scripts/lttng-modules/param-build.sh

   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 arch=${arch:-amd64}
  22 cross_arch=${cross_arch:-}
  23 ktag=${ktag:-}
  24 kgitrepo=${kgitrepo:-}
  25 mversion=${mversion:-}
  26 mgitrepo=${mgitrepo:-}
  27
  28
  29 ## FUNCTIONS ##
  30
  31 # Kernel version compare functions
  32 verlte() {
  33     [  "$1" = "$(printf '%s\n%s' "$1" "$2" | sort -V | head -n1)" ]
  34 }
  35
  36 verlt() {
  37     # shellcheck disable=SC2015
  38     [ "$1" = "$2" ] && return 1 || verlte "$1" "$2"
  39 }
  40
  41 vergte() {
  42     [  "$1" = "$(printf '%s\n%s' "$1" "$2" | sort -V | tail -n1)" ]
  43 }
  44
  45 vergt() {
  46     # shellcheck disable=SC2015
  47     [ "$1" = "$2" ] && return 1 || vergte "$1" "$2"
  48 }
  49
  50
  51 git_clone_modules_sources() {
  52     mkdir -p "$MODULES_GIT_DIR"
  53
  54     # If the version starts with "refs/", checkout the specific git ref, otherwise treat it
  55     # as a branch name.
  56     if [ "${mversion:0:5}" = "refs/" ]; then
  57         git clone --no-tags --depth=1 "${mgitrepo}" "$MODULES_GIT_DIR"
  58         (cd "$MODULES_GIT_DIR" && git fetch origin "${mversion}" && git checkout FETCH_HEAD)
  59     else
  60         git clone --no-tags --depth=1 -b "${mversion}" "${mgitrepo}" "$MODULES_GIT_DIR"
  61     fi
  62 }
  63
  64 # Checkout a shallow kernel tree of the specified tag
  65 git_clone_linux_sources() {
  66     mkdir -p "$LINUX_GIT_DIR"
  67     git clone --depth=1 -b "${ktag}" --reference "$LINUX_GIT_REF_REPO_DIR" "${kgitrepo}" "$LINUX_GIT_DIR"
  68 }
  69
  70
  71 # Export the kernel sources from the git repo
  72 git_export_linux_sources() {
  73     cd "$LINUX_GIT_DIR"
  74     git archive "${ktag}" | tar -x -C "$LINUX_SRCOBJ_DIR"
  75 }
  76
  77
  78 # Upload the tar archive to the object store
  79 upload_archive_obj() {
  80     s3cmd -c "$WORKSPACE/.s3cfg" put "$WORKSPACE/$obj_name" "$obj_url_prefix/"
  81     rm -f "$WORKSPACE/$obj_name"
  82 }
  83
  84
  85 extract_archive_obj() {
  86     tar -xf "$WORKSPACE/$obj_name" -C "$LINUX_OBJ_DIR"
  87     rm -f "$WORKSPACE/$obj_name"
  88 }
  89
  90
  91 tar_archive_obj() {
  92     cd "$LINUX_OBJ_DIR"
  93     tar -cf "$WORKSPACE/$obj_name" -I pbzip2 .
  94     cd -
  95 }
  96
  97 # Find the most recent GCC version supported by the kernel sources
  98 select_compiler() {
  99     local selected_cc
 100
 101     cd "$LINUX_SRCOBJ_DIR"
 102
 103     kversion=$(make -s kernelversion)
 104
 105     set +e
 106
 107     for cc in gcc-8 gcc-5 gcc-4.8; do
 108       if "${CROSS_COMPILE:-}${cc}" -I include/ -D__LINUX_COMPILER_H -D__LINUX_COMPILER_TYPES_H -E include/linux/compiler-gcc.h; then
 109         selected_cc="$cc"
 110         break
 111       fi
 112     done
 113
 114     set -e
 115
 116     if [ "x$selected_cc" = "x" ]; then
 117       echo "Found no suitable compiler."
