# Install Linux kernel headers.

setupfor linux

# Expand and copy kernel .config.

getconfig linux > mini.conf &&
test $SYSIMAGE_TYPE == "initramfs" &&
echo "CONFIG_BLK_DEV_INITRD=y" >> mini.conf

make ARCH=$(BOOT_KARCH:-$KARCH) KCONFIG_ALLCONFIG=mini.conf $LINUX_FLAGS \
  $VERBOSITY allnoconfig >/dev/null &&
mkdir -p "$STAGE_DIR/src" &&
cp .config "$STAGE_DIR/src/config-linux"


# Install Linux kernel headers (for use by uClibc).
make -j $CPUS headers_install ARCH="$(KARCH)" INSTALL_HDR_PATH="$STAGE_DIR" \
  $VERBOSITY &&
# This makes some very old package builds happy.
test ! -e "$STAGE_DIR/include/asm/page.h" &&
  ln -sf ../sys/user.h "$STAGE_DIR/include/asm/page.h"

cleanup

# Remove debris the kernel puts in there for no apparent reason.

find "$STAGE_DIR/include" -name ".install" -print0 -or -name "..install.cmd" -print0 | xargs -0 rm
(CommandList
  children: [
    (C {(setupfor)} {(linux)})
    (AndOr
      children: [
        (SimpleCommand
          words: [{(getconfig)} {(linux)}]
          redirects: [(Redir op_id:Redir_Great fd:-1 arg_word:{(mini.conf)} spids:[17])]
        )
        (AndOr
          children: [
            (C {(Lit_Other "[")} {(DQ ($ VSub_Name "$SYSIMAGE_TYPE"))} {(Lit_Other "=") (Lit_Other "=")} 
              {(DQ (initramfs))} {(Lit_Other "]")}
            )
            (SimpleCommand
              words: [{(echo)} {(DQ ("CONFIG_BLK_DEV_INITRD=y"))}]
              redirects: [(Redir op_id:Redir_DGreat fd:-1 arg_word:{(mini.conf)} spids:[46])]
            )
          ]
          op_id: Op_DAmp
        )
      ]
      op_id: Op_DAmp
    )
    (AndOr
      children: [
        (SimpleCommand
          words: [
            {(make)}
            {(Lit_VarLike "ARCH=") 
              (BracedVarSub
                token: <VSub_Name BOOT_KARCH>
                suffix_op: (StringUnary op_id:VTest_ColonHyphen arg_word:{($ VSub_Name "$KARCH")})
                spids: [54 58]
              )
            }
            {(Lit_VarLike "KCONFIG_ALLCONFIG=") (mini.conf)}
            {($ VSub_Name "$LINUX_FLAGS")}
            {($ VSub_Name "$VERBOSITY")}
            {(allnoconfig)}
          ]
          redirects: [(Redir op_id:Redir_Great fd:-1 arg_word:{(/dev/null)} spids:[71])]
        )
        (AndOr
          children: [
            (C {(mkdir)} {(-p)} {(DQ ($ VSub_Name "$STAGE_DIR") (/src))})
            (C {(cp)} {(.config)} {(DQ ($ VSub_Name "$STAGE_DIR") (/src/config-linux))})
          ]
          op_id: Op_DAmp
        )
      ]
      op_id: Op_DAmp
    )
    (AndOr
      children: [
        (C {(make)} {(-j)} {($ VSub_Name "$CPUS")} {(headers_install)} 
          {(Lit_VarLike "ARCH=") (DQ (${ VSub_Name KARCH))} {(Lit_VarLike "INSTALL_HDR_PATH=") (DQ ($ VSub_Name "$STAGE_DIR"))} {($ VSub_Name "$VERBOSITY")}
        )
        (AndOr
          children: [
            (C {(Lit_Other "[")} {(KW_Bang "!")} {(-e)} 
              {(DQ ($ VSub_Name "$STAGE_DIR") (/include/asm/page.h))} {(Lit_Other "]")}
            )
            (C {(ln)} {(-sf)} {(../sys/user.h)} {(DQ ($ VSub_Name "$STAGE_DIR") (/include/asm/page.h))})
          ]
          op_id: Op_DAmp
        )
      ]
      op_id: Op_DAmp
    )
    (C {(cleanup)})
    (Pipeline
      children: [
        (C {(find)} {(DQ ($ VSub_Name "$STAGE_DIR") (/include))} {(-name)} {(DQ (.install))} {(-print0)} 
          {(-or)} {(-name)} {(DQ (..install.cmd))} {(-print0)}
        )
        (C {(xargs)} {(-0)} {(rm)})
      ]
      negated: False
    )
  ]
)