copy-builtin

   1 #!/bin/bash
   2
   3 set -e
   4
   5 usage()
   6 {
   7         echo "usage: $0 <kernel source tree>" >&2
   8         exit 1
   9 }
  10
  11 [ "$#" -eq 1 ] || usage
  12 KERNEL_DIR="$(readlink --canonicalize-existing "$1")"
  13
  14 MODULES=()
  15 for MODULE_DIR in module/*
  16 do
  17         [ -d "$MODULE_DIR" ] || continue
  18         MODULES+=("${MODULE_DIR##*/}")
  19 done
  20
  21 if ! [ -e 'spl_config.h' ]
  22 then
  23         echo >&2
  24         echo "    $0: you did not run configure, or you're not in the SPL source directory." >&2
  25         echo "    $0: run configure with --with-linux=$KERNEL_DIR and --enable-linux-builtin." >&2
  26         echo >&2
  27         exit 1
  28 fi
  29
  30 make clean || true
  31
  32 rm -rf "$KERNEL_DIR/include/spl" "$KERNEL_DIR/spl"
  33 cp --recursive include "$KERNEL_DIR/include/spl"
  34 cp --recursive module "$KERNEL_DIR/spl"
  35 cp spl_config.h "$KERNEL_DIR/"
  36 cp spl.release.in "$KERNEL_DIR/"
  37
  38 adjust_obj_paths()
  39 {
  40         local FILE="$1"
  41         local LINE OBJPATH
  42
  43         while IFS='' read -r LINE
  44         do
  45                 OBJPATH="${LINE#\$(MODULE)-objs += }"
  46                 if [ "$OBJPATH" = "$LINE" ]
  47                 then
  48                         echo "$LINE"
  49                 else
  50                         echo "\$(MODULE)-objs += ${OBJPATH##*/}"
  51                 fi
  52         done < "$FILE" > "$FILE.new"
  53         mv "$FILE.new" "$FILE"
  54 }
  55
  56 for MODULE in "${MODULES[@]}"
  57 do
  58         adjust_obj_paths "$KERNEL_DIR/spl/$MODULE/Makefile"
  59         sed -i.bak '/obj =/d' "$KERNEL_DIR/spl/$MODULE/Makefile"
  60         sed -i.bak '/src =/d' "$KERNEL_DIR/spl/$MODULE/Makefile"
  61 done
  62
  63 cat > "$KERNEL_DIR/spl/Kconfig" <<"EOF"
  64 config SPL
  65         tristate "Solaris Porting Layer (SPL)"
  66         help
  67           This is the SPL library from the ZFS On Linux project.
  68
  69           See http://zfsonlinux.org/
  70
  71           To compile this library as a module, choose M here.
  72
  73           If unsure, say N.
  74 EOF
  75
  76 {
  77         cat <<-"EOF"
  78         SPL_MODULE_CFLAGS  = -I$(srctree)/include/spl
  79         SPL_MODULE_CFLAGS += -include $(srctree)/spl_config.h
  80         export SPL_MODULE_CFLAGS
  81
  82         obj-$(CONFIG_SPL) :=
  83         EOF
  84
  85         for MODULE in "${MODULES[@]}"
  86         do
  87                 echo 'obj-$(CONFIG_SPL) += ' "$MODULE/"
  88         done
  89 } > "$KERNEL_DIR/spl/Kbuild"
  90
  91 add_after()
  92 {
  93         local FILE="$1"
  94         local MARKER="$2"
  95         local NEW="$3"
  96         local LINE
  97
  98         while IFS='' read -r LINE
  99         do
 100                 echo "$LINE"
 101
 102                 if [ -n "$MARKER" -a "$LINE" = "$MARKER" ]
 103                 then
 104                         echo "$NEW"
 105                         MARKER=''
 106                         if IFS='' read -r LINE
 107                         then
 108                                 [ "$LINE" != "$NEW" ] && echo "$LINE"
 109                         fi
 110                 fi
 111         done < "$FILE" > "$FILE.new"
 112
 113         mv "$FILE.new" "$FILE"
 114 }
 115
 116 add_after "$KERNEL_DIR/Kconfig" 'source "arch/$SRCARCH/Kconfig"' 'source "spl/Kconfig"'
 117 # We must take care to build SPL before ZFS, otherwise the symbols required
 118 # to link ZFS will not be available.
 119 sed -i 's~mm/ fs/~mm/ spl/ fs/~' "$KERNEL_DIR/Makefile"
 120
 121 echo >&2
 122 echo "    $0: done." >&2
 123 echo "    $0: now you can build the kernel with SPL support." >&2
 124 echo "    $0: make sure you enable SPL support (CONFIG_SPL) before building." >&2
 125 echo >&2
 126