# aclocal - create aclocal.m4 by scanning configure.ac
-# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
-# Free Software Foundation, Inc.
+# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
+# 2005, 2006, 2007, 2008, 2009 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)
+# the Free Software Foundation; either version 3, or (at your option)
# any later version.
# This program is distributed in the hope that it will be useful,
# 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.
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
# Written by Tom Tromey <tromey@redhat.com>, and
# Alexandre Duret-Lutz <adl@gnu.org>.
# Some globals.
+# We do not operate in threaded mode.
+$perl_threads = 0;
+
# Include paths for searching macros. We search macros in this order:
# user-supplied directories first, then the directory containing the
# automake macros, and finally the system-wide directories for
my @automake_includes = ("@datadir@/aclocal-$APIVERSION");
my @system_includes = ('@datadir@/aclocal');
+# Whether we should copy M4 file in $user_includes[0].
+my $install = 0;
+
+# --diff
+my @diff_command;
+
+# --dry-run
+my $dry_run = 0;
+
# configure.ac or configure.in.
my $configure_ac;
# Output file name.
my $output_file = 'aclocal.m4';
-# Modification time of the youngest dependency.
-my $greatest_mtime = 0;
-
# Option --force.
my $force_output = 0;
+# Modification time of the youngest dependency.
+my $greatest_mtime = 0;
+
# Which macros have been seen.
my %macro_seen = ();
-# Which files have been seen.
-my %file_seen = ();
-
# Remember the order into which we scanned the files.
# It's important to output the contents of aclocal.m4 in the opposite order.
# (Definitions in first files we have scanned should override those from
# Ditto, but records the last definition of each macro as returned by --trace.
my %map_traced_defs = ();
+# Map basenames to macro names.
+my %invmap = ();
+
# Map file names to file contents.
my %file_contents = ();
+# Map file names to file types.
+my %file_type = ();
+use constant FT_USER => 1;
+use constant FT_AUTOMAKE => 2;
+use constant FT_SYSTEM => 3;
+
# Map file names to included files (transitively closed).
my %file_includes = ();
+# Files which have already been added.
+my %file_added = ();
+
+# Files that have already been scanned.
+my %scanned_configure_dep = ();
+
+# Serial numbers, for files that have one.
+# The key is the basename of the file,
+# the value is the serial number represented as a list.
+my %serial = ();
+
# Matches a macro definition.
# AC_DEFUN([macroname], ...)
# or
# except `]'. Otherwise macroname stops on the first `]', `,', `)',
# or `\n' encountered.
my $ac_defun_rx =
- "(?:A[CU]_DEFUN|AC_DEFUN_ONCE)\\((?:\\[([^]]+)\\]|([^],)\n]+))";
+ "(?:AU_ALIAS|A[CU]_DEFUN|AC_DEFUN_ONCE)\\((?:\\[([^]]+)\\]|([^],)\n]+))";
# Matches an AC_REQUIRE line.
my $ac_require_rx = "AC_REQUIRE\\((?:\\[([^]]+)\\]|([^],)\n]+))\\)";
-# Matches an m4_include line
-my $m4_include_rx = "(?:m4_)?s?include\\((?:\\[([^]]+)\\]|([^],)\n]+))\\)";
+# Matches an m4_include line.
+my $m4_include_rx = "(m4_|m4_s|s)include\\((?:\\[([^]]+)\\]|([^],)\n]+))\\)";
+
+# Match a serial number.
+my $serial_line_rx = '^#\s*serial\s+(\S*)';
+my $serial_number_rx = '^\d+(?:\.\d+)*$';
+
+# Autoconf version
+# Set by trace_used_macros.
+my $ac_version;
+# If set, names a temporary file that must be erased on abnormal exit.
+my $erase_me;
\f
################################################################
+# Erase temporary file ERASE_ME. Handle signals.
+sub unlink_tmp
+{
+ my ($sig) = @_;
+
+ if ($sig)
+ {
+ verb "caught SIG$sig, bailing out";
+ }
+ if (defined $erase_me && -e $erase_me && !unlink ($erase_me))
+ {
+ fatal "could not remove `$erase_me': $!";
+ }
+ undef $erase_me;
+
+ # reraise default handler.
