built-in.sh

   1 #!/bin/bash
   2
   3 set -e
   4
   5 usage() {
   6         echo "usage: $0 <kernel source tree>" >&2
   7         exit 1
   8 }
   9
  10 [ "$#" -eq 1 ] || usage
  11 KERNEL_DIR="$(readlink --canonicalize-existing "$1")"
  12
  13 # Symlink the lttng-modules directory in the kernel source
  14 ln -sf "$(pwd)" "${KERNEL_DIR}/lttng"
  15
  16 # Graft ourself to the kernel build system
  17 echo 'source "lttng/Kconfig"' >> "${KERNEL_DIR}/Kconfig"
  18 sed -i 's#+= kernel/#+= kernel/ lttng/#' "${KERNEL_DIR}/Makefile"
  19
  20 echo >&2
  21 echo "    $0: done." >&2
  22 echo "    $0: now you can build the kernel with LTTng support." >&2
  23 echo "    $0: make sure you enable it (CONFIG_LTTNG) before building." >&2
  24 echo >&2