch=aarch64
+ ;;
+ ppc64el)
+ el_arch=ppc64le
+ ;;
+ *)
+ ;;
+ esac
+ ls "${WORKSPACE}/src/linux-rpm/SOURCES/"
+ if [ -f "${WORKSPACE}/src/linux-rpm/SOURCES/kernel-${el_arch}.config" ] ; then
+ cp "${WORKSPACE}/src/linux-rpm/SOURCES/kernel-${el_arch}.config" .config
+ elif [ -f "${WORKSPACE}/src/linux-rpm/SOURCES/kernel-${el_arch}-rhel.config" ] ; then
+ cp "${WORKSPACE}/src/linux-rpm/SOURCES/kernel-${el_arch}-rhel.config" .config
+ fi
+
+ # Eg.
+ # mm/mempolicy.c: In function ‘mpol_parse_str’:
+ # mm/mempolicy.c:2980:26: error: writing 1 byte into a region of size 0 [-Werror=stringop-overflow=]
+ export KCFLAGS="${KCFLAGS} -Wno-error -Wno-all -Wno-error=stringop-overflow -Wno-error=address-of-packed-member"
+ ;;
+
Ubuntu*)
- fakeroot debian/rules clean
- fakeroot debian/rules genconfigs
- cp CONFIGS/"${ubuntu_config}" "${outdir}"/.config
+ if [ "${cross_arch}" = "powerpc" ] && vergte "${kversion}" "4.10"; then
+ echo "Ubuntu removed big endian powerpc configuration from kernel >= 4.10. Don't try to build it."
+ exit 0
+ fi
+
+ if [ "${cross_arch}" = "riscv64" ] && verlt "${kversion}" "6.2"; then
+ echo "Ubuntu added RISC-V config to their 'regular' kernels in v6.2. Don't try to build it."
+ exit 0
+ fi
+
+ FAKEROOT_ARGS=(
+ 'KW_DEFCONFIG_DIR=.'
+ )
+ fakeroot debian/rules clean "${FAKEROOT_ARGS[@]}"
+
+ # Hack for kernel Ubuntu-hwe-5.8
+ # The debian/control file is produced by the clean target above, so this
+ # check needs to happen afterwards.
+ if [ ! -f "debian/compat" ] && ! grep -q debhelper-compat debian/control; then
+ echo "10" > "debian/compat"
+ fi
+
+ # genconfigs check can fail in certain cases, eg. when a more recent
+ # compiler exposes kernel configuration flags which aren't set in the
+ # Ubuntu annotations.
+ # In any case, the configuration will be updated with any missing values
+ # later in our build script.
+ FAKEROOT_ARGS+=('do_skip_checks=true')
+
+ # Some Ubuntu tags default the toolchain using `gcc?=gcc-XX` in
+ # `debian/rules.d/0-common-vars.mk`. This may fail if the gcc version
+ # used as a default isn't available.
+ # For example, Ubuntu-6.8.0-7.7 sets `gcc?=gcc-13`, and that version
+ # of gcc isn't available on the deb12-amd64 ci-nodes.
+ # Work has also already been done in `select_compiler` to make our
+ # own decision of which compiler to use. As a result of both cases,
+ # our compiler choice should be passed into genconfigs.
+ FAKEROOT_ARGS+=("gcc=${selected_cc}")
+
+ fakeroot debian/rules genconfigs "${FAKEROOT_ARGS[@]}"
+ cp CONFIGS/"${ubuntu_config}" .config
;;
+
*)
- # Que sera sera
- make "${vanilla_config}" CC="$CC" ${koutput}
+ # Force 32bit build on i386, default is 64bit
+ if [ "$arch" = "i386" ]; then
+ export ARCH="i386"
+ fi
+
+ make "${vanilla_config}" "${make_args[@]}"
;;
esac
+ if [ "${vanilla_config}" = "pseries_defconfig" ] && [ "${cross_arch}" = "ppc64el" ] ; then
+ # @see diff <(git show v3.13:arch/powerpc/configs/pseries_defconfig) <(git show v3.13:arch/powerpc/configs/pseries_le_defconfig)
+ scripts/config --enable CONFIG_CPU_LITTLE_ENDIAN
+ scripts/config --enable CONFIG_CMA
+ scripts/config --disable CONFIG_XMON_DEFAULT
+ # scripts/config --disable CONFIG_VIRTUALIZATION
+ # scripts/config --disable CONFIG_KVM_BOOK3S_64
+ scripts/config --disable CONFIG_KVM_BOOK3S_64_HV
+ fi
+
+ if [ -f "init/Kconfig.suse" ] ; then
+ # Get values from git tag, eg. 'rpm-5.14.21-150400.24.108'
+ # Note: the "150400" type of SUSE major version is only present on tags
+ # from 2022 and newer (about half-way through SLE15SP3).
+ # This will not work as expected on earlier tags.
