bootstrap

#!/bin/sh
# bootstrap a xapian source tree obtained from git to produce a tree like
# you'd get from unpacking the results of "make dist"
#
copyright='
# Copyright (C) 2002,2003,2004,2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016,2017 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
  cat <<__END__
$0 [--ftp] [--download-tools=(always|ifneeded|never)] [--clean] [MODULE...]

The default is to bootstrap all known modules.  Any modules which have a
file called ".nobootstrap" in their top-level will be skipped.
__END__
  exit 0
fi

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

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

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

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

  if [ -z "$SHA1SUM_TOOL" ] ; then
    for SHA1SUM_TOOL in \
	'${SHA1SUM-sha1sum} 2>/dev/null|cut -d\  -f1' \
	'${SHASUM-shasum} 2>/dev/null|cut -d\  -f1' \
	'${OPENSSL-openssl} sha1 2>/dev/null|sed "s/.* //"' \
	'' ; do
      if [ -z "$SHA1SUM_TOOL" ] ; then
	echo <<'END'
Need sha1sum or shasum or openssl installed to check SHA1 checksums.
Set environment variable SHA1SUM, SHASUM or OPENSSL if the tool isn't on
your PATH.
END
	exit 1
      fi
      r=`:|eval "$SHA1SUM_TOOL"`
      [ X"$r" != Xda39a3ee5e6b4b0d3255bfef95601890afd80709 ] || break
    done
  fi
  r=`< $tarball eval "$SHA1SUM_TOOL"`
  if [ X"$r" != X"$checksum" ] ; then
    echo "$tarball: computed SHA1 checksum did NOT match"
    echo "computed: $r with $SHA1SUM_TOOL"
    echo "expected: $checksum"
    ls -l $tarball
    file $tarball || true
    mv "$tarball" "$tarball.$r"
    echo "Renamed $tarball to $tarball.$r"
    exit 1
  fi
}

check_at_least() {
  v1=$1
  v2=$2
  save_IFS=$IFS
  IFS=.
  set x $v1
  for v in $v2 ; do
    shift
    if [ "$1" != "$v" ] ; then
      if [ "$1" -lt "$v" ] ; then
	IFS=$save_IFS
	return 1
      fi
      break
    fi
  done
  IFS=$save_IFS
  return 0
}

lazy_build() {
  package=$1
  binary=$2
  version=$3

  case $download_tools in
    always) ;;
    never)
      return 1
      ;;
    *)
      if [ -n $binary ] ; then
	# Check if a new enough version is already installed.
	version_installed=`"$binary" --version 2>/dev/null|sed '1,1 s/.* //p;d'`
	if [ -n "$version_installed" ] ; then
	  # Fast track equality.
	  if [ "$version_installed" = "$version" ] ; then
	    echo "$binary $version_installed installed, exactly what's needed"
	    return 1
	  fi
	  if check_at_least "$version_installed" "$version" ; then
	    echo "$binary $version_installed installed >= $version required"
	    return 1
	  fi
	fi
      fi
      ;;
  esac

