3 # Copyright (C) 2016-2019 Michael Jeanson <mjeanson@efficios.com>
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.
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.
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/>.
21 platforms
=${platforms:-}
22 # Derive arch from label if it isn't set
23 if [ -z "${arch:-}" ] ; then
24 # Labels may be platform specific, eg. jammy-amd64, deb12-armhf
25 regex
='[[:alnum:]]+-([[:alnum:]]+)'
26 if [[ "${platforms}" =~
${regex} ]] ; then
27 arch
="${BASH_REMATCH[1]}"
33 cross_arch
=${cross_arch:-}
35 kgitrepo
=${kgitrepo:-}
36 mversion
=${mversion:-}
37 mgitrepo
=${mgitrepo:-}
44 # Kernel version compare functions
46 [ "$1" = "$(printf '%s\n%s' "$1" "$2" | sort -V | head -n1)" ]
50 # shellcheck disable=SC2015
51 [ "$1" = "$2" ] && return 1 || verlte
"$1" "$2"
55 [ "$1" = "$(printf '%s\n%s' "$1" "$2" | sort -V | tail -n1)" ]
59 # shellcheck disable=SC2015
60 [ "$1" = "$2" ] && return 1 || vergte
"$1" "$2"
63 git_clone_modules_sources
() {
64 mkdir
-p "$MODULES_GIT_DIR"
66 # If the version starts with "refs/", checkout the specific git ref, otherwise treat it
68 if [ "${mversion:0:5}" = "refs/" ]; then
69 git clone
--no-tags --depth=1 "${mgitrepo}" "$MODULES_GIT_DIR"
70 (cd "$MODULES_GIT_DIR" && git fetch origin
"${mversion}" && git checkout FETCH_HEAD
)
72 git clone
--no-tags --depth=1 -b "${mversion}" "${mgitrepo}" "$MODULES_GIT_DIR"
76 # Checkout a shallow kernel tree of the specified tag
77 git_clone_linux_sources
() {
78 mkdir
-p "$LINUX_GIT_DIR"
79 git clone
--depth=1 -b "${ktag}" --reference "$LINUX_GIT_REF_REPO_DIR" "${kgitrepo}" "$LINUX_GIT_DIR"
83 # Export the kernel sources from the git repo
84 git_export_linux_sources
() {
86 git archive
"${ktag}" |
tar -x -C "$LINUX_SRCOBJ_DIR"
90 # Upload the tar archive to the object store
91 upload_archive_obj
() {
92 s3cmd
-c "$WORKSPACE/.s3cfg" put
"$WORKSPACE/$obj_name" "$obj_url_prefix/"
93 rm -f "$WORKSPACE/$obj_name"
97 extract_archive_obj
() {
98 tar -xf "$WORKSPACE/$obj_name" -C "$LINUX_OBJ_DIR" -I pbzip2
99 rm -f "$WORKSPACE/$obj_name"
105 tar -cf "$WORKSPACE/$obj_name" -I pbzip2 .
112 IFS
=: read -r -a path_array
<<< "$PATH"
113 while read -r gcc
; do
115 done < <(find "${path_array[@]}" -maxdepth 1 -regex '.*/gcc-[0-9\.]+$' -printf '%f\n' |
sort -t- -k2 -V -r)
119 # Find the most recent GCC version supported by the kernel sources
123 cd "$LINUX_SRCOBJ_DIR"
125 kversion
=$
(make -s kernelversion
)
129 for cc
in $
(list_gccs
) ; do
130 if "${CROSS_COMPILE:-}${cc}" -I include
/ -D__LINUX_COMPILER_H -D__LINUX_COMPILER_TYPES_H -E include
/linux
/compiler-gcc.h
; then
131 cc_version
=$
(echo "${cc}" | cut
-d'-' -f2)
132 if { verlt
"${kversion}" "5.17"; } && { vergt "${cc_version}" "11"; } ; then
133 # Using gcc-12+ with '-Wuse-after-free' breaks the build of older
134 # kernels (in particular, objtool). Some releases on LTS
135 # branches between 4.x and 5.15 can be built with gcc-12.
136 # @see https://lore.kernel.org/lkml/20494.1643237814@turing-police/
137 # @see https://gitlab.com/linux-kernel/stable/-/commit/52a9dab6d892763b2a8334a568bd4e2c1a6fde66
147 # Force gcc-4.8 for kernels before 4.4
148 if { verlt "$kversion" "4.4"; }; then
149 selected_cc='gcc-4.8'
152 if [ "x
$selected_cc" = "x
" ]; then
153 echo "Found no suitable compiler.
