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"
}
selected_cc='gcc-4.8'
fi
- if [ "x$selected_cc" = "x" ]; then
+ if [ -z "$selected_cc" ]; then
echo "Found no suitable compiler."
exit 1
fi
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
fi
fi
- # 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
fi
fi
- if { vergt "${selected_cc_version}" "7"; } && { vergte "${kversion}" "4.15"; } && { verlt "${kversion}" "4.17"; } ; then
+ if { vergt "${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 "${kversion}" "4.16"; } ; then
# This is patched since objtool's Makefile doesn't respect HOSTCFLAGS
patch_linux_kernel 854e55ad289ef8888e7991f0ada85d5846f5afb9
fi
- # More recent compiler optimizations expose build errors with netronome.
- # It seems easier to disable the driver than to attempt patching.
- scripts/config --disable CONFIG_NET_VENDOR_NETRONOME
- scripts/config --disable CONFIG_MICREL_PHY
+ fi
+ if { vergt "${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}" "4.18"; } ; then
- # Old kernels can fail to build while on newer host kernels
+ 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
- if { vergte "${kversion}" "3.18"; } && { verlt "${kversion}" "4.4"; } ; then
+ if { vergte "${kversion}" "3.18"; } && { verlt "${kversion}" "4.16"; } ; then
# Compatibility with binutils >= ~ 2.31
patch_linux_kernel b21ebf2fb4cde1618915a97cc773e287ff49173e
fi
EOF
fi
- if ( { vergte "${kversion}" "3.15"; } && { verlt "${kversion}" "4.4"; } ) ||
- ( { vergte "${kversion}" "4.15"; } && { verlt "${kversion}" "4.17"; } ); then
+ 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 >= 3.15 and < 4.4, and in
+ # 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
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
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 "${kversion}" "4.14.268"; } ; then
+ # Builds fail due to -Werror=use-after-free in sigchain.o and help.o
+ patch_linux_kernel e89bb266b710ce056f141f29f091fd468a4a8185
+ fi
+
# Fix a typo in v2.6.36.x
if [ -f "arch/x86/kernel/entry_64.S" ]; then
sed -i 's/END(do_hypervisor_callback)/END(xen_do_hypervisor_callback)/' arch/x86/kernel/entry_64.S
fi
fi
+ if [ "$(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 ${extra_paholeopt} --skip_encoding_btf_enum64 /' scripts/link-vmlinux.sh
+ fi
+ fi
+
# GCC 4.8
if [ "$HOSTCC" == "gcc-4.8" ]; then
scripts/config --disable CONFIG_CC_STACKPROTECTOR_STRONG
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
make "$update_conf_target" "${make_args[@]}"
make -j"$NPROC" "${make_args[@]}"
- krelease=$(make -s kernelrelease "${mark_args[@]}")
+ krelease=$(make -s kernelrelease "${make_args[@]}")
# Save the kernel and modules
mkdir -p "$LINUX_INSTOBJ_DIR/boot"
# Copy arch includes
(find arch -name include -type d -print0 | \
- xargs -0 -n1 -i: find : -type f) | \
+ xargs -0 -n1 -I '{}' find '{}' -type f) | \
cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
# Copy arch scripts
(find arch -name scripts -type d -print0 | \
- xargs -0 -n1 -i: find : -type f) | \
+ xargs -0 -n1 -I '{}' find '{}' -type f) | \
cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
# Cleanup scripts
# On powerpc 32bits this object is required to link modules
if [ "${karch}" = "powerpc" ]; then
- if [ "x$(scripts/config -s CONFIG_PPC64)" = "xy" ] && vergte "${kversion}" "5.4"; then
+ if [ "$(scripts/config -s CONFIG_PPC64)" = "y" ] && vergte "${kversion}" "5.4"; then
:
else
cp -a --parents arch/powerpc/lib/crtsavres.[So] "${LINUX_HDROBJ_DIR}/"
# On powerpc 32bits this object is required to link modules
if [ "${karch}" = "powerpc" ]; then
- if [ "x$(scripts/config -s CONFIG_PPC64)" = "xy" ] && vergte "${kversion}" "5.4"; then
+ if [ "$(scripts/config -s CONFIG_PPC64)" = "y" ] && vergte "${kversion}" "5.4"; then
:
else
make arch/powerpc/lib/crtsavres.o "${make_args[@]}"
url_hash="$(echo -n "$kgitrepo" | md5sum | awk '{ print $1 }')"
obj_name="linux.tar.bz2"
-if [ "x${cross_arch}" = "x" ]; then
+if [ -z "${cross_arch}" ]; then
obj_url_prefix="$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}"
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