scripts/lttng-modules/param-build.sh

   1 #!/bin/bash -exu
   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 # Parameters
  19 arch=${arch:-}
  20 cross_arch=${cross_arch:-}
  21 ktag=${ktag:-}
  22 kgitrepo=${kgitrepo:-}
  23 mversion=${mversion:-}
  24 mgitrepo=${mgitrepo:-}
  25
  26
  27 ## FUNCTIONS ##
  28
  29 # Kernel version compare functions
  30 verlte() {
  31     [  "$1" = "$(printf '%s\n%s' "$1" "$2" | sort -V | head -n1)" ]
  32 }
  33
  34 verlt() {
  35     # shellcheck disable=SC2015
  36     [ "$1" = "$2" ] && return 1 || verlte "$1" "$2"
  37 }
  38
  39 vergte() {
  40     [  "$1" = "$(printf '%s\n%s' "$1" "$2" | sort -V | tail -n1)" ]
  41 }
  42
  43 vergt() {
  44     # shellcheck disable=SC2015
  45     [ "$1" = "$2" ] && return 1 || vergte "$1" "$2"
  46 }
  47
  48
  49 git_clone_modules_sources() {
  50     mkdir -p "$MODULES_GIT_DIR"
  51
  52     # If the version starts with "refs/", checkout the specific git ref, otherwise treat it
  53     # as a branch name.
  54     if [ "${mversion:0:5}" = "refs/" ]; then
  55         git clone --no-tags --depth=1 "${mgitrepo}" "$MODULES_GIT_DIR"
  56         (cd "$MODULES_GIT_DIR" && git fetch origin "${mversion}" && git checkout FETCH_HEAD)
  57     else
  58         git clone --no-tags --depth=1 -b "${mversion}" "${mgitrepo}" "$MODULES_GIT_DIR"
  59     fi
  60 }
  61
  62 # Checkout a shallow kernel tree of the specified tag
  63 git_clone_linux_sources() {
  64     mkdir -p "$LINUX_GIT_DIR"
  65     git clone --depth=1 -b "${ktag}" --reference "$LINUX_GIT_REF_REPO_DIR" "${kgitrepo}" "$LINUX_GIT_DIR"
  66 }
  67
  68
  69 # Export the kernel sources from the git repo
  70 git_export_linux_sources() {
  71     cd "$LINUX_GIT_DIR"
  72     git archive "${ktag}" | tar -x -C "$LINUX_SRCOBJ_DIR"
  73 }
  74
  75
  76 # Upload the tar archive to the object store
  77 upload_archive_obj() {
  78     s3cmd -c "$WORKSPACE/.s3cfg" put "$WORKSPACE/$obj_name" "$obj_url_prefix/"
  79     rm -f "$WORKSPACE/$obj_name"
  80 }
  81
  82
  83 extract_archive_obj() {
  84     tar -xf "$WORKSPACE/$obj_name" -C "$LINUX_OBJ_DIR"
  85     rm -f "$WORKSPACE/$obj_name"
  86 }
  87
  88
  89 tar_archive_obj() {
  90     cd "$LINUX_OBJ_DIR"
  91     tar -cf "$WORKSPACE/$obj_name" -I pbzip2 .
  92     cd -
  93 }
  94
  95 # Find the most recent GCC version supported by the kernel sources
  96 select_compiler() {
  97     local selected_cc
  98
  99     cd "$LINUX_SRCOBJ_DIR"
 100
 101     kversion=$(make -s kernelversion)
 102
 103     set +e
 104
 105     for cc in gcc-5 gcc-4.8; do
 106       if "${CROSS_COMPILE:-}${cc}" -I include/ -D__LINUX_COMPILER_H -D__LINUX_COMPILER_TYPES_H -E include/linux/compiler-gcc.h; then
 107         selected_cc="$cc"
 108         break
 109       fi
 110     done
 111
 112     set -e
 113
 114     if [ "x$selected_cc" = "x" ]; then
 115       echo "Found no suitable compiler."