+ SLES_RELEASE="$(echo "${ktag}" | cut -d '-' -f 3 | cut -d'.' -f 1)"
+ scripts/config --set-val CONFIG_SUSE_VERSION $((10#"$(echo "${SLES_RELEASE}" | head -c 2)"))
+ scripts/config --set-val CONFIG_SUSE_PATCHLEVEL $((10#"$(echo "${SLES_RELEASE}" | head -c 4 | tail -c 2)"))
+
+ # Disable the renesas clk driver that has build issues,
+ # eg. drivers/clk/renesas/renesas-rzg2l-cpg.c:185:17: error: ‘clk’ undeclared (first use in this function)
+ scripts/config --disable CONFIG_CLK_RENESAS
+
+ # From drives/spi/spi-atmel.c
+ # ./include/linux/gpio/consumer.h:141:49: note: expected ‘struct gpio_desc *’ but argument is of type 'int'
+ scripts/config --disable CONFIG_SPI_ATMEL
+ scripts/config --disable CONFIG_SPI_AT91_USART
+ scripts/config --disable CONFIG_SPI_ATMEL_QUADSPI
+
+ # drivers/net/wireless/mediatek/mt76/mt7915/testmode.c: In function ‘mt7915_tm_set_wmm_qid’:
+ # drivers/net/wireless/mediatek/mt76/mt7915/testmode.c:176:30: error: ‘struct mt7915_vif’ has no member named ‘mt76’
+ scripts/config --disable CONFIG_WLAN_VENDOR_MEDIATEK
+
+ # drivers/net/wireless/microchip/wilc1000/cfg80211.c: In function ‘wilc_wfi_cfg_parse_ch_attr’:
+ # drivers/net/wireless/microchip/wilc1000/cfg80211.c:970:17: error: ‘for’ loop initial declarations are only allowed in C99 or C11 mode
+ scripts/config --disable CONFIG_WLAN_VENDOR_MICROCHIP
+
+ # fs/f2fs/file.c: In function ‘punch_hole’:
+ # fs/f2fs/file.c:1093:49: error: ‘mapping’ undeclared (first use in this function)
+ scripts/config --disable CONFIG_F2FS_FS
+ fi
+
+ # oldnoconfig was renamed in 4.19
+ if vergte "$kversion" "4.19"; then
+ update_conf_target="olddefconfig"
+ else
+ update_conf_target="oldnoconfig"
+ 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 [ "$HOSTCC" != "gcc-4.8" ]; then
+ if [ -f "arch/x86/kvm/svm.c" ]; then
+ sed -i 's/ R"/ R "/g; s/"R"/" R "/g' arch/x86/kvm/svm.c
+ fi
+
+ if [ -f "arch/x86/kvm/vmx.c" ]; then
+ sed -i 's/ R"/ R "/g; s/"R"/" R "/g' arch/x86/kvm/vmx.c
+ fi
+ fi
+
+ if { verlt "${kversion}" "5.11"; } && { vergte "${kversion}" "4.10"; } ; then
+ # Binutils > 2.35 strips empty symbol tables, causing obltool to fail
+ # in certain cases when files are empty.
+ # @see https://gitlab.com/linux-kernel/stable/-/commit/1d489151e9f9d1647110277ff77282fe4d96d09b
+ #
+ # There doesn't seem to be any LD/AS/AR flags to control this behaviour,
+ # therefore patching tools/objtool/elf.c is attempted.
+ patch_linux_kernel 1d489151e9f9d1647110277ff77282fe4d96d09b
+ if { verlt "${kversion}" "4.18"; } ; then
+ patch_linux_kernel e81e0724432542af8d8c702c31e9d82f57b1ff31
+ fi
+ fi
+
+ if { vergt "${selected_cc_version}" "7"; } && { vergte "${kversion}" "4.14"; } && { verlt "${kversion}" "4.17"; } ; then
+ # Builds fail due to -Werror=restrict in pager.o and str_error_r.o
+ if { verlt "${kversion}" "4.16"; } ; then
+ # This is patched since objtool's Makefile doesn't respect HOSTCFLAGS
+ # @see https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ad343a98e74e85aa91d844310e797f96fee6983b
+ patch_linux_kernel ad343a98e74e85aa91d844310e797f96fee6983b
+ fi
+ if { verlt "${kversion}" "4.17"; } ; then
+ # This is patched since objtool's Makefile doesn't respect HOSTCFLAGS
+ # @see https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=854e55ad289ef8888e7991f0ada85d5846f5afb9
+ patch_linux_kernel 854e55ad289ef8888e7991f0ada85d5846f5afb9
+ fi
+
+ fi
+
+ if { vergt "${selected_cc_version}" "9"; } && { verlt "${kversion}" "5.6"; } ; then
+ # Duplicate decalarations of __force_order
+ # @see https://gitlab.com/linux-kernel/stable/-/commit/df6d4f9db79c1a5d6f48b59db35ccd1e9ff9adfc
+ # However, kaslr_64.c doesn't exit in 4.15, 4.16, it's named pagetable.c
+ if [ -f arch/x86/boot/compressed/pagetable.c ] ; then
+ sed -i '/^unsigned long __force_order;$/d' arch/x86/boot/compressed/pagetable.c
+ fi
+ if [ -f arch/x86/boot/compressed/kaslr_64.c ] ; then
+ patch_linux_kernel df6d4f9db79c1a5d6f48b59db35ccd1e9ff9adfc
+ fi
+ fi
+
+ if { vergte "${kversion}" "4.18"; } && { verlt "${kversion}" "4.19"; } ; then
+ # In some cases, compiling net/bpfilter can fail with the following error:
+ # net/bpfilter/main.c:9:10: fatal error: include/uapi/linux/bpf.h: No such file or directory
+ # make[2]: *** [scripts/Makefile.host:107: net/bpfilter/main.o] Error 1
+ #
+ # While the issue is potentially in a number of old versions, it has only
+ # been observed in v4.18-rt
+ #
+ patch_linux_kernel 303a339f30a9441c4695d3d2cc78f1b33cd959ff
+ fi
+
+ if { vergte "${kversion}" "4.18"; } && { verlt "${kversion}" "4.19"; } ; then
+ # In some cases, compiling net/bpfilter can fail with the following error:
+ # net/bpfilter/main.c:9:10: fatal error: include/uapi/linux/bpf.h: No such file or directory
+ # make[2]: *** [scripts/Makefile.host:107: net/bpfilter/main.o] Error 1
+ #
+ # While the issue is potentially in a number of old versions, it has only
+ # been observed in v4.18-rt
+ #
+ patch_linux_kernel 303a339f30a9441c4695d3d2cc78f1b33cd959ff
+ fi
+
+ if { vergte "${kversion}" "4.15"; } && { verlt "${kversion}" "4.18"; } ; then
+ # Some old kernels fail to build when make is too new
+ # @see https://gitlab.com/linux-kernel/stable/-/commit/9feeb638cde083c737e295c0547f1b4f28e99583
+ patch_linux_kernel 9564a8cf422d7b58f6e857e3546d346fa970191e
+ fi
+
+ if { vergte "${kversion}" "4.14"; } && { verlt "${kversion}" "4.14.55"; } ; then
+ # Some old kernels fail to build when make is too new
+ # @see https://gitlab.com/linux-kernel/stable/-/commit/9feeb638cde083c737e295c0547f1b4f28e99583
+ patch_linux_kernel e82885490a611f2b75a6c27cd7bb09665c1740be
+ fi
+
+ if ( { vergte "${kversion}" "4.15"; } && { verlt "${kversion}" "4.18"; } ) || \
+ ( { vergte "${kversion}" "4.14"; } && { verlt "${kversion}" "4.14.56"; } ) ; then
+ # Some old kernels fail to build when make is too new
+ # @see https://gitlab.com/linux-kernel/stable/-/commit/9feeb638cde083c737e295c0547f1b4f28e99583
+ patch_linux_kernel 9feeb638cde083c737e295c0547f1b4f28e99583
+ fi
+
+ if ( { vergte "${kversion}" "4.12"; } && { verlt "${kversion}" "4.20.17"; } ) || \
+ ( { vergte "${kversion}" "5.0"; } && { verlt "${kversion}" "5.0.12"; } ) ; then
+ # Old kernels can fail to build while on newer host kernels with errors
+ # such as:
+ # In file included from scripts/selinux/genheaders/genheaders.c:19:
+ # ./security/selinux/include/classmap.h:249:2: error: #error New address family defined, please update secclass_map.
+ # @see https://gitlab.com/linux-kernel/stable/-/commit/dfbd199a7cfe3e3cd8531e1353cdbd7175bfbc5e
+ #
+ patch_linux_kernel dfbd199a7cfe3e3cd8531e1353cdbd7175bfbc5e
+ fi
+
+ # Compatibility with binutils >= ~ 2.31
+ if { vergte "${kversion}" "3.19"; } && { verlt "${kversion}" "4.16"; } ; then
+ patch_linux_kernel b21ebf2fb4cde1618915a97cc773e287ff49173e
+ fi
+ if { vergte "${kversion}" "3.17"; } && { verlt "${kversion}" "3.18.69"; } ; then
+ patch_linux_kernel edb9d2d5e647e7a8521b0d35f8452deb02dfd138
+ fi
+ if { vergte "${kversion}" "3.17"; } && { verlt "${kversion}" "3.18.100"; } ; then
+ patch_linux_kernel 3be6583f0b6f1bf1ee650ebf473d9dee36836527
+ patch_linux_kernel 12d839211d080f6a9c370398c41a260365d34c62
+ fi
+ if { vergte "${kversion}" "3.16"; } && { verlt "${kversion}" "3.16.82"; } ; then
+ patch_linux_kernel ad10e6d464796f2a481de4039a43b9cfca034e1c
+ fi
+
+ if ( { vergte "${kversion}" "3.14"; } && { verlt "${kversion}" "4.4"; } ) ||
+ ( { vergte "${kversion}" "4.8"; } && { verlt "${kversion}" "4.18"; } ); then
+ # While the original motivation of this patch is for fixing builds using
+ # clang, the same error occurs between linux >= 3.14 and < 4.4, and in
+ # 4.15, 4.16.
+ # For rt-linux, the error has been observed in 4.8, 4.11, and 4.13.
+ #
+ # This patch only partially applies due to changes in kernel/Makefile,
+ # so a supplementary patch is needed
+ #
+ # Without this patch, builds fail with
+ # Cannot find symbol for section 2: .text.
+ # kernel/elfcore.o: failed
+ #
+ # @see https://github.com/linuxppc/issues/issues/388
+ # @see https://lore.kernel.org/lkml/20201204165742.3815221-2-arnd@kernel.org/
+ #
+ patch_linux_kernel 6e7b64b9dd6d96537d816ea07ec26b7dedd397b9
+ if grep -q elfcore.o kernel/Makefile ; then
+ sed -i '/^.* += elfcore.o$/d' kernel/Makefile
+ fi
+ fi
+ # Same as above for the v4.4 branch
+ if ( { vergte "${kversion}" "4.4"; } && { verlt "${kversion}" "4.4.257"; } ); then
+ patch_linux_kernel 3140b0740b31cc63cf2ee08bc3f746b423eb068d
+ if grep -q elfcore.o kernel/Makefile ; then
+ sed -i '/^.* += elfcore.o$/d' kernel/Makefile
+ fi
+ fi
+
+ if { vergte "${kversion}" "4.5"; } && { verlt "${kversion}" "4.8"; } ; then
+ # Kernels between v4.5 and v4.8 built with gcc >= 8 on arm will hit an
+ # assembler error :
+ #
+ # kernel/.tmp_fork.s: Assembler messages:
+ # kernel/.tmp_fork.s:1790: Error: .err encountered
+ #
+ # @see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85745
+ #
+ patch_linux_kernel 9f73bd8bb445e0cbe4bcef6d4cfc788f1e184007
+ fi
+
+ if ( { vergte "${kversion}" "4.4"; } && { verlt "${kversion}" "4.4.136"; } ) ||
+ ( { vergte "${kversion}" "4.5"; } && { verlt "${kversion}" "4.8"; } ); then
+ # Hacky patch to deal with the following build error:
+ # Cannot find symbol for section 7: .text.unlikely.
