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 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/$ktag/platform-${platforms}/$arch/native"
 661 else
 662         obj_url_prefix="$OBJ_STORE_URL/linux-build/$url_hash/$ktag/platform-${platforms}/${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