 116       exit 1
 117     fi
 118
 119     # Force gcc-4.8 for kernels before 3.18
 120     if { verlt "$kversion" "3.18"; }; then
 121       selected_cc=gcc-4.8
 122     fi
 123
 124     if [ "$selected_cc" != "gcc-4.8" ]; then
 125         # Older kernel Makefiles do not expect the compiler to default to PIE
 126         KAFLAGS="-fno-pie"
 127         KCFLAGS="-fno-pie -no-pie -fno-stack-protector"
 128         KCPPFLAGS="-fno-pie"
 129         export KAFLAGS KCFLAGS KCPPFLAGS
 130     fi
 131
 132     export CC="${CROSS_COMPILE:-}${selected_cc}"
 133     export HOSTCC="${selected_cc}"
 134
 135     cd -
 136 }
 137
 138
 139 build_linux_kernel() {
 140     cd "$LINUX_SRCOBJ_DIR"
 141
 142     kversion=$(make -s kernelversion)
 143
 144     # Generate kernel configuration
 145     case "$ktag" in
 146       Ubuntu*)
 147         if [ "${cross_arch}" = "powerpc" ]; then
 148           if vergte "${kversion}" "4.10"; then
 149             echo "Ubuntu removed big endian powerpc configuration from kernel >= 4.10. Don't try to build it."
 150             exit 0
 151           fi
 152         fi
 153
 154         # Disable riscv64 config generation, we don't have a toolchain on bionic
 155         sed -i 's/riscv64 //' debian.master/etc/kernelconfig
 156
 157         fakeroot debian/rules clean KW_DEFCONFIG_DIR=.
 158         fakeroot debian/rules genconfigs KW_DEFCONFIG_DIR=.
 159         cp CONFIGS/"${ubuntu_config}" .config
 160         ;;
 161
 162       *)
 163         # Force 32bit build on i386, default is 64bit
 164         if [ "$arch" = "i386" ]; then
 165             export ARCH="i386"
 166         fi
 167
 168         # allyesconfig is mostly broken for kernels of the 2.6 series
 169         if verlt "$kversion" "3.0"; then
 170             vanilla_config="defconfig"
 171         fi
 172
 173         make "${vanilla_config}"
 174         ;;
 175     esac
 176
 177     # oldnoconfig was renamed in 4.19
 178     if vergte "$kversion" "4.19"; then
 179         update_conf_target="olddefconfig"
 180     else
 181         update_conf_target="oldnoconfig"
 182     fi
 183
 184     # Fix 'defined(@array)' was removed from recent perl
 185     if [ -f "kernel/timeconst.pl" ]; then
 186       sed -i 's/defined(\@\(.*\))/@\1/' kernel/timeconst.pl
 187     fi
 188
 189     # Fix syntax of inline assembly which is confused with C++11 raw strings on gcc >= 5
 190     if [ "$HOSTCC" != "gcc-4.8" ]; then
 191       if [ -f "arch/x86/kvm/svm.c" ]; then
 192         sed -i 's/ R"/ R "/g; s/"R"/" R "/g' arch/x86/kvm/svm.c
 193       fi
 194
 195       if [ -f "arch/x86/kvm/vmx.c" ]; then
 196         sed -i 's/ R"/ R "/g; s/"R"/" R "/g' arch/x86/kvm/vmx.c
 197       fi
 198     fi
 199
 200     # Newer binutils don't accept 3 operand 'cmp' instructions on ppc64
 201     # Convert them to 'cmpw' which was previously done silently
 202     if verlt "$kversion" "4.9"; then
 203             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/"
 204             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/"
 205             sed -i "s/\$pie \-o \"\$ofile\"/\$pie --no-dynamic-linker -o \"\$ofile\"/" arch/powerpc/boot/wrapper
 206     fi
 207
 208     # Fix a typo in v2.6.36.x
 209     if [ -f "arch/x86/kernel/entry_64.S" ]; then
 210       sed -i 's/END(do_hypervisor_callback)/END(xen_do_hypervisor_callback)/' arch/x86/kernel/entry_64.S
 211     fi
 212
 213     # Fix compiler switch in vdso Makefile for 2.6.36 to 2.6.36.2
 214     if { vergte "$kversion" "2.6.36" && verlte "$kversion" "2.6.36.3"; }; then
