-#!/bin/bash -exu
+#!/bin/bash
#
-# Copyright (C) 2016-2018 - Michael Jeanson <mjeanson@efficios.com>
+# 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
# 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
-arch=${arch:-}
+platforms=${platforms:-}
+# Derive arch from label if it isn't set
+if [ -z "${arch:-}" ] ; then
+ # Labels may be platform specific, eg. jammy-amd64, deb12-armhf
+ regex='[[:alnum:]]+-([[:alnum:]]+)'
+ if [[ "${platforms}" =~ ${regex} ]] ; then
+ arch="${BASH_REMATCH[1]}"
+ else
+ arch="${platforms:-}"
+ fi
+fi
+
cross_arch=${cross_arch:-}
ktag=${ktag:-}
kgitrepo=${kgitrepo:-}
mversion=${mversion:-}
mgitrepo=${mgitrepo:-}
+make_args=()
+DEBUG=${DEBUG:-}
## FUNCTIONS ##
}
verlt() {
+ # shellcheck disable=SC2015
[ "$1" = "$2" ] && return 1 || verlte "$1" "$2"
}
}
vergt() {
+ # shellcheck disable=SC2015
[ "$1" = "$2" ] && return 1 || vergte "$1" "$2"
}
-
git_clone_modules_sources() {
mkdir -p "$MODULES_GIT_DIR"
- git clone --depth=1 -b "${mversion}" "${mgitrepo}" "$MODULES_GIT_DIR"
+
+ # If the version starts with "refs/", checkout the specific git ref, otherwise treat it
+ # as a branch name.
+ if [ "${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
+ git clone --no-tags --depth=1 -b "${mversion}" "${mgitrepo}" "$MODULES_GIT_DIR"
+ fi
}
# Checkout a shallow kernel tree of the specified tag
extract_archive_obj() {
- tar -xf "$WORKSPACE/$obj_name" -C "$LINUX_OBJ_DIR"
+ tar -xf "$WORKSPACE/$obj_name" -C "$LINUX_OBJ_DIR" -I pbzip2
rm -f "$WORKSPACE/$obj_name"
}
cd -
}
+list_gccs() {
+ local gccs
+ gccs=()
+ IFS=: read -r -a path_array <<< "$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() {
local selected_cc
set +e
- for cc in gcc-7 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
+ 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"
break
fi
set -e
+ # Force gcc-4.8 for kernels before 4.4
+ if { verlt "$kversion" "4.4"; }; then
+ selected_cc='gcc-4.8'
+ fi
+
if [ "x$selected_cc" = "x" ]; then
echo "Found no suitable compiler."
exit 1
fi
- # Force gcc-4 for buggy kernel branches
- if { vergte "$kversion" "3.2" && verlt "$kversion" "3.3"; } || \
- { vergte "$kversion" "3.4" && verlt "$kversion" "3.5"; } || \
- { vergte "$kversion" "3.17" && verlt "$kversion" "3.18"; }; then
- selected_cc=gcc-4.8
+ _KAFLAGS=()
+ _KCFLAGS=()
+ _KCPPFLAGS=()
+ _HOSTCFLAGS=()
+ if [ "$selected_cc" != "gcc-4.8" ]; then
+ # Older kernel Makefiles do not expect the compiler to default to PIE
+ _KAFLAGS+=(-fno-pie)
+ _KCFLAGS+=(
+ -fno-pie
+ -no-pie
+ -fno-stack-protector
+ )
+ _KCPPFLAGS+=(-fno-pie)
fi
- case "$ktag" in
- Ubuntu*)
- if { vergte "$kversion" "3.13" && verlt "$kversion" "3.14"; }; then
- selected_cc=gcc-4.8
+ selected_cc_version="$(echo "${selected_cc}" | cut -d'-' -f2)"
+ 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 [ "${cross_arch:-}" == "armhf" ] ; then
+ if { verlt "${kversion}" "5.14"; } ; 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
- ;;
- esac
+ fi
- if [ "$selected_cc" != "gcc-4.8" ]; then
- # Older kernel Makefiles do not expect the compiler to default to PIE
- KAFLAGS="-fno-pie"
- KCFLAGS="-fno-pie -no-pie"
- KCPPFLAGS="-fno-pie"
- export KAFLAGS KCFLAGS KCPPFLAGS
+ if { vergt "${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
cd -
}
+patch_linux_kernel() {
+ local commit_hash
+ commit_hash="$1"
+ set +e
+ git -C "${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)
+ 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 "$ktag" in
exit 0
fi
fi
- fakeroot debian/rules clean
- fakeroot debian/rules genconfigs
+
+ # Disable riscv64 config generation, we don't have a toolchain on bionic
+ sed -i 's/riscv64 //' debian.master/etc/kernelconfig
+
+ fakeroot debian/rules clean KW_DEFCONFIG_DIR=.
