| 1 | #!/bin/bash |
| 2 | # |
| 3 | # Copyright (C) 2016-2019 Michael Jeanson <mjeanson@efficios.com> |
| 4 | # |
| 5 | # This program is free software: you can redistribute it and/or modify |
| 6 | # it under the terms of the GNU General Public License as published by |
| 7 | # the Free Software Foundation, either version 3 of the License, or |
| 8 | # (at your option) any later version. |
| 9 | # |
| 10 | # This program is distributed in the hope that it will be useful, |
| 11 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | # GNU General Public License for more details. |
| 14 | # |
| 15 | # You should have received a copy of the GNU General Public License |
| 16 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 17 | |
| 18 | set -exu |
| 19 | |
| 20 | # Parameters |
| 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]}" |
| 28 | else |
| 29 | arch="${platforms:-}" |
| 30 | fi |
| 31 | fi |
| 32 | cross_arch=${cross_arch:-} |
| 33 | ktag=${ktag:-} |
| 34 | kgitrepo=${kgitrepo:-} |
| 35 | mversion=${mversion:-} |
| 36 | mgitrepo=${mgitrepo:-} |
| 37 | |
| 38 | ## FUNCTIONS ## |
| 39 | |
| 40 | # Kernel version compare functions |
| 41 | verlte() { |
| 42 | [ "$1" = "$(printf '%s\n%s' "$1" "$2" | sort -V | head -n1)" ] |
| 43 | } |
| 44 | |
| 45 | verlt() { |
| 46 | # shellcheck disable=SC2015 |
| 47 | [ "$1" = "$2" ] && return 1 || verlte "$1" "$2" |
| 48 | } |
| 49 | |
| 50 | vergte() { |
| 51 | [ "$1" = "$(printf '%s\n%s' "$1" "$2" | sort -V | tail -n1)" ] |
| 52 | } |
| 53 | |
| 54 | vergt() { |
| 55 | # shellcheck disable=SC2015 |
| 56 | [ "$1" = "$2" ] && return 1 || vergte "$1" "$2" |
| 57 | } |
| 58 | |
| 59 | |
| 60 | git_clone_modules_sources() { |
| 61 | mkdir -p "$MODULES_GIT_DIR" |
| 62 | |
| 63 | # If the version starts with "refs/", checkout the specific git ref, otherwise treat it |
| 64 | # as a branch name. |
| 65 | if [ "${mversion:0:5}" = "refs/" ]; then |
| 66 | git clone --no-tags --depth=1 "${mgitrepo}" "$MODULES_GIT_DIR" |
| 67 | (cd "$MODULES_GIT_DIR" && git fetch origin "${mversion}" && git checkout FETCH_HEAD) |
| 68 | else |
| 69 | git clone --no-tags --depth=1 -b "${mversion}" "${mgitrepo}" "$MODULES_GIT_DIR" |
| 70 | fi |
| 71 | } |
| 72 | |
| 73 | # Checkout a shallow kernel tree of the specified tag |
| 74 | git_clone_linux_sources() { |
| 75 | mkdir -p "$LINUX_GIT_DIR" |
| 76 | git clone --depth=1 -b "${ktag}" --reference "$LINUX_GIT_REF_REPO_DIR" "${kgitrepo}" "$LINUX_GIT_DIR" |
| 77 | } |
| 78 | |
| 79 | |
| 80 | # Export the kernel sources from the git repo |
| 81 | git_export_linux_sources() { |
| 82 | cd "$LINUX_GIT_DIR" |
| 83 | git archive "${ktag}" | tar -x -C "$LINUX_SRCOBJ_DIR" |
| 84 | } |
| 85 | |
| 86 | |
| 87 | # Upload the tar archive to the object store |
| 88 | upload_archive_obj() { |
| 89 | s3cmd -c "$WORKSPACE/.s3cfg" put "$WORKSPACE/$obj_name" "$obj_url_prefix/" |
| 90 | rm -f "$WORKSPACE/$obj_name" |
| 91 | } |
| 92 | |
| 93 | |
| 94 | extract_archive_obj() { |
| 95 | tar -xf "$WORKSPACE/$obj_name" -C "$LINUX_OBJ_DIR" |
| 96 | rm -f "$WORKSPACE/$obj_name" |
| 97 | } |
| 98 | |
| 99 | |
| 100 | tar_archive_obj() { |
| 101 | cd "$LINUX_OBJ_DIR" |
| 102 | tar -cf "$WORKSPACE/$obj_name" -I pbzip2 . |
| 103 | cd - |
| 104 | } |
| 105 | |
| 106 | list_gccs() { |
| 107 | local gccs |