 215       sed -i 's/-m elf_x86_64/-m64/' arch/x86/vdso/Makefile
 216       sed -i 's/-m elf_i386/-m32/' arch/x86/vdso/Makefile
 217     fi
 218
 219     # Fix kernel < 3.0 with gcc >= 4.7
 220     if verlt "$kversion" "3.0"; then
 221       sed -i '/linux\/compiler.h/a #include <linux\/linkage.h> \/* For asmregparm *\/' arch/x86/include/asm/ptrace.h
 222       sed -i 's/extern long syscall_trace_enter/extern asmregparm long syscall_trace_enter/' arch/x86/include/asm/ptrace.h
 223       sed -i 's/extern void syscall_trace_leave/extern asmregparm void syscall_trace_leave/' arch/x86/include/asm/ptrace.h
 224       echo "header-y += linkage.h" >> include/linux/Kbuild
 225     fi
 226
 227     # GCC 4.8
 228     if [ "$HOSTCC" == "gcc-4.8" ]; then
 229       scripts/config --disable CONFIG_CC_STACKPROTECTOR_STRONG
 230     fi
 231
 232     # Don't try to sign modules
 233     scripts/config --disable CONFIG_MODULE_SIG
 234
 235     # Disable kernel stack frame correctness validation, introduced in 4.6.0 and currently fails
 236     scripts/config --disable CONFIG_STACK_VALIDATION
 237
 238     # Cause problems with inline assembly on i386
 239     scripts/config --disable CONFIG_DEBUG_SECTION_MISMATCH
 240
 241     # Don't build samples, they are broken on some kernel releases
 242     scripts/config --disable CONFIG_SAMPLES
 243     scripts/config --disable CONFIG_BUILD_DOCSRC
 244
 245     # Disable kcov
 246     scripts/config --disable CONFIG_KCOV
 247
 248     # Broken on some RT kernels
 249     scripts/config --disable CONFIG_HYPERV
 250
 251     # Broken drivers
 252     scripts/config --disable CONFIG_RAPIDIO_TSI721
 253     scripts/config --disable CONFIG_SGI_XP
 254     scripts/config --disable CONFIG_MFD_WM8994
 255     scripts/config --disable CONFIG_DRM_RADEON
 256     scripts/config --disable CONFIG_SND_SOC_WM5100
 257
 258     # IGBVF won't build with recent gcc on 2.6.38.x
 259     if { vergte "$kversion" "2.6.37" && verlt "$kversion" "2.6.38"; }; then
 260       scripts/config --disable CONFIG_IGBVF
 261     fi
 262
 263     # Set required options
 264     scripts/config --enable CONFIG_TRACEPOINTS
 265     scripts/config --enable CONFIG_KALLSYMS
 266     scripts/config --enable CONFIG_HIGH_RES_TIMERS
 267     scripts/config --enable CONFIG_KPROBES
 268     scripts/config --enable CONFIG_FTRACE
 269     scripts/config --enable CONFIG_BLK_DEV_IO_TRACE
 270     scripts/config --enable CONFIG_KALLSYMS_ALL
 271     scripts/config --enable CONFIG_HAVE_SYSCALL_TRACEPOINTS
 272     scripts/config --enable CONFIG_PERF_EVENTS
 273     scripts/config --enable CONFIG_EVENT_TRACING
 274     scripts/config --enable CONFIG_KRETPROBES
 275
 276     # Debug
 277     #cat .config
 278
 279     make "$update_conf_target" CC="$CC"
 280     make -j"$NPROC" CC="$CC"
 281
 282     krelease=$(make -s kernelrelease CC="$CC")
 283
 284     # Save the kernel and modules
 285     mkdir -p "$LINUX_INSTOBJ_DIR/boot"
 286     make INSTALL_MOD_PATH="$LINUX_INSTOBJ_DIR" INSTALL_MOD_STRIP=1 modules_install CC="$CC"
 287     make INSTALL_PATH="$LINUX_INSTOBJ_DIR/boot" install CC="$CC"
 288     rm -f "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source" "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/build"
 289     ln -s ../../../../sources "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source"
 290     ln -s ../../../../sources "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source"
 291 }
 292
 293
 294 extract_distro_headers() {
 295