+ # kernel/kexec_file.o: failed
+ # make[1]: *** [scripts/Makefile.build:291: kernel/kexec_file.o] Error 1
+ #
+ # This error happens with binutils 2.36 and 2.37, but should probably not
+ # be an issue with binutils 2.38.
+ # @see https://github.com/linuxppc/issues/issues/388
+ # @see https://github.com/bminor/binutils-gdb/commit/c09c8b42021180eee9495bd50d8b35e683d3901b
+ #
+ # There is some sort of config (unspecified in past discussions) which
+ # provokes the error, and there was never a potential fix merged in
+ # this discussion, in part because the build systems of the kernel
+ # switched to objtool instead.
+ #
+ # @see https://lore.kernel.org/all/20210215162209.5e2a475b@gandalf.local.home/
+ #
+ sed -i 's/return txtname;/return shdr0->sh_size ? txtname : NULL;/' scripts/recordmcount.h
+
+ # After applying the above patch, the build continues but fails with
+ # head64.c:(.text.exit+0x5): undefined reference to `__gcov_exit'
+ #
+ scripts/config --disable CONFIG_GCOV_KERNEL
+ fi
+
+ if { vergte "${kversion}" "4.5"; } && { verlt "${kversion}" "4.5.5"; } ; then
+ # drivers/staging/wilc1000/wilc_spi.c:123:34: error: storage size of ‘wilc1000_spi_ops’ isn’t known
+ patch_linux_kernel ce7b516f3f9e11fe4ee06fad0d7e853bb6e8f160
+ fi
+
+ # Newer binutils don't accept 3 operand 'cmp' instructions on ppc64
+ # Convert them to 'cmpw' which was previously done silently
+ if verlt "$kversion" "4.9"; then
+ find arch/powerpc/ -name "*.S" -print0 | xargs -0 sed -i "s/\(cmp\)\(\s\+[a-zA-Z0-9]\+,\s*[a-zA-Z0-9]\+,\s*[a-zA-Z0-9]\+\)/cmpw\2/"
+ find arch/powerpc/ -name "*.S" -print0 | xargs -0 sed -i "s/\(cmpli\)\(\s\+[a-zA-Z0-9]\+,\s*[a-zA-Z0-9]\+,\s*[a-zA-Z0-9]\+\)/cmplwi\2/"
+ sed -i "s/\$pie \-o \"\$ofile\"/\$pie --no-dynamic-linker -o \"\$ofile\"/" arch/powerpc/boot/wrapper
+ fi
+
+ if [ "$(scripts/config --state CONFIG_EXTCON_ADC_JACK)" != "n" ] &&
+ ( { vergte "${kversion}" "4.2"; } && { verlt "${kversion}" "4.12"; } ); then
+ # 73b6ecdb93e8e77752cae9077c424fcdc6f23c39 introduced a change where
+ # extcon-adc-jack.h has an incompatible pointer type.
+ # In GCC >= 5 this will provoke a warning and build failure.
+ # Eg.
+ # drivers/extcon/extcon-adc-jack.c: In function ‘adc_jack_probe’:
+ # drivers/extcon/extcon-adc-jack.c:111:64: error: passing argument 2 of ‘devm_extcon_dev_allocate’ from incompatible pointer type [-Werror=incompatible-pointer-types]
+ # make[2]: *** [scripts/Makefile.build:295: drivers/extcon/extcon-adc-jack.o] Error 1
+ #
+ # 8a522bf2d4f788306443d36b26b54f0aedcdfdbe (in 4.11) has a fix for this warning
+ #
+ patch_linux_kernel 8a522bf2d4f788306443d36b26b54f0aedcdfdbe
+ fi
+
+ if ( { vergte "${kversion}" "4.15"; } && { verlt "${kversion}" "4.15.2"; } ) || \
+ ( { vergte "${kversion}" "4.14"; } && { verlt "${kversion}" "4.14.18"; } ) ; then
+ # Fix an objtool Segmentation fault
+ patch_linux_kernel dd12561854824fd1f05baf2a1b794faa046e2425
+ fi
+
+ if { vergte "${kversion}" "4.14"; } && { verlt "${kversion}" "4.14.268"; } ; then
+ # Builds fail due to -Werror=use-after-free in sigchain.o and help.o
+ patch_linux_kernel e89bb266b710ce056f141f29f091fd468a4a8185
+ fi
+
+ # Fix a typo in v2.6.36.x
+ if [ -f "arch/x86/kernel/entry_64.S" ]; then
+ sed -i 's/END(do_hypervisor_callback)/END(xen_do_hypervisor_callback)/' arch/x86/kernel/entry_64.S
+ fi
+
+ # Fix compiler switch in vdso Makefile for 2.6.36 to 2.6.36.2
+ if { vergte "$kversion" "2.6.36" && verlte "$kversion" "2.6.36.3"; }; then
+ sed -i 's/-m elf_x86_64/-m64/' arch/x86/vdso/Makefile
+ sed -i 's/-m elf_i386/-m32/' arch/x86/vdso/Makefile
+ fi
+
+ # Fix kernel < 3.0 with gcc >= 4.7
+ if verlt "$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
+
+ if [ "${cross_arch}" = "powerpc" ] ; then
+ if { vergte "${kversion}" "4.15"; } && { verlt "${kversion}" "4.16"; } ; then
+ # Avoid register errors such as
+ # aes_generic.c:(.text+0x4e0): undefined reference to `_restgpr_31_x'
+ # @see https://gitlab.com/linux-kernel/stable/-/commit/148b974deea927f5dbb6c468af2707b488bfa2de
+ make_args+=(
+ CFLAGS_aes_generic.o=''
+ )
+ fi
+ fi
+
+ if [ "$(scripts/config --state CONFIG_DEBUG_INFO_BTF)" == "y" ] &&
+ { vergte "${pahole_version}" "1.24"; } &&
+ (
+ ( { vergte "${kversion}" "5.10"; } && { verlt "${kversion}" "6.0"; } ) || [[ "${ktag}" =~ .el8 ]]
+ ) ; then
+ # Some kernels Eg. Ubuntu-hwe-5.13-5.13.0-52.59_20.04.1
+ # fail with the following error:
+ # BTFIDS vmlinux
+ # FAILED: load BTF from vmlinux: Invalid argument
+ #
+ # When CONFIG_DEBUG_INFO_BTF is set, certain versions of pahole require
+ # `--skip_encoding_btf_enum64` to be passed as the kernel doesn't define
+ # BTF_KIND_ENUM64.
