-#!@PERL@
+#!@PERL@ -w
# -*- perl -*-
# @configure_input@
unshift @INC, (split '@PATH_SEPARATOR@', $perllibdir);
}
+use strict;
+
use Automake::Config;
use Automake::General;
use Automake::Configure_ac;
# Note that this isn't pkgdatadir, but a separate directory.
# Note also that the versioned directory is handled later.
-$acdir = '@datadir@/aclocal';
-$default_acdir = $acdir;
+my $acdir = '@datadir@/aclocal';
+my $default_acdir = $acdir;
# contains a list of directories, one per line, to be added
# to the dirlist in addition to $acdir, as if -I had been
# added to the command line. If acdir has been redirected,
# we will also check the specified acdir (this is done later).
-$default_dirlist = "$default_acdir/dirlist";
+my $default_dirlist = "$default_acdir/dirlist";
# Some globals.
my $configure_ac;
# Output file name.
-$output_file = 'aclocal.m4';
+my $output_file = 'aclocal.m4';
# Modification time of the youngest dependency.
-$greatest_mtime = 0;
+my $greatest_mtime = 0;
# Option --force.
-$force_output = 0;
+my $force_output = 0;
# Which macros have been seen.
-%macro_seen = ();
+my %macro_seen = ();
# Which files have been seen.
-%file_seen = ();
+my %file_seen = ();
# Remember the order into which we scanned the files.
# It's important to output the contents of aclocal.m4 in the opposite order.
# (Definitions in first files we have scanned should override those from
# later files. So they must appear last in the output.)
-@file_order = ();
+my @file_order = ();
# Map macro names to file names.
-%map = ();
+my %map = ();
# Ditto, but records the last definition of each macro as returned by --trace.
-%map_traced_defs = ();
+my %map_traced_defs = ();
# Map file names to file contents.
-%file_contents = ();
+my %file_contents = ();
# Map file names to included files (transitively closed).
-%file_includes = ();
+my %file_includes = ();
# How much to say.
-$verbose = 0;
+my $verbose = 0;
# Matches a macro definition.
# AC_DEFUN([macroname], ...)
# When macroname is `['-quoted , we accept any character in the name,
# except `]'. Otherwise macroname stops on the first `]', `,', `)',
# or `\n' encountered.
-$ac_defun_rx = "(?:A[CU]_DEFUN|AC_DEFUN_ONCE)\\((?:\\[([^]]+)\\]|([^],)\n]+))";
+my $ac_defun_rx =
+ "(?:A[CU]_DEFUN|AC_DEFUN_ONCE)\\((?:\\[([^]]+)\\]|([^],)\n]+))";
# Matches an AC_REQUIRE line.
-$ac_require_rx = "AC_REQUIRE\\((?:\\[([^]]+)\\]|([^],)\n]+))\\)";
+my $ac_require_rx = "AC_REQUIRE\\((?:\\[([^]]+)\\]|([^],)\n]+))\\)";
# Matches an m4_include line
-$m4_include_rx = "(?:m4_)?s?include\\((?:\\[([^]]+)\\]|([^],)\n]+))\\)";
+my $m4_include_rx = "(?:m4_)?s?include\\((?:\\[([^]]+)\\]|([^],)\n]+))\\)";
\f
################################################################
# Scan all the installed m4 files and construct a map.
sub scan_m4_files (@)
{
- local (@dirlist) = @_;
+ my @dirlist = @_;
- # First, scan configure.ac. It may contain macro definitions,
- # or may include other files that define macros.
- &scan_file ($configure_ac, 'aclocal');
+ # First, scan configure.ac. It may contain macro definitions,
+ # or may include other files that define macros.
+ &scan_file ($configure_ac, 'aclocal');
- # Then, scan acinclude.m4 if it exists.
- if (-f 'acinclude.m4')
+ # Then, scan acinclude.m4 if it exists.
+ if (-f 'acinclude.m4')
{
- &scan_file ('acinclude.m4', 'aclocal');
+ &scan_file ('acinclude.m4', 'aclocal');
}
- # Finally, scan all files in our search path.
- local ($m4dir);
- foreach $m4dir (@dirlist)
+ # Finally, scan all files in our search path.
+ foreach my $m4dir (@dirlist)
{
- if (! opendir (DIR, $m4dir))
- {
- print STDERR "aclocal: couldn't open directory `$m4dir': $!\n";
- exit 1;
- }
-
- local ($file, $fullfile);
- # We reverse the directory contents so that foo2.m4 gets
- # used in preference to foo1.m4.
- foreach $file (reverse sort grep (! /^\./, readdir (DIR)))
+ if (! opendir (DIR, $m4dir))
{
- # Only examine .m4 files.