 296     # Enter linux source dir
 297     cd "${LINUX_SRCOBJ_DIR}"
 298
 299
 300     # For RT kernels, copy version file
 301     if [ -s localversion-rt ]; then
 302         cp -a localversion-rt "${LINUX_HDROBJ_DIR}"
 303     fi
 304
 305     # Copy all Makefile related stuff
 306     find . -path './include/*' -prune \
 307         -o -path './scripts/*' -prune -o -type f \
 308         \( -name 'Makefile*' -o -name 'Kconfig*' -o -name 'Kbuild*' -o \
 309             -name '*.sh' -o -name '*.pl' -o -name '*.lds' \) \
 310         -print | cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
 311
 312     # Copy base scripts and include dirs
 313     cp -a scripts include "${LINUX_HDROBJ_DIR}"
 314
 315     # Copy arch includes
 316     (find arch -name include -type d -print0 | \
 317         xargs -0 -n1 -i: find : -type f) | \
 318         cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
 319
 320     # Copy arch scripts
 321     (find arch -name scripts -type d -print0 | \
 322         xargs -0 -n1 -i: find : -type f) | \
 323         cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
 324
 325     # Cleanup scripts
 326     rm -f "${LINUX_HDROBJ_DIR}/scripts/*.o"
 327     rm -f "${LINUX_HDROBJ_DIR}/scripts/*/*.o"
 328
 329     # On powerpc 32bits this object is required to link modules
 330     if [ "${karch}" = "powerpc" ]; then
 331         if [ "x$(scripts/config -s CONFIG_PPC64)" = "xy" ] && vergte "${kversion}" "5.4"; then
 332             :
 333         else
 334             cp -a --parents arch/powerpc/lib/crtsavres.[So] "${LINUX_HDROBJ_DIR}/"
 335         fi
 336     fi
 337
 338     # On arm64 between 4.13 and 1.15 this object is required to build with ftrace support
 339     if [ "${karch}" = "arm64" ]; then
 340         if [ -f "arch/arm64/kernel/ftrace-mod.S" ]; then
 341             cp -a --parents arch/arm64/kernel/ftrace-mod.[So] "${LINUX_HDROBJ_DIR}/"
 342         fi
 343     fi
 344
 345     # Newer kernels need objtool to build modules when CONFIG_STACK_VALIDATION=y
 346     if [ -f tools/objtool/objtool ]; then
 347       cp -a --parents tools/objtool/objtool "${LINUX_HDROBJ_DIR}/"
 348     fi
 349
 350     if [ -f "arch/x86/kernel/macros.s" ]; then
 351       cp -a --parents arch/x86/kernel/macros.s "${LINUX_HDROBJ_DIR}/"
 352     fi
 353
 354     # Copy modules related stuff, if available
 355     if [ -s Module.symvers ]; then
 356         cp Module.symvers "${LINUX_HDROBJ_DIR}"
 357     fi
 358
 359     if [ -s System.map ]; then
 360         cp System.map "${LINUX_HDROBJ_DIR}"
 361     fi
 362
 363     if [ -s Module.markers ]; then
 364         cp Module.markers "${LINUX_HDROBJ_DIR}"
 365     fi
 366
 367     # Copy config file
 368     cp .config "${LINUX_HDROBJ_DIR}"
 369
 370     # Make sure the Makefile and version.h have a matching timestamp so that
 371     # external modules can be built
 372     if [ -s "${LINUX_HDROBJ_DIR}/include/generated/uapi/linux/version.h" ]; then
 373         touch -r "${LINUX_HDROBJ_DIR}/Makefile" "${LINUX_HDROBJ_DIR}/include/generated/uapi/linux/version.h"
 374     elif [ -s "${LINUX_HDROBJ_DIR}/include/linux/version.h" ]; then
 375         touch -r "${LINUX_HDROBJ_DIR}/Makefile" "${LINUX_HDROBJ_DIR}/include/linux/version.h"
 376     else
 377         echo "Missing version.h"
 378         exit 1
 379     fi
 380     touch -r "${LINUX_HDROBJ_DIR}/.config" "${LINUX_HDROBJ_DIR}/include/generated/autoconf.h"
 381
 382     # Copy .config to include/config/auto.conf so "make prepare" is unnecessary.