"
161 if [ "$selected_cc" != "gcc-4.8
" ]; then
162 # Older kernel Makefiles do not expect the compiler to default to PIE
169 _KCPPFLAGS+=(-fno-pie)
172 selected_cc_version="$
(echo "${selected_cc}" | cut
-d'-' -f2)"
173 if { vergte "${selected_cc_version}" "10"; } && { verlt "${kversion}" "5.10"; } ; then
174 # gcc-10 changed the default from '-fcommon' to '-fno-common', which
175 # causes a linker failure. '-fcommon' can be set on the HOSTCFLAGS
176 # to avoid the issue.
177 # @see https://gitlab.com/linux-kernel/stable/-/commit/e33a814e772cdc36436c8c188d8c42d019fda639
178 _HOSTCFLAGS
+=(-fcommon)
181 if [ "${cross_arch:-}" == "armhf" ] ; then
182 if { verlt
"${kversion}" "5.14"; } ; then
183 # Work-around for producing instructions that aren't valid for the
184 # default architectures.
185 # Eg. Error: selected processor does not support `cpsid i' in ARM mode
186 _KCFLAGS
+=(-march=armv7-a
-mfpu=vfpv3-d16
)
187 _KCPPFLAGS
+=(-march=armv7-a
-mfpu=vfpv3-d16
)
191 if { vergt
"${selected_cc_version}" "8"; } && { vergte "${kversion}" "4.15"; } && { verlt "${kversion}" "4.17"; } ; then
192 # This was added to -Wall in gcc 9 but some kernels do not include the fixes
193 # @see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88583
194 _KCFLAGS+=(-Wno-error=packed-not-aligned)
197 export KAFLAGS="${_KAFLAGS[*]}"
198 export KCFLAGS="${_KCFLAGS[*]}"
199 export KCPPFLAGS="${_KCPPFLAGS[*]}"
200 export HOSTCFLAGS="${_HOSTCFLAGS[*]}"
201 export CC="${CROSS_COMPILE:-}${selected_cc}"
202 export HOSTCC="${selected_cc}"
207 HOSTCFLAGS="${HOSTCFLAGS:-}"
209 if [ -n "${DEBUG}" ] ; then
217 patch_linux_kernel() {
221 git -C "${LINUX_GIT_REF_REPO_DIR}" format-patch -n1 --stdout "${commit_hash}" | patch -p1
223 if [ "$?
" -gt 1 ] ; then
224 echo "Serious issue patching
"
229 build_linux_kernel() {
230 cd "$LINUX_SRCOBJ_DIR"
232 kversion=$(make -s kernelversion "${make_args[@]}")
234 if { verlt "${kversion}" "3.3"; } && [ "${vanilla_config}" = "imx_v6_v7_defconfig
" ] ; then
235 # imx_v6_v7 didn't exist before 06965c39b4c63933fa0a1cde2237ef85477c5655
236 if { verlt "${kversion}" "3.2"; } ; then
237 vanilla_config='mx5_defconfig'
239 vanilla_config='mx51_defconfig'
243 if { verlt "${kversion}" "3.13"; } && [ "${vanilla_config}" = "pseries_le_defconfig
" ] ; then
244 # pseries_le_deconfig was introduced in f53e462e907cbaed29c49c0f10f5b8f614e1bf1d
245 vanilla_config='pseries_defconfig'
248 # Generate kernel configuration
251 if [ "${cross_arch}" = "powerpc
" ]; then
252 if vergte "${kversion}" "4.10"; then
253 echo "Ubuntu removed big endian powerpc configuration from kernel
>= 4.10. Don
't try to build it."
258 # Disable riscv64 config generation, we don't have a toolchain on bionic
259 sed -i 's/riscv64 //' debian.master
/etc
/kernelconfig
261 fakeroot debian
/rules clean KW_DEFCONFIG_DIR
=.
263 # Hack for kernel Ubuntu-hwe-5.8
264 # The debian/control file is produced by the clean target above, so this
265 # check needs to happen afterwards.
266 if [ ! -f "debian/compat" ] && ! grep -q debhelper-compat debian
/control
; then
267 echo "10" > "debian/compat"
270 # genconfigs check can fail in certain cases, eg. when a more recent
271 # compiler exposes kernel configuration flags which aren't set in the
272 # Ubuntu annotations.
273 # In any case, the configuration will be updated with any missing values
274 # later in our build script.
