#!/usr/bin/perl -w
#
# Build the auto-generated parts of the Wine makefiles.
#
# Copyright 2006 Alexandre Julliard
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
#

# Make rules files
my %makerules =
(
 "MAKE_RULES" => "Make.rules",
 "MAKE_DLL_RULES" => "dlls/Makedll.rules",
 "MAKE_IMPLIB_RULES" => "dlls/Makeimplib.rules",
 "MAKE_TEST_RULES" => "dlls/Maketest.rules",
 "MAKE_PROG_RULES" => "programs/Makeprog.rules",
);

# Programs that we want to install in the bin directory too
my %bin_install =
(
  "msiexec" => 1,
  "notepad" => 1,
  "progman" => 1,
  "regedit" => 1,
  "regsvr32" => 1,
  "uninstaller" => 1,
  "wineboot" => 1,
  "winebrowser" => 1,
  "winecfg" => 1,
  "wineconsole" => 1,
  "winedbg" => 1,
  "winefile" => 1,
  "winemine" => 1,
  "winepath" => 1,
  "winhelp" => 1,
);

# Programs that we don't want to install at all
my %dont_install =
(
  "cmdlgtst" => 1,
  "view" => 1,
  "winetest" => 1,
);

# Special dlls that can be switched on or off by configure
my %special_dlls =
(
  "glu32"    => "GLU32FILES",
  "opengl32" => "OPENGLFILES",
  "wined3d"  => "OPENGLFILES",
  "winex11.drv" => "XFILES",
  "winequartz.drv" => "QUARTZFILES"
);

# Default patterns for top-level .gitignore
my @ignores = (
    "*.[oa]",
    "*.avi",
    "*.bmp",
    "*.chm",
    "*.cur",
    "*.ico",
    "*.mc.rc",
    "*.res",
    "*.so",
    "*.tab.[ch]",
    "*.tlb",
    "*.yy.c",
    "*_[cips].c",
    "/autom4te.cache",
    "/config.cache",
    "/config.log",
    "/config.status",
    "/TAGS",
    "/tags",
    "Makefile"
);

my (@makefiles, %makefiles);

# update a file if changed
sub update_file($)
{
    my $file = shift;
    my $ret = system "cmp $file $file.new >/dev/null";
    if (!$ret)
    {
        unlink "$file.new";
    }
    else
    {
        rename "$file.new", "$file";
        print "$file updated\n";
        if ($file eq "configure.ac")
        {
            system "autoconf";
            print "configure updated\n";
        }
    }
    return $ret;
}

# replace some lines in a file between two markers
sub replace_in_file($$$@)
{
    my $file = shift;
    my $start = shift;
    my $end = shift;

    open NEW_FILE, ">$file.new" or die "cannot create $file.new";

    if (defined($start))
    {
        open OLD_FILE, "$file" or die "cannot open $file";
        while (<OLD_FILE>)
        {
            last if /$start/;
            print NEW_FILE $_;
        }
    }

    print NEW_FILE @_;

    if (defined($end))
    {
        my $skip=1;
        while (<OLD_FILE>)
        {
            print NEW_FILE $_ unless $skip;
            $skip = 0 if /$end/;
        }
    }

    close OLD_FILE if defined($start);
    close NEW_FILE;
    return update_file($file);
}

# parse the specified makefile to identify the rules file
sub parse_makefile($)
{
    my $file = shift;
    my %make;

    ($make{"=dir"} = $file) =~ s/[^\/]+$//;

    open MAKE, "$file.in" or die "cannot open $file.in\n";

    while (<MAKE>)
    {
        chomp;
        while (/\\$/) { chop; $_ .= <MAKE>; chomp; }  # merge continued lines

        if (/^\@(MAKE.*RULES)\@/)
        {
            my $var = $1;
            $make{"=rules"} = $makerules{$var};
            next;
        }
        if (/^(MODULE|IMPORTLIB)\s*=\s*(.*)/)
        {
            $make{$1} = $2;
            next;
        }
        if (/^(IDL_H_SRCS|IMPLIB_SRCS|SPEC_SRCS16|MANPAGES|PROGRAMS)\s*=\s*(.*)/)
        {
            my @list = split(/\s+/, $2);
            $make{$1} = \@list;
            next;
        }
        if (/^\#\s*MKDLL_SKIP/ || /^\#\s*MKPROG_SKIP/)
        {
            $make{"=skip"} = 1;
            next;
        }
    }
    return %make;
}

if (-d ".git")
{
    @makefiles = map { s/\.in$//; $_; } split /\s/, `git ls-files -c Makefile.in \\*/Makefile.in`;
}
else
{
    @makefiles = map { s/^\.\/(.*)\.in/$1/; $_; } split(/\s/,`find . -name Makefile.in -print`);
}

foreach my $file (sort values %makerules, @makefiles)
{
    my %make = parse_makefile( $file );
    $makefiles{$file} = \%make;
}

