autoconf/autoconf.sh
Akim Demaille bbd3b7f40c Load the additions *before* running AC_INIT.
This is important if you want to redefine AC_INIT or some of its
sub macros (eeerk!), or if you want to use user defined macros
before AC_INIT.
Suggested by Didier Verna.

* acgeneral.m4 (_AC_INIT): Don't include `acsite.m4' and
`aclocal.m4'.
* autoconf.sh (run_m4, run_m4f): Do it.
2000-05-23 09:52:05 +00:00

610 lines
18 KiB
Bash

#! @SHELL@
# autoconf -- create `configure' using m4 macros
# Copyright (C) 1992, 93, 94, 96, 99, 2000 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.
# If given no args, create `configure' from template file `configure.in'.
# With one arg, create a configure script on standard output from
# the given template file.
me=`echo "$0" | sed -e 's,.*/,,'`
usage="\
Usage: $0 [OPTION] ... [TEMPLATE-FILE]
Generate a configuration script from a TEMPLATE-FILE if given, or
\`configure.in' by default. Output is sent to the standard output if
TEMPLATE-FILE is given, else into \`configure'.
Operation modes:
-h, --help print this help, then exit
-V, --version print version number, then exit
-v, --verbose verbosely report processing
-d, --debug don't remove temporary files
-m, --macrodir=DIR directory storing Autoconf's macro files
-l, --localdir=DIR directory storing the \`aclocal.m4' file
-o, --output=FILE save output in FILE (stdout is the default)
-W, --warnings=CATEGORY report the warnings falling in CATEGORY
Warning categories include:
\`cross' cross compilation issues
\`obsolete' obsolete constructs
\`syntax' dubious syntactic constructs
\`all' all the warnings
\`error' warnings are error
Tracing:
-t, --trace=MACRO report the list of calls to MACRO
-i, --initialization also trace Autoconf's initialization process
In tracing mode, no configuration script is created.
Report bugs to <bug-autoconf@gnu.org>."
version="\
autoconf (GNU @PACKAGE@) @VERSION@
Written by David J. MacKenzie.
Copyright (C) 1992, 93, 94, 96, 99, 2000 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
help="\
Try \`$me --help' for more information."
# 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
# 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 .`
# Find GNU m4.
# Handle the case that m4 has moved since we were configured.
# It may have been found originally in a build directory.
: ${M4=@M4@}
case "$M4" in
/*) test -f "$M4" || M4=m4 ;;
esac
# Some non-GNU m4's don't reject the --help option, so give them /dev/null.
case `$M4 --help </dev/null 2>&1` in
*reload-state*);;
*) echo "$me: Autoconf requires GNU m4 1.4 or later" >&2; exit 1 ;;
esac
# Variables.
: ${AC_MACRODIR=@datadir@}
: ${AC_ACLOCALDIR=`(aclocal --print-ac-dir) 2>/dev/null`}
: ${AWK=@AWK@}
debug=false
# Trace Autoconf's initialization?
initialization=false
localdir=.
outfile=
# Exit status.
status=0
# Tasks:
# - install
# Install links to the needed *.m4 extensions.
# - trace
# Trace the first arguments of some macros
# - script
# Produce the configure script (default)
task=script
tmp=
verbose=:
# Parse command line
while test $# -gt 0 ; do
case "$1" in
--version | --vers* | -V )
echo "$version" ; exit 0 ;;
--help | --h* | -h )
echo "$usage"; exit 0 ;;
--debug | --d* | -d )
debug=:; shift ;;
--verbose | --verb* | -v )
verbose=echo
shift;;
--localdir=* | --l*=* )
localdir=`echo "$1" | sed -e 's/^[^=]*=//'`
shift ;;
--localdir | --l* | -l )
shift
test $# = 0 && { echo "$help" >&2; exit 1; }
localdir=$1
shift ;;
--macrodir=* | --m*=* )
AC_MACRODIR=`echo "$1" | sed -e 's/^[^=]*=//'`
shift ;;
--macrodir | --m* | -m )
shift
test $# = 0 && { echo "$help" >&2; exit 1; }
AC_MACRODIR=$1
shift ;;
--install )
task=install
shift;;
--trace | -t )
task=trace
shift
test $# = 0 && { echo "$help" >&2; exit 1; }
traces="$traces '"`echo "$1" | sed "s/'/'\\\\\\\\''/g"`"'"
shift ;;
--trace=* )
task=trace
traces="$traces '"`echo "$1" |
sed -e "s/^[^=]*=//;s/:.*//;s/'/'\\\\\\\\''/g"`"'"
shift ;;
--initialization | -i )
initialization=:
shift;;
--output | -o )
shift
test $# = 0 && { echo "$help" >&2; exit 1; }
outfile=$1
shift ;;
--output=* )
outfile=`echo "$1" | sed -e 's/^[^=]*=//'`
shift ;;
--warnings | -W )
shift
test $# = 0 && { echo "$help" >&2; exit 1; }
warnings="$warnings "`echo $1 | sed -e 's/,/ /g'`
shift ;;
--warnings=* )
warnings="$warnings "`echo "$1" | sed -e 's/^[^=]*=//;s/,/ /g'`
shift ;;
-W* ) # People are used to -Wall, -Werror etc.
