49 lines
993 B
Plaintext
49 lines
993 B
Plaintext
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#!/usr/bin/perl -W
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%include = ();
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die "Usage: scandeps prefix object_dirs -- sources" if (@ARGV < 4);
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$prefix = shift @ARGV;
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$prefix = $prefix; # silence warning
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@objdirs = ();
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while (($z = shift @ARGV) ne "--") {
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push @objdirs, $z;
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}
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# scan all files for relevant #include lines
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foreach my $file (@ARGV) {
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open FILE, "<$file" or die "Failed to open $file: $!";
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while (my $line = <FILE>) {
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if ($line =~ m|#include "$prefix/?([^"]+)"|) {
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$include{$file}{$1} = 1;
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}
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}
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close FILE;
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}
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# output dependencies
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foreach my $file (@ARGV) {
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next unless $file =~ m|([^/]+)[.]c$|;
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%deps = ();
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search_deps($file);
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foreach my $z (@objdirs) {
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print "$z/$1.o ";
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}
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print ": $file ";
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foreach my $z (sort keys %deps) { print "$z " }
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print "\n";
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}
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sub search_deps {
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my $file = shift;
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return unless exists $include{$file};
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foreach my $z (keys %{$include{$file}}) {
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next if exists $deps{$z};
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$deps{$z} = 1;
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search_deps($z);
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}
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}
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