autoheader.in - autoconf - Git at Google

 #! @SHELL@
 # autoheader -- create `config.h.in' from `configure.in'
 # Copyright (C) 1992, 1993, 1994, 1996, 1998, 1999 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 Roland McGrath.

 # If given no args, create `config.h.in' from template file `configure.in'.
 # With one arg, create a header file on standard output from
 # the given template file.

 usage="\
 Usage: autoheader [OPTION] ... [TEMPLATE-FILE]

 Create a template file of C \`#define' statements for \`configure' to
 use.  To this end, scan TEMPLATE-FILE, or \`configure.in' if none
 given.

   -d, --debug           don't remove temporary files
   -m, --macrodir=DIR    directory storing macro files
   -l, --localdir=DIR    directory storing \`aclocal.m4' and \`acconfig.h'
   -v, --verbose         verbosely report processing
   -h, --help            print this help, then exit
   --version             print version number, then exit

 Report bugs to <bug-autoconf@gnu.org>."

 # NLS nuisances.
 # Only set these to C if already set.  These must not be set unconditionally
 # because not all systems understand e.g. LANG=C (notably SCO).
 # Fixing LC_MESSAGES prevents Solaris sh from translating var values in `set'!
 # Non-C LC_CTYPE values break the ctype check.
 if test "${LANG+set}"   = set; then LANG=C;   export LANG;   fi
 if test "${LC_ALL+set}" = set; then LC_ALL=C; export LC_ALL; fi
 if test "${LC_MESSAGES+set}" = set; then LC_MESSAGES=C; export LC_MESSAGES; fi
 if test "${LC_CTYPE+set}"    = set; then LC_CTYPE=C;    export LC_CTYPE;    fi

 test -z "${AC_MACRODIR}" && AC_MACRODIR=@datadir@
 test -z "${M4}" && M4=@M4@
 case "${M4}" in
 /*) # Handle the case that m4 has moved since we were configured.
     # It may have been found originally in a build directory.
     test -f "${M4}" || M4=m4 ;;
 esac

 # ac_LF_and_DOT
 # We use echo to avoid assuming a particular line-breaking character.
 # The extra dot is to prevent the shell from consuming trailing
 # line-breaks from the sub-command output.  A line-break within
 # single-quotes doesn't work because, if this script is created in a
 # platform that uses two characters for line-breaks (e.g., DOS), tr
 # would break.
 ac_LF_and_DOT="`echo; echo .`"

 localdir=.
 show_version=no
 debug=0
 # Basename for temporary files.
 ah_base=autoh$$

 while test $# -gt 0 ; do
    case "${1}" in
       -h | --help | --h* )
          echo "${usage}"; exit 0 ;;
       -d | --debug | --d* )
          debug=1; shift ;;
       --localdir=* | --l*=* )
          localdir="`echo \"${1}\" | sed -e 's/^[^=]*=//'`"
          shift ;;
       -l | --localdir | --l*)
          shift
          test $# -eq 0 && { echo "${usage}" 1>&2; exit 1; }
          localdir="${1}"
          shift ;;
       --macrodir=* | --m*=* )
          AC_MACRODIR="`echo \"${1}\" | sed -e 's/^[^=]*=//'`"
          shift ;;
       -m | --macrodir | --m* )
          shift
          test $# -eq 0 && { echo "${usage}" 1>&2; exit 1; }
          AC_MACRODIR="${1}"
          shift ;;
       --version | --v* )
          show_version=yes; shift ;;
       -- )     # Stop option processing
         shift; break ;;
       - )	# Use stdin as input.
         break ;;
       -* )
         echo "${usage}" 1>&2; exit 1 ;;
       * )
         break ;;
    esac
 done

 if test $show_version = yes; then
   version=`sed -n 's/define.AC_ACVERSION.[ 	]*\([0-9.]*\).*/\1/p' \
     $AC_MACRODIR/acgeneral.m4`
   echo "Autoconf version $version"
   exit 0
 fi

 acconfigs="${AC_MACRODIR}/acconfig.h"
 test -r $localdir/acconfig.h && acconfigs="${acconfigs} $localdir/acconfig.h"

 case $# in
   0) infile=configure.in ;;
   1) infile=$1 ;;
   *) echo "$usage" >&2; exit 1 ;;
 esac

 config_h=undefined
 syms=
 types=
 funcs=
 headers=
 libs=
 decls=

 if test "$localdir" != .; then
   use_localdir="-I$localdir -DAC_LOCALDIR=$localdir"
 else
   use_localdir=
 fi