+ if ($sig)
+ {
+ $SIG{$sig} = 'DEFAULT';
+ kill $sig => $$;
+ }
+}
+
+$SIG{'INT'} = $SIG{'TERM'} = $SIG{'QUIT'} = $SIG{'HUP'} = 'unlink_tmp';
+END { unlink_tmp }
+
# Check macros in acinclude.m4. If one is not used, warn.
sub check_acinclude ()
{
}
}
-################################################################
+sub reset_maps ()
+{
+ $greatest_mtime = 0;
+ %macro_seen = ();
+ @file_order = ();
+ %map = ();
+ %map_traced_defs = ();
+ %file_contents = ();
+ %file_type = ();
+ %file_includes = ();
+ %file_added = ();
+ %scanned_configure_dep = ();
+ %invmap = ();
+ %serial = ();
+ undef &search;
+}
-# Scan all the installed m4 files and construct a map.
-sub scan_m4_files (@)
+# install_file ($SRC, $DEST)
+sub install_file ($$)
{
- my @dirlist = @_;
+ my ($src, $dest) = @_;
+ my $diff_dest;
- # First, scan configure.ac. It may contain macro definitions,
- # or may include other files that define macros.
- &scan_file ($configure_ac, 'aclocal');
+ if ($force_output
+ || !exists $file_contents{$dest}
+ || $file_contents{$src} ne $file_contents{$dest})
+ {
+ if (-e $dest)
+ {
+ msg 'note', "overwriting `$dest' with `$src'";
+ $diff_dest = $dest;
+ }
+ else
+ {
+ msg 'note', "installing `$dest' from `$src'";
+ }
- # Then, scan acinclude.m4 if it exists.
- if (-f 'acinclude.m4')
+ if (@diff_command)
+ {
+ if (! defined $diff_dest)
+ {
+ # $dest does not exist. We create an empty one just to
+ # run diff, and we erase it afterward. Using the real
+ # the destination file (rather than a temporary file) is
+ # good when diff is run with options that display the
+ # file name.
+ #
+ # If creating $dest fails, fall back to /dev/null. At
+ # least one diff implementation (Tru64's) cannot deal
+ # with /dev/null. However working around this is not
+ # worth the trouble since nobody run aclocal on a
+ # read-only tree anyway.
+ $erase_me = $dest;
+ my $f = new IO::File "> $dest";
+ if (! defined $f)
+ {
+ undef $erase_me;
+ $diff_dest = '/dev/null';
+ }
+ else
+ {
+ $diff_dest = $dest;
+ $f->close;
+ }
+ }
+ my @cmd = (@diff_command, $diff_dest, $src);
+ $! = 0;
+ verb "running: @cmd";
+ my $res = system (@cmd);
+ Automake::FileUtils::handle_exec_errors "@cmd", 1
+ if $res;
+ unlink_tmp;
+ }
+ elsif (!$dry_run)
+ {
+ xsystem ('cp', $src, $dest);
+ }
+ }
+}
+
+# Compare two lists of numbers.
+sub list_compare (\@\@)
+{
+ my @l = @{$_[0]};
+ my @r = @{$_[1]};
+ while (1)
{
- &scan_file ('acinclude.m4', 'aclocal');
+ if (0 == @l)
+ {
+ return (0 == @r) ? 0 : -1;
+ }
+ elsif (0 == @r)
+ {
+ return 1;
+ }
+ elsif ($l[0] < $r[0])
+ {
+ return -1;
+ }
+ elsif ($l[0] > $r[0])
+ {
+ return 1;
+ }
+ shift @l;
+ shift @r;
}
+}
+
+################################################################
+
+# scan_m4_dirs($TYPE, @DIRS)
+# --------------------------
+# Scan all M4 files installed in @DIRS for new macro definitions.
+# Register each file as of type $TYPE (one of the FT_* constants).
+sub scan_m4_dirs ($@)
+{
+ my ($type, @dirlist) = @_;
- # Finally, scan all files in our search path.
foreach my $m4dir (@dirlist)
{
if (! opendir (DIR, $m4dir))
next if $file eq 'aclocal.m4';
my $fullfile = File::Spec->canonpath ("$m4dir/$file");
- &scan_file ($fullfile, 'aclocal');
+ &scan_file ($type, $fullfile, 'aclocal');
}
closedir (DIR);
}
+}
+
+# Scan all the installed m4 files and construct a map.
+sub scan_m4_files ()
+{
+ # First, scan configure.ac. It may contain macro definitions,
+ # or may include other files that define macros.
+ &scan_file (FT_USER, $configure_ac, 'aclocal');
+
+ # Then, scan acinclude.m4 if it exists.