+ #
+ # Introduced in 341dfcf8d78eaa3a2dc96dea06f0392eb2978364 (~v5.10)
+ # @see https://lore.kernel.org/bpf/20220825171620.cioobudss6ovyrkc@altlinux.org/t/
+ #
+ if [ -f "scripts/pahole-flags.sh" ] ; then
+ # shellcheck disable=SC2016
+ sed -i 's/ -J ${PAHOLE_FLAGS} / -J ${PAHOLE_FLAGS} --skip_encoding_btf_enum64 /' scripts/link-vmlinux.sh
+ else
+ # shellcheck disable=SC2016
+ sed -i 's/ -J ${extra_paholeopt} / -J ${extra_paholeopt} --skip_encoding_btf_enum64 /' scripts/link-vmlinux.sh
+ # Some older versions of RHEL don't have '${extra_paholeopt}'
+ sed -i 's/${PAHOLE} -J ${1}/${PAHOLE} -J --skip_encoding_btf_enum64 ${1}/' scripts/link-vmlinux.sh
+ fi
+ fi
+
# GCC 4.8
- sed -i "s/CONFIG_CC_STACKPROTECTOR_STRONG=y/# CONFIG_CC_STACKPROTECTOR_STRONG is not set/g" "${outdir}"/.config
+ if [ "$HOSTCC" == "gcc-4.8" ]; then
+ scripts/config --disable CONFIG_CC_STACKPROTECTOR_STRONG
+ scripts/config --disable CONFIG_PPC_OF_BOOT_TRAMPOLINE
+ fi
# Don't try to sign modules
- sed -i "s/CONFIG_MODULE_SIG=y/# CONFIG_MODULE_SIG is not set/g" "${outdir}"/.config
+ scripts/config --disable CONFIG_MODULE_SIG
# 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" "${outdir}"/.config
+ scripts/config --disable CONFIG_STACK_VALIDATION
+
+ # Cause problems with inline assembly on i386
+ scripts/config --disable CONFIG_DEBUG_SECTION_MISMATCH
+
+ # Don't build samples, they are broken on some kernel releases
+ scripts/config --disable CONFIG_SAMPLES
+ scripts/config --disable CONFIG_BUILD_DOCSRC
+
+ # Disable kcov
+ scripts/config --disable CONFIG_KCOV
+
+ # Broken on some RT kernels
+ scripts/config --disable CONFIG_HYPERV
+
+ # Broken drivers
+ scripts/config --disable CONFIG_RAPIDIO_TSI721
+ scripts/config --disable CONFIG_SGI_XP
+ scripts/config --disable CONFIG_MFD_WM8994
+ scripts/config --disable CONFIG_DRM_RADEON
+ scripts/config --disable CONFIG_SND_SOC_WM5100
+ # More recent compiler optimizations (from gcc 8 onwards )expose build errors
+ # with netronome on older kernels.
+ # Observed in 4.11-rt, 4.15-4.17, 5.0-rt - 5.16-rt
+ # It seems easier to disable the driver than to attempt patching.
+ # Eg.
+ # In function ‘ur_load_imm_any’,
+ # inlined from ‘jeq_imm’ at drivers/net/ethernet/netronome/nfp/bpf/jit.c:3146:13:
+ # ./include/linux/compiler.h:350:45: error: call to ‘__compiletime_assert_1062’ declared with attribute error: FIELD_FIT: value too large for the field
+ # 350 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
+ #
+ scripts/config --disable CONFIG_NET_VENDOR_NETRONOME
+ # Eg.