 118       exit 1
 119     fi
 120
 121     # Force gcc-4.8 for kernels before 3.18
 122     if { verlt "$kversion" "3.18"; }; then
 123       selected_cc=gcc-4.8
 124     fi
 125
 126     if [ "$selected_cc" != "gcc-4.8" ]; then
 127         # Older kernel Makefiles do not expect the compiler to default to PIE
 128         KAFLAGS="-fno-pie"
 129         KCFLAGS="-fno-pie -no-pie -fno-stack-protector"
 130         KCPPFLAGS="-fno-pie"
 131         export KAFLAGS KCFLAGS KCPPFLAGS
 132     fi
 133
 134     export CC="${CROSS_COMPILE:-}${selected_cc}"
 135     export HOSTCC="${selected_cc}"
 136
 137     cd -
 138 }
 139
 140
 141 build_linux_kernel() {
 142     cd "$LINUX_SRCOBJ_DIR"
 143
 144     kversion=$(make -s kernelversion)
 145
 146     # Generate kernel configuration
 147     case "$ktag" in
 148       Ubuntu*)
 149         if [ "${cross_arch}" = "powerpc" ]; then
 150           if vergte "${kversion}" "4.10"; then
 151             echo "Ubuntu removed big endian powerpc configuration from kernel >= 4.10. Don't try to build it."
 152             exit 0
 153           fi
 154         fi
 155
 156         # Disable riscv64 config generation, we don't have a toolchain on bionic
 157         sed -i 's/riscv64 //' debian.master/etc/kernelconfig
 158
 159         # Hack for kernel Ubuntu-hwe-5.8
 160         if [ ! -f "debian/compat" ]; then
 161             echo "10" > "debian/compat"
 162         fi
 163
 164         fakeroot debian/rules clean KW_DEFCONFIG_DIR=.
 165         fakeroot debian/rules genconfigs KW_DEFCONFIG_DIR=.
 166         cp CONFIGS/"${ubuntu_config}" .config
 167         ;;
 168
 169       *)
 170         # Force 32bit build on i386, default is 64bit
 171         if [ "$arch" = "i386" ]; then
 172             export ARCH="i386"
 173         fi
 174
 175         # allyesconfig is mostly broken for kernels of the 2.6 series
 176         if verlt "$kversion" "3.0"; then
 177             vanilla_config="defconfig"
 178         fi
 179
 180         make "${vanilla_config}"
 181         ;;
 182     esac
 183
 184     # oldnoconfig was renamed in 4.19
 185     if vergte "$kversion" "4.19"; then
 186         update_conf_target="olddefconfig"
 187     else
 188         update_conf_target="oldnoconfig"
 189     fi
 190
 191     # Fix 'defined(@array)' was removed from recent perl
 192     if [ -f "kernel/timeconst.pl" ]; then
 193       sed -i 's/defined(\@\(.*\))/@\1/' kernel/timeconst.pl
 194     fi
 195
 196     # Fix syntax of inline assembly which is confused with C++11 raw strings on gcc >= 5
 197     if [ "$HOSTCC" != "gcc-4.8" ]; then
 198       if [ -f "arch/x86/kvm/svm.c" ]; then
 199         sed -i 's/ R"/ R "/g; s/"R"/" R "/g' arch/x86/kvm/svm.c
 200       fi
 201
 202       if [ -f "arch/x86/kvm/vmx.c" ]; then
 203         sed -i 's/ R"/ R "/g; s/"R"/" R "/g' arch/x86/kvm/vmx.c
 204       fi
 205     fi
 206
 207     # Newer binutils don't accept 3 operand 'cmp' instructions on ppc64
 208     # Convert them to 'cmpw' which was previously done silently
 209     if verlt "$kversion" "4.9"; then
 210             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/"
 211             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/"
 212             sed -i "s/\$pie \-o \"\$ofile\"/\$pie --no-dynamic-linker -o \"\$ofile\"/" arch/powerpc/boot/wrapper
 213     fi
 214
 215     # Fix a typo in v2.6.36.x
 216     if [ -f "arch/x86/kernel/entry_64.S" ]; then
 217       sed -i 's/END(do_hypervisor_callback)/END(xen_do_hypervisor_callback)/' arch/x86/kernel/entry_64.S
 218     fi
 219
 220     # Fix compiler switch in vdso Makefile for 2.6.36 to 2.6.36.2
 221     if { vergte "$kversion" "2.6.36" && verlte "$kversion" "2.6.36.3"; }; then
