mirror of
git://git.sv.gnu.org/autoconf
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237 lines
6.7 KiB
Bash
237 lines
6.7 KiB
Bash
#!/bin/sh
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# autoheader -- create `config.h.in' from `configure.in'
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# Copyright (C) 1992, 1993, 1994 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2, or (at your option)
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# any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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# Written by Roland McGrath.
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# If given no args, create `config.h.in' from template file `configure.in'.
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# With one arg, create a header file on standard output from
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# the given template file.
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usage="Usage: autoheader [-h] [--help] [-m dir] [--macrodir=dir]
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[-v] [--version] [template-file]"
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# NLS nuisances.
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# Only set `LANG' and `LC_ALL' to "C" if already set.
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# These must not be set unconditionally because not all systems understand
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# e.g. LANG=C (notably SCO).
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if test "${LC_ALL-unset}" != unset; then LC_ALL=C; export LC_ALL; fi
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if test "${LANG-unset}" != unset; then LANG=C; export LANG; fi
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test -z "${AC_MACRODIR}" && AC_MACRODIR=@datadir@
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test -z "${M4}" && M4=@M4@
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case "${M4}" in
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/*) # Handle the case that m4 has moved since we were configured.
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# It may have been found originally in a build directory.
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test -f "${M4}" || M4=m4 ;;
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esac
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print_version=""
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while test $# -gt 0 ; do
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case "z${1}" in
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z-h | z--help | z--h* )
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echo "${usage}"; exit 0 ;;
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z--macrodir=* | z--m*=* )
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AC_MACRODIR="`echo \"${1}\" | sed -e 's/^[^=]*=//'`"
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shift ;;
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z-m | z--macrodir | z--m* )
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shift
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test $# -eq 0 && { echo "${usage}" 1>&2; exit 1; }
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AC_MACRODIR="${1}"
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shift ;;
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z-v | z--version | z--v* )
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print_version="-DAC_PRINT_VERSION"
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shift ;;
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z-- ) # Stop option processing
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shift; break ;;
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z- ) # Use stdin as input.
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break ;;
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z-* )
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echo "${usage}" 1>&2; exit 1 ;;
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* )
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break ;;
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esac
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done
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TEMPLATES="${AC_MACRODIR}/acconfig.h"
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test -r acconfig.h && TEMPLATES="${TEMPLATES} acconfig.h"
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MACROFILES="${AC_MACRODIR}/acgeneral.m4 ${AC_MACRODIR}/acspecific.m4"
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test -r ${AC_MACRODIR}/aclocal.m4 \
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&& MACROFILES="${MACROFILES} ${AC_MACRODIR}/aclocal.m4"
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test -r aclocal.m4 && MACROFILES="${MACROFILES} aclocal.m4"
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MACROFILES="${print_version} ${MACROFILES}"
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case $# in
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0) if test -n "$print_version"
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then infile=/dev/null
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else infile=configure.in; fi ;;
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1) infile=$1 ;;
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*) echo "$usage" >&2; exit 1 ;;
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esac
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# These are the alternate definitions of the acgeneral.m4 macros we want to
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# redefine. They produce strings in the output marked with "@@@" so we can
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# easily extract the information we want. The `#' at the end of the first
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# line of each definition seems to be necessary to prevent m4 from eating
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# the newline, which makes the @@@ not always be at the beginning of a line.
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frob='define([AC_DEFINE],[#
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@@@syms="$syms $1"@@@
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])dnl
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define([AC_SIZEOF_TYPE],[#
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@@@types="$types,$1"@@@
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])dnl
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define([AC_HAVE_FUNCS],[#
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@@@funcs="$funcs $1"@@@
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])dnl
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define([AC_HAVE_HEADERS],[#
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@@@headers="$headers $1"@@@
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])dnl
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define([AC_CONFIG_HEADER],[#
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@@@config_h=$1@@@
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])dnl
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define([AC_HAVE_LIBRARY], [#
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changequote(/,/)dnl
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define(/libname/, dnl
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patsubst(patsubst($1, /lib\([^\.]*\)\.a/, /\1/), /-l/, //))dnl
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changequote([,])dnl
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@@@libs="$libs libname"@@@
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# If it was found, we do:
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$2
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# If it was not found, we do:
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$3
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])dnl
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'
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config_h=config.h
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syms=
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types=
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funcs=
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headers=
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libs=
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# We extract assignments of SYMS, TYPES, FUNCS, HEADERS, and LIBS from the
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# modified autoconf processing of the input file. The sed hair is
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# necessary to win for multi-line macro invocations.