warnings="$warnings "`echo "$1" | sed -e 's/^-W//;s/,/ /g'`
shift ;;
-- ) # Stop option processing
shift; break ;;
- ) # Use stdin as input.
break ;;
-* )
exec >&2
echo "$me: invalid option $1"
echo "$help"
exit 1 ;;
* )
break ;;
esac
done
# Support $WARNINGS.
: ${warnings=`echo $WARNINGS | sed -e 's/,/ /g'`}
# Trap on 0 to stop playing with `rm'.
$debug ||
{
trap 'status=$?; rm -rf $tmp && exit $status' 0
trap 'exit $?' 1 2 13 15
}
# Create a (secure) tmp directory for tmp files.
: ${TMPDIR=/tmp}
{
tmp=`(umask 077 && mktemp -d -q "$TMPDIR/acXXXXXX") 2>/dev/null` &&
test -n "$tmp"
} ||
{
tmp=$TMPDIR/ac$$ && (umask 077 && mkdir $tmp)
} ||
{
echo "$me: cannot create a temporary directory in $TMPDIR" >&2
exit 1;
}
# Running m4.
test -f "$AC_MACRODIR/acsite.m4" && acsite_m4="$AC_MACRODIR/acsite.m4"
test -f "$localdir/aclocal.m4" && aclocal_m4="$localdir/aclocal.m4"
m4_common="$acsite_m4 $aclocal_m4 -I $AC_MACRODIR -I $localdir"
run_m4="$M4 $AC_MACRODIR/autoconf.m4 $m4_common"
run_m4f="$M4 --reload $AC_MACRODIR/autoconf.m4f $m4_common"
# Find the input file.
case $# in
0) infile=configure.in
test $task = script && test "x$outfile" = x && outfile=configure;;
1) infile=$1 ;;
*) exec >&2
echo "$me: invalid number of arguments."
echo "$help"
exit 1 ;;
esac
# We need an actual file.
if test z$infile = z-; then
infile=$tmp/stdin
cat >$infile
elif test ! -r "$infile"; then
echo "$me: $infile: No such file or directory" >&2
exit 1
fi
# Output is produced into FD 4. Prepare it.
case "x$outfile" in
x- | x ) # Output to stdout
exec 4>&1 ;;
* )
exec 4>$outfile;;
esac
# Initializations are performed. Proceed to the main task.
case $task in
## --------------------------------- ##
## Generate the `configure' script. ##
## --------------------------------- ##
script)
# Enable the requested warnings.
warnings_opt=`echo "$warnings" |
sed -e 's/\([^ ][^ ]*\)/-DAC_WARNING_ENABLE(\1) /g'`
$run_m4f $warnings_opt $infile >$tmp/configure || exit 2
# You could add your own prefixes to pattern if you wanted to check for
# them too, e.g. pattern='\(AC_\|ILT_\)', except that UNIX sed doesn't do
# alternation.
pattern="A[CHM]_"
if grep "^[^#]*$pattern" $tmp/configure >/dev/null 2>&1; then
echo "$me: undefined macros:" >&2
sed -n "s/^[^#]*\\($pattern[_A-Za-z0-9]*\\).*/\\1/p" $tmp/configure |
while read macro; do
grep -n "^[^#]*$macro" $infile /dev/null
test $? = 1 && echo "***BUG in Autoconf--please report*** $macro"
done | sort -u >&2
status=1
fi
if test -n "$outfile"; then
chmod +x $outfile
fi
# Put the real line numbers into configure to make config.log more
# helpful. Because quoting can sometimes get really painful in m4,
# there are special @tokens@ to substitute.
$AWK '
{
sub(/[ ]*$/, "")
if ($0 == "")
{
if (!duplicate)
print
duplicate = 1
next
}
duplicate = 0
oline++
if ($0 ~ /__oline__/)
while (sub(/__oline__/, oline))
continue
while (sub(/@<:@/, "["))
continue
while (sub(/@:>@/, "]"))
continue
while (sub(/@S\|@/, "$"))
continue
while (sub(/@%:@/, "#"))
continue
print
}' <$tmp/configure >&4
;; # End of the task script.