 # Use the frozen version of Autoconf if available.
 r= f=
 # Some non-GNU m4's don't reject the --help option, so give them /dev/null.
 case `$M4 --help < /dev/null 2>&1` in
 *reload-state*) test -r $AC_MACRODIR/autoheader.m4f && { r=--reload f=f; } ;;
 *traditional*) ;;
 *) echo Autoconf requires GNU m4 1.1 or later >&2; exit 1 ;;
 esac

 # Extract assignments of `ah_verbatim_SYMBOL' and `syms' from the
 # modified autoconf processing of the input file.  The sed hair is
 # necessary to win for multi-line macro invocations.
 $M4 -I$AC_MACRODIR $use_localdir $r autoheader.m4$f $infile |
  sed -n -e '
 	: again
 	/^@@@.*@@@$/s/^@@@\(.*\)@@@$/\1/p
 	/^@@@/{
 		s/^@@@//p
 		n
 		s/^/@@@/
 		b again
 	}' >$ah_base.decls
 . ./$ah_base.decls
 if test $debug -eq 0; then rm ./$ah_base.decls; fi

 # Make SYMS newline-separated rather than blank-separated, and remove dups.
 # Start each symbol with a blank (to match the blank after "#undef")
 # to reduce the possibility of mistakenly matching another symbol that
 # is a substring of it.
 syms="`for sym in $syms; do echo $sym; done | sort | uniq | sed 's@^@ @'`"

 # Support "outfile[:infile]", defaulting infile="outfile.in".
 case "$config_h" in
 undefined) echo "error: AC_CONFIG_HEADER not found in $infile" >&2; exit 1 ;;
 *:*) config_h_in=`echo "$config_h"|sed 's%.*:%%'`
      config_h=`echo "$config_h"|sed 's%:.*%%'` ;;
 *) config_h_in="${config_h}.in" ;;
 esac

 tmpout=$ah_base.out
 if test $debug -eq 0; then trap "rm -f $ah_base*; exit 1" 1 2 15; fi
 # Don't write "do not edit" -- it will get copied into the
 # config.h, which it's ok to edit.
 cat <<EOF >$tmpout
 /* ${config_h_in}.  Generated automatically from $infile by autoheader.  */
 EOF

 test -r ${config_h}.top && cat ${config_h}.top  >>$tmpout
 test -r $localdir/acconfig.h &&
   grep @TOP@ $localdir/acconfig.h >/dev/null &&
   sed '/@TOP@/,$d' $localdir/acconfig.h >>$tmpout

 # This puts each template paragraph on its own line, separated by @s.
 if test -n "$syms"; then
   # Make sure the boundary of template files is also the boundary
   # of the paragraph.  Extra newlines don't hurt since they will
   # be removed.
   # Undocumented useless feature: stuff outside of @TOP@ and @BOTTOM@
   # is ignored in the systemwide acconfig.h too.
   for t in $acconfigs; do
     sedscript=""
     grep @TOP@ $t >/dev/null && sedscript="1,/@TOP@/d;"
     grep @BOTTOM@ $t >/dev/null && sedscript="$sedscript /@BOTTOM@/,\$d;"
     # This substitution makes "#undef<TAB>FOO" in acconfig.h work.
     sed -n -e "$sedscript s/	/ /g; p" $t
     echo; echo
   done |
   # The sed script is suboptimal because it has to take care of
   # some broken seds (e.g. AIX) that remove '\n' from the
   # pattern/hold space if the line is empty. (junio@twinsun.com).
   sed -n -e '
 	/^[ 	]*$/{
 		x
 		s/\n/@/g
 		p
 		s/.*/@/
 		x
 	}
 	H' | sed -e 's/@@*/@/g' |
   # Select each paragraph that refers to a symbol we picked out above.
   # Some fgrep's have limits on the number of lines that can be in the
   # pattern on the command line, so use a temporary file containing the
   # pattern.
   (fgrep_tmp=$ah_base.fgrep
    trap "rm -f $fgrep_tmp; exit 1" 1 2 15
    cat > $fgrep_tmp <<EOF
 $syms
 EOF
    fgrep -f $fgrep_tmp
    rm -f $fgrep_tmp) |
   tr @. "$ac_LF_and_DOT" >>$tmpout
 fi

