view host-tools.sh @ 792:b364ed2adf49

Fedora 11 hasn't got "which", so move the busybox build up and the host toolchain symlinks down to the end. Make sure toybox patch replaces busybox patch, and host toolchain ar replaces busybox ar.
author Rob Landley <rob@landley.net>
date Fri, 31 Jul 2009 01:00:45 -0500
parents db06a8c1bfed
children 5f793a1ca658
line wrap: on
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#!/bin/bash

# Get lots of predefined environment variables and shell functions.

source sources/include.sh || exit 1

echo -e "$HOST_COLOR"
echo "=== Building $STAGE_NAME"

export LC_ALL=C

blank_tempdir "${WORK}"
mkdir -p "${HOSTTOOLS}" || dienow

# If we want to record the host command lines, so we know exactly what commands
# the build uses, set up a wrapper that does that.

if [ ! -z "$RECORD_COMMANDS" ]
then
  if [ ! -f "$BUILD/wrapdir/wrappy" ]
  then
    echo setup wrapdir

    # Build the wrapper and install it into build/wrapdir/wrappy
    blank_tempdir "$BUILD/wrapdir"
    $CC -Os "$SOURCES/toys/wrappy.c" -o "$BUILD/wrapdir/wrappy"  || dienow

    # Loop through each $PATH element and create a symlink to the wrapper with
    # that name.

    for i in $(echo "$PATH" | sed 's/:/ /g')
    do
      for j in $(ls $i)
      do
        [ -f "$BUILD/wrapdir/$j" ] || ln -s wrappy "$BUILD/wrapdir/$j"
      done
    done

    # Adjust things to use wrapper directory

    export WRAPPY_REALPATH="$PATH"
    PATH="$BUILD/wrapdir"
  fi

# If we're not recording the host command lines, then populate a directory
# with host versions of all the command line utilities we're going to install
# into root-filesystem.  When we're done, PATH can be set to include just this
# directory and nothing else.

# This serves three purposes:
#
# 1) Enumerate exactly what we need to build the system, so we can make sure
#    root-filesystem has everything it needs to rebuild us.  If anything is
#    missing from this list, the resulting root-filesystem probably won't have
#    it either, so it's nice to know as early as possible that we actually
#    needed it.
#
# 2) Quick smoke test that the versions of the tools we're using can compile
#    everything from source correctly, and thus root-filesystem should be able
#    to rebuild from source using those same tools.
#
# 3) Reduce variation from distro to distro.  The build always uses the
#    same command line utilities no matter where we're running, because we
#    provide our own.

else

  # Use the new tools we build preferentially, as soon as they become
  # available.

  PATH="$HOSTTOOLS:$PATH"

  # Start by building busybox.  We have no idea what strange things our host
  # system has (or lacks, such as "which"), so throw busybox at it first
  # thing.

  if [ ! -f "${HOSTTOOLS}/busybox" ]
  then
    setupfor busybox &&
    make allyesconfig KCONFIG_ALLCONFIG="${SOURCES}/trimconfig-busybox" &&
    make -j $CPUS &&
    make busybox.links &&
    cp busybox "${HOSTTOOLS}"

    [ $? -ne 0 ] && dienow

    for i in $(sed 's@.*/@@' busybox.links)
    do
      [ ! -f "${HOSTTOOLS}/$i" ] &&
        (ln -sf busybox "${HOSTTOOLS}/$i" || dienow)
    done
    cd ..

    cleanup busybox
  fi

  # Build toybox

  if [ ! -f "${HOSTTOOLS}/toybox" ]
  then
    setupfor toybox &&
    make defconfig &&
    make || dienow
    if [ -z "$USE_TOYBOX" ]
    then
      mv toybox "$HOSTTOOLS" &&
      ln -sf toybox "$HOSTTOOLS"/patch &&
      ln -sf toybox "$HOSTTOOLS"/netcat || dienow
    else
      make install_flat PREFIX="${HOSTTOOLS}" || dienow
    fi
    cd ..

    cleanup toybox
  fi

  # Create symlinks to the host toolchain.  We need a usable existing host
  # toolchain in order to build anything else (even a new host toolchain),
  # and we don't really want to have to care what the host type is, so
  # just use the toolchain that's already there.

  for i in ar as nm cc make ld gcc
  do
    [ ! -f "${HOSTTOOLS}/$i" ] &&
      (ln -sf `PATH="$OLDPATH" $HOSTTOOLS/which $i` "${HOSTTOOLS}/$i" || dienow)
  done

  # We now have all the tools we need in $HOSTTOOLS, so trim the $PATH to
  # remove the old ones.

  PATH="${HOSTTOOLS}"
fi

# This is optionally used by root-filesystem to accelerate native builds when
# running under qemu.  It's not used to build root-filesystem, or to build
# the cross compiler, but it needs to be on the host system in order to
# use the distcc acceleration trick.

