bootstrap

#!/bin/sh
# bootstrap a xapian source tree obtained from SVN to produce a tree like
# you'd get from unpacking the results of "make dist"
#
# Copyright (C) 2002,2003,2004,2005,2006,2007,2008,2009,2010,2011 Olly Betts
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301
# USA

if [ "$1" = "--help" ] ; then
  echo "$0 [--without-autotools|--clean]"
  exit 0
fi

trap 'echo "Bootstrap failed"' EXIT
set -e

# The variables which specify the autotools to use.  And doxygen.
autotools="AUTORECONF AUTOCONF AUTOHEADER AUTOM4TE AUTOMAKE ACLOCAL LIBTOOLIZE DOXYGEN"

# Tool for downloading a file from a URL (currently wget or curl).
FETCH_URL_TOOL=

check_sha1sum() {
  checksum=$1
  tarball=$2

  # BusyBox sha1sum doesn't know --version so just run to see it it works.
  if echo "$checksum  $tarball"|${SHA1SUM-sha1sum} -c 2>/dev/null ; then
    : # Checksum OK!
  else
    # Either sha1sum wasn't installed, or the checksum failed to match.
    case `openssl sha1 "$tarball" 2>/dev/null` in
      *$checksum) ;;
      "") echo "Need sha1sum or openssl installed to check SHA1 checksums"
	exit 1
	;;
      *)
	echo "$tarball: computed SHA1 checksum did NOT match"
	exit 1
	;;
    esac
  fi
}

lazy_build() {
  package=$1
  basename=$package-$2
  ext=$3
  checksum=$4
  tarball=$basename.$ext
  case $basename in
    *[24680][a-z]) basename=`echo "$basename"|sed 's/[a-z]$//'` ;;
  esac

  # Create the stamp file in INST so that rerunning bootstrap after
  # "rm -rf INST" recovers nicely.
  stamp=../INST/$package.stamp

  # Download the tarball if required.
  if [ ! -f "$tarball" ] ; then
    if [ -z "$FETCH_URL_TOOL" ] ; then
      if ${WGET-wget} --version > /dev/null 2>&1 ; then
	FETCH_URL_TOOL=${WGET-wget}
      elif ${CURL-curl} --version > /dev/null 2>&1 || [ "$?" = 2 ] ; then
	# curl --version exists with code 2.
	FETCH_URL_TOOL="${CURL-curl} -O"
      else
	echo "Neither wget nor curl found - set WGET or CURL to the full path," >&2
	echo "or download $url to directory `pwd` by hand and rerun this script." >&2
	exit 1
      fi
    fi
    case $basename in
    doxygen-*)
      $FETCH_URL_TOOL "ftp://ftp.stack.nl/pub/users/dimitri/$tarball" ;;
    *[13579][a-z])
      # GNU alpha release
      $FETCH_URL_TOOL "ftp://alpha.gnu.org/gnu/$package/$tarball" ;;
    *)
      $FETCH_URL_TOOL "ftp://ftp.gnu.org/gnu/$package/$tarball" ;;
    esac
  fi

  if [ -f "$stamp" ] ; then
    find_stdout=`find "$stamp" -newer "$tarball" -print`
  else
    find_stdout=
  fi

  if [ -z "$find_stdout" ] ; then
    # Verify the tarball's checksum before building it.
    check_sha1sum "$checksum" "$tarball"

    for f in "$package"-* ; do
      [ "$f" = "$tarball" ] || rm -rf "$f"
    done

    case $ext in
    tar.bz2)
      bzip2 -dc "$tarball"| tar xf - ;;
    *)
      gzip -dc "$tarball"| tar xf - ;;
    esac

    cd "$basename"
    # Fix doxygen/Qt stupid and pointless enumerating of Mac OS X releases
    # which stops it building on each new OS X release.
    if [ -f qtools/qglobal.h ] ; then
	sed 's!^[	 ]*#[	 ]*error.*Mac *OS *X is unsupported!// &!' \
	    qtools/qglobal.h > qtools/qglobal.hT
	mv qtools/qglobal.hT qtools/qglobal.h
    fi
    if test -n "$AUTOCONF" ; then
      ./configure --prefix "$instdir" AUTOCONF="$AUTOCONF"
    else
      ./configure --prefix "$instdir"
    fi
    make
    make install
    cd ..
    rm -rf "$basename"