+
+ # Hack for kernel Ubuntu-hwe-5.8
+ # The debian/control file is produced by the clean target above, so this
+ # check needs to happen afterwards.
+ if [ ! -f "debian/compat" ] && ! grep -q debhelper-compat debian/control; then
+ echo "10" > "debian/compat"
+ fi
+
+ # genconfigs check can fail in certain cases, eg. when a more recent
+ # compiler exposes kernel configuration flags which aren't set in the
+ # Ubuntu annotations.
+ # In any case, the configuration will be updated with any missing values
+ # later in our build script.
+ fakeroot debian/rules genconfigs KW_DEFCONFIG_DIR=. do_skip_checks=true
cp CONFIGS/"${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 "${vanilla_config}"
+ make "${vanilla_config}" "${make_args[@]}"
;;
esac
- # silentoldconfig was renamed in 4.19
+ if [ "${vanilla_config}" = "pseries_defconfig" ] && [ "${cross_arch}" = "ppc64el" ] ; then
+ # @see diff <(git show v3.13:arch/powerpc/configs/pseries_defconfig) <(git show v3.13:arch/powerpc/configs/pseries_le_defconfig)
+ scripts/config --enable CONFIG_CPU_LITTLE_ENDIAN
+ scripts/config --enable CONFIG_CMA
+ scripts/config --disable CONFIG_XMON_DEFAULT
+ # scripts/config --disable CONFIG_VIRTUALIZATION
+ # scripts/config --disable CONFIG_KVM_BOOK3S_64
+ scripts/config --disable CONFIG_KVM_BOOK3S_64_HV
+ fi
+
+ # oldnoconfig was renamed in 4.19
if vergte "$kversion" "4.19"; then
- update_conf_target="syncconfig"
+ update_conf_target="olddefconfig"
else
- update_conf_target="silentoldconfig"
+ update_conf_target="oldnoconfig"
fi
# Fix 'defined(@array)' was removed from recent perl
fi
# Fix syntax of inline assembly which is confused with C++11 raw strings on gcc >= 5
- if [ "$CC" != "gcc-4.8" ]; then
+ if [ "$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
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 "${kversion}" "4.15"; } && { verlt "${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
+ patch_linux_kernel 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;$/d' arch/x86/boot/compressed/pagetable.c
+ fi
+ fi
+
+ if { vergte "${kversion}" "4.15"; } && { verlt "${kversion}" "4.18"; } ; then
+ # Some old kernels fail to build when make is too new
+ # @see https://gitlab.com/linux-kernel/stable/-/commit/9feeb638cde083c737e295c0547f1b4f28e99583
+ patch_linux_kernel 9564a8cf422d7b58f6e857e3546d346fa970191e
+ # @see https://gitlab.com/linux-kernel/stable/-/commit/9feeb638cde083c737e295c0547f1b4f28e99583
+ patch_linux_kernel 9feeb638cde083c737e295c0547f1b4f28e99583
+ fi
+
+ if { vergte "${kversion}" "4.12"; } && { verlt "${kversion}" "4.19"; } ; then
+ # Old kernels can fail to build while on newer host kernels with errors
+ # such as:
+ # In file included from scripts/selinux/genheaders/genheaders.c:19:
+ # ./security/selinux/include/classmap.h:249:2: error: #error New address family defined, please update secclass_map.
+ # @see https://gitlab.com/linux-kernel/stable/-/commit/dfbd199a7cfe3e3cd8531e1353cdbd7175bfbc5e
+ #
+ patch_linux_kernel dfbd199a7cfe3e3cd8531e1353cdbd7175bfbc5e
+ fi
+
+ if { vergte "${kversion}" "3.18"; } && { verlt "${kversion}" "4.4"; } ; then
+ # Compatibility with binutils >= ~ 2.31
+ patch_linux_kernel b21ebf2fb4cde1618915a97cc773e287ff49173e
+ fi
+
+ # The above patch only partially applies linux 3.17, and has been, so a
+ # rebased version is used instead.
