#! @SHELL@ # autoconf -- create `configure' using m4 macros # Copyright 1992, 1993, 1994, 1996, 1999, 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: $0 [OPTION] ... [TEMPLATE-FILE] Generate a configuration script from a TEMPLATE-FILE if given, or \`configure.in' by default. Output is sent to the standard output if TEMPLATE-FILE is given, else into \`configure'. Operation modes: -h, --help print this help, then exit -V, --version print version number, then exit -v, --verbose verbosely report processing -d, --debug don't remove temporary files -o, --output=FILE save output in FILE (stdout is the default) -W, --warnings=CATEGORY report the warnings falling in CATEGORY [syntax] Warning categories include: \`cross' cross compilation issues \`obsolete' obsolete constructs \`syntax' dubious syntactic constructs \`all' all the warnings \`no-CATEGORY' turn off the warnings on CATEGORY \`none' turn off all the warnings \`error' warnings are error The environment variable \`WARNINGS' is honored. Library directories: -A, --autoconf-dir=ACDIR Autoconf's macro files location (rarely needed) -l, --localdir=DIR location of the \`aclocal.m4' file Tracing: -t, --trace=MACRO report the list of calls to MACRO -i, --initialization also trace Autoconf's initialization process In tracing mode, no configuration script is created. Report bugs to ." version="\ autoconf (GNU @PACKAGE@) @VERSION@ Written by David J. MacKenzie. Copyright 1992, 1993, 1994, 1996, 1999, 2000 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE." help="\ Try \`$me --help' for more information." exit_missing_arg="\ echo \"$me: option \\\`\$1' requires an argument\" >&2 echo \"\$help\" >&2 exit 1" # NLS nuisances. if test "${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_CTYPE+set}" = set; then LC_CTYPE=C; export LC_CTYPE; fi if test "${LC_MESSAGES+set}" = set; then LC_MESSAGES=C; export LC_MESSAGES; fi # ac_LF_and_DOT # We use echo to avoid assuming a particular line-breaking character. # The extra dot is to prevent the shell from consuming trailing # line-breaks from the sub-command output. 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Prepare it. case "x$outfile" in 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) # M4 expansion. $run_m4f -D_AC_WARNINGS=$_ac_warnings $infile >$tmp/configure || { (exit 1); exit; } if test "x$outfile" != x-; then chmod +x $outfile fi # Put the real line numbers into configure to make config.log more # helpful. Because quoting can sometimes get really painful in m4, # there are special @tokens@ to substitute. cat >$tmp/finalize.awk <&2" } { sub(/[ ]*$/, "") if (\$0 == "") { if (!duplicate) { oline++ print } duplicate = 1 next } duplicate = 0 oline++ if (\$0 ~ /__oline__/) while (sub(/__oline__/, oline)) continue while (sub (/@<:@/, "[")) continue while (sub (/@:>@/, "]")) continue while (sub (/@S\|@/, "$")) continue while (sub (/@%:@/, "#")) continue # Dubious feature: we tolerate macro names when commented. code_part = \$0 comment_start = index (code_part, "#") if (comment_start) code_part = substr (\$0, 0, comment_start) if (match (code_part, /[^$WORDCHAR](A[$ALPHABET]|m4)_[$WORDCHAR]*/)) { macros [substr (code_part, RSTART + 1, RLENGTH - 1)] = oline some_macros_were_not_expanded = 1 } if (match (code_part, /^(A[$ALPHABET]|m4)_[$WORDCHAR]*/)) { macros [substr (code_part, RSTART, RLENGTH)] = oline some_macros_were_not_expanded = 1 } if (match (code_part, /[$WORDCHAR]*_A[$ALPHABET]_[$WORDCHAR]*/)) { macros [substr (code_part, RSTART, RLENGTH)] = oline some_macros_were_not_expanded = 1 } print } # If there are some macros which are left unexpanded in the output, # try to find the input which is responsible. Otherwise, try to help. END { if (some_macros_were_not_expanded) { line = 0 while (getline < "$infile") { line++ for (macro in macros) if (index (\$0, macro)) { delete macros [macro] undefined("$infile", line, macro) } } close ("$infile") for (macro in macros) undefined("$outfile", macros [macro], macro) exit 1 } } EOF $AWK -f $tmp/finalize.awk <$tmp/configure >&4 || exit 1 ;; # End of the task script. ## -------------- ## ## Trace macros. ## ## -------------- ## trace) # trace.m4 # -------- # Routines to process formatted m4 traces. 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 # trace2m4.sed # ------------ # Transform the traces from m4 into an m4 input file. # Typically, transform: # | m4trace:configure.in:3: -1- AC_SUBST([exec_prefix], [NONE]) # into # | AT_AC_SUBST([configure.in], [3], [1], [AC_SUBST], [exec_prefix], [NONE]) # Pay attention that the file name might include colons, if under DOS # for instance, so we don't use `[^:][^:]*'. # The first s/// catches multiline traces, the second, traces as above. preamble='m4trace:\(..*\):\([0-9][0-9]*\): -\([0-9][0-9]*\)-' cat >$tmp/trace2m4.sed <$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) ~ /[*@%]/) { # $sx, short separator `s'. res = res trans(substr (cp, 3, 1), substr (cp, 2, 1)) cp = substr(cp, 3) } else { error("invalid escape: " substr (cp, 1, 2)) } } else res = res char } # Produce the definition of AT_ = the translation of the request. print "define([AT_" macro "], [[" res "]])" close("cat >&2") } EOF # Extract both the m4 program and the m4 options from TRACES. eval set dummy "$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); exit; } 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. $verbose "$me: running $run_m4_trace $infile | $M4 $tmp/trace.m4" >&2 $run_m4_trace $infile 2>&1 >/dev/null | sed -f $tmp/trace2m4.sed | # 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 ;; ## ------------ ## ## Unknown task ## ## ------------ ## *)echo "$me: internal error: unknown task: $task" >&2 (exit 1); exit esac (exit $status); exit