+ if (-f 'acinclude.m4')
+ {
+ &scan_file (FT_USER, 'acinclude.m4', 'aclocal');
+ }
+
+ # Finally, scan all files in our search paths.
+ scan_m4_dirs (FT_USER, @user_includes);
+ scan_m4_dirs (FT_AUTOMAKE, @automake_includes);
+ scan_m4_dirs (FT_SYSTEM, @system_includes);
# Construct a new function that does the searching. We use a
# function (instead of just evaluating $search in the loop) so that
# scan_configure_dep ($file)
# --------------------------
# Scan a configure dependency (configure.ac, or separate m4 files)
-# for uses of know macros and AC_REQUIREs of possibly unknown macros.
+# for uses of known macros and AC_REQUIREs of possibly unknown macros.
# Recursively scan m4_included files.
-my %scanned_configure_dep = ();
sub scan_configure_dep ($)
{
my ($file) = @_;
# Remove comments from current line.
s/\bdnl\b.*$//;
s/\#.*$//;
+ # Avoid running all the following regexes on white lines.
+ next if /^\s*$/;
while (/$m4_include_rx/go)
{
- push (@ilist, $1 || $2);
+ my $ifile = $2 || $3;
+ # Skip missing `sinclude'd files.
+ next if $1 ne 'm4_' && ! -f $ifile;
+ push @ilist, $ifile;
}
while (/$ac_require_rx/go)
}
add_macro ($_) foreach (@rlist);
- my $dirname = dirname $file;
- &scan_configure_dep (File::Spec->rel2abs ($_, $dirname)) foreach (@ilist);
+ &scan_configure_dep ($_) foreach @ilist;
}
-# Add a file to output.
+# add_file ($FILE)
+# ----------------
+# Add $FILE to output.
sub add_file ($)
{
my ($file) = @_;
# Only add a file once.
- return if ($file_seen{$file});
- $file_seen{$file} = 1;
+ return if ($file_added{$file});
+ $file_added{$file} = 1;
scan_configure_dep $file;
}
# Point to the documentation for underquoted AC_DEFUN only once.
my $underquoted_manual_once = 0;
-# scan_file ($FILE, $WHERE)
-# -------------------------
+# scan_file ($TYPE, $FILE, $WHERE)
+# --------------------------------
# Scan a single M4 file ($FILE), and all files it includes.
# Return the list of included files.
+# $TYPE is one of FT_USER, FT_AUTOMAKE, or FT_SYSTEM, depending
+# on where the file comes from.
# $WHERE is the location to use in the diagnostic if the file
# does not exist.
-sub scan_file ($$)
+sub scan_file ($$$)
{
- my ($file, $where) = @_;
- my $base = dirname $file;
+ my ($type, $file, $where) = @_;
+ my $basename = basename $file;
# Do not scan the same file twice.
return @{$file_includes{$file}} if exists $file_includes{$file};
unshift @file_order, $file;
+ $file_type{$file} = $type;
+
fatal "$where: file `$file' does not exist" if ! -e $file;
my $fh = new Automake::XFile $file;
my $contents = '';
my @inc_files = ();
my %inc_lines = ();
+
+ my $defun_seen = 0;
+ my $serial_seen = 0;
+ my $serial_older = 0;
+
while ($_ = $fh->getline)
{
# Ignore `##' lines.
$contents .= $_;
my $line = $_;
+ if ($line =~ /$serial_line_rx/go)
+ {
+ my $number = $1;
+ if ($number !~ /$serial_number_rx/go)
+ {
+ msg ('syntax', "$file:$.",
+ "warning: ill-formed serial number `$number', "
+ . "expecting a version string with only digits and dots");
+ }
+ elsif ($defun_seen)
+ {
+ # aclocal removes all definitions from M4 file with the
+ # same basename if a greater serial number is found.
+ # Encountering a serial after some macros will undefine
+ # these macros...
+ msg ('syntax', "$file:$.",
+ 'the serial number must appear before any macro definition');
+ }
+ # We really care about serials only for non-automake macros
+ # and when --install is used. But the above diagnostics are
+ # made regardless of this, because not using --install is
+ # not a reason not the fix macro files.
+ elsif ($install && $type != FT_AUTOMAKE)
+ {
+ $serial_seen = 1;
+ my @new = split (/\./, $number);
+
+ verb "$file:$.: serial $number";
+
+ if (!exists $serial{$basename}
+ || list_compare (@new, @{$serial{$basename}}) > 0)
+ {
+ # Delete any definition we knew from the old macro.