################################################################
# update the makefile list in configure.ac

my @lines = ();

foreach my $var (sort { $makerules{$a} cmp $makerules{$b}; } keys %makerules)
{
    push @lines, "$var=$makerules{$var}\n";
    push @lines, "AC_SUBST_FILE($var)\n\n";
}

replace_in_file( "configure.ac", '^MAKE_RULES', '\]\)$',
                 @lines,
                 "AC_CONFIG_FILES([\n",
                 join ("\n", (sort values %makerules), (sort @makefiles) ), "])\n" );


################################################################
# update the tests list in programs/winetest/Makefile.in and programs/winetest/winetest.rc

sub update_winetest(@)
{
    my (@tests, @lines);

    foreach my $file (@_)
    {
        if ($file =~ /^dlls\/(.*)\/tests\/Makefile/) { push @tests, $1; }
    }
    push @lines, "TESTBINS =";
    push @lines, map { " \\\n\t" . $_ . "_test.exe"; } sort @tests;
    push @lines, "\n\n";

    foreach my $test (sort @tests)
    {
        push @lines, "${test}_test.exe: \$(DLLDIR)/$test/tests/${test}_test.exe\$(DLLEXT)\n";
        push @lines, "\tcp \$(DLLDIR)/$test/tests/${test}_test.exe\$(DLLEXT) \$\@ && \$(STRIP) \$\@\n";
    }
    push @lines, "\n# Special rules\n";

    replace_in_file( "programs/winetest/Makefile.in", '^TESTBINS\s*=', '^# Special rules', @lines );

    replace_in_file( "programs/winetest/winetest.rc", ' TESTRES ', undef,
                     map { $_ . "_test.exe TESTRES \"" . $_ . "_test.exe\"\n"; } sort @tests );

    # return a list of test exe files for .gitignore
    return map { "programs/winetest/" . $_ . "_test.exe"; } sort @tests;
}


################################################################
# update the makefile list in Makefile.in

my @targets;
my @depends;

foreach my $file (sort values %makerules)
{
    push @targets, $file;
    my %make = %{$makefiles{$file}};
    if (!defined($make{"=rules"})) { push @depends, "$file: $file.in"; }
    else { push @depends, "$file: $file.in Make.rules"; }
}

foreach my $file (sort @makefiles)
{
    push @targets, $file unless $file eq "Makefile";
    my $dep = ${$makefiles{$file}}{"=rules"};
    push @depends, "$file: $file.in $dep";
}

@lines = ();
push @lines, "ALL_MAKEFILES = \\\n\t";
push @lines, join (" \\\n\t", @targets ), "\n\n";
push @lines, "Makefile \$(ALL_MAKEFILES): config.status\n";
push @lines, "\t\@./config.status \$\@\n\n";
push @lines, "\$(RECURSE_TARGETS) \$(MAKEDEP): \$(ALL_MAKEFILES)\n\n";
push @lines, "distclean::\n";
push @lines, "\t\$(RM) Makefile \$(ALL_MAKEFILES)\n\n";
push @lines, join ("\n", @depends ), "\n";

replace_in_file( "Makefile.in", '^ALL_MAKEFILES\s*=', undef, @lines );


