394 lines
		
	
	
	
		
			12 KiB
		
	
	
	
		
			Perl
		
	
	
		
			Executable file
		
	
	
	
	
			
		
		
	
	
			394 lines
		
	
	
	
		
			12 KiB
		
	
	
	
		
			Perl
		
	
	
		
			Executable file
		
	
	
	
	
#!/usr/bin/perl -w
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######################################################################
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# Do not call this script directly!
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#
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# The generate script ensures that @INC is correct before the engine
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# is executed.
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#
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# Copyright (C) 2009 Marius Storm-Olsen <mstormo@gmail.com>
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######################################################################
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use strict;
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use File::Basename;
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use File::Spec;
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use Cwd;
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use Generators;
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use Text::ParseWords;
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my (%build_structure, %compile_options, @makedry);
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my $out_dir = getcwd();
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my $git_dir = $out_dir;
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$git_dir =~ s=\\=/=g;
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$git_dir = dirname($git_dir) while (!-e "$git_dir/git.c" && "$git_dir" ne "");
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die "Couldn't find Git repo" if ("$git_dir" eq "");
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my @gens = Generators::available();
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my $gen = "Vcproj";
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sub showUsage
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{
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    my $genlist = join(', ', @gens);
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    print << "EOM";
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generate usage:
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  -g <GENERATOR>  --gen <GENERATOR> Specify the buildsystem generator    (default: $gen)
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                                    Available: $genlist
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  -o <PATH>       --out <PATH>      Specify output directory generation  (default: .)
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                  --make-out <PATH> Write the output of GNU Make into a file
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  -i <FILE>       --in <FILE>       Specify input file, instead of running GNU Make
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  -h,-?           --help            This help
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EOM
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    exit 0;
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}
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# Parse command-line options
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my $make_out;
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while (@ARGV) {
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    my $arg = shift @ARGV;
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    if ("$arg" eq "-h" || "$arg" eq "--help" || "$arg" eq "-?") {
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	showUsage();
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	exit(0);
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    } elsif("$arg" eq "--out" || "$arg" eq "-o") {
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	$out_dir = shift @ARGV;
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    } elsif("$arg" eq "--make-out") {
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	$make_out = shift @ARGV;
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    } elsif("$arg" eq "--gen" || "$arg" eq "-g") {
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	$gen = shift @ARGV;
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    } elsif("$arg" eq "--in" || "$arg" eq "-i") {
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	my $infile = shift @ARGV;
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        open(F, "<$infile") || die "Couldn't open file $infile";
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        @makedry = <F>;
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        close(F);
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    } else {
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        die "Unknown option: " . $arg;
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    }
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}
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# NOT using File::Spec->rel2abs($path, $base) here, as
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# it fails badly for me in the msysgit environment
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$git_dir = File::Spec->rel2abs($git_dir);
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$out_dir = File::Spec->rel2abs($out_dir);
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my $rel_dir = makeOutRel2Git($git_dir, $out_dir);
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# Print some information so the user feels informed
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print << "EOM";
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-----
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Generator: $gen
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Git dir:   $git_dir
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Out dir:   $out_dir
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-----
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Running GNU Make to figure out build structure...
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EOM
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# Pipe a make --dry-run into a variable, if not already loaded from file
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# Capture the make dry stderr to file for review (will be empty for a release build).
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my $ErrsFile = "msvc-build-makedryerrors.txt";
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@makedry = `make -C $git_dir -n MSVC=1 SKIP_VCPKG=1 V=1 2>$ErrsFile`
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if !@makedry;
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# test for an empty Errors file and remove it
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unlink $ErrsFile if -f -z $ErrsFile;
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if (defined $make_out) {
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    open OUT, ">" . $make_out;
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    print OUT @makedry;
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    close OUT;
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}
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# Parse the make output into usable info
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parseMakeOutput();
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# Finally, ask the generator to start generating..
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Generators::generate($gen, $git_dir, $out_dir, $rel_dir, %build_structure);
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# main flow ends here
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# -------------------------------------------------------------------------------------------------
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# 1) path: /foo/bar/baz        2) path: /foo/bar/baz   3) path: /foo/bar/baz
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#    base: /foo/bar/baz/temp      base: /foo/bar          base: /tmp
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#    rel:  ..                     rel:  baz               rel:  ../foo/bar/baz
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sub makeOutRel2Git
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{
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    my ($path, $base) = @_;
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    my $rel;
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    if ("$path" eq "$base") {
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        return ".";
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    } elsif ($base =~ /^$path/) {
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        # case 1
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        my $tmp = $base;
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        $tmp =~ s/^$path//;
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        foreach (split('/', $tmp)) {
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            $rel .= "../" if ("$_" ne "");
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        }
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    } elsif ($path =~ /^$base/) {
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        # case 2
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        $rel = $path;
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        $rel =~ s/^$base//;
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        $rel = "./$rel";
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    } else {
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        my $tmp = $base;
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        foreach (split('/', $tmp)) {
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            $rel .= "../" if ("$_" ne "");
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        }
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        $rel .= $path;
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    }
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    $rel =~ s/\/\//\//g; # simplify
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    $rel =~ s/\/$//;     # don't end with /