+ foreach my $def (@{$invmap{$basename}})
+ {
+ verb "$file:$.: ignoring previous definition of $def";
+ delete $map{$def};
+ }
+ $invmap{$basename} = [];
+ $serial{$basename} = \@new;
+ }
+ else
+ {
+ $serial_older = 1;
+ }
+ }
+ }
+
+ # Remove comments from current line.
+ # Do not do it earlier, because the serial line is a comment.
+ $line =~ s/\bdnl\b.*$//;
+ $line =~ s/\#.*$//;
+
while ($line =~ /$ac_defun_rx/go)
{
+ $defun_seen = 1;
if (! defined $1)
{
msg ('syntax', "$file:$.", "warning: underquoted definition of $2"
unless $underquoted_manual_once;
$underquoted_manual_once = 1;
}
+
+ # If this macro does not have a serial and we have already
+ # seen a macro with the same basename earlier, we should
+ # ignore the macro (don't exit immediately so we can still
+ # diagnose later #serial numbers and underquoted macros).
+ $serial_older ||= ($type != FT_AUTOMAKE
+ && !$serial_seen && exists $serial{$basename});
+
my $macro = $1 || $2;
- if (! defined $map{$macro})
+ if (!$serial_older && !defined $map{$macro})
{
verb "found macro $macro in $file: $.";
$map{$macro} = $file;
+ push @{$invmap{$basename}}, $macro;
}
else
{
while ($line =~ /$m4_include_rx/go)
{
- my $ifile = $1 || $2;
- # m4_include is relative to the directory of the file which
- # perform the include, but we want paths relative to the
- # directory where aclocal is run. Do not use
- # File::Spec->rel2abs, because we want to store relative
- # paths (they might be used later of aclocal outputs an
- # m4_include for this file, or if the user itself includes
- # this file).
- $ifile = "$base/$ifile"
- unless $base eq '.' || File::Spec->file_name_is_absolute ($ifile);
+ my $ifile = $2 || $3;
+ # Skip missing `sinclude'd files.
+ next if $1 ne 'm4_' && ! -f $ifile;
push (@inc_files, $ifile);
$inc_lines{$ifile} = $.;
}
}
+
+ # Ignore any file that has an old serial (or no serial if we know
+ # another one with a serial).
+ return ()
+ if ($serial_older ||
+ ($type != FT_AUTOMAKE && !$serial_seen && exists $serial{$basename}));
+
$file_contents{$file} = $contents;
# For some reason I don't understand, it does not work
# With Perl 5.8.2 it undefines @inc_files.
my @copy = @inc_files;
my @all_inc_files = (@inc_files,
- map { scan_file ($_, "$file:$inc_lines{$_}") } @copy);
+ map { scan_file ($type, $_,
+ "$file:$inc_lines{$_}") } @copy);
$file_includes{$file} = \@all_inc_files;
return @all_inc_files;
}
sub strip_redundant_includes (%)
{
my %files = @_;
+
+ # Always include acinclude.m4, even if it does not appear to be used.
+ $files{'acinclude.m4'} = 1 if -f 'acinclude.m4';
+ # File included by $configure_ac are redundant.
+ $files{$configure_ac} = 1;
+
# Files at the end of @file_order should override those at the beginning,
# so it is important to preserve these trailing files. We can remove
# a file A if it is going to be output before a file B that includes
verb "$ifile is already included by $file";
}
}
+
+ # configure.ac is implicitly included.
+ delete $files{$configure_ac};
+
return %files;
}
sub trace_used_macros ()
{
my %files = map { $map{$_} => 1 } keys %macro_seen;
- $files{'acinclude.m4'} = 1 if -f 'acinclude.m4';
%files = strip_redundant_includes %files;
- # configure.ac is implicitly included.
- delete $files{$configure_ac};
my $traces = ($ENV{AUTOM4TE} || 'autom4te');
$traces .= " --language Autoconf-without-aclocal-m4 ";
# All candidate files.
- $traces .= join (' ', grep { exists $files{$_} } @file_order) . " ";
+ $traces .= join (' ',
+ (map { "'$_'" }
+ (grep { exists $files{$_} } @file_order))) . " ";
# All candidate macros.
$traces .= join (' ',
- (map { "--trace='$_:\$f::\$n::\$1'" } ('AC_DEFUN',
- 'AC_DEFUN_ONCE',
- 'AU_DEFUN')),
+ (map { "--trace='$_:\$f::\$n::\$1'" }
+ ('AC_DEFUN',
+ 'AC_DEFUN_ONCE',
+ 'AU_DEFUN',
+ '_AM_AUTOCONF_VERSION')),
# Do not trace $1 for all other macros as we do
# not need it and it might contains harmful
# characters (like newlines).
if ($macro eq 'AC_DEFUN'
|| $macro eq 'AC_DEFUN_ONCE'
|| $macro eq 'AU_DEFUN');
+
+ $ac_version = $arg1 if $macro eq '_AM_AUTOCONF_VERSION';
}
$tracefh->close;
################################################################
# Write output.
+# Return 0 iff some files were installed locally.