| 108 | gccs=() |
| 109 | IFS=: read -r -a path_array <<< "$PATH" |
| 110 | while read -r gcc ; do |
| 111 | gccs+=("$gcc") |
| 112 | done < <(find "${path_array[@]}" -maxdepth 1 -regex '.*/gcc-[0-9\.]+$' -printf '%f\n' | sort -t- -k2 -V -r) |
| 113 | echo "${gccs[@]}" |
| 114 | } |
| 115 | |
| 116 | # Find the most recent GCC version supported by the kernel sources |
| 117 | select_compiler() { |
| 118 | local selected_cc |
| 119 | |
| 120 | cd "$LINUX_SRCOBJ_DIR" |
| 121 | |
| 122 | kversion=$(make -s kernelversion) |
| 123 | |
| 124 | set +e |
| 125 | |
| 126 | for cc in $(list_gccs) ; do |
| 127 | if "${CROSS_COMPILE:-}${cc}" -I include/ -D__LINUX_COMPILER_H -D__LINUX_COMPILER_TYPES_H -E include/linux/compiler-gcc.h; then |
| 128 | selected_cc="$cc" |
| 129 | break |
| 130 | fi |
| 131 | done |
| 132 | |
| 133 | set -e |
| 134 | |
| 135 | if [ "x$selected_cc" = "x" ]; then |
| 136 | echo "Found no suitable compiler." |
| 137 | exit 1 |
| 138 | fi |
| 139 | |
| 140 | # Force gcc-4.8 for kernels before 3.18 |
| 141 | if { verlt "$kversion" "3.18"; }; then |
| 142 | selected_cc=gcc-4.8 |
| 143 | fi |
| 144 | |
| 145 | if [ "$selected_cc" != "gcc-4.8" ]; then |
| 146 | # Older kernel Makefiles do not expect the compiler to default to PIE |
| 147 | KAFLAGS="-fno-pie" |
| 148 | KCFLAGS="-fno-pie -no-pie -fno-stack-protector" |
| 149 | KCPPFLAGS="-fno-pie" |
| 150 | export KAFLAGS KCFLAGS KCPPFLAGS |
| 151 | fi |
| 152 | |
| 153 | export CC="${CROSS_COMPILE:-}${selected_cc}" |
| 154 | export HOSTCC="${selected_cc}" |
| 155 | |
| 156 | cd - |
| 157 | } |
| 158 | |
| 159 | |
| 160 | build_linux_kernel() { |
| 161 | cd "$LINUX_SRCOBJ_DIR" |
| 162 | |
| 163 | kversion=$(make -s kernelversion) |
| 164 | |
| 165 | # Generate kernel configuration |
| 166 | case "$ktag" in |
| 167 | Ubuntu*) |
| 168 | if [ "${cross_arch}" = "powerpc" ]; then |
| 169 | if vergte "${kversion}" "4.10"; then |
| 170 | echo "Ubuntu removed big endian powerpc configuration from kernel >= 4.10. Don't try to build it." |
| 171 | exit 0 |
| 172 | fi |
| 173 | fi |
| 174 | |
| 175 | # Disable riscv64 config generation, we don't have a toolchain on bionic |
| 176 | sed -i 's/riscv64 //' debian.master/etc/kernelconfig |
| 177 | |
| 178 | fakeroot debian/rules clean KW_DEFCONFIG_DIR=. |
| 179 | |
| 180 | # Hack for kernel Ubuntu-hwe-5.8 |
| 181 | # The debian/control file is produced by the clean target above, so this |
| 182 | # check needs to happen afterwards. |
| 183 | if [ ! -f "debian/compat" ] && ! grep -q debhelper-compat debian/control; then |
| 184 | echo "10" > "debian/compat" |
| 185 | fi |
| 186 | |
| 187 | # genconfigs check can fail in certain cases, eg. when a more recent |
| 188 | # compiler exposes kernel configuration flags which aren't set in the |
| 189 | # Ubuntu annotations. |
| 190 | # In any case, the configuration will be updated with any missing values |
| 191 | # later in our build script. |
| 192 | fakeroot debian/rules genconfigs KW_DEFCONFIG_DIR=. do_skip_checks=true |
| 193 | cp CONFIGS/"${ubuntu_config}" .config |
| 194 | ;; |
| 195 | |
| 196 | *) |
| 197 | # Force 32bit build on i386, default is 64bit |
| 198 | if [ "$arch" = "i386" ]; then |
| 199 | export ARCH="i386" |
| 200 | fi |
| 201 | |
| 202 | # allyesconfig is mostly broken for kernels of the 2.6 series |