## -------------- ##
## Trace macros. ##
## -------------- ##
trace)
# A program to trace m4 macros.
cat >$tmp/trace.m4 <<\EOF
divert(-1)
changequote([, ])
# _MODE(SEPARATOR, ELT1, ELT2...)
# -------------------------------
# List the elements, separating then with SEPARATOR.
# MODE can be:
# `at' -- the elements are enclosed in brackets.
# `star' -- the elements are listed as are.
# `percent' -- the elements are `smashed': spaces are singled out,
# and no new line remains.
define([_at],
[ifelse([$#], [1], [],
[$#], [2], [[[$2]]],
[[[$2]][$1]$0([$1], shift(shift($@)))])])
define([_percent],
[ifelse([$#], [1], [],
[$#], [2], [smash([$2])],
[smash([$2])[$1]$0([$1], shift(shift($@)))])])
define([_star],
[ifelse([$#], [1], [],
[$#], [2], [[$2]],
[[$2][$1]$0([$1], shift(shift($@)))])])
# Smash quotes its result.
define([smash],
[patsubst(patsubst(patsubst([[[$1]]],
[\\
]),
[[
]+],
[ ]),
[^ *\(.*\) *$], [[\1]])])
define([args], [shift(shift(shift(shift(shift($@)))))])
define([at], [_$0([$1], args($@))])
define([percent], [_$0([$1], args($@))])
define([star], [_$0([$1], args($@))])
EOF
# A program to translate user tracing requests into m4 macros.
cat >$tmp/translate.awk <<\EOF
function trans (arg, sep)
{
# File name.
if (arg == "f")
return "$1"
# Line number.
if (arg == "l")
return "$2"
# Depth.
if (arg == "d")
return "$3"
# Name (also available as $0).
if (arg == "n")
return "$4"
# Escaped dollar.
if (arg == "$")
return "$"
# $@, list of quoted effective arguments.
if (arg == "@")
return "]at([" (separator ? separator : ",") "], $@)["
# $*, list of unquoted effective arguments.
if (arg == "*")
return "]star([" (separator ? separator : ",") "], $@)["
# $%, list of smashed unquoted effective arguments.
if (arg == "%")
return "]percent([" (separator ? separator : ":") "], $@)["
}
function error (message)
{
print message | "cat >&2"
exit 1
}
{
# Accumulate the whole input.
request = request $0 "\n"
}
END {
# Chomp.
request = substr (request, 1, length (request) - 1)
# The default request is `$f:$l:$n:$*'.
colon = index (request, ":")
macro = colon ? substr (request, 1, colon - 1) : request
request = colon ? substr (request, colon + 1) : "$f:$l:$n:$%"
res = ""
for (cp = request; cp; cp = substr (cp, 2))
{
char = substr (cp, 1, 1)
if (char == "$")
{
if (match (cp, /^\$[0-9]+/))
{
# $n -> $(n + 4)
res = res "$" (substr (cp, 2, RLENGTH - 1) + 4)
cp = substr (cp, RLENGTH)
}
else if (substr (cp, 2, 1) ~ /[fldn$@%*]/)
{
# $x, no separator given.
res = res trans(substr (cp, 2, 1))
cp = substr (cp, 2)
}
else if (substr (cp, 2, 1) == "{")
{
# ${sep}x, long separator.
end = index (cp, "}")
if (!end)
error("invalid escape: " cp)
separator = substr (cp, 3, end - 3)
if (substr (cp, end + 1, 1) ~ /[*@%]/)
res = res trans(substr (cp, end + 1, 1), separator)
else
error("invalid escape: " cp)
cp = substr (cp, end + 1)
}
else if (substr (cp, 3, 1) ~ /[*@%]/)
{
# $sx, short separator `s'.
res = res trans(substr (cp, 3, 1), substr (cp, 2, 1))
cp = substr(cp, 3)
}
else
{
error("invalid escape: " substr (cp, 1, 2))
}
}
else
res = res char
}
# Produce the definition of AT_<MACRO> = the translation of the request.
print "define([AT_" macro "], [[" res "]])"
close("cat >&2")
}
EOF
# Extract both the m4 program and the m4 options from TRACES.
eval set dummy "$traces"