 for verb in `(set) 2>&1 | sed -n -e '/^ac_verbatim/s/^\([^=]*\)=.*$/\1/p'`; do
   echo >>$tmpout
   eval echo >>$tmpout '"${'$verb'}"'
 done

 # Handle the case where @BOTTOM@ is the first line of acconfig.h.
 test -r $localdir/acconfig.h &&
   grep @BOTTOM@ $localdir/acconfig.h >/dev/null &&
   sed -n '/@BOTTOM@/,${/@BOTTOM@/!p;}' $localdir/acconfig.h >>$tmpout
 test -f ${config_h}.bot && cat ${config_h}.bot >>$tmpout

 # Check that all the symbols have a template
 status=0

 if test -n "$syms"; then
   for sym in $syms; do
     if grep "^#[a-z]*[ 	][ 	]*$sym[ 	]*$" $tmpout >/dev/null; then
       : # All is well.
     else
       echo "$0: No template for symbol \`${sym}'" >&2
       status=1
     fi
   done
 fi

 # If the run was successful, output the result.
 if test $status -eq 0; then
   if test $# -eq 0; then
     # Output is a file
     if test -f ${config_h_in} && cmp -s $tmpout ${config_h_in}; then
       : # File didn't change, so don't update its mod time.
     else
       mv -f $tmpout ${config_h_in}
     fi
   else
     # Output is stdout
     cat $tmpout
   fi
 fi

 rm -f $tmpout
 exit $status
	#! @SHELL@
	# autoheader -- create `config.h.in' from `configure.in'
	# Copyright (C) 1992, 1993, 1994, 1996, 1998, 1999 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 Roland McGrath.

	# If given no args, create `config.h.in' from template file `configure.in'.
	# With one arg, create a header file on standard output from
	# the given template file.

	usage="\
	Usage: autoheader [OPTION] ... [TEMPLATE-FILE]

	Create a template file of C \`#define' statements for \`configure' to
	use. To this end, scan TEMPLATE-FILE, or \`configure.in' if none
	given.

	-d, --debug don't remove temporary files
	-m, --macrodir=DIR directory storing macro files
	-l, --localdir=DIR directory storing \`aclocal.m4' and \`acconfig.h'
	-v, --verbose verbosely report processing
	-h, --help print this help, then exit
	--version print version number, then exit

	Report bugs to <bug-autoconf@gnu.org>."

	# NLS nuisances.
	# Only set these to C if already set. These must not be set unconditionally
	# because not all systems understand e.g. LANG=C (notably SCO).
	# Fixing LC_MESSAGES prevents Solaris sh from translating var values in `set'!
	# Non-C LC_CTYPE values break the ctype check.
	if test "${LANG+set}" = set; then LANG=C; export LANG; fi
	if test "${LC_ALL+set}" = set; then LC_ALL=C; export LC_ALL; fi
	if test "${LC_MESSAGES+set}" = set; then LC_MESSAGES=C; export LC_MESSAGES; fi
	if test "${LC_CTYPE+set}" = set; then LC_CTYPE=C; export LC_CTYPE; fi

	test -z "${AC_MACRODIR}" && AC_MACRODIR=@datadir@
	test -z "${M4}" && M4=@M4@
	case "${M4}" in
	/*) # Handle the case that m4 has moved since we were configured.
	# It may have been found originally in a build directory.
	test -f "${M4}" \|\| M4=m4 ;;
	esac