| 203 | if verlt "$kversion" "3.0"; then |
| 204 | vanilla_config="defconfig" |
| 205 | fi |
| 206 | |
| 207 | make "${vanilla_config}" |
| 208 | ;; |
| 209 | esac |
| 210 | |
| 211 | # oldnoconfig was renamed in 4.19 |
| 212 | if vergte "$kversion" "4.19"; then |
| 213 | update_conf_target="olddefconfig" |
| 214 | else |
| 215 | update_conf_target="oldnoconfig" |
| 216 | fi |
| 217 | |
| 218 | # Fix 'defined(@array)' was removed from recent perl |
| 219 | if [ -f "kernel/timeconst.pl" ]; then |
| 220 | sed -i 's/defined(\@\(.*\))/@\1/' kernel/timeconst.pl |
| 221 | fi |
| 222 | |
| 223 | # Fix syntax of inline assembly which is confused with C++11 raw strings on gcc >= 5 |
| 224 | if [ "$HOSTCC" != "gcc-4.8" ]; then |
| 225 | if [ -f "arch/x86/kvm/svm.c" ]; then |
| 226 | sed -i 's/ R"/ R "/g; s/"R"/" R "/g' arch/x86/kvm/svm.c |
| 227 | fi |
| 228 | |
| 229 | if [ -f "arch/x86/kvm/vmx.c" ]; then |
| 230 | sed -i 's/ R"/ R "/g; s/"R"/" R "/g' arch/x86/kvm/vmx.c |
| 231 | fi |
| 232 | fi |
| 233 | |
| 234 | # Newer binutils don't accept 3 operand 'cmp' instructions on ppc64 |
| 235 | # Convert them to 'cmpw' which was previously done silently |
| 236 | if verlt "$kversion" "4.9"; then |
| 237 | 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/" |
| 238 | 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/" |
| 239 | sed -i "s/\$pie \-o \"\$ofile\"/\$pie --no-dynamic-linker -o \"\$ofile\"/" arch/powerpc/boot/wrapper |
| 240 | fi |
| 241 | |
| 242 | # Fix a typo in v2.6.36.x |
| 243 | if [ -f "arch/x86/kernel/entry_64.S" ]; then |
| 244 | sed -i 's/END(do_hypervisor_callback)/END(xen_do_hypervisor_callback)/' arch/x86/kernel/entry_64.S |
| 245 | fi |
| 246 | |
| 247 | # Fix compiler switch in vdso Makefile for 2.6.36 to 2.6.36.2 |
| 248 | if { vergte "$kversion" "2.6.36" && verlte "$kversion" "2.6.36.3"; }; then |
| 249 | sed -i 's/-m elf_x86_64/-m64/' arch/x86/vdso/Makefile |
| 250 | sed -i 's/-m elf_i386/-m32/' arch/x86/vdso/Makefile |
| 251 | fi |
| 252 | |
| 253 | # Fix kernel < 3.0 with gcc >= 4.7 |
| 254 | if verlt "$kversion" "3.0"; then |
| 255 | sed -i '/linux\/compiler.h/a #include <linux\/linkage.h> \/* For asmregparm *\/' arch/x86/include/asm/ptrace.h |
| 256 | sed -i 's/extern long syscall_trace_enter/extern asmregparm long syscall_trace_enter/' arch/x86/include/asm/ptrace.h |
| 257 | sed -i 's/extern void syscall_trace_leave/extern asmregparm void syscall_trace_leave/' arch/x86/include/asm/ptrace.h |
| 258 | echo "header-y += linkage.h" >> include/linux/Kbuild |
| 259 | fi |
| 260 | |
| 261 | # GCC 4.8 |
| 262 | if [ "$HOSTCC" == "gcc-4.8" ]; then |
| 263 | scripts/config --disable CONFIG_CC_STACKPROTECTOR_STRONG |
| 264 | fi |
| 265 | |
| 266 | # Don't try to sign modules |
| 267 | scripts/config --disable CONFIG_MODULE_SIG |
| 268 | |
| 269 | # Disable kernel stack frame correctness validation, introduced in 4.6.0 and currently fails |
| 270 | scripts/config --disable CONFIG_STACK_VALIDATION |
| 271 | |
| 272 | # Cause problems with inline assembly on i386 |
| 273 | scripts/config --disable CONFIG_DEBUG_SECTION_MISMATCH |
| 274 | |
| 275 | # Don't build samples, they are broken on some kernel releases |
| 276 | scripts/config --disable CONFIG_SAMPLES |
| 277 | scripts/config --disable CONFIG_BUILD_DOCSRC |