  basename=$package-$version
  ext=$4
  checksum=$5

  if [ "$ext" = "tar.xz" ] ; then
    if [ -z "$xz_ok" ] ; then
      if ${XZ-xz} --version > /dev/null 2>&1 ; then
	xz_ok=1
      else
	xz_ok=0
      fi
    fi
    if [ "$xz_ok" = 0 ] ; then
      shift 2
      ext=$4
      checksum=$5
    fi
  fi
  if [ "$ext" = "tar.bz2" ] ; then
    if [ -z "$bz2_ok" ] ; then
      # bzip2 --version doesn't exit with code 0 in upstream version (though
      # Debian at least patch this bug), so use --help to check it.
      if bzip2 --help > /dev/null 2>&1 ; then
	bz2_ok=1
      else
	bz2_ok=0
      fi
    fi
    if [ "$bz2_ok" = 0 ] ; then
      shift 2
      ext=$4
      checksum=$5
    fi
  fi
  tarball=$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} -O-"
      elif ${CURL-curl} --version > /dev/null 2>&1 || [ "$?" = 2 ] ; then
	# curl --version exits with code 2.
	# -L is needed to follow HTTP redirects.
	FETCH_URL_TOOL="${CURL-curl} -L"
      elif ${LWP_REQUEST-lwp-request} -v > /dev/null 2>&1 || [ "$?" = 9 -o "$?" = 255 ] ; then
	# lwp-request -v exits with code 9 (5.810) or 255 (6.03)
	FETCH_URL_TOOL="${LWP_REQUEST-lwp-request} -mGET"
      else
	cat <<END >&2
Neither wget nor curl nor lwp-request found - install one of them or if already
installed, set WGET, CURL or LWP_REQUEST to the full path.  Alternatively,
download $url
to directory `pwd`
then rerun this script.
END
	exit 1
      fi
    fi
    case $basename in
    file-*)
      if [ "$use_ftp" = yes ] ; then
	url="ftp://ftp.astron.com/pub/file/$tarball"
      else
	url="http://fossies.org/unix/misc/$tarball"
      fi ;;
    *[13579][a-z])
      # GNU alpha release
      if [ "$use_ftp" = yes ] ; then
	url="ftp://alpha.gnu.org/gnu/$package/$tarball"
      else
	url="http://alpha.gnu.org/gnu/$package/$tarball"
      fi ;;
    *)
      if [ "$use_ftp" = yes ] ; then
	url="ftp://ftp.gnu.org/gnu/$package/$tarball"
      else
	url="http://ftpmirror.gnu.org/$package/$tarball"
      fi ;;
    esac
    rm -f download.tmp
    echo "Downloading <$url>"
    $FETCH_URL_TOOL "$url" > download.tmp && mv download.tmp "$tarball"
  fi

  if [ -f "$stamp" ] ; then
    find_stdout=`find "$tarball" ../patches/"$package"/* -newer "$stamp" -print 2> /dev/null||true`
  else
    find_stdout=force
  fi

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

    # Remove tarballs of other versions.
    for f in "$package"-* ; do
      [ "$f" = "$tarball" ] || rm -rf "$f"
    done

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

    cd "$basename"

    if [ ! -f "../../patches/$package/series" ] ; then
      cat <<END >&2
No patch series file 'patches/$package/series' - if there are no patches,
this should just be an empty file.
END
      exit 1
    fi
    echo "Applying patches from $package/series"
    sed -n 's/[	 ]*\(#.*\)\?$//;/./p' "../../patches/$package/series" | \
	while read p ; do
      echo "Applying patch $package/$p"
      patch -p1 < "../../patches/$package/$p"
    done

    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
  return 0
}

handle_git_external() {
  path=$1
  if [ ! -f "$path/.nobootstrap" ] ; then
    rev=$2
    url=$3
    if [ ! -d "$path" ] ; then
      git clone --no-checkout -- "$url" "$path"
    elif (cd "$path" && git reflog "$rev" -- 2>/dev/null) ; then
      : # Already have that revision locally
    else
      (cd "$path" && git fetch)
    fi
    (cd "$path" && git checkout "$rev")
  fi
}

update_config() {
  from=$1
  to=$2
  ts_from=`perl -ne '/^timestamp=(\W?)([-\d]+)$1/ and do {$_=$2;y/-//d;print;exit}' "$from"`
  ts_to=`perl -ne '/^timestamp=(\W?)([-\d]+)$1/ and do {$_=$2;y/-//d;print;exit}' "$to"`
  if [ "$ts_from" -gt "$ts_to" ] ; then
     echo "Updating $to ($ts_to) with $from ($ts_from)"
     # rm first in case the existing file is a symlink.
     rm -f "$to"
     cp "$from" "$to"
  fi
}

curdir=`pwd`

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

# Commit hash to pass to handle_git_external for swig.
swig_git_commit_hash=2c910e47ae788412b95e356c99cef5862808bf9a

# Commit hashes to use for common in omega and letor respectively:
omega_common_commit_hash=bddcf54435286b0363efff94f22529093e85fc89
letor_common_commit_hash=bddcf54435286b0363efff94f22529093e85fc89

if [ ! -d .git ] ; then
  echo "$0: No '.git' directory found - this script should be run from a"
  echo "git repo cloned from git://git.xapian.org/xapian or a mirror of it"
  exit 1
fi