275 fakeroot debian
/rules genconfigs KW_DEFCONFIG_DIR
=. do_skip_checks
=true
276 cp CONFIGS
/"${ubuntu_config}" .config
280 # Force 32bit build on i386, default is 64bit
281 if [ "$arch" = "i386" ]; then
285 make "${vanilla_config}" "${make_args[@]}"
289 if [ "${vanilla_config}" = "pseries_defconfig" ] && [ "${cross_arch}" = "ppc64el" ] ; then
290 # @see diff <(git show v3.13:arch/powerpc/configs/pseries_defconfig) <(git show v3.13:arch/powerpc/configs/pseries_le_defconfig)
291 scripts
/config
--enable CONFIG_CPU_LITTLE_ENDIAN
292 scripts
/config
--enable CONFIG_CMA
293 scripts
/config
--disable CONFIG_XMON_DEFAULT
294 # scripts/config --disable CONFIG_VIRTUALIZATION
295 # scripts/config --disable CONFIG_KVM_BOOK3S_64
296 scripts
/config
--disable CONFIG_KVM_BOOK3S_64_HV
299 # oldnoconfig was renamed in 4.19
300 if vergte
"$kversion" "4.19"; then
301 update_conf_target
="olddefconfig"
303 update_conf_target
="oldnoconfig"
306 # Fix 'defined(@array)' was removed from recent perl
307 if [ -f "kernel/timeconst.pl" ]; then
308 sed -i 's/defined(\@\(.*\))/@\1/' kernel
/timeconst.pl
311 # Fix syntax of inline assembly which is confused with C++11 raw strings on gcc >= 5
312 if [ "$HOSTCC" != "gcc-4.8" ]; then
313 if [ -f "arch/x86/kvm/svm.c" ]; then
314 sed -i 's/ R"/ R "/g; s/"R"/" R "/g' arch
/x86
/kvm
/svm.c
317 if [ -f "arch/x86/kvm/vmx.c" ]; then
318 sed -i 's/ R"/ R "/g; s/"R"/" R "/g' arch
/x86
/kvm
/vmx.c
322 if { verlt
"${kversion}" "5.11"; } && { vergte "${kversion}" "4.10"; } ; then
323 # Binutils > 2.35 strips empty symbol tables, causing obltool to fail
324 # in certain cases when files are empty.
325 # @see https://gitlab.com/linux-kernel/stable/-/commit/1d489151e9f9d1647110277ff77282fe4d96d09b
327 # There doesn't seem to be any LD/AS/AR flags to control this behaviour,
328 # therefore patching tools/objtool/elf.c is attempted.
329 patch_linux_kernel 1d489151e9f9d1647110277ff77282fe4d96d09b
330 if { verlt "${kversion}" "4.18"; } ; then
331 patch_linux_kernel e81e0724432542af8d8c702c31e9d82f57b1ff31
335 if { vergt "${selected_cc_version}" "7"; } && { vergte "${kversion}" "4.15"; } && { verlt "${kversion}" "4.17"; } ; then
336 # Builds fail due to -Werror=restrict in pager.o and str_error_r.o
337 if { verlt
"${kversion}" "4.16"; } ; then
338 # This is patched since objtool's Makefile doesn't respect HOSTCFLAGS
339 # @see https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ad343a98e74e85aa91d844310e797f96fee6983b
340 patch_linux_kernel ad343a98e74e85aa91d844310e797f96fee6983b
342 if { verlt
"${kversion}" "4.17"; } ; then
343 # This is patched since objtool's Makefile doesn't respect HOSTCFLAGS
344 # @see https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=854e55ad289ef8888e7991f0ada85d5846f5afb9
345 patch_linux_kernel
854e55ad289ef8888e7991f0ada85d5846f5afb9
348 # More recent compiler optimizations expose build errors with netronome.
349 # It seems easier to disable the driver than to attempt patching.