 222       sed -i 's/-m elf_x86_64/-m64/' arch/x86/vdso/Makefile
 223       sed -i 's/-m elf_i386/-m32/' arch/x86/vdso/Makefile
 224     fi
 225
 226     # Fix kernel < 3.0 with gcc >= 4.7
 227     if verlt "$kversion" "3.0"; then
 228       sed -i '/linux\/compiler.h/a #include <linux\/linkage.h> \/* For asmregparm *\/' arch/x86/include/asm/ptrace.h
 229       sed -i 's/extern long syscall_trace_enter/extern asmregparm long syscall_trace_enter/' arch/x86/include/asm/ptrace.h
 230       sed -i 's/extern void syscall_trace_leave/extern asmregparm void syscall_trace_leave/' arch/x86/include/asm/ptrace.h
 231       echo "header-y += linkage.h" >> include/linux/Kbuild
 232     fi
 233
 234     # GCC 4.8
 235     if [ "$HOSTCC" == "gcc-4.8" ]; then
 236       scripts/config --disable CONFIG_CC_STACKPROTECTOR_STRONG
 237     fi
 238
 239     # Don't try to sign modules
 240     scripts/config --disable CONFIG_MODULE_SIG
 241
 242     # Disable kernel stack frame correctness validation, introduced in 4.6.0 and currently fails
 243     scripts/config --disable CONFIG_STACK_VALIDATION
 244
 245     # Cause problems with inline assembly on i386
 246     scripts/config --disable CONFIG_DEBUG_SECTION_MISMATCH
 247
 248     # Don't build samples, they are broken on some kernel releases
 249     scripts/config --disable CONFIG_SAMPLES
 250     scripts/config --disable CONFIG_BUILD_DOCSRC
 251
 252     # Disable kcov
 253     scripts/config --disable CONFIG_KCOV
 254
 255     # Broken on some RT kernels
 256     scripts/config --disable CONFIG_HYPERV
 257
 258     # Broken drivers
 259     scripts/config --disable CONFIG_RAPIDIO_TSI721
 260     scripts/config --disable CONFIG_SGI_XP
 261     scripts/config --disable CONFIG_MFD_WM8994
 262     scripts/config --disable CONFIG_DRM_RADEON
 263     scripts/config --disable CONFIG_SND_SOC_WM5100
 264
 265     # IGBVF won't build with recent gcc on 2.6.38.x
 266     if { vergte "$kversion" "2.6.37" && verlt "$kversion" "2.6.38"; }; then
 267       scripts/config --disable CONFIG_IGBVF
 268     fi
 269
 270     # Don't fail the build on warnings
 271     scripts/config --disable CONFIG_WERROR
 272
 273     # Set required options
 274     scripts/config --enable CONFIG_TRACEPOINTS
 275     scripts/config --enable CONFIG_KALLSYMS
 276     scripts/config --enable CONFIG_HIGH_RES_TIMERS
 277     scripts/config --enable CONFIG_KPROBES
 278     scripts/config --enable CONFIG_FTRACE
 279     scripts/config --enable CONFIG_BLK_DEV_IO_TRACE
 280     scripts/config --enable CONFIG_KALLSYMS_ALL
 281     scripts/config --enable CONFIG_HAVE_SYSCALL_TRACEPOINTS
 282     scripts/config --enable CONFIG_PERF_EVENTS
 283     scripts/config --enable CONFIG_EVENT_TRACING
 284     scripts/config --enable CONFIG_KRETPROBES
 285
 286     # FIXME: disable objtool on vmlinux, it OOMs on allyesconfig
 287     sed -i 's/objtool_link vmlinux.o//' scripts/link-vmlinux.sh || true
 288
 289     # Debug
 290     #cat .config
 291
 292     make "$update_conf_target" CC="$CC"
 293     make -j"$NPROC" CC="$CC"
 294
 295     krelease=$(make -s kernelrelease CC="$CC")
 296
 297     # Save the kernel and modules
 298     mkdir -p "$LINUX_INSTOBJ_DIR/boot"
 299     make INSTALL_MOD_PATH="$LINUX_INSTOBJ_DIR" INSTALL_MOD_STRIP=1 modules_install CC="$CC"
 300     make INSTALL_MOD_PATH="$LINUX_INSTOBJ_DIR" INSTALL_PATH="$LINUX_INSTOBJ_DIR/boot" install CC="$CC"
 301     rm -f "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source" "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/build"
 302     ln -s ../../../../sources "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source"