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

if [ -f .git/info/exclude ] ; then
  sed '/^\(swig\|xapian-applications\/omega\/common$\)/d' .git/info/exclude > .git/info/exclude~
else
  [ -d .git/info ] || mkdir .git/info
fi
cat <<END >> .git/info/exclude~
swig
xapian-applications/omega/common
xapian-letor/common
END
if [ -f .git/info/exclude ] &&
   cmp -s .git/info/exclude~ .git/info/exclude ; then
  rm .git/info/exclude~
else
  mv .git/info/exclude~ .git/info/exclude
fi

# If this tree is checked out from the github mirror, use the same access
# method for other things checked out from github (e.g. swig) so we avoid
# firewall issues.  If there's no default remote, the git config command
# will exit with status 1, so ignore that failure.
origin_url=`git config remote.origin.url||:`
case $origin_url in
  *[@/]github.com[:/]*)
    github_base_url=`echo "X$origin_url"|sed 's/^X//;s!\([@/]github.com[:/]\).*!\1!'` ;;
  *)
    github_base_url=https://github.com/ ;;
esac
swig_origin_url=${github_base_url}swig/swig.git

if [ -z "$XAPIAN_COMMON_CLONE_URL" ] ; then
    xapian_common_clone_url=.
else
    xapian_common_clone_url=$XAPIAN_COMMON_CLONE_URL
fi

# Set to 'yes' to use ftp URLs where available.
#
# By default we prefer http downloads as they are more likely to work through
# firewalls.
use_ftp=no

# Set to 'always' to always use a locally installed copy of the autotools
# or 'never' to never download.
#
# By default we check for locally installed versions and use them if they are
# new enough versions.  But e.g. for building releases we want to use a known
# set of versions.
download_tools=ifneeded

while [ "$#" -gt 0 ] ; do
  case $1 in
  --download-tools=*)
    download_tools=`echo "x$1"|sed 's/x--download-tools=//'`
    shift
    continue
    ;;

  --download-tools)
    download_tools=$2
    shift 2
    continue
    ;;

  --ftp)
    use_ftp=yes
    shift
    continue
    ;;

  --clean)
    rm -rf INST
    shift
    continue
    ;;

  --without-autotools)
    echo "warning: Ignoring old option '$1' - new default is to use installed versions of tools if new enough.  Use '--download-tools=never' to prevent ever downloading"
    shift
    continue
    ;;

  --)
    shift
    break
    ;;

  -*)
    echo "Unknown option '$1'" 1>&2
    exit 1
    ;;

  *)
    break
    ;;
  esac
done

case $download_tools in
  always|ifneeded) ;;
  never)
    echo "warning: If stuff breaks with '--download-tools=never', you get to keep the pieces"
    ;;
  *)
    echo "Invalid --download-tools value '$download_tools'"
    exit 1
    ;;
esac

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

[ -d BUILD ] || mkdir BUILD
cd BUILD

# The last field is the SHA1 checksum of the tarball.
if lazy_build autoconf autoconf 2.69 \
    tar.xz e891c3193029775e83e0534ac0ee0c4c711f6d23 \
    tar.gz 562471cbcb0dd0fa42a76665acf0dbb68479b78a \
    ; then
  AUTOCONF=$instdir/bin/autoconf
  export AUTOCONF
  AUTORECONF=$instdir/bin/autoreconf
  export AUTORECONF
  AUTOHEADER=$instdir/bin/autoheader
  export AUTOHEADER
  AUTOM4TE=$instdir/bin/autom4te
  export AUTOM4TE
fi
if lazy_build automake automake 1.15 \
    tar.xz c279b35ca6c410809dac8ade143b805fb48b7655 \
    tar.gz b5a840c7ec4321e78fdc9472e476263fa6614ca1 \
    ; then
  ACLOCAL=$instdir/bin/aclocal
  export ACLOCAL
  AUTOMAKE=$instdir/bin/automake
  export AUTOMAKE
fi
if lazy_build libtool libtool 2.4.6 \
    tar.xz 3e7504b832eb2dd23170c91b6af72e15b56eb94e \
    tar.gz 25b6931265230a06f0fc2146df64c04e5ae6ec33 \
    ; then
  LIBTOOLIZE=$instdir/bin/libtoolize
  export LIBTOOLIZE
fi
if [ "$1" = "--deps=libmagic" ] ; then
    shift
    lazy_build file '' 5.25 \
      tar.gz fea78106dd0b7a09a61714cdbe545135563e84bd
fi

cd ..