    touch "$stamp"
  fi
}

handle_svn_external() {
  path=$1
  revopt=$2
  url=$3
  if [ ! -d "$path" ] ; then
    git svn init "$url" "$path"/
  fi
  (cd "$path" && git svn fetch "$revopt" && git reset --hard `git svn log "$revopt" --show-commit|perl -e '<>;<>=~/\| ([0-9a-f]+)/ ; print $1'`)
}

curdir=`pwd`

# cd to srcdir if we aren't already there.
srcdir=`echo "$0"|sed 's!/*[^/]*$!!'`
case $srcdir in
  ""|.)
    srcdir=. ;;
  *)
    cd "$srcdir" ;;
esac

if [ -d ".git" ] ; then
  for emptydir in xapian-applications/omega/m4 xapian-bindings/m4 ; do
    if test -d "$emptydir" ; then
      :
    else
      parent=`echo "$emptydir"|sed 's,/[^/]*$,,'`
      if test -d "$parent" ; then
	mkdir "$emptydir"
      fi
    fi
  done

  sed '/^\(swig\|xapian-applications\/omega\/common$\)/d' .git/info/exclude > .git/info/exclude~
  cat <<END >> .git/info/exclude~
swig
xapian-applications/omega/common
END
  if cmp .git/info/exclude~ .git/info/exclude > /dev/null ; then
    rm .git/info/exclude~
  else
    mv .git/info/exclude~ .git/info/exclude
  fi

  if git config --get svn-remote.svn.url >/dev/null ; then
    # git repo checked out with git-svn from svn.xapian.org.

    # Pull in each svn:externals as a separate little git repo:
    git svn show-externals | while read path revopt url ; do
      # For example:
      # /swig -r12724 svn://svn.tartarus.org/swig/trunk/
      if [ -n "$url" ] ; then
	case $path in
	/*)
	  path=`echo "$path"|sed 's,^/,,'`
	  handle_svn_external "$path" "$revopt" "$url"
	  ;;
	esac
      fi
    done
  else
    # git repo cloned from git.xapian.org or a mirror of it.

    # FIXME: Currently rev here requires manual update...
    #svn:externals revision for SWIG
    handle_svn_external swig -r12767 svn://svn.tartarus.org/swig/trunk/
  
    # FIXME: Currently rev here requires manual update...
    #svn:externals revision for xapian-applications/omega/common
    # Note: this needs to be the exact revision of the previous change!
    handle_svn_external xapian-applications/omega/common -r14916 svn://svn.xapian.org/xapian/trunk/xapian-core/common
  fi
fi

if [ "$1" = "--without-autotools" ] ; then
  shift
else
  if [ "$1" = "--clean" ] ; then
    shift
    rm -rf INST
  fi

  [ -d INST ] || mkdir INST
  instdir=`pwd`/INST

  [ -d BUILD ] || mkdir BUILD
  cd BUILD

  # The last field is the SHA1 checksum of the tarball.
  lazy_build doxygen 1.5.9 src.tar.gz 6211b850bdaa2198e35546e4299a27774c957ece
  lazy_build autoconf 2.68 tar.bz2 b534c293b22048c022b1ff3a372b9c03f26170b4
  AUTOCONF=$instdir/bin/autoconf \
  lazy_build automake 1.11.1 tar.bz2 44ab0007d8edbe82338e29bdda2f461f43a98818
  lazy_build libtool 2.4 tar.gz 149e9d7a993b643d13149a94d07bbca1085e601c

  for v in $autotools ; do
     tool=`echo "$v"|tr A-Z a-z`
     eval "$v=\"\$instdir\"/bin/$tool;export $v"
  done