 303     ln -s ../../../../sources "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source"
 304 }
 305
 306
 307 extract_distro_headers() {
 308
 309     # Enter linux source dir
 310     cd "${LINUX_SRCOBJ_DIR}"
 311
 312
 313     # For RT kernels, copy version file
 314     if [ -s localversion-rt ]; then
 315         cp -a localversion-rt "${LINUX_HDROBJ_DIR}"
 316     fi
 317
 318     # Copy all Makefile related stuff
 319     find . -path './include/*' -prune \
 320         -o -path './scripts/*' -prune -o -type f \
 321         \( -name 'Makefile*' -o -name 'Kconfig*' -o -name 'Kbuild*' -o \
 322             -name '*.sh' -o -name '*.pl' -o -name '*.lds' \) \
 323         -print | cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
 324
 325     # Copy base scripts and include dirs
 326     cp -a scripts include "${LINUX_HDROBJ_DIR}"
 327
 328     # Copy arch includes
 329     (find arch -name include -type d -print0 | \
 330         xargs -0 -n1 -i: find : -type f) | \
 331         cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
 332
 333     # Copy arch scripts
 334     (find arch -name scripts -type d -print0 | \
 335         xargs -0 -n1 -i: find : -type f) | \
 336         cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
 337
 338     # Cleanup scripts
 339     rm -f "${LINUX_HDROBJ_DIR}/scripts/*.o"
 340     rm -f "${LINUX_HDROBJ_DIR}/scripts/*/*.o"
 341
 342     # On powerpc 32bits this object is required to link modules
 343     if [ "${karch}" = "powerpc" ]; then
 344         if [ "x$(scripts/config -s CONFIG_PPC64)" = "xy" ] && vergte "${kversion}" "5.4"; then
 345             :
 346         else
 347             cp -a --parents arch/powerpc/lib/crtsavres.[So] "${LINUX_HDROBJ_DIR}/"
 348         fi
 349     fi
 350
 351     # On arm64 between 4.13 and 1.15 this object is required to build with ftrace support
 352     if [ "${karch}" = "arm64" ]; then
 353         if [ -f "arch/arm64/kernel/ftrace-mod.S" ]; then
 354             cp -a --parents arch/arm64/kernel/ftrace-mod.[So] "${LINUX_HDROBJ_DIR}/"
 355         fi
 356     fi
 357
 358     # Newer kernels need objtool to build modules when CONFIG_STACK_VALIDATION=y
 359     if [ -f tools/objtool/objtool ]; then
 360       cp -a --parents tools/objtool/objtool "${LINUX_HDROBJ_DIR}/"
 361     fi
 362
 363     if [ -f "arch/x86/kernel/macros.s" ]; then
 364       cp -a --parents arch/x86/kernel/macros.s "${LINUX_HDROBJ_DIR}/"
 365     fi
 366
 367     # Copy modules related stuff, if available
 368     if [ -s Module.symvers ]; then
 369         cp Module.symvers "${LINUX_HDROBJ_DIR}"
 370     fi
 371
 372     if [ -s System.map ]; then
 373         cp System.map "${LINUX_HDROBJ_DIR}"
 374     fi
 375
 376     if [ -s Module.markers ]; then
 377         cp Module.markers "${LINUX_HDROBJ_DIR}"
 378     fi
 379
 380     # Copy config file
 381     cp .config "${LINUX_HDROBJ_DIR}"
 382
 383     # Make sure the Makefile and version.h have a matching timestamp so that
 384     # external modules can be built
 385     if [ -s "${LINUX_HDROBJ_DIR}/include/generated/uapi/linux/version.h" ]; then
 386         touch -r "${LINUX_HDROBJ_DIR}/Makefile" "${LINUX_HDROBJ_DIR}/include/generated/uapi/linux/version.h"
 387     elif [ -s "${LINUX_HDROBJ_DIR}/include/linux/version.h" ]; then
 388         touch -r "${LINUX_HDROBJ_DIR}/Makefile" "${LINUX_HDROBJ_DIR}/include/linux/version.h"
 389     else
 390         echo "Missing version.h"
 391         exit 1
 392     fi
 393     touch -r "${LINUX_HDROBJ_DIR}/.config" "${LINUX_HDROBJ_DIR}/include/generated/autoconf.h"
 394
 395     # Copy .config to include/config/auto.conf so "make prepare" is unnecessary.