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"
export ACLOCAL

intree_swig=no
modules=
for module in ${@:-xapian-core xapian-applications/omega swig xapian-bindings} ; do
  d=$module
  if [ "$d" = swig ] ; then
    if [ -f "xapian-bindings/.nobootstrap" ] ; then
      # No point bootstrapping SWIG if we aren't going to use it.
      echo "Skipping '$d' due to presence of 'xapian-bindings/.nobootstrap'."
      continue
    fi
    handle_git_external swig "$swig_git_commit_hash" "$swig_origin_url"
  fi
  if [ -f "$d/configure.ac" -o -f "$d/configure.in" ] ; then
    :
  else
    # Skip any directories we can't bootstrap.
    continue
  fi
  if [ -f "$d/.nobootstrap" ] ; then
    # Report why to save head scratching when someone forgets they created
    # a .nobootstrap file.
    echo "Skipping '$module' due to presence of '$d/.nobootstrap'."
    continue
  fi
  case $d in
  xapian-applications/omega|xapian-letor)
    # If someone's created a directory for common, leave it be.
    if [ -h "$d/common" ] || [ ! -d "$d/common" ] ; then
      # Pick omega_common_commit_hash or letor_common_commit_hash:
      var=`echo "$d"|sed 's!.*[-/]!!g'`_common_commit_hash
      hash=`eval echo \\\$"$var"`
      handle_git_external "$d/.common.git" "$hash" "$xapian_common_clone_url"
      ln -sf .common.git/xapian-core/common "$d/common"
    fi
    ;;
  esac

  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 $autoreconf_rc
  fi
  for f in config.guess config.sub ; do
    if [ -f "$d/$f" ] ; then
      update_config "config/$f" "$d/$f"
    fi
  done
  modules="$modules $module"
done

# Produce an absolute path to srcdir.
srcdir_abs=`pwd`

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

srcdir="$srcdir_abs"
modules="$modules"

TOP_OF_CONFIGURE

cat <<'MIDDLE_OF_CONFIGURE' >> configure.tmp
# 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`
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 $here in configure.
  vars=' SWIG=$here/swig/preinst-swig'
elif [ -n "$SWIG" ] ; then
  # User specified SWIG in environment, e.g. with:
  #   SWIG=/opt/swig/bin/swig ./bootstrap
  vars=" SWIG='"`echo "$val"|sed 's/\(['"\\'"']\)/\\\1/g'`"'"
fi
for tool in $autotools ; do
  eval "val=\$$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=
revdirs=
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 $d in
    swig)
      case "$*" in
      *--host=*|*--host" "*)
	# We're cross-building, but SWIG needs to be built natively.
	swig_configure_args=
	skip=
	for arg in "$@" ; do
	  if [ -n "$skip" ] ; then
	    skip=
	    continue
	  fi
	  case $arg in
	  --host=*)
	    # Drop --host=xxx
	    continue ;;
	  --host)
	    # Drop --host xxx
	    skip=1
	    continue ;;
	  CC=*|CXX=*)
	    # Drop CC=xxx or CXX=xxx
	    continue ;;
	  CC_FOR_BUILD=*|CXX_FOR_BUILD=*)
	    # CC_FOR_BUILD=xxx -> CC=xxx; CXX_FOR_BUILD=xxx -> CXX=xxx
	    arg=`echo "$arg"|sed 's/_FOR_BUILD//'`
	    ;;
	  SWIG=*)
	    # Drop SWIG=xxx - not useful and could cause problems.
	    continue ;;
	  esac
	  swig_configure_args="$swig_configure_args "\'`echo "x$arg"|sed "s/^x//;s/'/'\\\\\\\\''/g"`\'
	done
	# Also handle compilers specified in environment variables.  We can
	# just reassign them unconditionally as CC and CXX are ignored if
	# empty.
	cd "$d" && CC=$CC_FOR_BUILD CXX=$CXX_FOR_BUILD "$configure" `eval echo $swig_configure_args`
	;;
      *)
	cd "$d" && "$configure" ${1+"$@"}
	;;
      esac
      ;;
    xapian-core)
      cd "$d" && "$configure" --enable-maintainer-mode --disable-option-checking --cache-file="$here/config.cache" ${1+"$@"}
      ;;
    xapian-applications/omega)
      cd "$d" && "$configure" --enable-maintainer-mode --disable-option-checking XAPIAN_CONFIG="$XAPIAN_CONFIG" CPPFLAGS="-I$srcdir/INST/include" LDFLAGS="-L$srcdir/INST/lib" ${1+"$@"}
      ;;
    *)
      cd "$d" && "$configure" --enable-maintainer-mode --disable-option-checking --cache-file="$here/config.cache" XAPIAN_CONFIG="$XAPIAN_CONFIG" ${1+"$@"}
      ;;
    esac
    cd "$here"
    dirs="$dirs $d"
    revdirs="$d $revdirs"
  fi
done