- next unless $file =~ /\.m4$/;
+ print STDERR "aclocal: couldn't open directory `$m4dir': $!\n";
+ exit 1;
+ }
- # Skip some files when running out of srcdir.
- next if $file eq 'aclocal.m4';
+ # We reverse the directory contents so that foo2.m4 gets
+ # used in preference to foo1.m4.
+ foreach my $file (reverse sort grep (! /^\./, readdir (DIR)))
+ {
+ # Only examine .m4 files.
+ next unless $file =~ /\.m4$/;
- $fullfile = File::Spec->canonpath ("$m4dir/$file");
+ # Skip some files when running out of srcdir.
+ next if $file eq 'aclocal.m4';
+
+ my $fullfile = File::Spec->canonpath ("$m4dir/$file");
&scan_file ($fullfile, 'aclocal');
}
- closedir (DIR);
+ closedir (DIR);
}
- # Construct a new function that does the searching. We use a
- # function (instead of just evaluating $search in the loop) so that
- # "die" is correctly and easily propagated if run.
- my $search = "sub search {\nmy \$found = 0;\n";
- foreach my $key (reverse sort keys %map)
+ # Construct a new function that does the searching. We use a
+ # function (instead of just evaluating $search in the loop) so that
+ # "die" is correctly and easily propagated if run.
+ my $search = "sub search {\nmy \$found = 0;\n";
+ foreach my $key (reverse sort keys %map)
{
- $search .= ('if (/\b\Q' . $key . '\E(?!\w)/) { & add_macro ("' . $key
- . '"); $found = 1; }' . "\n");
+ $search .= ('if (/\b\Q' . $key . '\E(?!\w)/) { & add_macro ("' . $key
+ . '"); $found = 1; }' . "\n");
}
- $search .= "return \$found;\n};\n";
- eval $search;
- die "internal error: $@\n search is $search" if $@;
+ $search .= "return \$found;\n};\n";
+ eval $search;
+ die "internal error: $@\n search is $search" if $@;
}
################################################################
# Add a macro to the output.
sub add_macro ($)
{
- local ($macro) = @_;
+ my ($macro) = @_;
- # Ignore unknown required macros. Either they are not really
- # needed (e.g., a conditional AC_REQUIRE), in which case aclocal
- # should be quiet, or they are needed and Autoconf itself will
- # complain when we trace for macro usage later.
- return unless defined $map{$macro};
+ # Ignore unknown required macros. Either they are not really
+ # needed (e.g., a conditional AC_REQUIRE), in which case aclocal
+ # should be quiet, or they are needed and Autoconf itself will
+ # complain when we trace for macro usage later.
+ return unless defined $map{$macro};
- print STDERR "aclocal: saw macro $macro\n" if $verbose;
- $macro_seen{$macro} = 1;
- &add_file ($map{$macro});
+ print STDERR "aclocal: saw macro $macro\n" if $verbose;
+ $macro_seen{$macro} = 1;
+ &add_file ($map{$macro});
}
# scan_configure_dep ($file)
# Add a file to output.
sub add_file ($)
{
- local ($file) = @_;
+ my ($file) = @_;
# Only add a file once.
return if ($file_seen{$file});
my $base = dirname $file;
# Do not scan the same file twice.
- return @$file_includes{$file} if exists $file_includes{$file};
+ return @{$file_includes{$file}} if exists $file_includes{$file};
# Prevent potential infinite recursion (if two files include each other).
return () if exists $file_contents{$file};
%files = strip_redundant_includes %files;
delete $files{$configure_ac};
- for $file (grep { exists $files{$_} } @file_order)
+ for my $file (grep { exists $files{$_} } @file_order)
{
# Check the time stamp of this file, and all files it includes.
for my $ifile ($file, @{$file_includes{$file}})
# Print usage and exit.
sub usage ($)
{
- local ($status) = @_;
+ my ($status) = @_;
print "Usage: aclocal [OPTIONS] ...\n\n";
print "\
# Parse command line.
sub parse_arguments (@)
{
- local (@arglist) = @_;
- local (@dirlist);
- local ($print_and_exit) = 0;
+ my @arglist = @_;
+ my @dirlist;
+ my $print_and_exit = 0;
while (@arglist)
{
next if /^#/;
# strip off newlines and end-of-line comments
s/\s*\#.*$//;
- chomp ($contents=$_);
- if (-d $contents )
- {
- push (@dirlist, $contents);
- }
+ chomp;
+ push (@dirlist, $_) if -d $_;
}
close (DEFAULT_DIRLIST);
}
################################################################
-local (@dirlist) = parse_arguments (@ARGV);
+my @dirlist = parse_arguments (@ARGV);
$configure_ac = require_configure_ac;
scan_m4_files (@dirlist);
scan_configure;
projects / thirdparty / automake.git / commitdiff
