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Diffstat (limited to '')
| -rw-r--r-- | autoheader.in | 368 |
1 files changed, 368 insertions, 0 deletions
diff --git a/autoheader.in b/autoheader.in new file mode 100644 index 0000000..028fe20 --- /dev/null +++ b/autoheader.in @@ -0,0 +1,368 @@ +#! @SHELL@ +# -*- shell-script -*- +# autoheader -- create `config.h.in' from `configure.ac' +#------------------------------------------------------------------------------ +# Copyright 2010-2021,2022 Thomas E. Dickey +# Copyright 1992, 1993, 1994, 1996, 1998, 1999, 2000, 2001 +# 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. + +me=`echo "$0" | sed -e 's,.*[/\\],,'` + +usage="\ +Usage: $0 [OPTION] ... [TEMPLATE-FILE] + +Create a template file of C \`#define' statements for \`configure' to +use. To this end, scan TEMPLATE-FILE, or \`configure.ac' if present, +or else \`configure.in'. + + -h, --help print this help, then exit + -V, --version print version number, then exit + -v, --verbose verbosely report processing + -d, --debug don't remove temporary files + -W, --warnings=CATEGORY report the warnings falling in CATEGORY + +Warning categories include: + \`obsolete' obsolete constructs + \`all' all the warnings + \`no-CATEGORY' turn off the warnings on CATEGORY + \`none' turn off all the warnings + \`error' warnings are error + +Library directories: + -A, --autoconf-dir=ACDIR Autoconf's macro files location (rarely needed) + -l, --localdir=DIR location of \`aclocal.m4' and \`acconfig.h' + +Report bugs to <@PACKAGE_BUGREPORT@>." + +version="\ +autoheader (@PACKAGE_NAME@) @VERSION@ +Written by Roland McGrath. + +Copyright 2010-2012,2021 Thomas E. Dickey +Copyright 1992, 1993, 1994, 1996, 1998, 1999, 2000, 2001 +Free Software Foundation, Inc. +This is free software; see the source for copying conditions. There is NO +warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE." + +help="\ +Try \`$me --help' for more information." + +exit_missing_arg="\ +echo \"$me: option \\\`\$1' requires an argument\" >&2 +echo \"\$help\" >&2 +exit 1" + +# NLS nuisances. +# Only set these to C if already set. These must not be set unconditionally +# because not all systems understand e.g. LANG=C (notably SCO). +# Fixing LC_MESSAGES prevents Solaris sh from translating var values in `set'! +# Non-C LC_CTYPE values break the ctype check. +if test "${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 + +# Variables. +: ${autoconf_dir=${AC_MACRODIR=@datadir@}} +dir=`echo "$0" | sed -e 's,[^/]*$,,'` +# We test "$dir/autoconf" in case we are in the build tree, in which case +# the names are not transformed yet. +for autoconf in "$AUTOCONF" \ + "$dir/@autoconf-name@" \ + "$dir/autoconf" \ + "@bindir@/@autoconf-name@"; do + test -f "$autoconf" && break +done +debug=false +localdir=. +status=0 +tmp= +verbose=: +warning_all=false +warning_error=false +warning_obsolete=false + +# Parse command line. +while test $# -gt 0 ; do + optarg=`expr "x$1" : 'x--[^=]*=\(.*\)' \| \ + "x$1" : 'x-.\(.*\)'` + case $1 in + --version | -V ) + echo "$version" ; exit 0 ;; + --help | -h ) + echo "$usage"; exit 0 ;; + + --debug | -d ) + debug=:; shift ;; + --verbose | -v ) + verbose=echo + shift;; + + --localdir=* | -l?