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#!/usr/bin/perl
use strict;
use warnings;
# This used to be a wrapper around cc -M; however, this is a very slow
# operation and we don't conditionally include our own files often enough
# to justify the full preprocesor invocation for all ~200 files.
my %f2dep;
sub gendep;
sub gendep {
my $f = shift;
my $basedir = $f =~ m#(.*)/# ? $1 : '.';
return $f2dep{$f} if exists $f2dep{$f};
$f2dep{$f} = '';
my %dep;
open my $in, '<', $f;
while (<$in>) {
if (/^\s*#\s*include\s*"([^"]+)"/) {
my $inc = $1;
for my $loc ("$basedir/$inc", "../include/$inc") {
next unless -e $loc;
$dep{$loc}++;
$dep{$_}++ for split / /, gendep $loc;
}
}
}
close $in;
$f2dep{$f} = join ' ', sort keys %dep;
$f2dep{$f};
}
for my $file (@ARGV) {
if (-e $file && $file =~ /cpp$/) {
gendep $file;
my($path,$base) = $file =~ m#^((?:.*/)?)([^/]+)\.cpp#;
my $cmd = "$path.$base.d";
my $ext = $path eq 'modules/' || $path eq 'commands/' ? '.so' : '.o';
my $out = "$path$base$ext";
open OUT, '>', $cmd;
print OUT "$out: $file $f2dep{$file}\n";
print OUT "\t@../make/unit-cc.pl \$(VERBOSE) $file $out\n";
print OUT "$cmd: $file $f2dep{$file}\n";
print OUT "\t../make/calcdep.pl $file\n";
} elsif (-d $file && $file =~ m#^(.*?)([^/]+)/?$#) {
my($path,$base) = ($1,$2);
my $cmd = "$path.$base.d";
my $out = "$path$base.so";
opendir DIR, $file;
my $ofiles = join ' ', grep s#(.*)\.cpp$#$path$base/$1.o#, readdir DIR;
closedir DIR;
open OUT, '>', $cmd;
print OUT "$out: $ofiles\n\t".'$(RUNCC) $(PICLDFLAGS) -o $@ '
.$ofiles."\n";
print OUT "$cmd: $file\n\t".'@../make/calcdep.pl '."$path$base\n";
} else {
print "Cannot generate depencency for $file\n";
exit 1;
}
}
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