+ if { vergte "${kversion}" "3.17"; } && { verlt "${kversion}" "3.18"; } ; then
+ cat <<'EOF' | patch -p1
+diff --git a/arch/x86/kernel/machine_kexec_64.c b/arch/x86/kernel/machine_kexec_64.c
+index 48598105..0652c5b6 100644
+--- a/arch/x86/kernel/machine_kexec_64.c
++++ b/arch/x86/kernel/machine_kexec_64.c
+@@ -516,6 +516,7 @@ int arch_kexec_apply_relocations_add(const Elf64_Ehdr *ehdr,
+ goto overflow;
+ break;
+ case R_X86_64_PC32:
++ case R_X86_64_PLT32:
+ value -= (u64)address;
+ *(u32 *)location = value;
+ break;
+diff --git a/arch/x86/kernel/module.c b/arch/x86/kernel/module.c
+index e69f9882..7c6bc9fe 100644
+--- a/arch/x86/kernel/module.c
++++ b/arch/x86/kernel/module.c
+@@ -180,6 +180,7 @@ int apply_relocate_add(Elf64_Shdr *sechdrs,
+ goto overflow;
+ break;
+ case R_X86_64_PC32:
++ case R_X86_64_PLT32:
+ val -= (u64)loc;
+ *(u32 *)loc = val;
+ #if 0
+diff --git a/arch/x86/tools/relocs.c b/arch/x86/tools/relocs.c
+index bbb1d225..8deeacbc 100644
+--- a/arch/x86/tools/relocs.c
++++ b/arch/x86/tools/relocs.c
+@@ -763,6 +763,7 @@ static int do_reloc64(struct section *sec, Elf_Rel *rel, ElfW(Sym) *sym,
+ switch (r_type) {
+ case R_X86_64_NONE:
+ case R_X86_64_PC32:
++ case R_X86_64_PLT32:
+ /*
+ * NONE can be ignored and PC relative relocations don't
+ * need to be adjusted.
+EOF
+ fi
+
+ if ( { vergte "${kversion}" "3.15"; } && { verlt "${kversion}" "4.4"; } ) ||
+ ( { vergte "${kversion}" "4.15"; } && { verlt "${kversion}" "4.17"; } ); then
+ # While the original motivation of this patch is for fixing builds using
+ # clang, the same error occurs between linux >= 3.15 and < 4.4, and in
+ # 4.15, 4.16.
+ #
+ # This patch only partially applies due to changes in kernel/Makefile,
+ # so a supplementary patch is needed
+ #
+ # Without this patch, builds fail with
+ # Cannot find symbol for section 2: .text.
+ # kernel/elfcore.o: failed
+ #
+ # @see https://github.com/linuxppc/issues/issues/388
+ # @see https://lore.kernel.org/lkml/20201204165742.3815221-2-arnd@kernel.org/
+ #
+ patch_linux_kernel 6e7b64b9dd6d96537d816ea07ec26b7dedd397b9
+ if grep -q elfcore.o kernel/Makefile ; then
+ sed -i '/^.* += elfcore.o$/d' kernel/Makefile
+ fi
+ fi
+
+ # 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
+
# 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 "$kversion" "3.0"; then
sed -i '/linux\/compiler.h/a #include <linux\/linkage.h> \/* For asmregparm *\/' arch/x86/include/asm/ptrace.h
echo "header-y += linkage.h" >> include/linux/Kbuild
fi
+ if [ "${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"; } ;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
+ sed -i 's/ -J ${PAHOLE_FLAGS} / -J ${PAHOLE_FLAGS} --skip_encoding_btf_enum64 /' scripts/link-vmlinux.sh
+ else
+ sed -i 's/ -J ${extra_paholeopt} / -J ${extra_paholeopt} --skip_encoding_btf_enum64 /' scripts/link-vmlinux.sh
+ fi
+ fi
+
# GCC 4.8
- sed -i "s/CONFIG_CC_STACKPROTECTOR_STRONG=y/# CONFIG_CC_STACKPROTECTOR_STRONG is not set/g" .config
+ if [ "$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" .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" .config
+ scripts/config --disable CONFIG_STACK_VALIDATION
# Cause problems with inline assembly on i386
- sed -i "s/CONFIG_DEBUG_SECTION_MISMATCH=y/# CONFIG_DEBUG_SECTION_MISMATCH is not set/g" .config
+ 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.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
+ scripts/config --disable CONFIG_IGBVF
fi
- # 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";
- } >> .config
+ # Don't fail the build on warnings
+ scripts/config --disable CONFIG_WERROR
+ scripts/config --enable CONFIG_PPC_DISABLE_WERROR
- # Debug
- #cat .config
+ # Set required options
+ 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
+
+ if [ -n "${DEBUG}" ] ; then
+ cat .config
+ fi
- make "$update_conf_target" CC="$CC"
- make -j"$NPROC" CC="$CC"
+ make "$update_conf_target" "${make_args[@]}"
+ make -j"$NPROC" "${make_args[@]}"
- krelease=$(make -s kernelrelease)
