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 done
  60
  61 cat > "$KERNEL_DIR/spl/Kconfig" <<"EOF"
  62 config SPL
  63         tristate "Solaris Porting Layer (SPL)"
  64         help
  65           This is the SPL library from the ZFS On Linux project.
  66
  67           See http://zfsonlinux.org/
  68
  69           To compile this library as a module, choose M here.
  70
  71           If unsure, say N.
  72 EOF
  73
  74 {
  75         cat <<-"EOF"
  76         SPL_MODULE_CFLAGS  = -I$(srctree)/include/spl
  77         SPL_MODULE_CFLAGS += -include $(srctree)/spl_config.h
  78         export SPL_MODULE_CFLAGS
  79
  80         obj-$(CONFIG_SPL) :=
  81         EOF
  82
  83         for MODULE in "${MODULES[@]}"
  84         do
  85                 echo 'obj-$(CONFIG_SPL) += ' "$MODULE/"
  86         done
  87 } > "$KERNEL_DIR/spl/Kbuild"
  88
  89 add_after()
  90 {
  91         local FILE="$1"
  92         local MARKER="$2"
  93         local NEW="$3"
  94         local LINE
  95
  96         while IFS='' read -r LINE
  97         do
  98                 echo "$LINE"
  99
 100                 if [ -n "$MARKER" -a "$LINE" = "$MARKER" ]
 101                 then
 102                         echo "$NEW"
 103                         MARKER=''
 104                         if IFS='' read -r LINE
 105                         then
 106                                 [ "$LINE" != "$NEW" ] && echo "$LINE"
 107                         fi
 108                 fi
 109         done < "$FILE" > "$FILE.new"
 110
 111         mv "$FILE.new" "$FILE"
 112 }
 113
 114 add_after "$KERNEL_DIR/Kconfig" 'source "arch/$SRCARCH/Kconfig"' 'source "spl/Kconfig"'
 115 # We must take care to build SPL before ZFS, else module initialization order will be wrong
 116 sed -i 's#kernel/ mm/ fs/#kernel/ mm/ spl/ fs/#' "$KERNEL_DIR/Makefile"
 117
 118 echo >&2
 119 echo "    $0: done." >&2
 120 echo "    $0: now you can build the kernel with SPL support." >&2
 121 echo "    $0: make sure you enable SPL support (CONFIG_SPL) before building." >&2
 122 echo >&2
 123