################################################################
# update dlls/Makefile.in

sub update_dlls(@)
{
    my (%directories, %testdirs, %importlibs, %static_implibs, %staticlib_dirs, %altnames);
    my $text = "";

    my @ignores =
    (
     "dlls/*/tests/testlist.c",
     "dlls/*/tests/*.ok",
    );

    sub needs_symlink($$)
    {
        my ($mod, $dir) = @_;
        $mod =~ s/\.dll$//;
        return $mod ne $dir;
    }

    foreach my $make (@_)
    {
        if ($make =~ /dlls\/(.*)\/tests\/Makefile/)
        {
            $testdirs{$1} = "$1/tests";
            next;
        }
        my %makefile = %{$makefiles{$make}};

        next unless defined $makefile{"MODULE"};
        my $module = $makefile{"MODULE"};
        (my $dir = $make) =~ s/^dlls\/(.*)\/[^\/]+$/$1/;

        if ($module =~ /^lib.*\.a$/)
        {
            $staticlib_dirs{$module} = $dir;
            die "invalid module $module in dir $staticlib_dirs{$module}\n" if "lib$staticlib_dirs{$module}.a" ne $module;
        }
        else
        {
            $directories{$module} = $dir;
        }

        if (defined $makefile{"IMPORTLIB"})
        {
            if ($makefile{"IMPORTLIB"} =~ /^([a-zA-Z0-9_.]+)\.\$\(IMPLIBEXT\)/)
            {
                $importlibs{$module} = $1;
            }
            else
            {
                die "invalid importlib name $makefile{IMPORTLIB} in $make";
            }
        }

        $static_implibs{$module} = 1 if defined $makefile{"IMPLIB_SRCS"};

        if (defined $makefile{"SPEC_SRCS16"})
        {
            my @list = map { $_ =~ s/\.spec$//; $_ .= ".dll" unless $_ =~ /\./; $_; } @{$makefile{"SPEC_SRCS16"}};
            $altnames{$module} = \@list;
        }

        if (defined $makefile{"IDL_H_SRCS"})
        {
            push @ignores, map { $_ =~ s/(.*)\.idl$/dlls\/$dir\/$1.h/; $_; } @{$makefile{"IDL_H_SRCS"}};
        }
    }

    # output special dlls configure definitions

    $text .= "# special configure-dependent targets\n\n";
    my %specials = ();
    foreach my $mod (sort keys %special_dlls)
    {
        $specials{$special_dlls{$mod}} .= " " . $mod;
    }
    foreach my $i (sort keys %specials)
    {
        $text .= $i . " =" . $specials{$i} . "\n";
    }
    $text .= "EXTRADIRS =";
    foreach my $i (sort keys %specials) { $text .= sprintf " \@%s\@", $i; }
    $text .= "\n\n";

    # output the subdirs list

    $text .= "# Subdir list\n\n";
    $text .= "BASEDIRS =";
    foreach my $dir (sort values %directories)
    {
        next if defined($special_dlls{$dir});  # skip special dlls
        $text .= " \\\n\t" . $dir;
    }

    $text .= "\n\nIMPLIBSUBDIRS = \\\n\t";
    $text .=  join " \\\n\t", sort values %staticlib_dirs;

    $text .= "\n\nTESTSUBDIRS = \\\n\t";
    $text .= join " \\\n\t", sort values %testdirs;

    $text .=  "\n\nSUBDIRS = \\\n\t";
    $text .= join " \\\n\t", "\$(BASEDIRS)", "\$(IMPLIBSUBDIRS)", "\$(TESTSUBDIRS)", sort keys %special_dlls;

    $text .= "\n\nBUILDSUBDIRS   = \$(BASEDIRS) \$(EXTRADIRS) \$(TESTSUBDIRS)\n";
    $text .= "INSTALLSUBDIRS = \$(BASEDIRS) \$(EXTRADIRS) \$(IMPLIBSUBDIRS)\n";
    $text .= "DOCSUBDIRS     = \$(BASEDIRS) \$(EXTRADIRS)\n";

    # output the all: target

    my %targets = ();  # use a hash to get rid of duplicate target names
    my %targets16 = ();
    foreach my $mod (sort keys %directories)
    {
        next if defined($special_dlls{$directories{$mod}});  # skip special dlls
        $targets{$mod . ".so"} = 1 if needs_symlink($mod, $directories{$mod});
        next unless defined $altnames{$mod};
        foreach my $i (sort @{$altnames{$mod}})
        {
            $targets16{$i . "16"} = $mod;
        }
    }

