Use "trap - 0" rather than the unportable "trap 0".

[bison.git] / bootstrap

#! /bin/sh

# Bootstrap this package from CVS.

# Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc.

# 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, 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., 59 Temple Place - Suite 330, Boston, MA
# 02111-1307, USA.

# Written by Paul Eggert.

package=bison

# Ensure file names are sorted consistently across platforms;
# e.g., m4/ulonglong_gl.m4 should follow m4/ulonglong.m4.
LC_ALL=C
export LC_ALL

# Parse options.

for option
do
  case $option in
  --help)
    echo "$0: usage: $0 [--gnulib-srcdir=DIR] [--cvs-user=USERNAME] [--skip-po]"
    exit;;
  --gnulib-srcdir=*)
    GNULIB_SRCDIR=`expr "$option" : '--gnulib-srcdir=\(.*\)'`;;
  --cvs-user=*)
    CVS_USER=`expr "$option" : '--cvs-user=\(.*\)'`;;
  --skip-po)
    SKIP_PO=t;;
  *)
    echo >&2 "$0: $option: unknown option"
    exit 1;;
  esac
done

echo "$0: Bootstrapping CVS $package..."

build_cvs_prefix() {
  CVS_PREFIX=:${1}:
  if [ "${2}" != - ]; then
    CVS_PREFIX=${CVS_PREFIX}${2}@
  fi
}

# Get gnulib files.

case ${GNULIB_SRCDIR--} in
-)
  if [ ! -d gnulib ]; then
    echo "$0: getting gnulib files..."

    trap exit 1 2 13 15
    trap 'rm -fr gnulib; exit 1' 0

    case ${CVS_AUTH-anoncvs} in
    anoncvs)
      CVS_PREFIX='anoncvs@';;
    ssh)
      CVS_PREFIX="$CVS_USER${CVS_USER+@}";;
    *)
      echo "$0: $CVS_AUTH: Unknown CVS access method" >&2
      exit 1;;
    esac

    case $CVS_RSH in
    '') export CVS_RSH=ssh;;
    esac

    cvs -z3 -q -d ${CVS_PREFIX}subversions.gnu.org:/cvsroot/gnulib co gnulib || exit

    trap - 0
  fi
  GNULIB_SRCDIR=gnulib
esac

<$GNULIB_SRCDIR/gnulib-tool || exit

gnulib_modules='
alloca
argmatch
dirname
error
extensions
getopt
hard-locale
hash
malloc
mbswidth
obstack
quote
quotearg
stdbool
stpcpy
xalloc
xalloc-die
xstrndup
'

previous_gnulib_modules=
while [ "$gnulib_modules" != "$previous_gnulib_modules" ]; do
  previous_gnulib_modules=$gnulib_modules
  gnulib_modules=`
    (echo "$gnulib_modules"
     for gnulib_module in $gnulib_modules; do
       $GNULIB_SRCDIR/gnulib-tool --extract-dependencies $gnulib_module
     done) | sort -u
  `
done

gnulib_files=`
  (for gnulib_module in $gnulib_modules; do
     $GNULIB_SRCDIR/gnulib-tool --extract-filelist $gnulib_module
   done) | sort -u
`

gnulib_dirs=`echo "$gnulib_files" | sed 's,/[^/]*$,,' | sort -u`
mkdir -p $gnulib_dirs || exit

for gnulib_file in $gnulib_files; do
  dest=$gnulib_file

  case $gnulib_file in
  m4/onceonly_2_57.m4) dest=m4/onceonly.m4;;
  # These will be overwritten by autopoint, which still uses
  # old jm_.* macro names, so we have to keep both copies.
  # m4/gettext.m4 isn't mentioned here, since it's patched below.
  m4/glibc21.m4 | m4/inttypes_h.m4 | m4/lib-ld.m4 | \
  m4/lib-prefix.m4 | m4/po.m4 | m4/stdint_h.m4 | m4/uintmax_t.m4 | \
  m4/ulonglong.m4)
    dest=`expr $gnulib_file : '\(.*\).m4'`_gl.m4;;
  esac

  rm -f $dest &&
  echo "$0: Copying file $GNULIB_SRCDIR/$gnulib_file" &&
  cp -p $GNULIB_SRCDIR/$gnulib_file $dest || exit
done

echo "$0: patching m4/gettext.m4 so that AM_INTL_SUBDIR is empty ..."
sed '
  /^AC_DEFUN(\[AM_INTL_SUBDIR],/,/^]/c\
    AC_DEFUN([AM_INTL_SUBDIR], [])
' m4/gettext.m4 >m4/gettext_gl.m4 || exit