| 278 | |
| 279 | # Disable kcov |
| 280 | scripts/config --disable CONFIG_KCOV |
| 281 | |
| 282 | # Broken on some RT kernels |
| 283 | scripts/config --disable CONFIG_HYPERV |
| 284 | |
| 285 | # Broken drivers |
| 286 | scripts/config --disable CONFIG_RAPIDIO_TSI721 |
| 287 | scripts/config --disable CONFIG_SGI_XP |
| 288 | scripts/config --disable CONFIG_MFD_WM8994 |
| 289 | scripts/config --disable CONFIG_DRM_RADEON |
| 290 | scripts/config --disable CONFIG_SND_SOC_WM5100 |
| 291 | |
| 292 | # IGBVF won't build with recent gcc on 2.6.38.x |
| 293 | if { vergte "$kversion" "2.6.37" && verlt "$kversion" "2.6.38"; }; then |
| 294 | scripts/config --disable CONFIG_IGBVF |
| 295 | fi |
| 296 | |
| 297 | # Don't fail the build on warnings |
| 298 | scripts/config --disable CONFIG_WERROR |
| 299 | |
| 300 | # Set required options |
| 301 | scripts/config --enable CONFIG_TRACEPOINTS |
| 302 | scripts/config --enable CONFIG_KALLSYMS |
| 303 | scripts/config --enable CONFIG_HIGH_RES_TIMERS |
| 304 | scripts/config --enable CONFIG_KPROBES |
| 305 | scripts/config --enable CONFIG_FTRACE |
| 306 | scripts/config --enable CONFIG_BLK_DEV_IO_TRACE |
| 307 | scripts/config --enable CONFIG_KALLSYMS_ALL |
| 308 | scripts/config --enable CONFIG_HAVE_SYSCALL_TRACEPOINTS |
| 309 | scripts/config --enable CONFIG_PERF_EVENTS |
| 310 | scripts/config --enable CONFIG_EVENT_TRACING |
| 311 | scripts/config --enable CONFIG_KRETPROBES |
| 312 | |
| 313 | # FIXME: disable objtool on vmlinux, it OOMs on allyesconfig |
| 314 | sed -i 's/objtool_link vmlinux.o//' scripts/link-vmlinux.sh || true |
| 315 | # Starting with v6.1-rc6 |
| 316 | sed -i 's/^objtool-enabled := .*/objtool-enabled := /' scripts/Makefile.vmlinux_o || true |
| 317 | |
| 318 | # Disable SORTTAB |
| 319 | sed -i 's/is_enabled CONFIG_BUILDTIME_TABLE_SORT/is_enabled CONFIG_NONEXISTANT/' scripts/link-vmlinux.sh || true |
| 320 | |
| 321 | # Debug |
| 322 | #cat .config |
| 323 | |
| 324 | make "$update_conf_target" CC="$CC" |
| 325 | make -j"$NPROC" CC="$CC" |
| 326 | |
| 327 | krelease=$(make -s kernelrelease CC="$CC") |
| 328 | |
| 329 | # Save the kernel and modules |
| 330 | mkdir -p "$LINUX_INSTOBJ_DIR/boot" |
| 331 | make INSTALL_MOD_PATH="$LINUX_INSTOBJ_DIR" INSTALL_MOD_STRIP=1 modules_install CC="$CC" |
| 332 | make INSTALL_MOD_PATH="$LINUX_INSTOBJ_DIR" INSTALL_PATH="$LINUX_INSTOBJ_DIR/boot" install CC="$CC" |
| 333 | rm -f "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source" "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/build" |
| 334 | ln -s ../../../../sources "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source" |
| 335 | ln -s ../../../../sources "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source" |
| 336 | } |
| 337 | |
| 338 | |
| 339 | extract_distro_headers() { |
| 340 | |
| 341 | # Enter linux source dir |
| 342 | cd "${LINUX_SRCOBJ_DIR}" |
| 343 | |
| 344 | |
| 345 | # For RT kernels, copy version file |
| 346 | if [ -s localversion-rt ]; then |
| 347 | cp -a localversion-rt "${LINUX_HDROBJ_DIR}" |
| 348 | fi |
| 349 | |
| 350 | # Copy all Makefile related stuff |
| 351 | find . -path './include/*' -prune \ |
| 352 | -o -path './scripts/*' -prune -o -type f \ |
| 353 | \( -name 'Makefile*' -o -name 'Kconfig*' -o -name 'Kbuild*' -o \ |