350 scripts
/config
--disable CONFIG_NET_VENDOR_NETRONOME
351 scripts
/config
--disable CONFIG_MICREL_PHY
353 # Duplicate decalarations of __force_order
354 # @see https://gitlab.com/linux-kernel/stable/-/commit/df6d4f9db79c1a5d6f48b59db35ccd1e9ff9adfc
355 # However, kaslr_64.c doesn't exit in 4.15, 4.16, it's named pagetable.c
356 if [ -f arch
/x86
/boot
/compressed
/pagetable.c
] ; then
357 sed -i '/^unsigned long __force_order;$/d' arch
/x86
/boot
/compressed
/pagetable.c
361 if { vergte
"${kversion}" "4.15"; } && { verlt "${kversion}" "4.18"; } ; then
362 # Some old kernels fail to build when make is too new
363 # @see https://gitlab.com/linux-kernel/stable/-/commit/9feeb638cde083c737e295c0547f1b4f28e99583
364 patch_linux_kernel 9564a8cf422d7b58f6e857e3546d346fa970191e
365 # @see https://gitlab.com/linux-kernel/stable/-/commit/9feeb638cde083c737e295c0547f1b4f28e99583
366 patch_linux_kernel 9feeb638cde083c737e295c0547f1b4f28e99583
369 if { vergte "${kversion}" "4.12"; } && { verlt "${kversion}" "4.18"; } ; then
370 # Old kernels can fail to build while on newer host kernels
371 # @see https://gitlab.com/linux-kernel/stable/-/commit/dfbd199a7cfe3e3cd8531e1353cdbd7175bfbc5e
373 patch_linux_kernel dfbd199a7cfe3e3cd8531e1353cdbd7175bfbc5e
376 if { vergte
"${kversion}" "3.18"; } && { verlt "${kversion}" "4.4"; } ; then
377 # Compatibility with binutils >= ~ 2.31
378 patch_linux_kernel b21ebf2fb4cde1618915a97cc773e287ff49173e
381 # The above patch only partially applies linux 3.17, and has been, so a
382 # rebased version is used instead.
383 if { vergte "${kversion}" "3.17"; } && { verlt "${kversion}" "3.18"; } ; then
384 cat <<'EOF' | patch -p1
385 diff --git a/arch/x86/kernel/machine_kexec_64.c b/arch/x86/kernel/machine_kexec_64.c
386 index 48598105..0652c5b6 100644
387 --- a/arch/x86/kernel/machine_kexec_64.c
388 +++ b/arch/x86/kernel/machine_kexec_64.c
389 @@ -516,6 +516,7 @@ int arch_kexec_apply_relocations_add(const Elf64_Ehdr *ehdr,
393 + case R_X86_64_PLT32:
394 value -= (u64)address;
395 *(u32 *)location = value;
397 diff --git a/arch/x86/kernel/module.c b/arch/x86/kernel/module.c
398 index e69f9882..7c6bc9fe 100644
399 --- a/arch/x86/kernel/module.c
400 +++ b/arch/x86/kernel/module.c
401 @@ -180,6 +180,7 @@ int apply_relocate_add(Elf64_Shdr *sechdrs,
405 + case R_X86_64_PLT32:
409 diff --git a/arch/x86/tools/relocs.c b/arch/x86/tools/relocs.c
410 index bbb1d225..8deeacbc 100644
411 --- a/arch/x86/tools/relocs.c
412 +++ b/arch/x86/tools/relocs.c
413 @@ -763,6 +763,7 @@ static int do_reloc64(struct section *sec, Elf_Rel *rel, ElfW(Sym) *sym,
417 + case R_X86_64_PLT32:
419 * NONE can be ignored and PC relative relocations don't
420 * need to be adjusted.
424 if ( { vergte
"${kversion}" "3.15"; } && { verlt "${kversion}" "4.4"; } ) ||
425 ( { vergte "${kversion}" "4.15"; } && { verlt "${kversion}" "4.17"; } ); then
426 # While the original motivation of this patch is for fixing builds using
427 # clang, the same error occurs between linux >= 3.15 and < 4.4, and in
430 # This patch only partially applies due to changes in kernel/Makefile,
431 # so a supplementary patch is needed
433 # Without this patch, builds fail with
434 # Cannot find symbol for section 2: .text.