 396     if [ ! -f "${LINUX_HDROBJ_DIR}/include/config/auto.conf" ]; then
 397         cp "${LINUX_HDROBJ_DIR}/.config" "${LINUX_HDROBJ_DIR}/include/config/auto.conf"
 398     fi
 399
 400     # Finally clean the object files from the full source tree
 401     make clean
 402
 403     # And regen the modules support files
 404     make modules_prepare CC="$CC"
 405
 406     # On powerpc 32bits this object is required to link modules
 407     if [ "${karch}" = "powerpc" ]; then
 408         if [ "x$(scripts/config -s CONFIG_PPC64)" = "xy" ] && vergte "${kversion}" "5.4"; then
 409             :
 410         else
 411             make arch/powerpc/lib/crtsavres.o CC="$CC"
 412         fi
 413     fi
 414
 415     # On arm64 between 4.13 and 4.15 this object is required to build with ftrace support
 416     if [ "${karch}" = "arm64" ]; then
 417         if [ -f "arch/arm64/kernel/ftrace-mod.S" ]; then
 418             make arch/arm64/kernel/ftrace-mod.o CC="$CC"
 419         fi
 420     fi
 421
 422     # Version specific tasks
 423     case "$ktag" in
 424       Ubuntu*)
 425         # Add Ubuntu ABI number to kernel headers, this is normally done by the packaging code
 426         ABINUM="$(echo "$ktag" | grep -P -o 'Ubuntu-(lts-)?.*-\K\d+(?=\..*)')"
 427         echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> include/generated/utsrelease.h
 428         echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> "${LINUX_HDROBJ_DIR}/include/generated/utsrelease.h"
 429         ;;
 430     esac
 431 }
 432
 433
 434 build_modules() {
 435
 436     local kdir="$1"
 437     local outdir="$2"
 438     local kversion
 439
 440     kversion=$(make -C "$LINUX_HDROBJ_DIR" -s kernelversion)
 441
 442     # Try to catch some compatibility problems by turning some
 443     # warnings into errors.
 444     #export KCFLAGS="$KCFLAGS -Wall -Werror"
 445
 446     # Enter lttng-modules source dir
 447     cd "${MODULES_GIT_DIR}"
 448
 449     # kernels 3.10 to 3.10.13 and 3.11 to 3.11.2 introduce a deadlock in the
 450     # timekeeping subsystem. We want those build to fail.
 451     if { vergte "$kversion" "3.10" && verlte "$kversion" "3.10.13"; } || \
 452        { vergte "$kversion" "3.11" && verlte "$kversion" "3.11.2"; }; then
 453
 454         set +e
 455
 456         # Build modules
 457         KERNELDIR="${kdir}" make -j"${NPROC}" V=1 CC="$CC"
 458         ret=$?
 459
 460         set -e
 461
 462         # We expect this build to fail, if it doesn't, fail the job.
 463         if [ "$ret" -eq 0 ]; then
 464             echo "This build should have failed."