| 354 | -name '*.sh' -o -name '*.pl' -o -name '*.lds' \) \ |
| 355 | -print | cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}" |
| 356 | |
| 357 | # Copy base scripts and include dirs |
| 358 | cp -a scripts include "${LINUX_HDROBJ_DIR}" |
| 359 | |
| 360 | # Copy arch includes |
| 361 | (find arch -name include -type d -print0 | \ |
| 362 | xargs -0 -n1 -i: find : -type f) | \ |
| 363 | cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}" |
| 364 | |
| 365 | # Copy arch scripts |
| 366 | (find arch -name scripts -type d -print0 | \ |
| 367 | xargs -0 -n1 -i: find : -type f) | \ |
| 368 | cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}" |
| 369 | |
| 370 | # Cleanup scripts |
| 371 | rm -f "${LINUX_HDROBJ_DIR}/scripts/*.o" |
| 372 | rm -f "${LINUX_HDROBJ_DIR}/scripts/*/*.o" |
| 373 | |
| 374 | # On powerpc 32bits this object is required to link modules |
| 375 | if [ "${karch}" = "powerpc" ]; then |
| 376 | if [ "x$(scripts/config -s CONFIG_PPC64)" = "xy" ] && vergte "${kversion}" "5.4"; then |
| 377 | : |
| 378 | else |
| 379 | cp -a --parents arch/powerpc/lib/crtsavres.[So] "${LINUX_HDROBJ_DIR}/" |
| 380 | fi |
| 381 | fi |
| 382 | |
| 383 | # On arm64 between 4.13 and 1.15 this object is required to build with ftrace support |
| 384 | if [ "${karch}" = "arm64" ]; then |
| 385 | if [ -f "arch/arm64/kernel/ftrace-mod.S" ]; then |
| 386 | cp -a --parents arch/arm64/kernel/ftrace-mod.[So] "${LINUX_HDROBJ_DIR}/" |
| 387 | fi |
| 388 | fi |
| 389 | |
| 390 | # Newer kernels need objtool to build modules when CONFIG_STACK_VALIDATION=y |
| 391 | if [ -f tools/objtool/objtool ]; then |
| 392 | cp -a --parents tools/objtool/objtool "${LINUX_HDROBJ_DIR}/" |
| 393 | fi |
| 394 | |
| 395 | if [ -f "arch/x86/kernel/macros.s" ]; then |
| 396 | cp -a --parents arch/x86/kernel/macros.s "${LINUX_HDROBJ_DIR}/" |
| 397 | fi |
| 398 | |
| 399 | # Copy modules related stuff, if available |
| 400 | if [ -s Module.symvers ]; then |
| 401 | cp Module.symvers "${LINUX_HDROBJ_DIR}" |
| 402 | fi |
| 403 | |
| 404 | if [ -s System.map ]; then |
| 405 | cp System.map "${LINUX_HDROBJ_DIR}" |
| 406 | fi |
| 407 | |
| 408 | if [ -s Module.markers ]; then |
| 409 | cp Module.markers "${LINUX_HDROBJ_DIR}" |
| 410 | fi |
| 411 | |
| 412 | # Copy config file |
| 413 | cp .config "${LINUX_HDROBJ_DIR}" |
| 414 | |
| 415 | # Make sure the Makefile and version.h have a matching timestamp so that |
| 416 | # external modules can be built |
| 417 | if [ -s "${LINUX_HDROBJ_DIR}/include/generated/uapi/linux/version.h" ]; then |
| 418 | touch -r "${LINUX_HDROBJ_DIR}/Makefile" "${LINUX_HDROBJ_DIR}/include/generated/uapi/linux/version.h" |
| 419 | elif [ -s "${LINUX_HDROBJ_DIR}/include/linux/version.h" ]; then |
| 420 | touch -r "${LINUX_HDROBJ_DIR}/Makefile" "${LINUX_HDROBJ_DIR}/include/linux/version.h" |
| 421 | else |
| 422 | echo "Missing version.h" |
| 423 | exit 1 |
| 424 | fi |
| 425 | touch -r "${LINUX_HDROBJ_DIR}/.config" "${LINUX_HDROBJ_DIR}/include/generated/autoconf.h" |
| 426 | |
| 427 | # Copy .config to include/config/auto.conf so "make prepare" is unnecessary. |
| 428 | if [ ! -f "${LINUX_HDROBJ_DIR}/include/config/auto.conf" ]; then |
| 429 | cp "${LINUX_HDROBJ_DIR}/.config" "${LINUX_HDROBJ_DIR}/include/config/auto.conf" |
| 430 | fi |
| 431 | |