sub write_aclocal ($@)
{
my ($output_file, @macros) = @_;
if (exists $map_traced_defs{$m}
&& $map{$m} eq $map_traced_defs{$m});
}
- $files{'acinclude.m4'} = 1 if -f 'acinclude.m4';
+ # Do not explicitly include a file that is already indirectly included.
%files = strip_redundant_includes %files;
- delete $files{$configure_ac};
+
+ my $installed = 0;
for my $file (grep { exists $files{$_} } @file_order)
{
- # Check the time stamp of this file, and all files it includes.
+ # Check the time stamp of this file, and of all files it includes.
for my $ifile ($file, @{$file_includes{$file}})
{
my $mtime = mtime $ifile;
# If the file to add looks like outside the project, copy it
# to the output. The regex catches filenames starting with
# things like `/', `\', or `c:\'.
- if ($file =~ m,^(?:\w:)?[\\/],)
+ if ($file_type{$file} != FT_USER
+ || $file =~ m,^(?:\w:)?[\\/],)
{
- $output .= $file_contents{$file} . "\n";
+ if (!$install || $file_type{$file} != FT_SYSTEM)
+ {
+ # Copy the file into aclocal.m4.
+ $output .= $file_contents{$file} . "\n";
+ }
+ else
+ {
+ # Install the file (and any file it includes).
+ my $dest;
+ for my $ifile (@{$file_includes{$file}}, $file)
+ {
+ $dest = "$user_includes[0]/" . basename $ifile;
+ verb "installing $ifile to $dest";
+ install_file ($ifile, $dest);
+ }
+ $installed = 1;
+ }
}
else
{
}
}
+ if ($installed)
+ {
+ verb "running aclocal anew, because some files were installed locally";
+ return 0;
+ }
+
# Nothing to output?!
# FIXME: Shouldn't we diagnose this?
- return if ! length ($output);
+ return 1 if ! length ($output);
+
+ if ($ac_version)
+ {
+ # Do not use "$output_file" here for the same reason we do not
+ # use it in the header below. autom4te will output the name of
+ # the file in the diagnostic anyway.
+ $output = "m4_ifndef([AC_AUTOCONF_VERSION],
+ [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
+m4_if(m4_defn([AC_AUTOCONF_VERSION]), [$ac_version],,
+[m4_warning([this file was generated for autoconf $ac_version.
+You have another version of autoconf. It may work, but is not guaranteed to.
+If you have problems, you may need to regenerate the build system entirely.
+To do so, use the procedure documented by the package, typically `autoreconf'.])])
+
+$output";
+ }
# We used to print `# $output_file generated automatically etc.' But
# this creates spurious differences when using autoreconf. Autoreconf
# name in the header.
$output = "# generated automatically by aclocal $VERSION -*- Autoconf -*-
-# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
-# Free Software Foundation, Inc.
+# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
+# 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
&& $output eq contents ($output_file))
{
verb "$output_file unchanged";
- return;
+ return 1;
}
verb "writing $output_file";
- my $out = new Automake::XFile "> $output_file";
- print $out $output;
- return;
+ if (!$dry_run)
+ {
+ if (-e $output_file && !unlink $output_file)
+ {
+ fatal "could not remove `$output_file': $!";
+ }
+ my $out = new Automake::XFile "> $output_file";
+ print $out $output;
+ }
+ return 1;
}
################################################################
Options:
--acdir=DIR directory holding config files (for debugging)
+ --diff[=COMMAND] run COMMAND [diff -u] on M4 files that would be
+ changed (implies --install and --dry-run)
+ --dry-run pretend to, but do not actually update any file
--force always update output file
--help print this help, then exit
-I DIR add directory to search list for .m4 files
+ --install copy third-party files to the first -I directory
--output=FILE put output in FILE (default aclocal.m4)
--print-ac-dir print name of directory holding m4 files, then exit
--verbose don't be silent
# Print version and exit.
sub version()
{
- print "\
+ print <<EOF;
aclocal (GNU $PACKAGE) $VERSION
+Copyright (C) 2009 Free Software Foundation, Inc.