+ # In function ‘memcpy’,
+ # inlined from ‘kszphy_get_strings’ at drivers/net/phy/micrel.c:664:3:
+ # ./include/linux/string.h:305:25: error: call to ‘__read_overflow2’ declared with attribute error: detected read beyond size of object passed as 2nd parameter
+ # 305 | __read_overflow2();
+ # | ^~~~~~~~~~~~~~~~~~
+ # make[3]: *** [scripts/Makefile.build:308: drivers/net/phy/micrel.o] Error 1
+ #
+ scripts/config --disable CONFIG_MICREL_PHY
+
+
+ # IGBVF won't build with recent gcc on 2.6.38.2
+ if { vergte "$kversion" "2.6.37" && verlt "$kversion" "2.6.38"; }; then
+ scripts/config --disable CONFIG_IGBVF
+ fi
+
+ # Don't fail the build on warnings
+ scripts/config --disable CONFIG_WERROR
+ scripts/config --enable CONFIG_PPC_DISABLE_WERROR
# Set required options
- {
- echo "CONFIG_KPROBES=y";
- echo "CONFIG_FTRACE=y";
- echo "CONFIG_BLK_DEV_IO_TRACE=y";
- echo "CONFIG_TRACEPOINTS=y";
- echo "CONFIG_KALLSYMS_ALL=y";
- } >> "${outdir}"/.config
+ scripts/config --enable CONFIG_TRACEPOINTS
+ scripts/config --enable CONFIG_KALLSYMS
+ scripts/config --enable CONFIG_HIGH_RES_TIMERS
+ scripts/config --enable CONFIG_KPROBES
+ scripts/config --enable CONFIG_FTRACE
+ scripts/config --enable CONFIG_BLK_DEV_IO_TRACE
+ scripts/config --enable CONFIG_KALLSYMS_ALL
+ scripts/config --enable CONFIG_HAVE_SYSCALL_TRACEPOINTS
+ scripts/config --enable CONFIG_PERF_EVENTS
+ scripts/config --enable CONFIG_EVENT_TRACING
+ scripts/config --enable CONFIG_KRETPROBES
+
+ # Starting in linux 6.9-rc1, TRIM_UNUSED_SYMS seems to be true
+ # for out build configurations. In earlier versions the default
+ # was set depending on the value of `COMPILE_TEST`.
+ # See upstream commit d2d5cba5d92c4ed23caa86228a1bc31b07e90fe9.
+ scripts/config --disable CONFIG_TRIM_UNUSED_KSYMS
+
+ if [ -n "${DEBUG}" ] ; then
+ cat .config
+ fi
+
+ make "$update_conf_target" "${make_args[@]}"
+ make -j"$NPROC" "${make_args[@]}"
+
+ krelease=$(make -s kernelrelease "${make_args[@]}")
+
+ # Save the kernel and modules
+ mkdir -p "$LINUX_INSTOBJ_DIR/boot"
+ make INSTALL_MOD_PATH="$LINUX_INSTOBJ_DIR" INSTALL_MOD_STRIP=1 modules_install "${make_args[@]}"
+ make INSTALL_MOD_PATH="$LINUX_INSTOBJ_DIR" INSTALL_PATH="$LINUX_INSTOBJ_DIR/boot" install "${make_args[@]}"
+ rm -f "$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 32bits this object is required to link modules
+ if [ "${karch}" = "powerpc" ]; then
+ if [ "$(scripts/config -s CONFIG_PPC64)" = "y" ] && vergte "${kversion}" "5.4"; then
+ :
+ else
+ cp -a --parents arch/powerpc/lib/crtsavres.[So] "${LINUX_HDROBJ_DIR}/"
+ fi
+ 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
+
+ # On riscv with 5.14 the vsdo objects are required
+ if [ "${karch}" = "riscv" ] && \
+ ( { vergte "${kversion}" "5.14"; } && { verlt "${kversion}" "5.15"; } ); then
+ cp -a --parents arch/riscv/kernel/vdso/*.o "${LINUX_HDROBJ_DIR}/"
+ 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.
+ if [ ! -f "${LINUX_HDROBJ_DIR}/include/config/auto.conf" ]; then
+ cp "${LINUX_HDROBJ_DIR}/.config" "${LINUX_HDROBJ_DIR}/include/config/auto.conf"
+ fi
+
+ # Finally clean the object files from the full source tree
+ make clean
+ # And regen the modules support files
+ make modules_prepare "${make_args[@]}"
- make "$oldconf_target" CC="$CC" ${koutput}
- make modules_prepare CC="$CC" ${koutput}
+ # On powerpc 32bits this object is required to link modules
+ if [ "${karch}" = "powerpc" ]; then
+ if [ "$(scripts/config -s CONFIG_PPC64)" = "y" ] && vergte "${kversion}" "5.4"; then
+ :
+ else
+ make arch/powerpc/lib/crtsavres.o "${make_args[@]}"
+ fi
+ fi
- # Debug
- #cat "${outdir}"/.config
+ # On arm64 between 4.13 and 4.15 this object is required to build with ftrace support
+ if [ "${karch}" = "arm64" ]; then
+ if [ -f "arch/arm64/kernel/ftrace-mod.S" ]; then
+ make arch/arm64/kernel/ftrace-mod.o "${make_args[@]}"
+ fi
+ fi
# Version specific tasks
- case "$kversion" in
+ case "$ktag" in
Ubuntu*)
# Add Ubuntu ABI number to kernel headers, this is normally done by the packaging code
- ABINUM="$(echo "$kversion" | grep -P -o 'Ubuntu-(lts-)?.*-\K\d+(?=\..*)')"
- echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> "${outdir}"/include/generated/utsrelease.h
+ 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"
+ ;;
+ rpm-*)
+ # Update the definition of UTS_RELEASE to match something akin to '5.14.21-150400.24.108-default'
+ if [ -f "init/Kconfig.suse" ] ; then
+ SLESVERSION="$(echo "${ktag}" | cut -d'-' -f 3)-default"
+ sed -E -i "s%^(#define UTS_RELEASE \"[\.a-z0-9]+)(\")%\1-${SLESVERSION}\2%g" include/generated/utsrelease.h
+ sed -E -i "s%^(#define UTS_RELEASE \"[\.a-z0-9]+)(\")%\1-${SLESVERSION}\2%g" "${LINUX_HDROBJ_DIR}/include/generated/utsrelease.h"
+ fi
;;
esac
-
- # On powerpc this object is required to link modules
- if [ "${karch}" = "powerpc" ]; then
- make arch/powerpc/lib/crtsavres.o CC="$CC" ${koutput}
- fi
}
-
build_modules() {
- kdir="$1"
- bdir="$2"
+ local kdir="$1"
+ local outdir="$2"
+ local kversion
+
+ kversion=$(make -C "$LINUX_HDROBJ_DIR" -s kernelversion)
- # Get kernel version from source tree
- cd "${kdir}"
- kversion=$(make kernelversion)
+ # Try to catch some compatibility problems by turning some
+ # warnings into errors.