| 432 | # Finally clean the object files from the full source tree |
| 433 | make clean |
| 434 | |
| 435 | # And regen the modules support files |
| 436 | make modules_prepare CC="$CC" |
| 437 | |
| 438 | # On powerpc 32bits this object is required to link modules |
| 439 | if [ "${karch}" = "powerpc" ]; then |
| 440 | if [ "x$(scripts/config -s CONFIG_PPC64)" = "xy" ] && vergte "${kversion}" "5.4"; then |
| 441 | : |
| 442 | else |
| 443 | make arch/powerpc/lib/crtsavres.o CC="$CC" |
| 444 | fi |
| 445 | fi |
| 446 | |
| 447 | # On arm64 between 4.13 and 4.15 this object is required to build with ftrace support |
| 448 | if [ "${karch}" = "arm64" ]; then |
| 449 | if [ -f "arch/arm64/kernel/ftrace-mod.S" ]; then |
| 450 | make arch/arm64/kernel/ftrace-mod.o CC="$CC" |
| 451 | fi |
| 452 | fi |
| 453 | |
| 454 | # Version specific tasks |
| 455 | case "$ktag" in |
| 456 | Ubuntu*) |
| 457 | # Add Ubuntu ABI number to kernel headers, this is normally done by the packaging code |
| 458 | ABINUM="$(echo "$ktag" | grep -P -o 'Ubuntu-(lts-)?.*-\K\d+(?=\..*)')" |
| 459 | echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> include/generated/utsrelease.h |
| 460 | echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> "${LINUX_HDROBJ_DIR}/include/generated/utsrelease.h" |
| 461 | ;; |
| 462 | esac |
| 463 | } |
| 464 | |
| 465 | |
| 466 | build_modules() { |
| 467 | |
| 468 | local kdir="$1" |
| 469 | local outdir="$2" |
| 470 | local kversion |
| 471 | |
| 472 | kversion=$(make -C "$LINUX_HDROBJ_DIR" -s kernelversion) |
| 473 | |
| 474 | # Try to catch some compatibility problems by turning some |
| 475 | # warnings into errors. |
| 476 | #export KCFLAGS="$KCFLAGS -Wall -Werror" |
| 477 | |
| 478 | # Enter lttng-modules source dir |
| 479 | cd "${MODULES_GIT_DIR}" |
| 480 | |
| 481 | # kernels 3.10 to 3.10.13 and 3.11 to 3.11.2 introduce a deadlock in the |
| 482 | # timekeeping subsystem. We want those build to fail. |
| 483 | if { vergte "$kversion" "3.10" && verlte "$kversion" "3.10.13"; } || \ |
| 484 | { vergte "$kversion" "3.11" && verlte "$kversion" "3.11.2"; }; then |
| 485 | |
| 486 | set +e |
| 487 | |
| 488 | # Build modules |
| 489 | KERNELDIR="${kdir}" make -j"${NPROC}" V=1 CC="$CC" |
| 490 | ret=$? |
| 491 | |
| 492 | set -e |
| 493 | |
| 494 | # We expect this build to fail, if it doesn't, fail the job. |
| 495 | if [ "$ret" -eq 0 ]; then |
| 496 | echo "This build should have failed." |
| 497 | exit 1 |
| 498 | fi |
| 499 | |
| 500 | # We have to publish at least one file or the build will fail |
| 501 | echo "This kernel is broken, there is a deadlock in the timekeeping subsystem." > "${outdir}/BROKEN.txt.ko" |
| 502 | |
| 503 | KERNELDIR="${kdir}" make clean |
| 504 | |
| 505 | else # Regular build |
| 506 | |
| 507 | # Build modules against full kernel sources |
| 508 | KERNELDIR="${kdir}" make -j"${NPROC}" V=1 CC="$CC" |
| 509 | |
| 510 | # Install modules to build dir |
| 511 | KERNELDIR="${kdir}" make INSTALL_MOD_PATH="${outdir}" modules_install |
| 512 | |
| 513 | # Clean build dir |
| 514 | KERNELDIR="${kdir}" make clean |
| 515 | fi |
| 516 | } |
| 517 | |
| 518 | |
| 519 | ## MAIN ## |
| 520 | |
| 521 | # Use all CPU cores |
| 522 | NPROC=$(nproc) |
| 523 | |
| 524 | MODULES_GIT_DIR="${WORKSPACE}/src/lttng-modules" |