* ) + localdir=$optarg + shift ;; + --localdir | -l ) + test $# = 1 && eval "$exit_missing_arg" + shift + localdir=$1 + shift ;; + + --autoconf-dir=* | -A?* ) + autoconf_dir=$optarg + shift ;; + --autoconf-dir | -A ) + test $# = 1 && eval "$exit_missing_arg" + shift + autoconf_dir=$1 + shift ;; + --macrodir=* | -m?* ) + echo "$me: warning: --macrodir is obsolete, use --autoconf-dir" >&2 + autoconf_dir=$optarg + shift ;; + --macrodir | -m ) + echo "$me: warning: --macrodir is obsolete, use --autoconf-dir" >&2 + test $# = 1 && eval "$exit_missing_arg" + shift + autoconf_dir=$1 + shift ;; + + --warnings=* | -W?* ) + warnings=$warnings,$optarg + shift ;; + --warnings | -W ) + test $# = 1 && eval "$exit_missing_arg" + shift + warnings=$warnings,$1 + shift ;; + + -- ) # Stop option processing + shift; break ;; + - ) # Use stdin as input. + break ;; + -* ) + exec >&2 + echo "$me: invalid option $1" + echo "$help" + exit 1 ;; + * ) + break ;; + esac +done + +# The warnings are the concatenation of 1. application's defaults +# (here, none), 2. $WARNINGS, $3 command line options, in that order. +alphabet='abcdefghijklmnopqrstuvwxyz' +ALPHABET='ABCDEFGHIJKLMNOPQRSTUVWXYZ' +_ac_warnings= +for warning in `IFS=,; echo $WARNINGS,$warnings | tr $ALPHABET $alphabet` +do + case $warning in + '' | ,) continue;; + no-*) eval warning_`expr x$warning : 'xno-\(.*\)'`=false;; + *) eval warning_$warning=:;; + esac +done + +# Trap on 0 to stop playing with `rm'. +$debug || +{ + trap 'status=$?; rm -rf $tmp && exit $status' 0 + trap '(exit 1); exit 1' 1 2 13 15 +} + +# Create a (secure) tmp directory for tmp files. +: ${TMPDIR=/tmp} +{ + tmp=`(umask 077 && mktemp -d -q "$TMPDIR/ahXXXXXX") 2>/dev/null` && + test -n "$tmp" && test -d "$tmp" +} || +{ + tmp=$TMPDIR/ah$$ + (umask 077 && mkdir $tmp) +} || +{ + echo "$me: cannot create a temporary directory in $TMPDIR" >&2 + (exit 1); exit 1 +} + +# Preach. +if ($warning_all || $warning_obsolete) && + (test -f $config_h.top || + test -f $config_h.bot || + test -f $localdir/acconfig.h); then + sed -e "s/^ /$me: WARNING: /" >&2 <<\EOF + Using auxiliary files such as `acconfig.h', `config.h.bot' + and `config.h.top', to define templates for `config.h.in' + is deprecated and discouraged. + + Using the third argument of `AC_DEFINE' and + `AC_DEFINE_UNQUOTED' allows to define a template without + `acconfig.h': + + AC_DEFINE([NEED_MAIN], 1, + [Define if a function `main' is needed.]) + + More sophisticated templates can also be produced, see the + documentation. +EOF + $warning_error && { (exit 1); exit 1; } +fi + +acconfigs= +test -r $localdir/acconfig.h && acconfigs="$acconfigs $localdir/acconfig.h" + +# Find the input file. +case $# in + 0) + case `ls configure.ac configure.in 2>/dev/null` in + *ac*in ) + echo "$me: warning: both \`configure.ac' and \`configure.in' are present." >&2 + echo "$me: warning: proceeding with \`configure.ac'." >&2 + infile=configure.ac;; + *ac ) infile=configure.ac;; + *in ) infile=configure.in;; + * ) + echo "$me: no input file" >&2 + (exit 1); exit 1;; + esac;; + 1) infile=$1 ;; + *) exec >&2 + echo "$me: invalid number of arguments." + echo "$help" + (exit 1); exit 1;; +esac + +# Set up autoconf. +autoconf="$autoconf -l $localdir" +export autoconf_dir + +# ----------------------- # +# Real work starts here. # +# ----------------------- # + +# Source what the traces are trying to tell us. +$verbose $me: running $autoconf to trace from $infile >&2 +$autoconf \ + --trace AC_CONFIG_HEADERS:': $${config_h="$1"}' \ + --trace AH_OUTPUT:'ac_verbatim_$1="\ +$2"' \ + --trace AC_DEFINE_TRACE_LITERAL:'syms="$$syms $1"' \ + $infile | \ + sed \ + -e 's/\(syms="$syms [a-zA-Z_][a-zA-Z0-9_]*\)([^)]*)"/\1"/g' \ + -e 's/\(#undef [a-zA-Z_][a-zA-Z0-9_]*\)([^)]*)/\1/g' \ + -e 's/^\(ac_verbatim_[^(=]*\)([^)]*)/\1/g' \ + >$tmp/traces.sh || { (exit 1); exit 1; } + +$verbose $me: sourcing $tmp/traces.sh >&2 +if (set -e && . $tmp/traces.sh) >/dev/null 2>&1; then + . $tmp/traces.sh +else + echo "$me: error: shell error while sourcing $tmp/traces.sh" >&2 + (exit 1); exit 1 +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. +# Beware that some of the symbols might actually be macro with arguments: +# keep only their name. +syms=`for sym in $syms; do echo $sym; done | + sed -e 's/(.*//' | + sort | + uniq | + sed -e 's@^@ @'` + + +# We template only the first CONFIG_HEADER. +config_h=`set X $config_h; echo $2` +# Support "outfile[:infile]", defaulting infile="outfile.in". +case "$config_h" in +"") echo "$me: error: AC_CONFIG_HEADERS not found in $infile" >&2 + (exit 1); exit 1 ;; +*:*) config_h_in=`echo "$config_h" | sed 's/.*://'` + config_h=`echo "$config_h" | sed 's/:.*//'` ;; +*) config_h_in="$config_h.in" ;; +esac + +# Don't write "do not edit" -- it will get copied into the +# config.h, which it's ok to edit. +cat <<EOF >$tmp/config.hin +/* $config_h_in. Generated automatically from $infile by autoheader. */ +EOF + +# Dump the top. +test -r $config_h.top && cat $config_h.top >>$tmp/config.hin + +# Dump `acconfig.h' but its bottom. +test -r $localdir/acconfig.h && + sed '/@BOTTOM@/,$d;s/@TOP@//' $localdir/acconfig.h >>$tmp/config.hin + +# Dump the templates from `configure.ac'. +for verb in `(set) 2>&1 | sed -n -e '/^ac_verbatim/s/^\([^=]*\)=.*$/\1/p' | sort`; do + eval value=\$$verb + cat >>$tmp/config.hin <<EOF + +$value +EOF +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;}' $localdir/acconfig.h >>$tmp/config.hin +test -f $config_h.bot && cat $config_h.bot >>$tmp/config.hin + + +# Check that all the symbols have a template. +$verbose $me: checking completeness of the template >&2 +# Regexp for a white space. +w='[ ]' +if test -n "$syms"; then + for sym in $syms; do + if @EGREP@ "^#$w*[a-z]*$w$w*$sym($w*|$w.*)$" $tmp/config.hin >/dev/null; then + : # All is well. + else + echo "$me: No template for symbol \`$sym'" >&2 + status=1 + fi + done +fi + + +# If the run was successful, output the result. +if test $status = 0; then + if test $# = 0; then + # Output is a file + if test -f $config_h_in && cmp -s $tmp/config.hin $config_h_in; then + # File didn't change, so don't update its mod time. + echo "$me: $config_h_in is unchanged" >&2 + else + mv -f $tmp/config.hin $config_h_in + fi + else + # Output is stdout + cat $tmp/config.hin + fi +fi + +(exit $status); exit $status |