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     # Set required options
 271     scripts/config --enable CONFIG_TRACEPOINTS
 272     scripts/config --enable CONFIG_KALLSYMS
 273     scripts/config --enable CONFIG_HIGH_RES_TIMERS
 274     scripts/config --enable CONFIG_KPROBES
 275     scripts/config --enable CONFIG_FTRACE
 276     scripts/config --enable CONFIG_BLK_DEV_IO_TRACE
 277     scripts/config --enable CONFIG_KALLSYMS_ALL
 278     scripts/config --enable CONFIG_HAVE_SYSCALL_TRACEPOINTS
 279     scripts/config --enable CONFIG_PERF_EVENTS
 280     scripts/config --enable CONFIG_EVENT_TRACING
 281     scripts/config --enable CONFIG_KRETPROBES
 282
 283     # FIXME: disable objtool on vmlinux, it OOMs on allyesconfig
 284     sed -i 's/objtool_link vmlinux.o//' scripts/link-vmlinux.sh || true
 285
 286     # Debug
 287     #cat .config
 288
 289     make "$update_conf_target" CC="$CC"
 290     make -j"$NPROC" CC="$CC"
 291
 292     krelease=$(make -s kernelrelease CC="$CC")
 293
 294     # Save the kernel and modules
 295     mkdir -p "$LINUX_INSTOBJ_DIR/boot"
 296     make INSTALL_MOD_PATH="$LINUX_INSTOBJ_DIR" INSTALL_MOD_STRIP=1 modules_install CC="$CC"
 297     make INSTALL_MOD_PATH="$LINUX_INSTOBJ_DIR" INSTALL_PATH="$LINUX_INSTOBJ_DIR/boot" install CC="$CC"
 298     rm -f "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source" "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/build"
 299     ln -s ../../../../sources "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source"
 300     ln -s ../../../../sources "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source"
 301 }
 302
 303
 304 extract_distro_headers() {
 305
 306     # Enter linux source dir
 307     cd "${LINUX_SRCOBJ_DIR}"
 308
 309
 310     # For RT kernels, copy version file
 311     if [ -s localversion-rt ]; then
 312         cp -a localversion-rt "${LINUX_HDROBJ_DIR}"
 313     fi
 314
 315     # Copy all Makefile related stuff
 316     find . -path './include/*' -prune \
 317         -o -path './scripts/*' -prune -o -type f \
 318         \( -name 'Makefile*' -o -name 'Kconfig*' -o -name 'Kbuild*' -o \
 319             -name '*.sh' -o -name '*.pl' -o -name '*.lds' \) \
 320         -print | cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
 321
 322     # Copy base scripts and include dirs
 323     cp -a scripts include "${LINUX_HDROBJ_DIR}"
 324
 325     # Copy arch includes
 326     (find arch -name include -type d -print0 | \
 327         xargs -0 -n1 -i: find : -type f) | \
 328         cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
 329
 330     # Copy arch scripts
 331     (find arch -name scripts -type d -print0 | \
 332         xargs -0 -n1 -i: find : -type f) | \
 333         cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
 334
 335     # Cleanup scripts
 336     rm -f "${LINUX_HDROBJ_DIR}/scripts/*.o"
 337     rm -f "${LINUX_HDROBJ_DIR}/scripts/*/*.o"
 338
 339     # On powerpc 32bits this object is required to link modules
 340     if [ "${karch}" = "powerpc" ]; then
 341         if [ "x$(scripts/config -s CONFIG_PPC64)" = "xy" ] && vergte "${kversion}" "5.4"; then
 342             :
 343         else
 344             cp -a --parents arch/powerpc/lib/crtsavres.[So] "${LINUX_HDROBJ_DIR}/"
 345         fi
 346     fi
 347
 348     # On arm64 between 4.13 and 1.15 this object is required to build with ftrace support
 349     if [ "${karch}" = "arm64" ]; then
 350         if [ -f "arch/arm64/kernel/ftrace-mod.S" ]; then
 351             cp -a --parents arch/arm64/kernel/ftrace-mod.[So] "${LINUX_HDROBJ_DIR}/"
 352         fi
 353     fi
 354
 355     # Newer kernels need objtool to build modules when CONFIG_STACK_VALIDATION=y
 356     if [ -f tools/objtool/objtool ]; then
 357       cp -a --parents tools/objtool/objtool "${LINUX_HDROBJ_DIR}/"