| 525 | LINUX_GIT_DIR="${WORKSPACE}/src/linux" |
| 526 | |
| 527 | LINUX_OBJ_DIR="${WORKSPACE}/linux" |
| 528 | LINUX_SRCOBJ_DIR="${LINUX_OBJ_DIR}/sources" |
| 529 | LINUX_HDROBJ_DIR="${LINUX_OBJ_DIR}/headers" |
| 530 | LINUX_INSTOBJ_DIR="${LINUX_OBJ_DIR}/install" |
| 531 | |
| 532 | MODULES_OUTPUT_KSRC_DIR="${WORKSPACE}/build/lttng-modules-ksrc" |
| 533 | MODULES_OUTPUT_KHDR_DIR="${WORKSPACE}/build/lttng-modules-khdr" |
| 534 | |
| 535 | LINUX_GIT_REF_REPO_DIR="$HOME/gitcache/linux-stable.git/" |
| 536 | |
| 537 | OBJ_STORE_URL="s3://jenkins" |
| 538 | |
| 539 | cd "$WORKSPACE" |
| 540 | |
| 541 | # Create build directories |
| 542 | mkdir -p "${LINUX_SRCOBJ_DIR}" "${LINUX_HDROBJ_DIR}" "${LINUX_INSTOBJ_DIR}" "${MODULES_OUTPUT_KSRC_DIR}" "${MODULES_OUTPUT_KHDR_DIR}" |
| 543 | |
| 544 | git_clone_modules_sources |
| 545 | |
| 546 | # Setup cross compile env if available |
| 547 | if [ "x${cross_arch}" != "x" ]; then |
| 548 | |
| 549 | case "$cross_arch" in |
| 550 | "armhf") |
| 551 | karch="arm" |
| 552 | cross_compile="arm-linux-gnueabihf-" |
| 553 | vanilla_config="imx_v6_v7_defconfig" |
| 554 | ubuntu_config="armhf-config.flavour.generic" |
| 555 | ;; |
| 556 | |
| 557 | "arm64") |
| 558 | karch="arm64" |
| 559 | cross_compile="aarch64-linux-gnu-" |
| 560 | vanilla_config="defconfig" |
| 561 | ubuntu_config="arm64-config.flavour.generic" |
| 562 | ;; |
| 563 | |
| 564 | "powerpc") |
| 565 | karch="powerpc" |
| 566 | cross_compile="powerpc-linux-gnu-" |
| 567 | vanilla_config="ppc44x_defconfig" |
| 568 | ubuntu_config="powerpc-config.flavour.powerpc-smp" |
| 569 | ;; |
| 570 | |
| 571 | "ppc64el") |
| 572 | karch="powerpc" |
| 573 | cross_compile="powerpc64le-linux-gnu-" |
| 574 | vanilla_config="pseries_le_defconfig" |
| 575 | ubuntu_config="ppc64el-config.flavour.generic" |
| 576 | ;; |
| 577 | |
| 578 | *) |
| 579 | echo "Unsupported cross arch $cross_arch" |
| 580 | exit 1 |
| 581 | ;; |
| 582 | esac |
| 583 | |
| 584 | # Export variables used by Kbuild for cross compilation |
| 585 | export ARCH="${karch}" |
| 586 | export CROSS_COMPILE="${cross_compile}" |
| 587 | |
| 588 | # Set arch specific values if we are not cross compiling |
| 589 | elif [ "x${arch}" != "x" ]; then |
| 590 | |
| 591 | case "$arch" in |
| 592 | "i386") |
| 593 | karch="x86" |
| 594 | vanilla_config="allyesconfig" |
| 595 | ubuntu_config="i386-config.flavour.generic" |
| 596 | ;; |
| 597 | |
| 598 | "amd64") |
| 599 | karch="x86" |
| 600 | vanilla_config="allyesconfig" |
| 601 | ubuntu_config="amd64-config.flavour.generic" |
| 602 | ;; |
| 603 | |
| 604 | "armhf") |
| 605 | karch="arm" |
| 606 | vanilla_config="allyesconfig" |
| 607 | ubuntu_config="armhf-config.flavour.generic" |
| 608 | ;; |
| 609 | |
| 610 | "arm64") |
| 611 | karch="arm64" |
| 612 | vanilla_config="allyesconfig" |
| 613 | ubuntu_config="arm64-config.flavour.generic" |
| 614 | ;; |
| 615 | |
| 616 | "powerpc") |
| 617 | karch="powerpc" |
| 618 | vanilla_config="allyesconfig" |
| 619 | ubuntu_config="powerpc-config.flavour.powerpc-smp" |
| 620 | ;; |
| 621 | |
| 622 | "ppc64el") |
| 623 | karch="powerpc" |
| 624 | vanilla_config="allyesconfig" |
| 625 | ubuntu_config="ppc64el-config.flavour.generic" |
| 626 | ;; |
| 627 | |
| 628 | *) |
| 629 | echo "Unsupported arch $arch" |
| 630 | exit 1 |
| 631 | ;; |