shift
for trace
do
# The request may be several lines long, hence sed has to quit.
trace_opt="$trace_opt -t "`echo "$trace" | sed -e 's/:.*//;q'`
echo "$trace" | $AWK -f $tmp/translate.awk >>$tmp/trace.m4 || exit 1
done
echo "divert(0)dnl" >>$tmp/trace.m4
# Do we trace the initialization?
# `errprint' must be silent, otherwise there can be warnings mixed
# with traces in m4's stderr.
if $initialization; then
run_m4_trace="$run_m4 $trace_opt -daflq -Derrprint"
else
run_m4_trace="$run_m4f $trace_opt -daflq -Derrprint"
fi
# Run m4 on the input file to get traces.
$verbose "Running $run_m4_trace $infile | $M4 $tmp/trace.m4" >&2
$run_m4_trace $infile 2>&1 >/dev/null |
sed -e 's/^m4trace:\([^:][^:]*\):\([0-9][0-9]*\): -\([0-9][0-9]*\)- \([^(][^(]*\)(\(.*\)$/AT_\4([\1], [\2], [\3], [\4], \5/' \
-e 's/^m4trace:\([^:][^:]*\):\([0-9][0-9]*\): -\([0-9][0-9]*\)- \(.*\)$/AT_\4([\1], [\2], [\3], [\4])/' |
# Now we are ready to run m4 to process the trace file.
$M4 $tmp/trace.m4 - |
# It makes no sense to try to transform __oline__.
sed '
s/@<:@/[/g
s/@:>@/]/g
s/@S|@/$/g
s/@%:@/#/g
' >&4
;;
## -------------------------------------------------------- ##
## Task --install. Install links to the library m4 files. ##
## -------------------------------------------------------- ##
install)
# An m4 program that reports what macros are requested, and where
# they were defined.
cat >$tmp/request.m4 <<\EOF
dnl Keep the definition of the old AC_DEFUN
define([AC_DEFUN_OLD], defn([AC_DEFUN]))
dnl Define the macro so that the first time it is expanded, it reports
dnl on stderr its name, and where it was defined.
define([AC_DEFUN],
[AC_DEFUN_OLD([$1],
[ifdef([AC_DECLARED{$1}],,
[define([AC_DECLARED{$1}])errprint(]]__file__:__line__:[[ [$1]
)])dnl
][$2])])
dnl All the includes must be disabled. If they are not, since people don't
dnl protect the first argument of AC_DEFUN, then, if read a second time
dnl this argument will be expanded, and we'll get pure junk out of m4.
define([AC_INCLUDE])
EOF
# Run m4 with all the library files, discard stdout, save stderr in
# $requested.
run_m4_request="$run_m4f -dipa -t m4_include -t m4_sinclude $tmp/request.m4"
$verbose $run_m4_request $localdir/*.m4 $AC_ACLOCALDIR/*.m4 $infile >&2
$run_m4_request $localdir/*.m4 $AC_ACLOCALDIR/*.m4 $infile 2>&1 >/dev/null |
# Keep only the good lines, there may be other outputs
grep '^[^: ]*:[0-9][0-9]*:[^:]*$' >$tmp/requested
# Extract the files that are not in the local dir, and install the links.
# Save in `installed' the list of installed links.
$verbose "Required macros:" >&2
$verbose "`sed -e 's/^/| /' $tmp/requested`" >&2
cat $tmp/requested |
while read line
do
file=`echo "$line" | sed -e 's/:.*//'`
filename=`echo "$file" | sed -e 's,.*/,,'`
macro=`echo "$line" | sed -e 's/.*:[ ]*//'`
if test -f "$file" && test "x$file" != "x$infile"; then
if test -f $localdir/$filename; then
$verbose "$filename already installed" >&2
else
$verbose "installing $file which provides $macro" >&2
ln -s "$file" "$localdir/$filename" ||
cp "$file" "$localdir/$filename" ||
{
echo "$me: cannot link from $file to $localdir/$filename" >&2
exit 1
}
fi
echo "$localdir/$filename" >>$tmp/installed
fi
done
# Now that we have installed the links, and that we know that the
# user needs the FILES, check that there is an exact correspondence.
# Use yourself to get the list of the included files.
export AC_ACLOCALDIR
export AC_MACRODIR
# Not m4_s?include, because it would catch acsite and aclocal, which
# we don't care about.
$0 -l "$localdir" -t AC_INCLUDE:'$1' $infile |
sort |
uniq >$tmp/included
# All the included files are needed.
for file in `cat $tmp/included`;
do
if fgrep "$file" $tmp/installed >/dev/null 2>&1; then :; else
echo "\`$file' is uselessly included" >&2
fi
done
# All the needed files are included.
for file in `sort $tmp/installed | uniq`;
do
if fgrep "$file" $tmp/included >/dev/null 2>&1; then :; else
echo "\`$file' is not included" >&2
fi
done
;;
## ------------ ##
## Unknown task ##
## ------------ ##
*)echo "$me: internal error: unknown task: $task" >&2
exit 1
esac
exit $status