	# ac_LF_and_DOT
	# We use echo to avoid assuming a particular line-breaking character.
	# The extra dot is to prevent the shell from consuming trailing
	# line-breaks from the sub-command output. A line-break within
	# single-quotes doesn't work because, if this script is created in a
	# platform that uses two characters for line-breaks (e.g., DOS), tr
	# would break.
	ac_LF_and_DOT="`echo; echo .`"

	localdir=.
	show_version=no
	debug=0
	# Basename for temporary files.
	ah_base=autoh$$

	while test $# -gt 0 ; do
	case "${1}" in
	-h \| --help \| --h* )
	echo "${usage}"; exit 0 ;;
	-d \| --debug \| --d* )
	debug=1; shift ;;
	--localdir=* \| --l= )
	localdir="`echo \"${1}\" \| sed -e 's/^[^=]*=//'`"
	shift ;;
	-l \| --localdir \| --l*)
	shift
	test $# -eq 0 && { echo "${usage}" 1>&2; exit 1; }
	localdir="${1}"
	shift ;;
	--macrodir=* \| --m= )
	AC_MACRODIR="`echo \"${1}\" \| sed -e 's/^[^=]*=//'`"
	shift ;;
	-m \| --macrodir \| --m* )
	shift
	test $# -eq 0 && { echo "${usage}" 1>&2; exit 1; }
	AC_MACRODIR="${1}"
	shift ;;
	--version \| --v* )
	show_version=yes; shift ;;
	-- ) # Stop option processing
	shift; break ;;
	- ) # Use stdin as input.
	break ;;
	-* )
	echo "${usage}" 1>&2; exit 1 ;;
	* )
	break ;;
	esac
	done

	if test $show_version = yes; then
	version=`sed -n 's/define.AC_ACVERSION.[ ]\([0-9.]\).*/\1/p' \
	$AC_MACRODIR/acgeneral.m4`
	echo "Autoconf version $version"
	exit 0
	fi

	acconfigs="${AC_MACRODIR}/acconfig.h"
	test -r $localdir/acconfig.h && acconfigs="${acconfigs} $localdir/acconfig.h"

	case $# in
	0) infile=configure.in ;;
	1) infile=$1 ;;
	*) echo "$usage" >&2; exit 1 ;;
	esac

	config_h=undefined
	syms=
	types=
	funcs=
	headers=
	libs=
	decls=

	if test "$localdir" != .; then
	use_localdir="-I$localdir -DAC_LOCALDIR=$localdir"
	else
	use_localdir=
	fi

	# Use the frozen version of Autoconf if available.
	r= f=
	# Some non-GNU m4's don't reject the --help option, so give them /dev/null.
	case `$M4 --help < /dev/null 2>&1` in
	reload-state) test -r $AC_MACRODIR/autoheader.m4f && { r=--reload f=f; } ;;
	traditional) ;;
	*) echo Autoconf requires GNU m4 1.1 or later >&2; exit 1 ;;
	esac

	# Extract assignments of `ah_verbatim_SYMBOL' and `syms' from the
	# modified autoconf processing of the input file. The sed hair is
	# necessary to win for multi-line macro invocations.
	$M4 -I$AC_MACRODIR $use_localdir $r autoheader.m4$f $infile \|
	sed -n -e '
	: again
	/^@@@.@@@$/s/^@@@\(.\)@@@$/\1/p
	/^@@@/{
	s/^@@@//p
	n
	s/^/@@@/
	b again
	}' >$ah_base.decls
	. ./$ah_base.decls
	if test $debug -eq 0; then rm ./$ah_base.decls; fi

	# Make SYMS newline-separated rather than blank-separated, and remove dups.
	# Start each symbol with a blank (to match the blank after "#undef")
	# to reduce the possibility of mistakenly matching another symbol that
	# is a substring of it.
	syms="`for sym in $syms; do echo $sym; done \| sort \| uniq \| sed 's@^@ @'`"