 465             exit 1
 466         fi
 467
 468         # We have to publish at least one file or the build will fail
 469         echo "This kernel is broken, there is a deadlock in the timekeeping subsystem." > "${outdir}/BROKEN.txt.ko"
 470
 471         KERNELDIR="${kdir}" make clean
 472
 473     else # Regular build
 474
 475         # Build modules against full kernel sources
 476         KERNELDIR="${kdir}" make -j"${NPROC}" V=1 CC="$CC"
 477
 478         # Install modules to build dir
 479         KERNELDIR="${kdir}" make INSTALL_MOD_PATH="${outdir}" modules_install
 480
 481         # Clean build dir
 482         KERNELDIR="${kdir}" make clean
 483     fi
 484 }
 485
 486
 487 ## MAIN ##
 488
 489 # Use all CPU cores
 490 NPROC=$(nproc)
 491
 492 MODULES_GIT_DIR="${WORKSPACE}/src/lttng-modules"
 493 LINUX_GIT_DIR="${WORKSPACE}/src/linux"
 494
 495 LINUX_OBJ_DIR="${WORKSPACE}/linux"
 496 LINUX_SRCOBJ_DIR="${LINUX_OBJ_DIR}/sources"
 497 LINUX_HDROBJ_DIR="${LINUX_OBJ_DIR}/headers"
 498 LINUX_INSTOBJ_DIR="${LINUX_OBJ_DIR}/install"
 499
 500 MODULES_OUTPUT_KSRC_DIR="${WORKSPACE}/build/lttng-modules-ksrc"
 501 MODULES_OUTPUT_KHDR_DIR="${WORKSPACE}/build/lttng-modules-khdr"
 502
 503 LINUX_GIT_REF_REPO_DIR="$HOME/gitcache/linux-stable.git/"
 504
 505 OBJ_STORE_URL="s3://jenkins"
 506
 507 cd "$WORKSPACE"
 508
 509 # Create build directories
 510 mkdir -p "${LINUX_SRCOBJ_DIR}" "${LINUX_HDROBJ_DIR}" "${LINUX_INSTOBJ_DIR}" "${MODULES_OUTPUT_KSRC_DIR}" "${MODULES_OUTPUT_KHDR_DIR}"
 511
 512 git_clone_modules_sources
 513
 514 # Setup cross compile env if available
 515 if [ "x${cross_arch}" != "x" ]; then
 516
 517     case "$cross_arch" in
 518         "armhf")
 519             karch="arm"
 520             cross_compile="arm-linux-gnueabihf-"
 521             vanilla_config="imx_v6_v7_defconfig"
 522             ubuntu_config="armhf-config.flavour.generic"
 523             ;;
 524
 525         "arm64")
 526             karch="arm64"
 527             cross_compile="aarch64-linux-gnu-"
 528             vanilla_config="defconfig"
 529             ubuntu_config="arm64-config.flavour.generic"
 530             ;;
 531
 532         "powerpc")
 533             karch="powerpc"
 534             cross_compile="powerpc-linux-gnu-"
 535             vanilla_config="ppc44x_defconfig"
 536             ubuntu_config="powerpc-config.flavour.powerpc-smp"
 537             ;;
 538
 539         "ppc64el")
 540             karch="powerpc"
 541             cross_compile="powerpc64le-linux-gnu-"
 542             vanilla_config="pseries_le_defconfig"
 543             ubuntu_config="ppc64el-config.flavour.generic"
 544             ;;
 545
 546         *)
 547             echo "Unsupported cross arch $cross_arch"
 548             exit 1
 549             ;;
 550     esac
 551
 552     # Export variables used by Kbuild for cross compilation
 553     export ARCH="${karch}"
 554     export CROSS_COMPILE="${cross_compile}"
 555
 556 # Set arch specific values if we are not cross compiling
 557 elif [ "x${arch}" != "x" ]; then
 558
 559     case "$arch" in
 560         "i386")
 561             karch="x86"
 562             vanilla_config="allyesconfig"
 563             ubuntu_config="i386-config.flavour.generic"
 564             ;;
 565
 566         "amd64")
 567             karch="x86"
 568             vanilla_config="allyesconfig"
 569             ubuntu_config="amd64-config.flavour.generic"
 570             ;;
 571
 572         "armhf")
 573             karch="arm"
 574             vanilla_config="allyesconfig"
 575             ubuntu_config="armhf-config.flavour.generic"
 576             ;;
 577
 578         "arm64")
 579             karch="arm64"
 580             vanilla_config="allyesconfig"
 581             ubuntu_config="arm64-config.flavour.generic"
 582             ;;
 583
 584         "powerpc")
 585             karch="powerpc"
 586             vanilla_config="allyesconfig"
 587             ubuntu_config="powerpc-config.flavour.powerpc-smp"
 588             ;;
 589
 590         "ppc64el")
 591             karch="powerpc"
 592             vanilla_config="allyesconfig"
 593             ubuntu_config="ppc64el-config.flavour.generic"
 594             ;;
 595
 596         *)
 597             echo "Unsupported arch $arch"
 598             exit 1
 599             ;;
 600     esac
 601 else
 602     echo "No arch or cross_arch specified"
 603     exit 1
 604 fi
 605
 606
 607
 608 # First get the kernel build from the object store, or build it, if it's
 609 # not available.