# Note that this one we can use off of the host, it's used on the host where
# the system image runs.  The build doesn't actually use it, we only bother
# to build it at all here as a convenience for run-from-build.sh.

# Build distcc (if it's not in $PATH)
if [ -z "$(which distccd)" ]
then
  setupfor distcc &&
  ./configure --with-included-popt --disable-Werror &&
  make -j "$CPUS" &&
  cp distcc distccd "${HOSTTOOLS}" &&
  cd ..

  cleanup distcc
fi

# Build genext2fs.  We use it to build the ext2 image to boot qemu with
# in system-image.sh.

if [ ! -f "${HOSTTOOLS}"/genext2fs ]
then
  setupfor genext2fs &&
  ./configure &&
  make -j $CPUS &&
  cp genext2fs "${HOSTTOOLS}" &&
  cd ..

  cleanup genext2fs
fi

# Build e2fsprogs.

# Busybox used to provide ext2 utilities (back around 1.2.2), but the
# implementation was horrible and got removed.  Someday the new Lua
# toybox should provide these.

# This mostly isn't used creating a system image, which uses genext2fs instead.
# If SYSIMAGE_HDA_MEGS is > 64, it'll resize2fs because genext2fs is
# unreasonably slow at creating large files.

# The hdb.img of run-emulator.sh and run-from-build.sh uses e2fsprogs'
# fsck.ext2 and tune2fs.  These are installed by default in most distros
# (which genext2fs isn't), and genext2fs doesn't have ext3 support anyway.

if [ ! -f "${HOSTTOOLS}"/mke2fs ]
then
  setupfor e2fsprogs &&
  ./configure --disable-tls --enable-htree &&
  make -j "$CPUS" &&
  cp misc/{mke2fs,tune2fs} resize/resize2fs "${HOSTTOOLS}" &&
  cp e2fsck/e2fsck "$HOSTTOOLS"/fsck.ext2 &&
  cd ..

  cleanup e2fsprogs
fi

# Squashfs is an alternate packaging option.

if [ ! -f "${HOSTTOOLS}"/mksquashfs ]
then
  setupfor squashfs &&
  cd squashfs-tools &&
  make -j $CPUS &&
  cp mksquashfs unsquashfs "${HOSTTOOLS}" &&
  cd ..

  cleanup squashfs
fi

# Here's some stuff that isn't used to build a cross compiler or system
# image, but is used by run-from-build.sh.  By default we assume it's
# installed on the host you're running system images on (which may not be
# the one you're building them on).

# Either build qemu from source, or symlink it.

if [ ! -f "${HOSTTOOLS}"/qemu ]
then
  if [ ! -z "$HOST_BUILD_EXTRA" ]
  then

    # Build qemu.  Note that this is _very_slow_.  (It takes about as long as
    # building a system image from scratch, including the cross compiler.)

    # It's also ugly: its wants to populate a bunch of subdirectories under
    # --prefix, and we can't just install it in host-temp and copy out what
    # we want because the pc-bios directory needs to exist at a hardwired
    # absolute path, so we do the install by hand.

    setupfor qemu &&
    cp "$SOURCES"/patches/openbios-ppc pc-bios/openbios-ppc &&
    sed -i 's@datasuffix=".*"@datasuffix="/pc-bios"@' configure &&
    ./configure --disable-gfx-check --prefix="$HOSTTOOLS" &&
    make -j $CPUS &&
    # Copy the executable files and ROM files
    cp $(find -type f -perm +111 -name "qemu*") "$HOSTTOOLS" &&
    cp -r pc-bios "$HOSTTOOLS" &&
    cd ..

    cleanup qemu
  else
    # Symlink qemu out of the host, if found.  Since run-from-build.sh uses
    # $PATH=.../build/host if it exists, add the various qemu instances to that.

    echo "$OLDPATH" | sed 's/:/\n/g' | while read i
    do
      for j in $(cd "$i"; ls qemu* 2>/dev/null)
      do
        ln -s "$i/$j" "$HOSTTOOLS/$j"
      done
    done
  fi
fi

if [ ! -z "$RECORD_COMMANDS" ]
then 
  # Make sure the host tools we just built are also in wrapdir
  for j in $(ls "$HOSTTOOLS")
  do
    [ -e "$BUILD/wrapdir/$j" ] || ln -s wrappy "$BUILD/wrapdir/$j"
  done
fi

echo -e "\e[32mHost tools build complete.\e[0m"