mirror of
https://github.com/netwide-assembler/nasm.git
synced 2024-11-27 08:10:07 +08:00
177a05d0ce
Clean up some perl warnings, some of which were legitimate (apparently undef doesn't actually take a list of arguments, a common enough mistake that it is mentioned in the man page!, and a list of variables after "my" can be cantankerous), and some of which were nuisance but were easy enough to clean up. Maybe this can resolve the problems with very old version of Perl? Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
321 lines
8.3 KiB
Perl
Executable File
321 lines
8.3 KiB
Perl
Executable File
#!/usr/bin/perl
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## --------------------------------------------------------------------------
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##
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## Copyright 1996-2017 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 $do_external = 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 $done = 0;
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while ( defined($line = <$in>) && !$done ) {
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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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$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 $barrier ) {
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$done = 1; # Stop reading input 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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if ( !$is_external || $externalize ) {
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print $out @outfile;
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} else {
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print $out $barrier; # Start generated file with barrier
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}
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if ( $externalize ) {
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if ( $is_external && defined($include_command) ) {
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print $out "$include_command $external\n";
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}
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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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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; # Futher 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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