    $text .= "\n\@MAKE_RULES\@\n\n";
    $text .= "# Symbolic links\n\n";
    $text .= "WIN16_FILES = \\\n";
    $text .=  "\t" . join( " \\\n\t", sort keys %targets16 ) . "\n\n";
    $text .= "SYMLINKS_SO = \\\n";
    $text .= "\t\@WIN16_FILES\@ \\\n";
    $text .= "\t" . join( " \\\n\t", sort keys %targets ) . "\n\n";
    $text .= "# Main target\n\n";
    $text .= "all: \$(BUILDSUBDIRS) symlinks\$(DLLEXT)\n\n";
    $text .= ".PHONY: symlinks symlinks.so implib\n\n";
    $text .= "symlinks.so: \$(SYMLINKS_SO)\n\n";
    $text .= "symlinks: \$(BUILDSUBDIRS)\n\n";

    # output the lib name -> directory rules

    $text .= "# Map symlink name to the corresponding library\n\n";
    foreach my $mod (sort keys %directories)
    {
        next unless needs_symlink($mod, $directories{$mod});
        $text .= sprintf "%s.so: %s/%s.so\n", $mod, $directories{$mod}, $mod;
        $text .= sprintf "\t\$(RM) \$@ && \$(LN_S) %s/%s.so \$@\n\n", $directories{$mod}, $mod;
    }

    $text .= "# Placeholders for 16-bit libraries\n\n";
    foreach my $mod (sort keys %directories)
    {
        next unless defined $altnames{$mod};
        $text .= sprintf "%s:\n", join(" ", map { $_ . "16"; } sort @{$altnames{$mod}});
        $text .= sprintf "\techo \"%s\" >\$\@\n\n", $mod;
    }

    # output the import libraries rules

    $text .= "# Import libraries\n\n";
    $text .= "STATIC_IMPLIBEXT = \$(IMPLIBEXT:def=def.a)\n\n";

    my @lib_symlinks = ();
    foreach my $mod (sort keys %importlibs)
    {
        my $dir = $directories{$mod};
        my $lib = $importlibs{$mod};
        if ($lib ne "lib" . $dir) { push @lib_symlinks, $mod; }
    }
    $text .= "IMPORT_SYMLINKS =";
    foreach my $mod (sort @lib_symlinks)
    {
        $text .= sprintf " \\\n\t%s.\$(IMPLIBEXT)", $importlibs{$mod};
    }

    $text .= "\n\nIMPORT_LIBS = \\\n\t\$(IMPORT_SYMLINKS)";
    foreach my $mod (sort keys %staticlib_dirs)
    {
        $text .= sprintf " \\\n\t%s/%s", $staticlib_dirs{$mod}, $mod;
    }
    foreach my $mod (sort keys %importlibs)
    {
        my $dir = $directories{$mod};
        my $def = $mod;
        $def =~ s/\.(dll|drv)$//;
        $text .= sprintf " \\\n\t%s/lib%s.\$(IMPLIBEXT)", $dir, $def;
        next unless defined $static_implibs{$mod};
        $text .= sprintf " \\\n\t%s/lib%s.\$(STATIC_IMPLIBEXT)", $dir, $def
    }
    $text .= "\n\n";
    $text .= "implib: \$(IMPORT_LIBS)\n\n";

    foreach my $mod (sort keys %importlibs)
    {
        my $dir = $directories{$mod};
        my $lib = $importlibs{$mod};
        my $spec = $mod;
        $spec =~ s/\.dll$//;
        $text .= sprintf "%s/%s.\$(IMPLIBEXT): %s/%s.spec \$(WINEBUILD)\n", $dir, $lib, $dir, $spec;
        $text .= sprintf "\t\@cd %s && \$(MAKE) %s.\$(IMPLIBEXT)\n\n", $dir, $lib;
        next unless $static_implibs{$mod};
        $text .= sprintf "%s/%s.\$(STATIC_IMPLIBEXT): dummy\n", $dir, $lib, $dir, $spec;
        $text .= sprintf "\t\@cd %s && \$(MAKE) %s.\$(STATIC_IMPLIBEXT)\n\n", $dir, $lib;
    }
    foreach my $mod (sort @lib_symlinks)
    {
        my $dir = $directories{$mod};
        my $lib = $importlibs{$mod} . ".\$(IMPLIBEXT)";
        $text .= sprintf "%s: %s/%s\n", $lib, $dir, $lib;
        $text .= sprintf "\t\$(RM) \$@ && \$(LN_S) %s/%s \$@\n\n", $dir, $lib;
    }