435 # kernel/elfcore.o: failed
437 # @see https://github.com/linuxppc/issues/issues/388
438 # @see https://lore.kernel.org/lkml/20201204165742.3815221-2-arnd@kernel.org/
440 patch_linux_kernel
6e7b64b9dd6d96537d816ea07ec26b7dedd397b9
441 if grep -q elfcore.o kernel
/Makefile
; then
442 sed -i '/^.* += elfcore.o$/d' kernel
/Makefile
446 # Newer binutils don't accept 3 operand 'cmp' instructions on ppc64
447 # Convert them to 'cmpw' which was previously done silently
448 if verlt
"$kversion" "4.9"; then
449 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/"
450 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/"
451 sed -i "s/\$pie \-o \"\$ofile\"/\$pie --no-dynamic-linker -o \"\$ofile\"/" arch
/powerpc
/boot
/wrapper
454 # Fix a typo in v2.6.36.x
455 if [ -f "arch/x86/kernel/entry_64.S" ]; then
456 sed -i 's/END(do_hypervisor_callback)/END(xen_do_hypervisor_callback)/' arch
/x86
/kernel
/entry_64.S
459 # Fix compiler switch in vdso Makefile for 2.6.36 to 2.6.36.2
460 if { vergte
"$kversion" "2.6.36" && verlte
"$kversion" "2.6.36.3"; }; then
461 sed -i 's/-m elf_x86_64/-m64/' arch
/x86
/vdso
/Makefile
462 sed -i 's/-m elf_i386/-m32/' arch
/x86
/vdso
/Makefile
465 # Fix kernel < 3.0 with gcc >= 4.7
466 if verlt
"$kversion" "3.0"; then
467 sed -i '/linux\/compiler.h/a #include <linux\/linkage.h> \/* For asmregparm *\/' arch
/x86
/include
/asm
/ptrace.h
468 sed -i 's/extern long syscall_trace_enter/extern asmregparm long syscall_trace_enter/' arch
/x86
/include
/asm
/ptrace.h
469 sed -i 's/extern void syscall_trace_leave/extern asmregparm void syscall_trace_leave/' arch
/x86
/include
/asm
/ptrace.h
470 echo "header-y += linkage.h" >> include
/linux
/Kbuild
473 if [ "${cross_arch}" = "powerpc" ] ; then
474 if { vergte
"${kversion}" "4.15"; } && { verlt "${kversion}" "4.16"; } ; then
475 # Avoid register errors such as
476 # aes_generic.c:(.text+0x4e0): undefined reference to `_restgpr_31_x'
477 # @see https://gitlab.com/linux-kernel/stable/-/commit/148b974deea927f5dbb6c468af2707b488bfa2de
479 CFLAGS_aes_generic.o=''
485 if [ "$HOSTCC" == "gcc-4.8
" ]; then
486 scripts/config --disable CONFIG_CC_STACKPROTECTOR_STRONG
487 scripts/config --disable CONFIG_PPC_OF_BOOT_TRAMPOLINE
490 # Don't try to sign modules
491 scripts/config --disable CONFIG_MODULE_SIG
493 # Disable kernel stack frame correctness validation, introduced in 4.6.0 and currently fails
494 scripts/config --disable CONFIG_STACK_VALIDATION
496 # Cause problems with inline assembly on i386
497 scripts/config --disable CONFIG_DEBUG_SECTION_MISMATCH
499 # Don't build samples, they are broken on some kernel releases
500 scripts/config --disable CONFIG_SAMPLES
501 scripts/config --disable CONFIG_BUILD_DOCSRC
504 scripts/config --disable CONFIG_KCOV
506 # Broken on some RT kernels
507 scripts/config --disable CONFIG_HYPERV
510 scripts/config --disable CONFIG_RAPIDIO_TSI721
511 scripts/config --disable CONFIG_SGI_XP
512 scripts/config --disable CONFIG_MFD_WM8994
513 scripts/config --disable CONFIG_DRM_RADEON
514 scripts/config --disable CONFIG_SND_SOC_WM5100
516 # IGBVF won't build with recent gcc on 2.6.38.x
517 if { vergte "$kversion" "2.6.37" && verlt "$kversion" "2.6.38"; }; then
518 scripts/config --disable CONFIG_IGBVF
521 # Don't fail the build on warnings
522 scripts/config --disable CONFIG_WERROR
523 scripts/config --enable CONFIG_PPC_DISABLE_WERROR
525 # Set required options
526 scripts/config --enable CONFIG_TRACEPOINTS
527 scripts/config --enable CONFIG_KALLSYMS
528 scripts/config --enable CONFIG_HIGH_RES_TIMERS
529 scripts/config --enable CONFIG_KPROBES
530 scripts/config --enable CONFIG_FTRACE
531 scripts/config --enable CONFIG_BLK_DEV_IO_TRACE
532 scripts/config --enable CONFIG_KALLSYMS_ALL
533 scripts/config --enable CONFIG_HAVE_SYSCALL_TRACEPOINTS
