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#!/usr/bin/env perl
#
# filter-showIncludes.pl depfile.d objfile.o orginal.cxx
#
# Create dependency information from the output of cl.exe's showInclude. It
# needs additional information - the output name to which to write, objfile
# that depends on the includes, and the original file name.
#
# It also consolidates the file names to a canonical form, and filters out
# duplicates.
#
# LGPL v3 / GPL v3 / MPL 1.1
#
# Original author: Jan Holesovsky <kendy@suse.cz>
my $outfile = $ARGV[0];
my $objfile = $ARGV[1];
my $srcfile = $ARGV[2];
if ( !defined $outfile || !defined $objfile || !defined $srcfile ) {
die "Not enough parameters to create dependencies.";
}
my $showincludes_prefix = $ENV{'SHOWINCLUDES_PREFIX'};
if ( !defined( $showincludes_prefix ) || $showincludes_prefix eq "" ) {
$showincludes_prefix = 'Note: including file:';
}
open( OUT, "> $outfile" ) or die "Cannot open $outfile for writing.";
print OUT "$objfile: \\\n $srcfile";
my %seen;
my $first_line = 1;
while ( <STDIN> ) {
if ( /^$showincludes_prefix/ ) {
s/^$showincludes_prefix\s*//;
s/\r$//;
chomp;
s/\\/\//g;
# X: -> /cygdrive/x/
s/^(.):/\/cygdrive\/\l\1/;
s/ /\\ /g;
if ( !defined $seen{$_} ) {
$seen{$_} = 1;
print OUT " \\\n $_";
}
}
else {
# skip the first line, it always just duplicates what is being
# compiled
print unless ( $first_line );
}
$first_line = 0;
}
print OUT "\n";
close( OUT ) or die "Cannot close $outfile.";
# vim: shiftwidth=4 softtabstop=4 expandtab:
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