+ 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 INSTALL_PATH="$LINUX_INSTOBJ_DIR/boot" install
+ make INSTALL_MOD_PATH="$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"
rm -f "${LINUX_HDROBJ_DIR}/scripts/*.o"
rm -f "${LINUX_HDROBJ_DIR}/scripts/*/*.o"
- # On powerpc this object is required to link modules
+ # On powerpc 32bits this object is required to link modules
if [ "${karch}" = "powerpc" ]; then
- cp -a --parents arch/powerpc/lib/crtsavres.[So] "${LINUX_HDROBJ_DIR}/"
+ if [ "x$(scripts/config -s CONFIG_PPC64)" = "xy" ] && vergte "${kversion}" "5.4"; then
+ :
+ else
+ cp -a --parents arch/powerpc/lib/crtsavres.[So] "${LINUX_HDROBJ_DIR}/"
+ fi
fi
# On arm64 between 4.13 and 1.15 this object is required to build with ftrace support
touch -r "${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" "${LINUX_HDROBJ_DIR}/include/config/auto.conf"
+ if [ ! -f "${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 CC="$CC"
+ make modules_prepare "${make_args[@]}"
- # On powerpc this object is required to link modules
+ # On powerpc 32bits this object is required to link modules
if [ "${karch}" = "powerpc" ]; then
- make arch/powerpc/lib/crtsavres.o CC="$CC"
+ if [ "x$(scripts/config -s CONFIG_PPC64)" = "xy" ] && vergte "${kversion}" "5.4"; then
+ :
+ else
+ make arch/powerpc/lib/crtsavres.o "${make_args[@]}"
+ fi
fi
# On arm64 between 4.13 and 4.15 this object is required to build with ftrace support
if [ "${karch}" = "arm64" ]; then
if [ -f "arch/arm64/kernel/ftrace-mod.S" ]; then
- make arch/arm64/kernel/ftrace-mod.o CC="$CC"
+ make arch/arm64/kernel/ftrace-mod.o "${make_args[@]}"
fi
fi
kversion=$(make -C "$LINUX_HDROBJ_DIR" -s kernelversion)
+ # Try to catch some compatibility problems by turning some
+ # warnings into errors.
+ #export KCFLAGS="$KCFLAGS -Wall -Werror"
+
# Enter lttng-modules source dir
cd "${MODULES_GIT_DIR}"
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 [ "$ret" -eq 0 ]; then
echo "This build should have failed."
exit 1
fi
# We have to publish at least one file or the build will fail
echo "This kernel is broken, there is a deadlock in the timekeeping subsystem." > "${outdir}/BROKEN.txt.ko"
- set -e
-
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="${outdir}" modules_install
"armhf")
karch="arm"
cross_compile="arm-linux-gnueabihf-"
- vanilla_config="allyesconfig"
+ vanilla_config="imx_v6_v7_defconfig"
ubuntu_config="armhf-config.flavour.generic"
;;
"arm64")
karch="arm64"
cross_compile="aarch64-linux-gnu-"
- vanilla_config="allyesconfig"
+ vanilla_config="defconfig"
ubuntu_config="arm64-config.flavour.generic"
;;
case "$arch" in
"i386")
karch="x86"
- vanilla_config="allyesconfig"
+ vanilla_config="allmodconfig"
ubuntu_config="i386-config.flavour.generic"
;;
"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"
;;
;;
esac
else
- echo "Not arch or cross_arch specified"
+ echo "No arch or cross_arch specified"
exit 1
fi
# Enable S3 v4 signature APIs
signature_v2 = False" > "$WORKSPACE/.s3cfg"
-url_hash="$(echo -n "$kgitrepo/$ktag/$arch/$cross_arch" | md5sum | awk '{ print $1 }')"
+url_hash="$(echo -n "$kgitrepo" | md5sum | awk '{ print $1 }')"
obj_name="linux.tar.bz2"
-obj_url_prefix="$OBJ_STORE_URL/linux-build/$url_hash"
+
+if [ "x${cross_arch}" = "x" ]; then
+ obj_url_prefix="$OBJ_STORE_URL/linux-build/$url_hash/$ktag/platform-${platforms}/$arch/native"
+else
+ obj_url_prefix="$OBJ_STORE_URL/linux-build/$url_hash/$ktag/platform-${platforms}/${cross_arch}"
+fi
+
obj_url="$obj_url_prefix/$obj_name"
set +e
-s3cmd -c "$WORKSPACE/.s3cfg" get "$obj_url"
+# 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=$?
set -e
case "$ret" in
"0")
+ s3cmd -c "$WORKSPACE/.s3cfg" get "$obj_url"
extract_archive_obj
;;
select_compiler
+selected_cc_version="$(echo "${selected_cc}" | cut -d'-' -f2)"
+# 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 lltng-modules on aarch64 requires gcc >= 5.1"
+ exit 0
+fi
+
## BUILD modules
# Either we downloaded a pre-build kernel or we built it and uploaded
# the archive for future builds.
projects / lttng-ci.git / blobdiff