534 scripts/config --enable CONFIG_PERF_EVENTS
535 scripts/config --enable CONFIG_EVENT_TRACING
536 scripts/config --enable CONFIG_KRETPROBES
538 if [ -n "${DEBUG}" ] ; then
542 make "$update_conf_target" "${make_args[@]}"
543 make -j"$NPROC" "${make_args[@]}"
545 krelease=$(make -s kernelrelease "${mark_args[@]}")
547 # Save the kernel and modules
548 mkdir -p "$LINUX_INSTOBJ_DIR/boot
"
549 make INSTALL_MOD_PATH="$LINUX_INSTOBJ_DIR" INSTALL_MOD_STRIP=1 modules_install "${make_args[@]}"
550 make INSTALL_MOD_PATH="$LINUX_INSTOBJ_DIR" INSTALL_PATH="$LINUX_INSTOBJ_DIR/boot
" install "${make_args[@]}"
551 rm -f "$LINUX_INSTOBJ_DIR/lib
/modules
/${krelease}/source" "$LINUX_INSTOBJ_DIR/lib
/modules
/${krelease}/build
"
552 ln -s ../../../../sources "$LINUX_INSTOBJ_DIR/lib
/modules
/${krelease}/source"
553 ln -s ../../../../sources "$LINUX_INSTOBJ_DIR/lib
/modules
/${krelease}/source"
557 extract_distro_headers() {
559 # Enter linux source dir
560 cd "${LINUX_SRCOBJ_DIR}"
563 # For RT kernels, copy version file
564 if [ -s localversion-rt ]; then
565 cp -a localversion-rt "${LINUX_HDROBJ_DIR}"
568 # Copy all Makefile related stuff
569 find . -path './include/*' -prune \
570 -o -path './scripts/*' -prune -o -type f \
571 \( -name 'Makefile*' -o -name 'Kconfig*' -o -name 'Kbuild*' -o \
572 -name '*.sh' -o -name '*.pl' -o -name '*.lds' \) \
573 -print | cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
575 # Copy base scripts and include dirs
576 cp -a scripts include "${LINUX_HDROBJ_DIR}"
579 (find arch -name include -type d -print0 | \
580 xargs -0 -n1 -i: find : -type f) | \
581 cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
584 (find arch -name scripts -type d -print0 | \
585 xargs -0 -n1 -i: find : -type f) | \
586 cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
589 rm -f "${LINUX_HDROBJ_DIR}/scripts
/*.o
"
590 rm -f "${LINUX_HDROBJ_DIR}/scripts
/*/*.o
"
592 # On powerpc 32bits this object is required to link modules
593 if [ "${karch}" = "powerpc
" ]; then
594 if [ "x$
(scripts
/config
-s CONFIG_PPC64
)" = "xy
" ] && vergte "${kversion}" "5.4"; then
597 cp -a --parents arch/powerpc/lib/crtsavres.[So] "${LINUX_HDROBJ_DIR}/"
601 # On arm64 between 4.13 and 1.15 this object is required to build with ftrace support
602 if [ "${karch}" = "arm64
" ]; then
603 if [ -f "arch
/arm64
/kernel
/ftrace-mod.S
" ]; then
604 cp -a --parents arch/arm64/kernel/ftrace-mod.[So] "${LINUX_HDROBJ_DIR}/"
608 # Newer kernels need objtool to build modules when CONFIG_STACK_VALIDATION=y
609 if [ -f tools/objtool/objtool ]; then
610 cp -a --parents tools/objtool/objtool "${LINUX_HDROBJ_DIR}/"
613 if [ -f "arch
/x86
/kernel
/macros.s
" ]; then
614 cp -a --parents arch/x86/kernel/macros.s "${LINUX_HDROBJ_DIR}/"
617 # Copy modules related stuff, if available
618 if [ -s Module.symvers ]; then
619 cp Module.symvers "${LINUX_HDROBJ_DIR}"
622 if [ -s System.map ]; then
623 cp System.map "${LINUX_HDROBJ_DIR}"
626 if [ -s Module.markers ]; then
627 cp Module.markers "${LINUX_HDROBJ_DIR}"
631 cp .config "${LINUX_HDROBJ_DIR}"
633 # Make sure the Makefile and version.h have a matching timestamp so that
634 # external modules can be built
635 if [ -s "${LINUX_HDROBJ_DIR}/include
/generated
/uapi
/linux
/version.h
" ]; then
636 touch -r "${LINUX_HDROBJ_DIR}/Makefile
" "${LINUX_HDROBJ_DIR}/include
/generated
/uapi
/linux
/version.h
"
637 elif [ -s "${LINUX_HDROBJ_DIR}/include
/linux
/version.h
" ]; then
638 touch -r "${LINUX_HDROBJ_DIR}/Makefile
" "${LINUX_HDROBJ_DIR}/include
/linux
/version.h
"
640 echo "Missing version.h
"
643 touch -r "${LINUX_HDROBJ_DIR}/.config
" "${LINUX_HDROBJ_DIR}/include
/generated
/autoconf.h
"
645 # Copy .config to include/config/auto.conf so "make prepare
" is unnecessary.
