325 lines
8.4 KiB
Perl
Executable file
325 lines
8.4 KiB
Perl
Executable file
#!/usr/bin/perl
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## --------------------------------------------------------------------------
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##
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## Copyright 1996-2020 The NASM Authors - All Rights Reserved
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## See the file AUTHORS included with the NASM distribution for
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## the specific copyright holders.
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##
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## Redistribution and use in source and binary forms, with or without
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## modification, are permitted provided that the following
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## conditions are met:
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##
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## * Redistributions of source code must retain the above copyright
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## notice, this list of conditions and the following disclaimer.
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## * Redistributions in binary form must reproduce the above
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## copyright notice, this list of conditions and the following
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## disclaimer in the documentation and/or other materials provided
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## with the distribution.
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##
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## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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## CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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## INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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## MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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## DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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## CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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## NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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## LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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## HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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## CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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## OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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## EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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##
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## --------------------------------------------------------------------------
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#
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# Script to create Makefile-style dependencies.
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#
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# Usage:
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# perl mkdep.pl [-s path-separator][-o obj-ext] dir... > deps
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# perl mkdep.pl [-i][-e][-m makefile]...[-M makefile... --] dir...
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#
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use File::Spec;
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use File::Basename;
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use File::Copy;
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use File::Temp;
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use Fcntl;
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$barrier = "#-- Everything below is generated by mkdep.pl - do not edit --#\n";
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# This converts from filenames to full pathnames for our dependencies
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%dep_path = ();
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# List of files that cannot be found; these *must* be excluded
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@must_exclude = ();
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#
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# Scan files for dependencies
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#
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sub scandeps($) {
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my($file) = @_;
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my $line;
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my %xdeps;
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my %mdeps;
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open(my $fh, '<', $file)
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or return; # If not openable, assume generated
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while ( defined($line = <$fh>) ) {
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chomp $line;
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$line =~ s:/\*.*\*/::g;
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$line =~ s://.*$::;
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if ( $line =~ /^\s*\#\s*include\s+\"(.*)\"\s*$/ ) {
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my $nf = $1;
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if (!defined($dep_path{$nf})) {
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push(@must_exclude, $nf);
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next;
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}
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$nf = $dep_path{$nf};
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$mdeps{$nf}++;
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$xdeps{$nf}++ unless ( defined($deps{$nf}) );
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}
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}
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close($fh);
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$deps{$file} = [keys(%mdeps)];
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foreach my $xf ( keys(%xdeps) ) {
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scandeps($xf);
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}
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}
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# %deps contains direct dependencies. This subroutine resolves
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# indirect dependencies that result.
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sub alldeps($$) {
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my($file, $level) = @_;
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my %adeps;
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foreach my $dep ( @{$deps{$file}} ) {
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$adeps{$dep} = 1;
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foreach my $idep ( alldeps($dep, $level+1) ) {
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$adeps{$idep} = 1;
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}
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}
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return sort(keys(%adeps));
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}
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# This converts a filename from host syntax to target syntax
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# This almost certainly works only on relative filenames...
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sub convert_file($$) {
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my($file,$sep) = @_;
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my @fspec = (basename($file));
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while ( ($file = dirname($file)) ne File::Spec->curdir() &&
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$file ne File::Spec->rootdir() ) {
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unshift(@fspec, basename($file));
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}
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if ( $sep eq '' ) {
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# This means kill path completely. Used with Makes who do
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# path searches, but doesn't handle output files in subdirectories,
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# like OpenWatcom WMAKE.