  cd ..
fi

case `${LIBTOOLIZE-libtoolize} --version` in
"")
  echo "${LIBTOOLIZE-libtoolize} not found"
  exit 1 ;;
"libtoolize (GNU libtool) 1.4.*")
  echo "${LIBTOOLIZE-libtoolize} is from libtool 1.4 which is too old - libtool 2.2 is required."
  echo "If you have both installed, set LIBTOOLIZE to point to the correct version."
  exit 1 ;;
"libtoolize (GNU libtool) 1.5.*")
  echo "${LIBTOOLIZE-libtoolize} is from libtool 1.5 which is too old - libtool 2.2 is required."
  echo "If you have both installed, set LIBTOOLIZE to point to the correct version."
  exit 1 ;;
esac

ACLOCAL="${ACLOCAL-aclocal} -I `pwd`/xapian-core/m4-macros"

intree_swig=no
# We no longer snapshot xapian-applications/queryserver since it hasn't seen a
# check-in for ages.
modules=
for module in xapian-core xapian-applications/omega swig xapian-bindings ; do
  d=$module
  if [ -f "$d/configure.ac" -o -f "$d/configure.in" ] ; then
    echo "Bootstrapping \`$module'"
    [ -f "$d/preautoreconf" ] && "$d/preautoreconf"

    # If we have a custom INSTALL file, preserve it since autoreconf insists on
    # replacing INSTALL with "generic installation instructions" when --force
    # is used.  Be careful to replace it if autoreconf fails.
    if [ -f "$d/INSTALL" ] ; then
      if grep 'generic installation instructions' "$d/INSTALL" >/dev/null 2>&1 ; then
	:
      else
	mv -f "$d/INSTALL" "$d/INSTALL.preserved-by-bootstrap"
      fi
    fi

    autoreconf_rc=
    if [ swig = "$module" ] ; then
      # SWIG provides its own bootstrapping script.
      curdir=`pwd`
      cd "$d"
      ./autogen.sh || autoreconf_rc=$?
      cd "$curdir"
      # Use the uninstalled wrapper for the in-tree copy of SWIG.
      intree_swig=yes
    else
      # Use --install as debian's autoconf wrapper uses 2.5X if it sees it
      # (but it doesn't check for -i).
      #
      # Use --force so that we update files if autoconf, automake, or libtool
      # has been upgraded.
      ${AUTORECONF-autoreconf} --install --force "$d" || autoreconf_rc=$?
    fi
    if [ -f "$d/INSTALL.preserved-by-bootstrap" ] ; then
      mv -f "$d/INSTALL.preserved-by-bootstrap" "$d/INSTALL"
    fi
    if [ -n "$autoreconf_rc" ] ; then
      exit $autoreconf_rc
    fi
    modules="$modules $module"
  fi
done

# Generate the top-level configure script.
rm -f configure.tmp
cat <<'TOP_OF_CONFIGURE' > configure.tmp
#!/bin/sh
# configure each submodule in a xapian source tree
# Generated by Xapian top-level bootstrap script.
#
# Copyright (C) 2003,2004,2007,2008 Olly Betts
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301
# USA

trap 'echo "configure failed"' EXIT
set -e

# Produced escaped version of command suitable for pasting back into sh
cmd=$0
for a ; do
 case $a in
  *[^-A-Za-z0-9_+=:@/.,]*)
   esc_a=`echo "$a"|sed 's!\([^-A-Za-z0-9_+=:@/.,]\)!\\\\\\1!g'`
   cmd="$cmd $esc_a" ;;
  *)
   cmd="$cmd $a" ;;
 esac
done

here=`pwd`
TOP_OF_CONFIGURE

# Produce an absolute path to srcdir.
srcdir_abs=`pwd`
# This section is unquoted so we can substitute variables.
cat <<MIDDLE_OF_CONFIGURE >> configure.tmp
srcdir="$srcdir_abs"
modules="$modules"
MIDDLE_OF_CONFIGURE