646 if [ ! -f "${LINUX_HDROBJ_DIR}/include
/config
/auto.conf
" ]; then
647 cp "${LINUX_HDROBJ_DIR}/.config
" "${LINUX_HDROBJ_DIR}/include
/config
/auto.conf
"
650 # Finally clean the object files from the full source tree
653 # And regen the modules support files
654 make modules_prepare "${make_args[@]}"
656 # On powerpc 32bits this object is required to link modules
657 if [ "${karch}" = "powerpc
" ]; then
658 if [ "x$
(scripts
/config
-s CONFIG_PPC64
)" = "xy
" ] && vergte "${kversion}" "5.4"; then
661 make arch/powerpc/lib/crtsavres.o "${make_args[@]}"
665 # On arm64 between 4.13 and 4.15 this object is required to build with ftrace support
666 if [ "${karch}" = "arm64
" ]; then
667 if [ -f "arch
/arm64
/kernel
/ftrace-mod.S
" ]; then
668 make arch/arm64/kernel/ftrace-mod.o "${make_args[@]}"
672 # Version specific tasks
675 # Add Ubuntu ABI number to kernel headers, this is normally done by the packaging code
676 ABINUM="$
(echo "$ktag" |
grep -P -o 'Ubuntu-(lts-)?.*-\K\d+(?=\..*)')"
677 echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> include/generated/utsrelease.h
678 echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> "${LINUX_HDROBJ_DIR}/include/generated/utsrelease.h"
690 kversion
=$
(make -C "$LINUX_HDROBJ_DIR" -s kernelversion
)
692 # Try to catch some compatibility problems by turning some
693 # warnings into errors.
694 #export KCFLAGS="$KCFLAGS -Wall -Werror"
696 # Enter lttng-modules source dir
697 cd "${MODULES_GIT_DIR}"
699 # kernels 3.10 to 3.10.13 and 3.11 to 3.11.2 introduce a deadlock in the
700 # timekeeping subsystem. We want those build to fail.
701 if { vergte
"$kversion" "3.10" && verlte
"$kversion" "3.10.13"; } || \
702 { vergte
"$kversion" "3.11" && verlte
"$kversion" "3.11.2"; }; then
707 KERNELDIR
="${kdir}" make -j"${NPROC}" V=1 "${make_args[@]}"
712 # We expect this build to fail, if it doesn't, fail the job.
713 if [ "$ret" -eq 0 ]; then
714 echo "This build should have failed."
718 # We have to publish at least one file or the build will fail
719 echo "This kernel is broken, there is a deadlock in the timekeeping subsystem." > "${outdir}/BROKEN.txt.ko"
721 KERNELDIR
="${kdir}" make clean
725 # Build modules against full kernel sources
726 KERNELDIR
="${kdir}" make -j"${NPROC}" V=1 "${make_args[@]}"
728 # Install modules to build dir
729 KERNELDIR
="${kdir}" make INSTALL_MOD_PATH
="${outdir}" modules_install
732 KERNELDIR
="${kdir}" make clean
742 MODULES_GIT_DIR
="${WORKSPACE}/src/lttng-modules"
743 LINUX_GIT_DIR
="${WORKSPACE}/src/linux"
745 LINUX_OBJ_DIR
="${WORKSPACE}/linux"
746 LINUX_SRCOBJ_DIR
="${LINUX_OBJ_DIR}/sources"
747 LINUX_HDROBJ_DIR
="${LINUX_OBJ_DIR}/headers"
748 LINUX_INSTOBJ_DIR
="${LINUX_OBJ_DIR}/install"
750 MODULES_OUTPUT_KSRC_DIR
="${WORKSPACE}/build/lttng-modules-ksrc"
751 MODULES_OUTPUT_KHDR_DIR
="${WORKSPACE}/build/lttng-modules-khdr"
753 LINUX_GIT_REF_REPO_DIR
="$HOME/gitcache/linux-stable.git/"
755 OBJ_STORE_URL
="s3://jenkins"
759 # Create build directories
760 mkdir
-p "${LINUX_SRCOBJ_DIR}" "${LINUX_HDROBJ_DIR}" "${LINUX_INSTOBJ_DIR}" "${MODULES_OUTPUT_KSRC_DIR}" "${MODULES_OUTPUT_KHDR_DIR}"
762 git_clone_modules_sources
764 # Setup cross compile env if available
765 if [ "x${cross_arch}" != "x" ]; then
767 case "$cross_arch" in
770 cross_compile
="arm-linux-gnueabihf-"
771 vanilla_config
="imx_v6_v7_defconfig"
772 ubuntu_config
="armhf-config.flavour.generic"
777 cross_compile
="aarch64-linux-gnu-"
778 vanilla_config
="defconfig"
779 ubuntu_config
="arm64-config.flavour.generic"
784 cross_compile