case " $* " in
  *" --help "*|*" --version "*)
    # Don't generate Makefile if --help or --version specified.
    trap - EXIT
    exit 0
    ;;
esac

rm -f Makefile.tmp
cat <<EOF > Makefile.tmp
# Makefile generated by:
CONFIGURE_COMMAND := $cmd
EOF
if [ "$srcdir" != . ] ; then
    cat <<EOF >> Makefile.tmp

VPATH = $srcdir
EOF
fi
targets='all install uninstall install-strip clean distclean mostlyclean maintainer-clean dist check distcheck'
for target in $targets ; do
  echo
  echo "$target:"
  case $target in
    uninstall|*clean)
      # When uninstalling or cleaning, process directories in reverse order, so
      # that we process a directory after any directories which might use it.
      list=$revdirs ;;
    *)
      list=$dirs ;;
  esac
  for d in $list ; 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:
	\$(CONFIGURE_COMMAND)

Makefile: $srcdir/configure
	\$(CONFIGURE_COMMAND)

$srcdir/configure: \\
END_OF_CONFIGURE

: > configure.tmp2

# We want to rerun bootstrap if a series file changes (patch added or removed)
# or an existing patch changes.  Since we always have an series file (even if
# it is empty), this also handles us adding the first patch for something.
patches=
for d in patches/* ; do
  series=$d/series
  echo "$series:" >> configure.tmp2
  cat << END
    $series\\\\
END
  sed -n 's/[	 ]*\(#.*\)\?$//;/./p' "$series" |\
      while read p ; do
    patch=$d/$p
    cat << END
    $patch\\\\
END
    # Because there's a pipeline, this is a subshell, so use a temporary file
    # rather than a variable to compile a list of patches to use below.
    echo "$patch:" >> configure.tmp2
  done
done >> configure.tmp

cat <<'END_OF_CONFIGURE' >> configure.tmp
    $srcdir/bootstrap
	$srcdir/bootstrap

.PHONY: $targets recheck

# Dummy dependencies to allow removing patches we no longer need.
END_OF_CONFIGURE

cat configure.tmp2 >> configure.tmp

cat <<'END_OF_CONFIGURE' >> configure.tmp
EOF
mv -f Makefile.tmp Makefile
trap - EXIT
echo "Configured successfully - now run \"${MAKE-make}\""
END_OF_CONFIGURE

rm -f configure.tmp2

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

# git defaults to showing 7 character abbreviated hashes if that's enough to be
# unique for a particular commit.  But you can't paste these into trac as it
# needs at least 8 hex digits to recognise a hex string as a commit hash.  You
# need 9 characters to be unique across all of Xapian at the time of writing,
# and 12 for the Linux kernel currently (a much larger number of objects than
# Xapian).  12 is a manageable length and decently future-proof, so let's use
# that.
core_abbrev_recommended=12
core_abbrev=`git config --get core.abbrev||:`
if [ -z "$core_abbrev" ] ; then
  echo "*** Setting core.abbrev=$core_abbrev_recommended in repo config"
  git config --local core.abbrev "$core_abbrev_recommended"
elif [ "$core_abbrev" -lt "$core_abbrev_recommended" ] ; then
  if [ -z "`git config --local core.abbrev`" ] ; then
    # Set globally to < $core_abbrev_recommended, override in this repo.
    echo "*** Setting core.abbrev=$core_abbrev_recommended in repo config to override global core.abbrev=$core_abbrev"
    git config --local core.abbrev "$core_abbrev_recommended"
  else
    # Just warn.
    echo "warning: core.abbrev=$core_abbrev set on this repo, at least $core_abbrev_recommended is recommended"
  fi
fi

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