vars=
if [ yes = "$intree_swig" ] ; then
  # We want the path to SWIG to point into srcdir, which isn't known until
  # configure-time, so we need to expand $here in configure.  We can't just set
  # SWIG here and let the case below handle it as that would escape the value
  # such that $here didn't get expanded at all.
  echo ': ${SWIG="$here/swig/preinst-swig"}' >> configure.tmp
  echo "export SWIG" >> configure.tmp
  vars=' SWIG=$here/swig/preinst-swig'
  # Kill any existing setting of SWIG so that we don't try to handle it again
  # below.
  SWIG=
fi
for tool in SWIG $autotools ; do
  eval "val=\$$tool"
  if [ -n "$val" ] ; then
    echo ': ${'"$tool=\"$val\""'}' >> configure.tmp
    echo "export $tool" >> configure.tmp
    vars="$vars $tool='"`echo "$val"|sed 's/\(['"\\'"']\)/\\\1/g'`"'"
  fi
done
if [ -n "$vars" ] ; then
  # $vars will always have a leading space.
  echo "set$vars "'"$@"' >> configure.tmp
fi

cat <<'END_OF_CONFIGURE' >> configure.tmp
dirs=
XAPIAN_CONFIG=$here/xapian-core/xapian-config
for d in $modules ; do
  if [ "$here" = "$srcdir" ] ; then
    configure=./configure
    configure_from_here=$d/configure
  else
    configure=$srcdir/$d/configure
    configure_from_here=$configure
  fi
  if [ -f "$configure_from_here" ] ; then
    if [ -d "$d" ] ; then : ; else
      case $d in
      xapian-applications/*) [ -d xapian-applications ] || mkdir xapian-applications ;;
      esac
      mkdir "$d"
    fi
    echo "Configuring \`$d'"
    # Use a shared config.cache for speed and to save a bit of diskspace, but
    # don't share it with SWIG just in case it manages to probe and cache
    # different answers (e.g. because it uses a C compiler).
    case $d in
    swig)
      cd "$d" && "$configure" ${1+"$@"}
      ;;
    xapian-core)
      cd "$d" && "$configure" --enable-maintainer-mode --cache-file="$here/config.cache" ${1+"$@"}
      ;;
    *)
      cd "$d" && "$configure" --enable-maintainer-mode --cache-file="$here/config.cache" XAPIAN_CONFIG="$XAPIAN_CONFIG" ${1+"$@"}
      ;;
    esac
    cd "$here"
    dirs="$dirs $d"
  fi
done

rm -f Makefile.tmp
cat <<EOF > Makefile.tmp
# Makefile generated by:
# $cmd
EOF
targets='all install uninstall install-strip clean distclean mostlyclean maintainer-clean dist check distcheck'
for target in $targets ; do
  echo
  echo "$target:"
  for d in $dirs ; do
    case $d,$target in
    swig,install*|swig,uninstall)
      # Nothing to do with swig when installing/uninstalling.
      ;;
    swig,dist|swig,check|swig,distcheck|swig,all)
      # Need to ensure swig is built before "make dist", "make check", etc.
      echo "	cd $d && \$(MAKE)" ;;
    swig,mostlyclean)
      echo "	cd $d && \$(MAKE) clean" ;;
    xapian-bindings,distcheck)
      # FIXME: distcheck doesn't currently work for xapian-bindings because
      # xapian-core isn't installed.
      echo "	cd $d && \$(MAKE) check && \$(MAKE) dist" ;;
    *)
      echo "	cd $d && \$(MAKE) $target" ;;
    esac
  done
  case $target in
    distclean|maintainer-clean) echo "	rm -f Makefile config.cache" ;;
  esac
done >> Makefile.tmp
cat <<EOF >> Makefile.tmp

recheck:
	$cmd

Makefile: $srcdir/configure
	$cmd

$srcdir/configure: $srcdir/bootstrap
	$srcdir/bootstrap

.PHONY: $targets recheck
EOF
mv -f Makefile.tmp Makefile
trap - EXIT
echo "Configured successfully - now run \"${MAKE-make}\""
END_OF_CONFIGURE

chmod +x configure.tmp
mv -f configure.tmp configure

trap - EXIT
echo "Bootstrapped successfully - now run \"$srcdir/configure\" and \"${MAKE-make}\""