="powerpc-linux-gnu-"
785 vanilla_config
="ppc44x_defconfig"
786 ubuntu_config
="powerpc-config.flavour.powerpc-smp"
791 cross_compile
="powerpc64le-linux-gnu-"
792 vanilla_config
="pseries_le_defconfig"
793 ubuntu_config
="ppc64el-config.flavour.generic"
797 echo "Unsupported cross arch $cross_arch"
802 # Export variables used by Kbuild for cross compilation
803 export ARCH
="${karch}"
804 export CROSS_COMPILE
="${cross_compile}"
806 # Set arch specific values if we are not cross compiling
807 elif [ "x${arch}" != "x" ]; then
812 vanilla_config
="allmodconfig"
813 ubuntu_config
="i386-config.flavour.generic"
818 vanilla_config
="allmodconfig"
819 ubuntu_config
="amd64-config.flavour.generic"
824 vanilla_config
="allmodconfig"
825 ubuntu_config
="armhf-config.flavour.generic"
830 vanilla_config
="allmodconfig"
831 ubuntu_config
="arm64-config.flavour.generic"
836 vanilla_config
="allmodconfig"
837 ubuntu_config
="powerpc-config.flavour.powerpc-smp"
842 vanilla_config
="allmodconfig"
843 ubuntu_config
="ppc64el-config.flavour.generic"
847 echo "Unsupported arch $arch"
852 echo "No arch or cross_arch specified"
858 # First get the kernel build from the object store, or build it, if it's
861 echo "# Setup endpoint
862 host_base = obj.internal.efficios.com
863 host_bucket = obj.internal.efficios.com
864 bucket_location = us-east-1
869 secret_key = echo123456
871 # Enable S3 v4 signature APIs
872 signature_v2 = False" > "$WORKSPACE/.s3cfg"
874 url_hash
="$(echo -n "$kgitrepo" | md5sum | awk '{ print $1 }')"
875 obj_name
="linux.tar.bz2"
877 if [ "x${cross_arch}" = "x" ]; then
878 obj_url_prefix
="$OBJ_STORE_URL/linux-build/$url_hash/$ktag/platform-${platforms}/$arch/native"
880 obj_url_prefix
="$OBJ_STORE_URL/linux-build/$url_hash/$ktag/platform-${platforms}/${cross_arch}"
883 obj_url
="$obj_url_prefix/$obj_name"
886 # In s3cmd 2.3, the return code of get when an object does not exist (64)
887 # is different than in 2.2 (12). The return codes of 's3cmd info' are
888 # consistent between 2.2 and 2.3.
889 s3cmd
-c "$WORKSPACE/.s3cfg" info
"$obj_url"
895 s3cmd
-c "$WORKSPACE/.s3cfg" get
"$obj_url"
900 echo "File not found"
902 # Build all the things and upload
903 # then finish the module build...
905 git_clone_linux_sources
906 git_export_linux_sources
910 ## PREPARE FULL LINUX SOURCE TREE
913 ## EXTRACT DISTRO STYLE KERNEL HEADERS / DEVEL
914 extract_distro_headers
923 echo "Unknown error? Abort"
930 selected_cc_version
="$(echo "${selected_cc}" | cut -d'-' -f2)"
931 # lttng-modules requires gcc >= 5.1 for aarch64
932 # @see https://github.com/lttng/lttng-modules/commit/be06402dbdbea2f3394e60ec15c5d3356e2be416
933 if { verlt
"${selected_cc_version}" "5.1"; } && [ "${cross_arch}" = "arm64" ] ; then
934 echo "Building lltng-modules on aarch64 requires gcc >= 5.1"
939 # Either we downloaded a pre-build kernel or we built it and uploaded
940 # the archive for future builds.
944 # Build modules against full kernel sources
945 build_modules
"${LINUX_SRCOBJ_DIR}" "${MODULES_OUTPUT_KSRC_DIR}"
947 # Build modules against kernel headers
948 build_modules
"${LINUX_HDROBJ_DIR}" "${MODULES_OUTPUT_KHDR_DIR}"
950 # Make sure some modules were actually built
951 tree
"${MODULES_OUTPUT_KSRC_DIR}"
952 if [ "x$(find "${MODULES_OUTPUT_KSRC_DIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then
953 echo "No modules built!"
957 tree
"${MODULES_OUTPUT_KHDR_DIR}"
958 if [ "x$(find "${MODULES_OUTPUT_KHDR_DIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then
959 echo "No modules built!"