+ #export KCFLAGS="$KCFLAGS -Wall -Werror"
# Enter lttng-modules source dir
- cd "${LTTSRCDIR}"
+ cd "${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.
set +e
# Build modules
- KERNELDIR="${kdir}" make -j"${NPROC}" V=1 CC="$CC"
+ KERNELDIR="${kdir}" make -j"${NPROC}" V=1 "${make_args[@]}"
+ ret=$?
+
+ set -e
# We expect this build to fail, if it doesn't, fail the job.
- if [ "$?" -eq 0 ]; then
+ if [ "$ret" -eq 0 ]; then
echo "This build should have failed."
exit 1
fi
# We have to publish at least one file or the build will fail
- echo "This kernel is broken, there is a deadlock in the timekeeping subsystem." > "${bdir}/BROKEN.txt.ko"
-
- set -e
+ echo "This kernel is broken, there is a deadlock in the timekeeping subsystem." > "${outdir}/BROKEN.txt.ko"
- KERNELDIR="${kdir}" make clean CC="$CC"
+ KERNELDIR="${kdir}" make clean
else # Regular build
# Build modules against full kernel sources
- KERNELDIR="${kdir}" make -j"${NPROC}" V=1 CC="$CC"
+ KERNELDIR="${kdir}" make -j"${NPROC}" V=1 "${make_args[@]}"
# Install modules to build dir
- KERNELDIR="${kdir}" make INSTALL_MOD_PATH="${bdir}" modules_install CC="$CC"
+ KERNELDIR="${kdir}" make INSTALL_MOD_PATH="${outdir}" modules_install
# Clean build dir
- KERNELDIR="${kdir}" make clean CC="$CC"
+ KERNELDIR="${kdir}" make clean
fi
}
# Use all CPU cores
NPROC=$(nproc)
-LTTSRCDIR="${WORKSPACE}/src/lttng-modules"
-LNXSRCDIR="${WORKSPACE}/src/linux"
+MODULES_GIT_DIR="${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"
-LNXBUILDDIR="${WORKSPACE}/build/linux"
-LNXHDRDIR="${WORKSPACE}/build/linux-headers"
+cd "$WORKSPACE"
-LTTBUILDKSRCDIR="${WORKSPACE}/build/lttng-modules-ksrc"
-LTTBUILDKHDRDIR="${WORKSPACE}/build/lttng-modules-khdr"
+# Create build directories
+mkdir -p "${LINUX_SRCOBJ_DIR}" "${LINUX_HDROBJ_DIR}" "${LINUX_INSTOBJ_DIR}" "${MODULES_OUTPUT_KSRC_DIR}" "${MODULES_OUTPUT_KHDR_DIR}"
+print_header "Clone LTTng-modules sources"
+git_clone_modules_sources
# Setup cross compile env if available
-if [ "x${cross_arch:-}" != "x" ]; then
+if [ "x${cross_arch}" != "x" ]; then
case "$cross_arch" in
"armhf")
karch="arm"
cross_compile="arm-linux-gnueabihf-"
- vanilla_config="allyesconfig"
+ vanilla_config="imx_v6_v7_defconfig"
ubuntu_config="armhf-config.flavour.generic"
;;
"arm64")
karch="arm64"
cross_compile="aarch64-linux-gnu-"
- vanilla_config="allyesconfig"
+ vanilla_config="defconfig"
ubuntu_config="arm64-config.flavour.generic"
;;
ubuntu_config="ppc64el-config.flavour.generic"
;;
+ "riscv64")
+ karch="riscv"
+ cross_compile="riscv64-linux-gnu-"
+ vanilla_config="defconfig"
+ ubuntu_config="riscv64-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${arch:-}" != "x" ]; then
+elif [ "x${arch}" != "x" ]; then
case "$arch" in
- "x86-32")
+ "i386")
karch="x86"
- vanilla_config="allyesconfig"
+ vanilla_config="allmodconfig"
ubuntu_config="i386-config.flavour.generic"
;;
- "x86-64")
+ "amd64")
karch="x86"
- vanilla_config="allyesconfig"
+ vanilla_config="allmodconfig"
ubuntu_config="amd64-config.flavour.generic"
;;
"armhf")
karch="arm"
- vanilla_config="allyesconfig"
+ vanilla_config="allmodconfig"
ubuntu_config="armhf-config.flavour.generic"
;;
"arm64")
karch="arm64"
- vanilla_config="allyesconfig"
+ vanilla_config="allmodconfig"
ubuntu_config="arm64-config.flavour.generic"
;;
"powerpc")
karch="powerpc"
- vanilla_config="allyesconfig"
+ vanilla_config="allmodconfig"
ubuntu_config="powerpc-config.flavour.powerpc-smp"
;;
"ppc64el")
karch="powerpc"
- vanilla_config="allyesconfig"
+ vanilla_config="allmodconfig"
ubuntu_config="ppc64el-config.flavour.generic"
;;
+ "riscv64")
+ karch="riscv"
+ vanilla_config="allmodconfig"
+ ubuntu_config="riscv64-config.flavour.generic"
+ ;;
+
*)
echo "Unsupported arch $arch"
exit 1
;;
esac
-
- # Use gcc 4.9, older kernel don't build with gcc 5
- CC=gcc-4.9
-
- oldconf_target="silentoldconfig"
-
else
- echo "Not arch or cross_arch specified"
+ echo "No arch or cross_arch specified"
exit 1
fi
+# First get the kernel build from the object store, or build it, if it's
+# not available.
