scripts/lttng-modules/build.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (C) 2015 - Jonathan Rajotte-Julien <jonathan.rajotte-julien@efficios.com>
   4 #                      Michael Jeanson <mjeanson@efficios.com>
   5 #
   6 # This program is free software: you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation, either version 3 of the License, or
   9 # (at your option) any later version.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 set -exu
  20
  21 # Kernel version compare functions
  22 verlte() {
  23     [  "$1" = "`printf '%s\n%s' $1 $2 | sort -V | head -n1`" ]
  24 }
  25
  26 verlt() {
  27     [ "$1" = "$2" ] && return 1 || verlte $1 $2
  28 }
  29
  30 vergte() {
  31     [  "$1" = "`printf '%s\n%s' $1 $2 | sort -V | tail -n1`" ]
  32 }
  33
  34 vergt() {
  35     [ "$1" = "$2" ] && return 1 || vergte $1 $2
  36 }
  37
  38
  39 # Use all CPU cores
  40 NPROC=$(nproc)
  41
  42 SRCDIR="${WORKSPACE}/src/lttng-modules"
  43 BUILDDIR="${WORKSPACE}/build"
  44 LNXSRCDIR="${WORKSPACE}/src/linux"
  45 LNXBINDIR="${WORKSPACE}/deps/linux/build"
  46
  47 # Create build directory
  48 rm -rf "${BUILDDIR}"
  49 mkdir -p "${BUILDDIR}"
  50
  51 # Enter source dir
  52 cd "${SRCDIR}"
  53
  54 # Fix path to linux src in builddir Makefile
  55 sed -i "s#MAKEARGS := -C .*#MAKEARGS := -C ${LNXSRCDIR}#" "${LNXBINDIR}"/Makefile
  56
  57 # Get kernel version from source tree
  58 cd "${LNXBINDIR}"
  59 KVERSION=$(make kernelversion)
  60 cd -
  61
  62 # kernels 3.10 to 3.10.13 and 3.11 to 3.11.2 introduce a deadlock in the
  63 # timekeeping subsystem. We want those build to fail.
  64 if { vergte "$KVERSION" "3.10" && verlte "$KVERSION" "3.10.13"; } || \
  65    { vergte "$KVERSION" "3.11" && verlte "$KVERSION" "3.11.2"; }; then
  66
  67     set +e
  68
  69     # Build modules
  70     KERNELDIR="${LNXBINDIR}" make -j${NPROC} V=1 CONFIG_LTTNG=m
  71
  72     # We expect this build to fail, if it doesn't, fail the job.
  73     if [ "$?" -eq 0 ]; then
  74         exit 1
  75     fi
  76
  77     # We have to publish at least one file or the build will fail
  78     echo "This kernel is broken, there is a deadlock in the timekeeping subsystem." > "${BUILDDIR}/BROKEN.txt"
  79
  80     set -e
  81
  82 else # Regular build
  83
  84     # Build modules
  85     KERNELDIR="${LNXBINDIR}" make -j${NPROC} V=1 CONFIG_LTTNG=m
  86
  87     # Install modules to build dir
  88     KERNELDIR="${LNXBINDIR}" make INSTALL_MOD_PATH="${BUILDDIR}" modules_install
  89 fi
  90
  91 # EOF