 610
 611 echo "# Setup endpoint
 612 host_base = obj.internal.efficios.com
 613 host_bucket = obj.internal.efficios.com
 614 bucket_location = us-east-1
 615 use_https = True
 616
 617 # Setup access keys
 618 access_key = jenkins
 619 secret_key = echo123456
 620
 621 # Enable S3 v4 signature APIs
 622 signature_v2 = False" > "$WORKSPACE/.s3cfg"
 623
 624 url_hash="$(echo -n "$kgitrepo" | md5sum | awk '{ print $1 }')"
 625 obj_name="linux.tar.bz2"
 626
 627 if [ "x${cross_arch}" = "x" ]; then
 628         obj_url_prefix="$OBJ_STORE_URL/linux-build/$url_hash/$ktag/$arch/native"
 629 else
 630         obj_url_prefix="$OBJ_STORE_URL/linux-build/$url_hash/$ktag/${cross_arch}"
 631 fi
 632
 633 obj_url="$obj_url_prefix/$obj_name"
 634
 635 set +e
 636 s3cmd -c "$WORKSPACE/.s3cfg" get "$obj_url"
 637 ret=$?
 638 set -e
 639
 640 case "$ret" in
 641     "0")
 642       extract_archive_obj
 643       ;;
 644
 645     "12")
 646       echo "File not found"
 647
 648       # Build all the things and upload
 649       # then finish the module build...
 650
 651       git_clone_linux_sources
 652       git_export_linux_sources
 653
 654       select_compiler
 655
 656       ## PREPARE FULL LINUX SOURCE TREE
 657       build_linux_kernel
 658
 659       ## EXTRACT DISTRO STYLE KERNEL HEADERS / DEVEL
 660       extract_distro_headers
 661
 662       tar_archive_obj
 663
 664       upload_archive_obj
 665
 666       ;;
 667
 668     *)
 669       echo "Unknown error? Abort"
 670       exit 1
 671       ;;
 672 esac
 673
 674 select_compiler
 675
 676 ## BUILD modules
 677 # Either we downloaded a pre-build kernel or we built it and uploaded
 678 # the archive for future builds.
 679
 680 cd "$WORKSPACE"
 681
 682 # Build modules against full kernel sources
 683 build_modules "${LINUX_SRCOBJ_DIR}" "${MODULES_OUTPUT_KSRC_DIR}"
 684
 685 # Build modules against kernel headers
 686 build_modules "${LINUX_HDROBJ_DIR}" "${MODULES_OUTPUT_KHDR_DIR}"
 687
 688 # Make sure some modules were actually built
 689 tree "${MODULES_OUTPUT_KSRC_DIR}"
 690 if [ "x$(find "${MODULES_OUTPUT_KSRC_DIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then
 691   echo "No modules built!"
 692   exit 1
 693 fi
 694
 695 tree "${MODULES_OUTPUT_KHDR_DIR}"
 696 if [ "x$(find "${MODULES_OUTPUT_KHDR_DIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then
 697   echo "No modules built!"
 698   exit 1
 699 fi
 700
 701 # EOF