 383     cp "${LINUX_HDROBJ_DIR}/.config" "${LINUX_HDROBJ_DIR}/include/config/auto.conf"
 384
 385     # Finally clean the object files from the full source tree
 386     make clean
 387
 388     # And regen the modules support files
 389     make modules_prepare CC="$CC"
 390
 391     # On powerpc 32bits this object is required to link modules
 392     if [ "${karch}" = "powerpc" ]; then
 393         if [ "x$(scripts/config -s CONFIG_PPC64)" = "xy" ] && vergte "${kversion}" "5.4"; then
 394             :
 395         else
 396             make arch/powerpc/lib/crtsavres.o CC="$CC"
 397         fi
 398     fi
 399
 400     # On arm64 between 4.13 and 4.15 this object is required to build with ftrace support
 401     if [ "${karch}" = "arm64" ]; then
 402         if [ -f "arch/arm64/kernel/ftrace-mod.S" ]; then
 403             make arch/arm64/kernel/ftrace-mod.o CC="$CC"
 404         fi
 405     fi
 406
 407     # Version specific tasks
 408     case "$ktag" in
 409       Ubuntu*)
 410         # Add Ubuntu ABI number to kernel headers, this is normally done by the packaging code
 411         ABINUM="$(echo "$ktag" | grep -P -o 'Ubuntu-(lts-)?.*-\K\d+(?=\..*)')"
 412         echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> include/generated/utsrelease.h
 413         echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> "${LINUX_HDROBJ_DIR}/include/generated/utsrelease.h"
 414         ;;
 415     esac
 416 }
 417
 418
 419 build_modules() {
 420
 421     local kdir="$1"
 422     local outdir="$2"
 423     local kversion
 424
 425     kversion=$(make -C "$LINUX_HDROBJ_DIR" -s kernelversion)
 426
 427     # Enter lttng-modules source dir
 428     cd "${MODULES_GIT_DIR}"
 429
 430     # kernels 3.10 to 3.10.13 and 3.11 to 3.11.2 introduce a deadlock in the
 431     # timekeeping subsystem. We want those build to fail.
 432     if { vergte "$kversion" "3.10" && verlte "$kversion" "3.10.13"; } || \
 433        { vergte "$kversion" "3.11" && verlte "$kversion" "3.11.2"; }; then
 434
 435         set +e
 436
 437         # Build modules
 438         KERNELDIR="${kdir}" make -j"${NPROC}" V=1 CC="$CC"
 439         ret=$?
 440
 441         set -e
 442
 443         # We expect this build to fail, if it doesn't, fail the job.
 444         if [ "$ret" -eq 0 ]; then
 445             echo "This build should have failed."