 358     fi
 359
 360     if [ -f "arch/x86/kernel/macros.s" ]; then
 361       cp -a --parents arch/x86/kernel/macros.s "${LINUX_HDROBJ_DIR}/"
 362     fi
 363
 364     # Copy modules related stuff, if available
 365     if [ -s Module.symvers ]; then
 366         cp Module.symvers "${LINUX_HDROBJ_DIR}"
 367     fi
 368
 369     if [ -s System.map ]; then
 370         cp System.map "${LINUX_HDROBJ_DIR}"
 371     fi
 372
 373     if [ -s Module.markers ]; then
 374         cp Module.markers "${LINUX_HDROBJ_DIR}"
 375     fi
 376
 377     # Copy config file
 378     cp .config "${LINUX_HDROBJ_DIR}"
 379
 380     # Make sure the Makefile and version.h have a matching timestamp so that
 381     # external modules can be built
 382     if [ -s "${LINUX_HDROBJ_DIR}/include/generated/uapi/linux/version.h" ]; then
 383         touch -r "${LINUX_HDROBJ_DIR}/Makefile" "${LINUX_HDROBJ_DIR}/include/generated/uapi/linux/version.h"
 384     elif [ -s "${LINUX_HDROBJ_DIR}/include/linux/version.h" ]; then
 385         touch -r "${LINUX_HDROBJ_DIR}/Makefile" "${LINUX_HDROBJ_DIR}/include/linux/version.h"
 386     else
 387         echo "Missing version.h"
 388         exit 1
 389     fi
 390     touch -r "${LINUX_HDROBJ_DIR}/.config" "${LINUX_HDROBJ_DIR}/include/generated/autoconf.h"
 391
 392     # Copy .config to include/config/auto.conf so "make prepare" is unnecessary.
 393     if [ ! -f "${LINUX_HDROBJ_DIR}/include/config/auto.conf" ]; then
 394         cp "${LINUX_HDROBJ_DIR}/.config" "${LINUX_HDROBJ_DIR}/include/config/auto.conf"
 395     fi
 396
 397     # Finally clean the object files from the full source tree
 398     make clean
 399
 400     # And regen the modules support files
 401     make modules_prepare CC="$CC"
 402
 403     # On powerpc 32bits this object is required to link modules
 404     if [ "${karch}" = "powerpc" ]; then
 405         if [ "x$(scripts/config -s CONFIG_PPC64)" = "xy" ] && vergte "${kversion}" "5.4"; then
 406             :
 407         else
 408             make arch/powerpc/lib/crtsavres.o CC="$CC"
 409         fi
 410     fi
 411
 412     # On arm64 between 4.13 and 4.15 this object is required to build with ftrace support
 413     if [ "${karch}" = "arm64" ]; then
 414         if [ -f "arch/arm64/kernel/ftrace-mod.S" ]; then
 415             make arch/arm64/kernel/ftrace-mod.o CC="$CC"
 416         fi
 417     fi
 418
 419     # Version specific tasks
 420     case "$ktag" in
 421       Ubuntu*)
 422         # Add Ubuntu ABI number to kernel headers, this is normally done by the packaging code
 423         ABINUM="$(echo "$ktag" | grep -P -o 'Ubuntu-(lts-)?.*-\K\d+(?=\..*)')"
 424         echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> include/generated/utsrelease.h
 425         echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> "${LINUX_HDROBJ_DIR}/include/generated/utsrelease.h"
 426         ;;
 427     esac
 428 }
 429
 430
 431 build_modules() {
 432
 433     local kdir="$1"
 434     local outdir="$2"
 435     local kversion
 436
 437     kversion=$(make -C "$LINUX_HDROBJ_DIR" -s kernelversion)
 438
 439     # Try to catch some compatibility problems by turning some
 440     # warnings into errors.
 441     #export KCFLAGS="$KCFLAGS -Wall -Werror"
 442
 443     # Enter lttng-modules source dir
 444     cd "${MODULES_GIT_DIR}"
 445
 446     # kernels 3.10 to 3.10.13 and 3.11 to 3.11.2 introduce a deadlock in the
 447     # timekeeping subsystem. We want those build to fail.
 448     if { vergte "$kversion" "3.10" && verlte "$kversion" "3.10.13"; } || \
 449        { vergte "$kversion" "3.11" && verlte "$kversion" "3.11.2"; }; then
 450
 451         set +e
 452
 453         # Build modules
 454         KERNELDIR="${kdir}" make -j"${NPROC}" V=1 CC="$CC"
 455         ret=$?