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    return $rel;
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}
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sub parseMakeOutput
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{
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    print "Parsing GNU Make output to figure out build structure...\n";
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    my $line = 0;
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    while (my $text = shift @makedry) {
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        my $ate_next;
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        do {
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            $ate_next = 0;
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            $line++;
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            chomp $text;
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            chop $text if ($text =~ /\r$/);
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            if ($text =~ /\\$/) {
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                $text =~ s/\\$//;
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                $text .= shift @makedry;
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                $ate_next = 1;
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            }
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        } while($ate_next);
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        if ($text =~ /^test /) {
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            # options to test (eg -o) may be mistaken for linker options
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            next;
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        }
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        if ($text =~ /^(mkdir|msgfmt) /) {
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            # options to the Portable Object translations
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            # the line "mkdir ... && msgfmt ..." contains no linker options
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            next;
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        }
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        if($text =~ / -c /) {
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            # compilation
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            handleCompileLine($text, $line);
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        } elsif ($text =~ / -o /) {
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            # linking executable
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            handleLinkLine($text, $line);
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        } elsif ($text =~ /\.o / && $text =~ /\.a /) {
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            # libifying
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            handleLibLine($text, $line);
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#
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#        } elsif ($text =~ /^cp /) {
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#            # copy file around
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#
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#        } elsif ($text =~ /^rm -f /) {
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#            # shell command
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#
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#        } elsif ($text =~ /^make[ \[]/) {
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#            # make output
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#
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#        } elsif ($text =~ /^echo /) {
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#            # echo to file
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#
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#        } elsif ($text =~ /^if /) {
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#            # shell conditional
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#
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#        } elsif ($text =~ /^tclsh /) {
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#            # translation stuff
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#
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#        } elsif ($text =~ /^umask /) {
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#            # handling boilerplates
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#
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#        } elsif ($text =~ /\$\(\:\)/) {
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#            # ignore
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#
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#        } elsif ($text =~ /^FLAGS=/) {
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#            # flags check for dependencies
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#
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#        } elsif ($text =~ /^'\/usr\/bin\/perl' -MError -e/) {
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#            # perl commands for copying files
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#
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#        } elsif ($text =~ /generate-cmdlist\.sh/) {
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#            # command for generating list of commands
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#
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#        } elsif ($text =~ /new locations or Tcl/) {
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#            # command for detecting Tcl/Tk changes
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#
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#        } elsif ($text =~ /mkdir -p/) {
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#            # command creating path
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#
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#        } elsif ($text =~ /: no custom templates yet/) {
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#            # whatever
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#
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#        } else {
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#            print "Unhandled (line: $line): $text\n";
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        }
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    }
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#    use Data::Dumper;
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#    print "Parsed build structure:\n";
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#    print Dumper(%build_structure);
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}
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# variables for the compilation part of each step
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my (@defines, @incpaths, @cflags, @sources);
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sub clearCompileStep
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{
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    @defines = ();
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    @incpaths = ();
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    @cflags = ();
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    @sources = ();
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}
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sub removeDuplicates
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{
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    my (%dupHash, $entry);
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    %dupHash = map { $_, 1 } @defines;
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    @defines = keys %dupHash;
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    %dupHash = map { $_, 1 } @incpaths;
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    @incpaths = keys %dupHash;
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    %dupHash = map { $_, 1 } @cflags;
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    @cflags = keys %dupHash;
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}
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sub handleCompileLine
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{
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    my ($line, $lineno) = @_;
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    my @parts = shellwords($line);
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    my $sourcefile;
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    shift(@parts); # ignore cmd
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    while (my $part = shift @parts) {
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        if ("$part" eq "-o") {
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            # ignore object file
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            shift @parts;
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        } elsif ("$part" eq "-c") {
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            # ignore compile flag
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        } elsif ("$part" eq "-c") {
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        } elsif ($part =~ /^.?-I/) {
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            push(@incpaths, $part);
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        } elsif ($part =~ /^.?-D/) {
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            push(@defines, $part);
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        } elsif ($part =~ /^-/) {
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            push(@cflags, $part);
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        } elsif ($part =~ /\.(c|cc|cpp)$/) {
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            $sourcefile = $part;
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        } else {