 446             exit 1
 447         fi
 448
 449         # We have to publish at least one file or the build will fail
 450         echo "This kernel is broken, there is a deadlock in the timekeeping subsystem." > "${outdir}/BROKEN.txt.ko"
 451
 452         KERNELDIR="${kdir}" make clean
 453
 454     else # Regular build
 455
 456         # Build modules against full kernel sources
 457         KERNELDIR="${kdir}" make -j"${NPROC}" V=1 CC="$CC"
 458
 459         # Install modules to build dir
 460         KERNELDIR="${kdir}" make INSTALL_MOD_PATH="${outdir}" modules_install
 461
 462         # Clean build dir
 463         KERNELDIR="${kdir}" make clean
 464     fi
 465 }
 466
 467
 468 ## MAIN ##
 469
 470 # Use all CPU cores
 471 NPROC=$(nproc)
 472
 473 MODULES_GIT_DIR="${WORKSPACE}/src/lttng-modules"
 474 LINUX_GIT_DIR="${WORKSPACE}/src/linux"
 475
 476 LINUX_OBJ_DIR="${WORKSPACE}/linux"
 477 LINUX_SRCOBJ_DIR="${LINUX_OBJ_DIR}/sources"
 478 LINUX_HDROBJ_DIR="${LINUX_OBJ_DIR}/headers"
 479 LINUX_INSTOBJ_DIR="${LINUX_OBJ_DIR}/install"
 480
 481 MODULES_OUTPUT_KSRC_DIR="${WORKSPACE}/build/lttng-modules-ksrc"
 482 MODULES_OUTPUT_KHDR_DIR="${WORKSPACE}/build/lttng-modules-khdr"
 483
 484 LINUX_GIT_REF_REPO_DIR="$HOME/gitcache/linux-stable.git/"
 485
 486 OBJ_STORE_URL="s3://jenkins"
 487
 488 cd "$WORKSPACE"
 489
 490 # Create build directories
 491 mkdir -p "${LINUX_SRCOBJ_DIR}" "${LINUX_HDROBJ_DIR}" "${LINUX_INSTOBJ_DIR}" "${MODULES_OUTPUT_KSRC_DIR}" "${MODULES_OUTPUT_KHDR_DIR}"
 492
 493 git_clone_modules_sources
 494
 495 # Setup cross compile env if available
 496 if [ "x${cross_arch}" != "x" ]; then
 497
 498     case "$cross_arch" in
 499         "armhf")
 500             karch="arm"
 501             cross_compile="arm-linux-gnueabihf-"
 502             vanilla_config="imx_v6_v7_defconfig"
 503             ubuntu_config="armhf-config.flavour.generic"
 504             ;;
 505
 506         "arm64")
 507             karch="arm64"
 508             cross_compile="aarch64-linux-gnu-"
 509             vanilla_config="defconfig"
 510             ubuntu_config="arm64-config.flavour.generic"
 511             ;;
 512
 513         "powerpc")
 514             karch="powerpc"
 515             cross_compile="powerpc-linux-gnu-"
 516             vanilla_config="ppc44x_defconfig"
 517             ubuntu_config="powerpc-config.flavour.powerpc-smp"
 518             ;;
 519
 520         "ppc64el")
 521             karch="powerpc"
 522             cross_compile="powerpc64le-linux-gnu-"
 523             vanilla_config="pseries_le_defconfig"
 524             ubuntu_config="ppc64el-config.flavour.generic"
 525             ;;
 526
 527         *)
 528             echo "Unsupported cross arch $cross_arch"
 529             exit 1
 530             ;;
 531     esac
 532
 533     # Export variables used by Kbuild for cross compilation
 534     export ARCH="${karch}"
 535     export CROSS_COMPILE="${cross_compile}"
 536
 537 # Set arch specific values if we are not cross compiling
 538 elif [ "x${arch}" != "x" ]; then
 539
 540     case "$arch" in
 541         "i386")
 542             karch="x86"
 543             vanilla_config="allyesconfig"
 544             ubuntu_config="i386-config.flavour.generic"
 545             ;;
 546
 547         "amd64")
 548             karch="x86"
 549             vanilla_config="allyesconfig"
 550             ubuntu_config="amd64-config.flavour.generic"
 551             ;;
 552
 553         "armhf")
 554             karch="arm"
 555             vanilla_config="allyesconfig"
 556             ubuntu_config="armhf-config.flavour.generic"
 557             ;;
 558
 559         "arm64")
 560             karch="arm64"
 561             vanilla_config="allyesconfig"
 562             ubuntu_config="arm64-config.flavour.generic"
 563             ;;
 564
 565         "powerpc")
 566             karch="powerpc"
 567             vanilla_config="allyesconfig"
 568             ubuntu_config="powerpc-config.flavour.powerpc-smp"
 569             ;;
 570
 571         "ppc64el")
 572             karch="powerpc"
 573             vanilla_config="allyesconfig"
 574             ubuntu_config="ppc64el-config.flavour.generic"
 575             ;;
 576
 577         *)
 578             echo "Unsupported arch $arch"
 579             exit 1
 580             ;;
 581     esac
 582 else
 583     echo "No arch or cross_arch specified"
 584     exit 1
 585 fi
 586
 587
 588
 589 # First get the kernel build from the object store, or build it, if it's
 590 # not available.