# Get translations.

case $SKIP_PO in
'')
  echo "$0: getting translations into po (please ignore the robots.txt ERROR 404)..."
  (cd po &&
   rm -f dummy `ls | sed -n '/\.gmo$/p; /\.po/p'` &&
   wget -nv -nd -r -l 1 -A .po -C off \
     http://www2.iro.umontreal.ca/~gnutra/po/maint/$package/ &&
   ls *.po | sed 's/\.po$//' >LINGUAS
  ) || exit;;
esac


# Generate autoconf and automake snippets.

(echo '# This file is generated automatically by "bootstrap".' &&
 echo 'AC_DEFUN([GNULIB_AUTOCONF_SNIPPET],[' &&
 $GNULIB_SRCDIR/gnulib-tool --extract-autoconf-snippet $gnulib_modules &&
 echo '])'
) >m4/gnulib.m4 || exit

(echo '# This file is generated automatically by "bootstrap".' &&
 $GNULIB_SRCDIR/gnulib-tool --extract-automake-snippet $gnulib_modules
) >lib/gnulib.mk || exit


# Reconfigure, getting other files.

echo "$0: autoreconf --verbose --install --force ..."
autoreconf --verbose --install --force || exit


# We don't need intl, so remove it.
# Remove aclocal.m4 too, so that it gets rebuilt.
intl_files_to_remove='
  aclocal.m4
  intl
  m4/codeset.m4
  m4/gettext.m4
  m4/glibc21.m4
  m4/intdiv0.m4
  m4/intmax.m4
  m4/inttypes_h.m4
  m4/inttypes.m4
  m4/inttypes-pri.m4
  m4/isc-posix.m4
  m4/lcmessage.m4
  m4/lib-ld.m4
  m4/lib-prefix.m4
  m4/longdouble.m4
  m4/longlong.m4
  m4/po.m4
  m4/printf-posix.m4
  m4/signed.m4
  m4/size_max.m4
  m4/stdint_h.m4
  m4/uintmax_t.m4
  m4/ulonglong.m4
  m4/wchar_t.m4
  m4/wint_t.m4
  m4/xsize.m4
'
echo $0: rm -fr $intl_files_to_remove ...
rm -fr $intl_files_to_remove || exit

# Patch what appears to be a bug in gettext 0.14.1;
# remove this once the bug is fixed.
grep @top_builddir@ po/Makefile.in.in >/dev/null || {
  echo "$0: prepending 'top_builddir=@top_builddir@' to po/Makefile.in.in ... "
  old_contents=`cat po/Makefile.in.in` || exit
  cat >po/Makefile.in.in <<EOF
top_builddir=@top_builddir@
$old_contents
EOF
}

# Put bug-reporting address into po/Makevars.
echo "$0: sed '/^MSGID_BUGS_ADDRESS *=/s/=.*/= bug-bison@gnu.org/' po/Makevars.template >po/Makevars ..."
sed '/^MSGID_BUGS_ADDRESS *=/s/=.*/= bug-bison@gnu.org/' po/Makevars.template >po/Makevars


# if src/parse-gram.[ch] are out of date, rebuild them.
parse_gram_y=`find src/parse-gram.y \
		 '(' -newer src/parse-gram.c -o -newer src/parse-gram.h ')' \
		 -print` || exit
case $parse_gram_y in
?*)
  echo "$0: warning: bootstrapping with old src/parse-gram.[ch] files."

  echo "$0: touch -c src/parse-gram.[ch] ... "
  touch -c src/parse-gram.[ch] || exit

  echo "$0: ./configure --disable-nls ..."
  ./configure --disable-nls || exit

  echo "$0: (cd lib && make) ..."
  (cd lib && make) || exit

  echo "$0: (cd src && make) ..."
  (cd src && make) || exit

  echo "$0: rm -f src/parse-gram.c src/parse-gram.h ..."
  rm -f src/parse-gram.c src/parse-gram.h || exit

  echo "$0: (cd src && make parse-gram.c parse-gram.h) ..."
  (cd src && make parse-gram.c parse-gram.h) || exit

  echo "$0: make distclean ..."
  make distclean || exit;;
esac

echo "$0: done.  Now you can run './configure'."