 456
 457         set -e
 458
 459         # We expect this build to fail, if it doesn't, fail the job.
 460         if [ "$ret" -eq 0 ]; then
 461             echo "This build should have failed."
 462             exit 1
 463         fi
 464
 465         # We have to publish at least one file or the build will fail
 466         echo "This kernel is broken, there is a deadlock in the timekeeping subsystem." > "${outdir}/BROKEN.txt.ko"
 467
 468         KERNELDIR="${kdir}" make clean
 469
 470     else # Regular build
 471
 472         # Build modules against full kernel sources
 473         KERNELDIR="${kdir}" make -j"${NPROC}" V=1 CC="$CC"
 474
 475         # Install modules to build dir
 476         KERNELDIR="${kdir}" make INSTALL_MOD_PATH="${outdir}" modules_install
 477
 478         # Clean build dir
 479         KERNELDIR="${kdir}" make clean
 480     fi
 481 }
 482
 483
 484 ## MAIN ##
 485
 486 # Use all CPU cores
 487 NPROC=$(nproc)
 488
 489 MODULES_GIT_DIR="${WORKSPACE}/src/lttng-modules"
 490 LINUX_GIT_DIR="${WORKSPACE}/src/linux"
 491
 492 LINUX_OBJ_DIR="${WORKSPACE}/linux"
 493 LINUX_SRCOBJ_DIR="${LINUX_OBJ_DIR}/sources"
 494 LINUX_HDROBJ_DIR="${LINUX_OBJ_DIR}/headers"
 495 LINUX_INSTOBJ_DIR="${LINUX_OBJ_DIR}/install"
 496
 497 MODULES_OUTPUT_KSRC_DIR="${WORKSPACE}/build/lttng-modules-ksrc"
 498 MODULES_OUTPUT_KHDR_DIR="${WORKSPACE}/build/lttng-modules-khdr"
 499
 500 LINUX_GIT_REF_REPO_DIR="$HOME/gitcache/linux-stable.git/"
 501
 502 OBJ_STORE_URL="s3://jenkins"
 503
 504 cd "$WORKSPACE"
 505
 506 # Create build directories
 507 mkdir -p "${LINUX_SRCOBJ_DIR}" "${LINUX_HDROBJ_DIR}" "${LINUX_INSTOBJ_DIR}" "${MODULES_OUTPUT_KSRC_DIR}" "${MODULES_OUTPUT_KHDR_DIR}"
 508
 509 git_clone_modules_sources
 510
 511 # Setup cross compile env if available
 512 if [ "x${cross_arch}" != "x" ]; then
 513
 514     case "$cross_arch" in
 515         "armhf")
 516             karch="arm"
 517             cross_compile="arm-linux-gnueabihf-"
 518             vanilla_config="imx_v6_v7_defconfig"
 519             ubuntu_config="armhf-config.flavour.generic"
 520             ;;
 521
 522         "arm64")
 523             karch="arm64"
 524             cross_compile="aarch64-linux-gnu-"
 525             vanilla_config="defconfig"
 526             ubuntu_config="arm64-config.flavour.generic"
 527             ;;
 528
 529         "powerpc")
 530             karch="powerpc"
 531             cross_compile="powerpc-linux-gnu-"
 532             vanilla_config="ppc44x_defconfig"
 533             ubuntu_config="powerpc-config.flavour.powerpc-smp"
 534             ;;
 535
 536         "ppc64el")
 537             karch="powerpc"
 538             cross_compile="powerpc64le-linux-gnu-"
 539             vanilla_config="pseries_le_defconfig"
 540             ubuntu_config="ppc64el-config.flavour.generic"
 541             ;;
 542
 543         *)
 544             echo "Unsupported cross arch $cross_arch"
 545             exit 1
 546             ;;
 547     esac
 548
 549     # Export variables used by Kbuild for cross compilation
 550     export ARCH="${karch}"
 551     export CROSS_COMPILE="${cross_compile}"
 552
 553 # Set arch specific values if we are not cross compiling
 554 elif [ "x${arch}" != "x" ]; then
 555
 556     case "$arch" in
 557         "i386")
 558             karch="x86"
 559             vanilla_config="allyesconfig"
 560             ubuntu_config="i386-config.flavour.generic"
 561             ;;
 562
 563         "amd64")
 564             karch="x86"
 565             vanilla_config="allyesconfig"
 566             ubuntu_config="amd64-config.flavour.generic"
 567             ;;
 568
 569         "armhf")
 570             karch="arm"
 571             vanilla_config="allyesconfig"
 572             ubuntu_config="armhf-config.flavour.generic"
 573             ;;
 574
 575         "arm64")
 576             karch="arm64"
 577             vanilla_config="allyesconfig"
 578             ubuntu_config="arm64-config.flavour.generic"
 579             ;;
 580
 581         "powerpc")
 582             karch="powerpc"
 583             vanilla_config="allyesconfig"
 584             ubuntu_config="powerpc-config.flavour.powerpc-smp"
 585             ;;
 586
 587         "ppc64el")
 588             karch="powerpc"
 589             vanilla_config="allyesconfig"
 590             ubuntu_config="ppc64el-config.flavour.generic"
 591             ;;
 592
 593         *)
 594             echo "Unsupported arch $arch"
 595             exit 1
 596             ;;
 597     esac
 598 else
 599     echo "No arch or cross_arch specified"
 600     exit 1
 601 fi
 602
 603
 604
 605 # First get the kernel build from the object store, or build it, if it's
 606 # not available.