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            die "Unhandled compiler option @ line $lineno: $part";
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        }
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    }
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    @{$compile_options{"${sourcefile}_CFLAGS"}} = @cflags;
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    @{$compile_options{"${sourcefile}_DEFINES"}} = @defines;
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    @{$compile_options{"${sourcefile}_INCPATHS"}} = @incpaths;
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    clearCompileStep();
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}
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sub handleLibLine
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{
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    my ($line, $lineno) = @_;
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    my (@objfiles, @lflags, $libout, $part);
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    # kill cmd and rm 'prefix'
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    $line =~ s/^rm -f .* && .* rcs //;
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    my @parts = shellwords($line);
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    while ($part = shift @parts) {
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        if ($part =~ /^-/) {
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            push(@lflags, $part);
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        } elsif ($part =~ /\.(o|obj)$/) {
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            push(@objfiles, $part);
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        } elsif ($part =~ /\.(a|lib)$/) {
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            $libout = $part;
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            $libout =~ s/\.a$//;
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        } else {
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            die "Unhandled lib option @ line $lineno: $part";
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        }
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    }
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#    print "LibOut: '$libout'\nLFlags: @lflags\nOfiles: @objfiles\n";
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#    exit(1);
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    foreach (@objfiles) {
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        my $sourcefile = $_;
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        $sourcefile =~ s/\.o$/.c/;
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        push(@sources, $sourcefile);
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        push(@cflags, @{$compile_options{"${sourcefile}_CFLAGS"}});
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        push(@defines, @{$compile_options{"${sourcefile}_DEFINES"}});
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        push(@incpaths, @{$compile_options{"${sourcefile}_INCPATHS"}});
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    }
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    removeDuplicates();
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    push(@{$build_structure{"LIBS"}}, $libout);
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    @{$build_structure{"LIBS_${libout}"}} = ("_DEFINES", "_INCLUDES", "_CFLAGS", "_SOURCES",
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                                             "_OBJECTS");
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    @{$build_structure{"LIBS_${libout}_DEFINES"}} = @defines;
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    @{$build_structure{"LIBS_${libout}_INCLUDES"}} = @incpaths;
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    @{$build_structure{"LIBS_${libout}_CFLAGS"}} = @cflags;
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    @{$build_structure{"LIBS_${libout}_LFLAGS"}} = @lflags;
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    @{$build_structure{"LIBS_${libout}_SOURCES"}} = @sources;
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    @{$build_structure{"LIBS_${libout}_OBJECTS"}} = @objfiles;
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    clearCompileStep();
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}
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sub handleLinkLine
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{
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    my ($line, $lineno) = @_;
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    my (@objfiles, @lflags, @libs, $appout, $part);
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    my @parts = shellwords($line);
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    shift(@parts); # ignore cmd
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    while ($part = shift @parts) {
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        if ($part =~ /^-IGNORE/) {
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            push(@lflags, $part);
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        } elsif ($part =~ /^-[GRIMDO]/) {
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            # eat compiler flags
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        } elsif ("$part" eq "-o") {
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            $appout = shift @parts;
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        } elsif ("$part" eq "-lz") {
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            push(@libs, "zlib.lib");
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        } elsif ("$part" eq "-lcrypto") {
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            push(@libs, "libeay32.lib");
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        } elsif ("$part" eq "-lssl") {
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            push(@libs, "ssleay32.lib");
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        } elsif ("$part" eq "-lcurl") {
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            push(@libs, "libcurl.lib");
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        } elsif ("$part" eq "-lexpat") {
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            push(@libs, "expat.lib");
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        } elsif ("$part" eq "-liconv") {
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            push(@libs, "libiconv.lib");
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        } elsif ($part =~ /^[-\/]/) {
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            push(@lflags, $part);
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        } elsif ($part =~ /\.(a|lib)$/) {
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            $part =~ s/\.a$/.lib/;
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            push(@libs, $part);
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        } elsif ($part eq 'invalidcontinue.obj') {
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            # ignore - known to MSVC
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        } elsif ($part =~ /\.o$/) {
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            push(@objfiles, $part);
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        } elsif ($part =~ /\.obj$/) {
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            # do nothing, 'make' should not be producing .obj, only .o files
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        } else {
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            die "Unhandled link option @ line $lineno: $part";
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        }
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    }
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#    print "AppOut: '$appout'\nLFlags: @lflags\nLibs  : @libs\nOfiles: @objfiles\n";
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#    exit(1);
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    foreach (@objfiles) {
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        my $sourcefile = $_;
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        $sourcefile =~ s/\.o$/.c/;
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        push(@sources, $sourcefile);
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        push(@cflags, @{$compile_options{"${sourcefile}_CFLAGS"}});
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        push(@defines, @{$compile_options{"${sourcefile}_DEFINES"}});
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        push(@incpaths, @{$compile_options{"${sourcefile}_INCPATHS"}});
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    }
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    removeDuplicates();
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    removeDuplicates();
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    push(@{$build_structure{"APPS"}}, $appout);
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    @{$build_structure{"APPS_${appout}"}} = ("_DEFINES", "_INCLUDES", "_CFLAGS", "_LFLAGS",
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                                             "_SOURCES", "_OBJECTS", "_LIBS");
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    @{$build_structure{"APPS_${appout}_DEFINES"}} = @defines;
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    @{$build_structure{"APPS_${appout}_INCLUDES"}} = @incpaths;
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    @{$build_structure{"APPS_${appout}_CFLAGS"}} = @cflags;
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    @{$build_structure{"APPS_${appout}_LFLAGS"}} = @lflags;
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    @{$build_structure{"APPS_${appout}_SOURCES"}} = @sources;
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    @{$build_structure{"APPS_${appout}_OBJECTS"}} = @objfiles;
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    @{$build_structure{"APPS_${appout}_LIBS"}} = @libs;
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    clearCompileStep();
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}
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