	# Support "outfile[:infile]", defaulting infile="outfile.in".
	case "$config_h" in
	undefined) echo "error: AC_CONFIG_HEADER not found in $infile" >&2; exit 1 ;;
	:) config_h_in=`echo "$config_h"\|sed 's%.*:%%'`
	config_h=`echo "$config_h"\|sed 's%:.*%%'` ;;
	*) config_h_in="${config_h}.in" ;;
	esac

	tmpout=$ah_base.out
	if test $debug -eq 0; then trap "rm -f $ah_base*; exit 1" 1 2 15; fi
	# Don't write "do not edit" -- it will get copied into the
	# config.h, which it's ok to edit.
	cat <<EOF >$tmpout
	/* ${config_h_in}. Generated automatically from $infile by autoheader. */
	EOF

	test -r ${config_h}.top && cat ${config_h}.top >>$tmpout
	test -r $localdir/acconfig.h &&
	grep @TOP@ $localdir/acconfig.h >/dev/null &&
	sed '/@TOP@/,$d' $localdir/acconfig.h >>$tmpout

	# This puts each template paragraph on its own line, separated by @s.
	if test -n "$syms"; then
	# Make sure the boundary of template files is also the boundary
	# of the paragraph. Extra newlines don't hurt since they will
	# be removed.
	# Undocumented useless feature: stuff outside of @TOP@ and @BOTTOM@
	# is ignored in the systemwide acconfig.h too.
	for t in $acconfigs; do
	sedscript=""
	grep @TOP@ $t >/dev/null && sedscript="1,/@TOP@/d;"
	grep @BOTTOM@ $t >/dev/null && sedscript="$sedscript /@BOTTOM@/,\$d;"
	# This substitution makes "#undef<TAB>FOO" in acconfig.h work.
	sed -n -e "$sedscript s/ / /g; p" $t
	echo; echo
	done \|
	# The sed script is suboptimal because it has to take care of
	# some broken seds (e.g. AIX) that remove '\n' from the
	# pattern/hold space if the line is empty. (junio@twinsun.com).
	sed -n -e '
	/^[ ]*$/{
	x
	s/\n/@/g
	p
	s/.*/@/
	x
	}
	H' \| sed -e 's/@@*/@/g' \|
	# Select each paragraph that refers to a symbol we picked out above.
	# Some fgrep's have limits on the number of lines that can be in the
	# pattern on the command line, so use a temporary file containing the
	# pattern.
	(fgrep_tmp=$ah_base.fgrep
	trap "rm -f $fgrep_tmp; exit 1" 1 2 15
	cat > $fgrep_tmp <<EOF
	$syms
	EOF
	fgrep -f $fgrep_tmp
	rm -f $fgrep_tmp) \|
	tr @. "$ac_LF_and_DOT" >>$tmpout
	fi

	for verb in `(set) 2>&1 \| sed -n -e '/^ac_verbatim/s/^\([^=]\)=.$/\1/p'`; do
	echo >>$tmpout
	eval echo >>$tmpout '"${'$verb'}"'
	done

	# Handle the case where @BOTTOM@ is the first line of acconfig.h.
	test -r $localdir/acconfig.h &&
	grep @BOTTOM@ $localdir/acconfig.h >/dev/null &&
	sed -n '/@BOTTOM@/,${/@BOTTOM@/!p;}' $localdir/acconfig.h >>$tmpout
	test -f ${config_h}.bot && cat ${config_h}.bot >>$tmpout

	# Check that all the symbols have a template
	status=0

	if test -n "$syms"; then
	for sym in $syms; do
	if grep "^#[a-z][ ][ ]$sym[ ]*$" $tmpout >/dev/null; then
	: # All is well.
	else
	echo "$0: No template for symbol \`${sym}'" >&2
	status=1
	fi
	done
	fi

	# If the run was successful, output the result.
	if test $status -eq 0; then
	if test $# -eq 0; then
	# Output is a file
	if test -f ${config_h_in} && cmp -s $tmpout ${config_h_in}; then
	: # File didn't change, so don't update its mod time.
	else
	mv -f $tmpout ${config_h_in}
	fi
	else
	# Output is stdout
	cat $tmpout
	fi
	fi

	rm -f $tmpout
	exit $status