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eval "`echo \"$frob\" \
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| $M4 $MACROFILES - $infile \
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| sed -n -e '
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: again
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/^@@@.*@@@$/s/^@@@\(.*\)@@@$/\1/p
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/^@@@/{
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s/^@@@//p
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n
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s/^/@@@/
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b again
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}'`"
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test -n "$print_version" && exit 0
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# Make SYMS newline-separated rather than blank-separated, and remove dups.
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syms="`for sym in $syms; do echo $sym; done | sort | uniq`"
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if test $# -eq 0; then
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tmpout=autoh$$
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trap "rm -f $tmpout; exit 1" 1 2 15
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exec > $tmpout
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fi
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# Don't write "do not edit" -- it will get copied into the
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# config.h, which it's ok to edit.
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echo "/* ${config_h}.in. Generated automatically from $infile by autoheader. */"
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test -f ${config_h}.top && cat ${config_h}.top
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# This puts each paragraph on its own line, separated by @s.
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if test -n "$syms"; then
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# Make sure the boundary of template files is also the boundary
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# of the paragraph. Extra newlines don't hurt since they will
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# be removed.
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for t in $TEMPLATES; do cat $t; echo; echo; done |
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# The sed script is suboptimal because it has to take care of
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# some broken seds (e.g. AIX) that remove '\n' from the
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# pattern/hold space if the line is empty. (junio@twinsun.com).
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sed -n -e '
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/^[ ]*$/{
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x
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s/\n/@/g
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p
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s/.*/@/
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x
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}
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H' | sed -e 's/@@*/@/g' |
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# Select each paragraph that refers to a symbol we picked out above.
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fgrep "$syms" |
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tr @ \\012
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fi
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echo "$types" | tr , \\012 | sort | uniq | while read ctype; do
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test -z "$ctype" && continue
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# Solaris 2.3 tr rejects noncontiguous characters in character classes.
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sym="`echo "${ctype}" | tr '[a-z] *' '[A-Z]_P'`"
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echo "
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/* The number of bytes in a ${ctype}. */
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#undef SIZEOF_${sym}"
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done
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for func in `for x in $funcs; do echo $x; done | sort | uniq`; do
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sym="`echo ${func} | sed 's/[^a-zA-Z0-9_]/_/g' | tr '[a-z]' '[A-Z]'`"
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echo "
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/* Define if you have ${func}. */
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#undef HAVE_${sym}"
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done
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for header in `for x in $headers; do echo $x; done | sort | uniq`; do
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sym="`echo ${header} | sed 's/[^a-zA-Z0-9_]/_/g' | tr '[a-z]' '[A-Z]'`"
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echo "
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/* Define if you have the <${header}> header file. */
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#undef HAVE_${sym}"
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done
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for lib in `for x in $libs; do echo $x; done | sort | uniq`; do
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sym="`echo ${lib} | sed 's/[^a-zA-Z0-9_]/_/g' | tr '[a-z]' '[A-Z]'`"
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echo "
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/* Define if you have the ${lib} library (-l${lib}). */
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#undef HAVE_LIB${sym}"
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done
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test -f ${config_h}.bot && cat ${config_h}.bot
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status=0
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for sym in $syms; do
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if fgrep $sym $TEMPLATES >/dev/null; then
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: # All is well.
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else
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echo "$0: Symbol \`${sym}' is not covered by $TEMPLATES" >&2
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status=1
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fi
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done
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if test $# -eq 0; then
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if test $status -eq 0; then
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if cmp -s $tmpout ${config_h}.in; then
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rm -f $tmpout
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else
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mv -f $tmpout ${config_h}.in
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fi
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else
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rm -f $tmpout
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fi
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fi
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exit $status
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