 607
 608 echo "# Setup endpoint
 609 host_base = obj.internal.efficios.com
 610 host_bucket = obj.internal.efficios.com
 611 bucket_location = us-east-1
 612 use_https = True
 613
 614 # Setup access keys
 615 access_key = jenkins
 616 secret_key = echo123456
 617
 618 # Enable S3 v4 signature APIs
 619 signature_v2 = False" > "$WORKSPACE/.s3cfg"
 620
 621 url_hash="$(echo -n "$kgitrepo" | md5sum | awk '{ print $1 }')"
 622 obj_name="linux.tar.bz2"
 623
 624 if [ "x${cross_arch}" = "x" ]; then
 625         obj_url_prefix="$OBJ_STORE_URL/linux-build/$url_hash/$ktag/$arch/native"
 626 else
 627         obj_url_prefix="$OBJ_STORE_URL/linux-build/$url_hash/$ktag/${cross_arch}"
 628 fi
 629
 630 obj_url="$obj_url_prefix/$obj_name"
 631
 632 set +e
 633 s3cmd -c "$WORKSPACE/.s3cfg" get "$obj_url"
 634 ret=$?
 635 set -e
 636
 637 case "$ret" in
 638     "0")
 639       extract_archive_obj
 640       ;;
 641
 642     "12")
 643       echo "File not found"
 644
 645       # Build all the things and upload
 646       # then finish the module build...
 647
 648       git_clone_linux_sources
 649       git_export_linux_sources
 650
 651       select_compiler
 652
 653       ## PREPARE FULL LINUX SOURCE TREE
 654       build_linux_kernel
 655
 656       ## EXTRACT DISTRO STYLE KERNEL HEADERS / DEVEL
 657       extract_distro_headers
 658
 659       tar_archive_obj
 660
 661       upload_archive_obj
 662
 663       ;;
 664
 665     *)
 666       echo "Unknown error? Abort"
 667       exit 1
 668       ;;
 669 esac
 670
 671 select_compiler
 672
 673 ## BUILD modules
 674 # Either we downloaded a pre-build kernel or we built it and uploaded
 675 # the archive for future builds.
 676
 677 cd "$WORKSPACE"
 678
 679 # Build modules against full kernel sources
 680 build_modules "${LINUX_SRCOBJ_DIR}" "${MODULES_OUTPUT_KSRC_DIR}"
 681
 682 # Build modules against kernel headers
 683 build_modules "${LINUX_HDROBJ_DIR}" "${MODULES_OUTPUT_KHDR_DIR}"
 684
 685 # Make sure some modules were actually built
 686 tree "${MODULES_OUTPUT_KSRC_DIR}"
 687 if [ "x$(find "${MODULES_OUTPUT_KSRC_DIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then
 688   echo "No modules built!"
 689   exit 1
 690 fi
 691
 692 tree "${MODULES_OUTPUT_KHDR_DIR}"
 693 if [ "x$(find "${MODULES_OUTPUT_KHDR_DIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then
 694   echo "No modules built!"
 695   exit 1
 696 fi
 697
 698 # EOF