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return $fspec[scalar(@fspec)-1];
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} else {
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return join($sep, @fspec);
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}
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}
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#
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# Insert dependencies into a Makefile
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#
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sub _insert_deps($$) {
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my($file, $out) = @_;
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open(my $in, '<', $file)
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or die "$0: Cannot open input: $file\n";
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my ($line, $parm, $val);
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my $obj = '.o'; # Defaults
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my $sep = '/';
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my $cont = "\\";
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my $include_command = undef;
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my $selfrule = 0;
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my $maxline = 78; # Seems like a reasonable default
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my %exclude = (); # Don't exclude anything
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my @genhdrs = ();
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my $external = undef;
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my $raw_output = 0;
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my @outfile = ();
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my $is_external = 0;
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while ( defined($line = <$in>) ) {
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if ( $line =~ /^([^\s\#\$\:]+\.h):/ ) {
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# Note: we trust the first Makefile given best
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my $fpath = $1;
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my $fbase = basename($fpath);
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if (!defined($dep_path{$fbase})) {
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$dep_path{$fbase} = $fpath;
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print STDERR "Makefile: $fbase -> $fpath\n";
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}
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} elsif ( $line =~ /^\s*\#\s*@([a-z0-9-]+):\s*\"([^\"]*)\"/ ) {
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$parm = $1; $val = $2;
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if ( $parm eq 'object-ending' ) {
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$obj = $val;
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} elsif ( $parm eq 'path-separator' ) {
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$sep = $val;
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} elsif ( $parm eq 'line-width' ) {
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$maxline = $val+0;
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} elsif ( $parm eq 'continuation' ) {
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$cont = $val;
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} elsif ( $parm eq 'exclude' ) {
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$excludes{$val}++;
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} elsif ( $parm eq 'include-command' ) {
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$include_command = $val;
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} elsif ( $parm eq 'external' ) {
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# Keep dependencies in an external file
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$external = $val;
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} elsif ( $parm eq 'selfrule' ) {
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$selfrule = !!$val;
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}
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} elsif ( $line =~ /^(\s*\#?\s*EXTERNAL_DEPENDENCIES\s*=\s*)([01])\s*$/ ) {
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# If this line is not present, we cannot externalize
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$is_external = $externalize ? 1 : $force_inline ? 0 : $2+0;
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$line = $1.$is_external."\n";
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} elsif ( $line eq $barrier ) {
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last; # Stop reading at barrier line
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}
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push @outfile, $line;
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}
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close($in);
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$is_external = $is_external && defined($external);
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undef $external if ( !$is_external );
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if ( !$is_external || $externalize ) {
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print $out @outfile;
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}
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print $out $barrier;
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if ( $externalize ) {
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# Just strip internal file dependency information
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if (defined($include_command)) {
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print $out "$include_command $external\n";
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}
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unlink($external);
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return undef;
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}
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my $e;
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foreach my $dfile ($external, sort(keys(%deps)) ) {
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my $ofile;
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my @deps;
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next unless (defined($dfile));
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if ( $selfrule && $dfile eq $external ) {
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$ofile = convert_file($dfile, $sep).':';
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@deps = sort(keys(%deps));
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} elsif ( $dfile =~ /^(.*)\.[Cc]$/ ) {
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$ofile = convert_file($1, $sep).$obj.':';
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@deps = ($dfile,alldeps($dfile,1));
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}
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if (defined($ofile)) {
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my $len = length($ofile);
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print $out $ofile;
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foreach my $dep (@deps) {
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unless ($excludes{$dep}) {
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my $str = convert_file($dep, $sep);
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my $sl = length($str)+1;
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if ( $len+$sl > $maxline-2 ) {
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print $out ' ', $cont, "\n ", $str;
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$len = $sl;
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} else {
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print $out ' ', $str;
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$len += $sl;
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}
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}
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}
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print $out "\n";
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}
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}
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return $external;
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}
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sub insert_deps($)
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{
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my($mkfile) = @_;
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my $tmp = File::Temp->new(DIR => dirname($mkfile));
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my $tmpname = $tmp->filename;
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my $newname = _insert_deps($mkfile, $tmp);
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close($tmp);
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$newname = $mkfile unless(defined($newname));
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move($tmpname, $newname);
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}
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#
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# Main program
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#
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my %deps = ();
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my @files = ();
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my @mkfiles = ();
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my $mkmode = 0;
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$force_inline = 0;
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$externalize = 0;
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$debug = 0;
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while ( defined(my $arg = shift(@ARGV)) ) {
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if ( $arg eq '-m' ) {
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$arg = shift(@ARGV);
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push(@mkfiles, $arg);
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} elsif ( $arg eq '-i' ) {
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$force_inline = 1;
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} elsif ( $arg eq '-e' ) {
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$externalize = 1;
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} elsif ( $arg eq '-d' ) {
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$debug++;
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} elsif ( $arg eq '-M' ) {
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$mkmode = 1; # Further filenames are output Makefile names
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} elsif ( $arg eq '--' && $mkmode ) {
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$mkmode = 0;
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} elsif ( $arg =~ /^-/ ) {
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die "Unknown option: $arg\n";
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} else {
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if ( $mkmode ) {
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push(@mkfiles, $arg);
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} else {
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push(@files, $arg);
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}
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}
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}
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my @cfiles = ();
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foreach my $dir ( @files ) {
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opendir(DIR, $dir) or die "$0: Cannot open directory: $dir";
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while ( my $file = readdir(DIR) ) {
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$path = ($dir eq File::Spec->curdir())
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? $file : File::Spec->catfile($dir,$file);
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if ( $file =~ /\.[Cc]$/ ) {
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push(@cfiles, $path);
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} elsif ( $file =~ /\.[Hh]$/ ) {
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print STDERR "Filesystem: $file -> $path\n" if ( $debug );
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$dep_path{$file} = $path; # Allow the blank filename
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$dep_path{$path} = $path; # Also allow the full pathname
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}
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}
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closedir(DIR);
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}
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foreach my $cfile ( @cfiles ) {
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scandeps($cfile);
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}
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foreach my $mkfile ( @mkfiles ) {
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insert_deps($mkfile);
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}
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