-# Create build directories
-mkdir -p "${LNXBUILDDIR}" "${LNXHDRDIR}" "${LTTBUILDKSRCDIR}" "${LTTBUILDKHDRDIR}"
+set +x
+echo "# Setup endpoint
+host_base = obj.internal.efficios.com
+host_bucket = obj.internal.efficios.com
+bucket_location = us-east-1
+use_https = True
+# Setup access keys
+access_key = jenkins
+secret_key = echo123456
+# Enable S3 v4 signature APIs
+signature_v2 = False" > "$WORKSPACE/.s3cfg"
+set -x
-## PREPARE DISTRO STYLE KERNEL HEADERS / DEVEL
+url_hash="$(echo -n "$kgitrepo" | md5sum | awk '{ print $1 }')"
+obj_name="linux.tar.bz2"
-# Enter linux source dir
-cd "${LNXSRCDIR}"
+if [ -z "${cross_arch}" ]; then
+ obj_url_prefix="$OBJ_STORE_URL/linux-build/$url_hash/$ktag/platform-${platform}/$arch/native"
+else
+ obj_url_prefix="$OBJ_STORE_URL/linux-build/$url_hash/$ktag/platform-${platform}/${cross_arch}"
+fi
-prepare_lnx_sources "."
+obj_url="$obj_url_prefix/$obj_name"
-# For RT kernels, copy version file
-if [ -s localversion-rt ]; then
- cp -a localversion-rt "${LNXHDRDIR}"
-fi
+set +e
+# In s3cmd 2.3, the return code of get when an object does not exist (64)
+# is different than in 2.2 (12). The return codes of 's3cmd info' are
+# consistent between 2.2 and 2.3.
+s3cmd -c "$WORKSPACE/.s3cfg" info "$obj_url"
+ret=$?
+set -e
-# 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
+case "$ret" in
+ "0")
+ print_header "Get sources and prebuilt kernel"
+ s3cmd -c "$WORKSPACE/.s3cfg" get "$obj_url"
+ extract_archive_obj
-# Copy modules related stuff, if available
-if [ -s Module.symvers ]; then
- cp Module.symvers "${LNXHDRDIR}"
-fi
+ print_header "Select compiler and set build flags"
+ select_compiler
+ export_kbuild_flags
+ ;;
-if [ -s System.map ]; then
- cp System.map "${LNXHDRDIR}"
-fi
+ "12")
+ print_header "Clone kernel sources"
-if [ -s Module.markers ]; then
- cp Module.markers "${LNXHDRDIR}"
-fi
+ # Build all the things and upload
+ # then finish the module build...
-# Copy config file
-cp .config "${LNXHDRDIR}"
+ git_clone_linux_sources
+ git_export_linux_sources
-# Make sure the Makefile and version.h have a matching timestamp so that
-# external modules can be built
-if [ -s "${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" "${LNXHDRDIR}/include/generated/autoconf.h"
+ print_header "Select compiler and set build flags"
+ select_compiler
+ export_kbuild_flags
-# Copy .config to include/config/auto.conf so "make prepare" is unnecessary.
-cp "${LNXHDRDIR}/.config" "${LNXHDRDIR}/include/config/auto.conf"
+ ## PREPARE FULL LINUX SOURCE TREE
+ print_header "Build kernel from source"
+ build_linux_kernel
+ ## EXTRACT DISTRO STYLE KERNEL HEADERS / DEVEL
+ extract_distro_headers
+ print_header "Upload kernel to object storage"
+ tar_archive_obj
+ upload_archive_obj
+ ;;
-## PREPARE FULL LINUX SOURCE TREE
+ *)
+ echo "Unknown error? Abort"
+ exit 1
+ ;;
+esac
-# Enter linux source dir
-cd "${LNXSRCDIR}"
-# Make sure linux source dir is clean
-git clean -xdf
+## BUILD modules
+# Either we downloaded a pre-build kernel or we built it and uploaded
+# the archive for future builds.
-prepare_lnx_sources "${LNXBUILDDIR}"
+cd "$WORKSPACE"
+print_header "Build modules against full kernel sources"
+build_modules "${LINUX_SRCOBJ_DIR}" "${MODULES_OUTPUT_KSRC_DIR}"
-## BUILD modules
+print_header "Build modules against kernel headers"
+build_modules "${LINUX_HDROBJ_DIR}" "${MODULES_OUTPUT_KHDR_DIR}"
-# Build modules against full kernel sources
-build_modules "${LNXBUILDDIR}" "${LTTBUILDKSRCDIR}"
-# Build modules against kernel headers
-build_modules "${LNXHDRDIR}" "${LTTBUILDKHDRDIR}"
+print_header "Check for built modules in install directory"
-# Make sure modules were built
-tree "${LTTBUILDKSRCDIR}"
-if [ "x$(find "${LTTBUILDKSRCDIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then
+# Make sure some modules were actually built
+tree "${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 "${LTTBUILDKHDRDIR}"
-if [ "x$(find "${LTTBUILDKHDRDIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then
+tree "${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
projects / lttng-ci.git / blobdiff