    $text .= "\$(BUILDSUBDIRS): \$(IMPORT_LIBS)\n";
    $text .= "\$(INSTALLSUBDIRS:%=%/__install__) \$(INSTALLSUBDIRS:%=%/__install-lib__): \$(IMPORT_LIBS)\n\n";

    # output the inter-dll dependencies and rules

    $text .= "# Map library name to the corresponding directory\n\n";

    foreach my $mod (sort keys %directories)
    {
        next unless needs_symlink($mod, $directories{$mod});
        $text .= sprintf "%s/%s.so: %s\n", $directories{$mod}, $mod, $directories{$mod};
    }
    foreach my $mod (sort keys %staticlib_dirs)
    {
        $text .= sprintf "%s/%s: %s\n", $staticlib_dirs{$mod}, $mod, $staticlib_dirs{$mod};
    }
    $text .= "\n# Misc rules\n";

    replace_in_file( "dlls/Makefile.in",
                     '^# special configure-dependent targets',
                     '^# Misc rules',
                     $text );

    # .gitignore file

    foreach my $mod (sort @lib_symlinks)
    {
        push @ignores, "dlls/$importlibs{$mod}.def";
    }
    foreach my $mod (sort keys %directories)
    {
        next unless defined $altnames{$mod};
        push @ignores, map { "dlls/" . $_ . "16"; } @{$altnames{$mod}};
    }
    foreach my $mod (sort keys %importlibs)
    {
        my $dir = $directories{$mod};
        my $def = $mod;
        $def =~ s/\.(dll|drv)$//;
        push @ignores, "dlls/$dir/lib$def.def";
    }

    return @ignores;
}


################################################################
# update programs/Makefile.in

sub update_progs(@)
{
    my (@subdirs, @install_subdirs, @install_progs);

    my @ignores = ();

    foreach my $make (@_)
    {
        my %makefile = %{$makefiles{$make}};
        my $module = $makefile{"MODULE"};
        (my $dir = $make) =~ s/^programs\/(.*)\/Makefile$/$1/;
        die "Invalid module $module in $make" unless "$dir.exe" eq $module;
        next if defined $makefile{"=skip"};
        push @subdirs, $dir;
        push @ignores, "programs/$dir/$dir";
        push @install_subdirs, $dir unless $dont_install{$dir};
        push @install_progs, $dir if $bin_install{$dir};
    }

    replace_in_file( "programs/Makefile.in", '^SUBDIRS\s*=', '^INSTALLDIRS',
                     "SUBDIRS = \\\n\t",
                     join( " \\\n\t", @subdirs ),
                     "\n\n# Sub-directories to run make install into\nINSTALLSUBDIRS = \\\n\t",
                     join( " \\\n\t", @install_subdirs ),
                     "\n\n# Programs to install in bin directory\nINSTALLPROGS = \\\n\t",
                     join( " \\\n\t", @install_progs ),
                     "\n\nINSTALLDIRS = \$(DESTDIR)\$(bindir)\n" );

    return @ignores;
}


################################################################
# update the main .gitignore

sub update_gitignore(@)
{
    my @ignores = values %makerules;

    foreach my $make (@makefiles)
    {
        my %makefile = %{$makefiles{$make}};
        my $dir = $makefile{"=dir"};
        if (defined $makefile{"MANPAGES"})
        {
            push @ignores, map { $dir . $_; } @{$makefile{"MANPAGES"}};
        }
        if (defined $makefile{"PROGRAMS"})
        {
            push @ignores, map { s/\$\(EXEEXT\)//; $dir . $_; } @{$makefile{"PROGRAMS"}};
        }
    }

    # prepend a slash to paths that don't have one
    @ignores = map { $_ =~ s/^([^\/]+)$/\/$1/; $_; } @ignores;

    push @ignores, @_;

    replace_in_file( ".gitignore", undef, undef,
                     "# Automatically generated by make_makefiles; DO NOT EDIT!!\n",
                     join("\n", sort @ignores), "\n" );
}


push @ignores, update_winetest( @makefiles );
push @ignores, update_dlls( sort grep /^dlls\//, @makefiles );
push @ignores, update_progs( sort grep /^programs\/.*\/Makefile$/, @makefiles );
update_gitignore( @ignores );