 591
 592 echo "# Setup endpoint
 593 host_base = obj.internal.efficios.com
 594 host_bucket = obj.internal.efficios.com
 595 bucket_location = us-east-1
 596 use_https = True
 597
 598 # Setup access keys
 599 access_key = jenkins
 600 secret_key = echo123456
 601
 602 # Enable S3 v4 signature APIs
 603 signature_v2 = False" > "$WORKSPACE/.s3cfg"
 604
 605 url_hash="$(echo -n "$kgitrepo" | md5sum | awk '{ print $1 }')"
 606 obj_name="linux.tar.bz2"
 607
 608 if [ "x${cross_arch}" = "x" ]; then
 609         obj_url_prefix="$OBJ_STORE_URL/linux-build/$url_hash/$ktag/$arch/native"
 610 else
 611         obj_url_prefix="$OBJ_STORE_URL/linux-build/$url_hash/$ktag/${cross_arch}"
 612 fi
 613
 614 obj_url="$obj_url_prefix/$obj_name"
 615
 616 set +e
 617 s3cmd -c "$WORKSPACE/.s3cfg" get "$obj_url"
 618 ret=$?
 619 set -e
 620
 621 case "$ret" in
 622     "0")
 623       extract_archive_obj
 624       ;;
 625
 626     "12")
 627       echo "File not found"
 628
 629       # Build all the things and upload
 630       # then finish the module build...
 631
 632       git_clone_linux_sources
 633       git_export_linux_sources
 634
 635       select_compiler
 636
 637       ## PREPARE FULL LINUX SOURCE TREE
 638       build_linux_kernel
 639
 640       ## EXTRACT DISTRO STYLE KERNEL HEADERS / DEVEL
 641       extract_distro_headers
 642
 643       tar_archive_obj
 644
 645       upload_archive_obj
 646
 647       ;;
 648
 649     *)
 650       echo "Unknown error? Abort"
 651       exit 1
 652       ;;
 653 esac
 654
 655 select_compiler
 656
 657 ## BUILD modules
 658 # Either we downloaded a pre-build kernel or we built it and uploaded
 659 # the archive for future builds.
 660
 661 cd "$WORKSPACE"
 662
 663 # Build modules against full kernel sources
 664 build_modules "${LINUX_SRCOBJ_DIR}" "${MODULES_OUTPUT_KSRC_DIR}"
 665
 666 # Build modules against kernel headers
 667 build_modules "${LINUX_HDROBJ_DIR}" "${MODULES_OUTPUT_KHDR_DIR}"
 668
 669 # Make sure some modules were actually built
 670 tree "${MODULES_OUTPUT_KSRC_DIR}"
 671 if [ "x$(find "${MODULES_OUTPUT_KSRC_DIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then
 672   echo "No modules built!"
 673   exit 1
 674 fi
 675
 676 tree "${MODULES_OUTPUT_KHDR_DIR}"
 677 if [ "x$(find "${MODULES_OUTPUT_KHDR_DIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then
 678   echo "No modules built!"
 679   exit 1
 680 fi
 681
 682 # EOF