| 632 | esac |
| 633 | else |
| 634 | echo "No arch or cross_arch specified" |
| 635 | exit 1 |
| 636 | fi |
| 637 | |
| 638 | |
| 639 | |
| 640 | # First get the kernel build from the object store, or build it, if it's |
| 641 | # not available. |
| 642 | |
| 643 | echo "# Setup endpoint |
| 644 | host_base = obj.internal.efficios.com |
| 645 | host_bucket = obj.internal.efficios.com |
| 646 | bucket_location = us-east-1 |
| 647 | use_https = True |
| 648 | |
| 649 | # Setup access keys |
| 650 | access_key = jenkins |
| 651 | secret_key = echo123456 |
| 652 | |
| 653 | # Enable S3 v4 signature APIs |
| 654 | signature_v2 = False" > "$WORKSPACE/.s3cfg" |
| 655 | |
| 656 | url_hash="$(echo -n "$kgitrepo" | md5sum | awk '{ print $1 }')" |
| 657 | obj_name="linux.tar.bz2" |
| 658 | |
| 659 | if [ "x${cross_arch}" = "x" ]; then |
| 660 | obj_url_prefix="$OBJ_STORE_URL/linux-build/$url_hash/$ktag/platform-${platform}/$arch/native" |
| 661 | else |
| 662 | obj_url_prefix="$OBJ_STORE_URL/linux-build/$url_hash/$ktag/platform-${platform}/${cross_arch}" |
| 663 | fi |
| 664 | |
| 665 | obj_url="$obj_url_prefix/$obj_name" |
| 666 | |
| 667 | set +e |
| 668 | # In s3cmd 2.3, the return code of get when an object does not exist (64) |
| 669 | # is different than in 2.2 (12). The return codes of 's3cmd info' are |
| 670 | # consistent between 2.2 and 2.3. |
| 671 | s3cmd -c "$WORKSPACE/.s3cfg" info "$obj_url" |
| 672 | ret=$? |
| 673 | set -e |
| 674 | |
| 675 | case "$ret" in |
| 676 | "0") |
| 677 | s3cmd -c "$WORKSPACE/.s3cfg" get "$obj_url" |
| 678 | extract_archive_obj |
| 679 | ;; |
| 680 | |
| 681 | "12") |
| 682 | echo "File not found" |
| 683 | |
| 684 | # Build all the things and upload |
| 685 | # then finish the module build... |
| 686 | |
| 687 | git_clone_linux_sources |
| 688 | git_export_linux_sources |
| 689 | |
| 690 | select_compiler |
| 691 | |
| 692 | ## PREPARE FULL LINUX SOURCE TREE |
| 693 | build_linux_kernel |
| 694 | |
| 695 | ## EXTRACT DISTRO STYLE KERNEL HEADERS / DEVEL |
| 696 | extract_distro_headers |
| 697 | |
| 698 | tar_archive_obj |
| 699 | |
| 700 | upload_archive_obj |
| 701 | |
| 702 | ;; |
| 703 | |
| 704 | *) |
| 705 | echo "Unknown error? Abort" |
| 706 | exit 1 |
| 707 | ;; |
| 708 | esac |
| 709 | |
| 710 | select_compiler |
| 711 | |
| 712 | ## BUILD modules |
| 713 | # Either we downloaded a pre-build kernel or we built it and uploaded |
| 714 | # the archive for future builds. |
| 715 | |
| 716 | cd "$WORKSPACE" |
| 717 | |
| 718 | # Build modules against full kernel sources |
| 719 | build_modules "${LINUX_SRCOBJ_DIR}" "${MODULES_OUTPUT_KSRC_DIR}" |
| 720 | |
| 721 | # Build modules against kernel headers |
| 722 | build_modules "${LINUX_HDROBJ_DIR}" "${MODULES_OUTPUT_KHDR_DIR}" |
| 723 | |
| 724 | # Make sure some modules were actually built |
| 725 | tree "${MODULES_OUTPUT_KSRC_DIR}" |
| 726 | if [ "x$(find "${MODULES_OUTPUT_KSRC_DIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then |
| 727 | echo "No modules built!" |
| 728 | exit 1 |
| 729 | fi |
| 730 | |
| 731 | tree "${MODULES_OUTPUT_KHDR_DIR}" |
| 732 | if [ "x$(find "${MODULES_OUTPUT_KHDR_DIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then |
| 733 | echo "No modules built!" |
| 734 | exit 1 |
| 735 | fi |
| 736 | |
| 737 | # EOF |