+License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
+This is free software: you are free to change and redistribute it.
+There is NO WARRANTY, to the extent permitted by law.
+
Written by Tom Tromey <tromey\@redhat.com>
- and Alexandre Duret-Lutz <adl\@gnu.org>
-Copyright (C) 2004 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.";
+ and Alexandre Duret-Lutz <adl\@gnu.org>.
+EOF
exit 0;
}
sub parse_arguments ()
{
my $print_and_exit = 0;
+ my $diff_command;
my %cli_options =
(
@automake_includes = ();
@system_includes = ($_[1])
},
+ 'diff:s' => \$diff_command,
+ 'dry-run' => \$dry_run,
'force' => \$force_output,
'I=s' => \@user_includes,
+ 'install' => \$install,
'output=s' => \$output_file,
'print-ac-dir' => \$print_and_exit,
'verbose' => sub { setup_channel 'verb', silent => 0; },
- 'W|warnings:s' => \&parse_warnings,
+ 'W|warnings=s' => \&parse_warnings,
);
use Getopt::Long;
Getopt::Long::config ("bundling", "pass_through");
or exit 1;
@ARGV = @ARGV_backup;
- # Now *really* process the options. This time we know
- # that --help and --version are not present.
- Getopt::Long::GetOptions %cli_options
+ # Now *really* process the options. This time we know that --help
+ # and --version are not present, but we specify them nonetheless so
+ # that ambiguous abbreviation are diagnosed.
+ Getopt::Long::GetOptions %cli_options, 'version' => sub {}, 'help' => sub {}
or exit 1;
if (@ARGV)
{
- fatal ("unrecognized option `$ARGV[0]'\n"
- . "Try `$0 --help' for more information.");
+ my %argopts;
+ for my $k (keys %cli_options)
+ {
+ if ($k =~ /(.*)=s$/)
+ {
+ map { $argopts{(length ($_) == 1)
+ ? "-$_" : "--$_" } = 1; } (split (/\|/, $1));
+ }
+ }
+ if (exists $argopts{$ARGV[0]})
+ {
+ fatal ("option `$ARGV[0]' requires an argument\n"
+ . "Try `$0 --help' for more information.");
+ }
+ else
+ {
+ fatal ("unrecognized option `$ARGV[0]'\n"
+ . "Try `$0 --help' for more information.");
+ }
}
if ($print_and_exit)
exit 0;
}
+ if (defined $diff_command)
+ {
+ $diff_command = 'diff -u' if $diff_command eq '';
+ @diff_command = split (' ', $diff_command);
+ $install = 1;
+ $dry_run = 1;
+ }
+
+ if ($install && !@user_includes)
+ {
+ fatal ("--install should copy macros in the directory indicated by the"
+ . "\nfirst -I option, but no -I was supplied.");
+ }
+
if (! -d $system_includes[0])
{
# By default $(datadir)/aclocal doesn't exist. We don't want to
# strip off newlines and end-of-line comments
s/\s*\#.*$//;
chomp;
- push (@system_includes, $_) if -d $_;
+ foreach my $dir (glob)
+ {
+ push (@system_includes, $dir) if -d $dir;
+ }
}
close (DIRLIST);
}
parse_WARNINGS; # Parse the WARNINGS environment variable.
parse_arguments;
$configure_ac = require_configure_ac;
-scan_m4_files (@user_includes, @automake_includes, @system_includes);
-scan_configure;
-if (! $exit_code)
+
+# We may have to rerun aclocal if some file have been installed, but
+# it should not happen more than once. The reason we must run again
+# is that once the file has been moved from /usr/share/aclocal/ to the
+# local m4/ directory it appears at a new place in the search path,
+# hence it should be output at a different position in aclocal.m4. If
+# we did not rerun aclocal, the next run of aclocal would produce a
+# different aclocal.m4.
+my $loop = 0;
+while (1)
{
+ ++$loop;
+ prog_error "Too many loops." if $loop > 2;
+
+ reset_maps;
+ scan_m4_files;
+ scan_configure;
+ last if $exit_code;
my %macro_traced = trace_used_macros;
- write_aclocal ($output_file, keys %macro_traced);
+ last if write_aclocal ($output_file, keys %macro_traced);
+ last if $dry_run;
}
check_acinclude;
projects / platform / upstream / automake.git / blobdiff