[imager.git] / Makefile.PL

#!perl -w
use ExtUtils::MakeMaker;
use Cwd;
use Config;
use File::Spec;
use Getopt::Long;

#
# IM_INCPATH      colon seperated list of paths to extra include paths
# IM_LIBPATH      colon seperated list of paths to extra library paths
#
# IM_VERBOSE      turns on verbose mode for the library finding and such
# IM_MANUAL       to manually select which libraries are used and which not
# IM_ENABLE       to programmatically select which libraries are used
#                 and which are not
# IM_NOLOG        if true logging will not be compiled into the module
# IM_DEBUG_MALLOC if true malloc debbuging will be compiled into the module
#                 do not use IM_DEBUG_MALLOC in production - this slows
#                 everything down by alot
# IM_CFLAGS       Extra flags to pass to the compiler
# IM_LFLAGS       Extra flags to pass to the linker
# IM_DFLAGS       Extra flags to pass to the preprocessor
# IM_SUPPRESS_PROMPT  Suppress the prompt asking about gif support

my $help;
my @enable;
my @disable;
my @incpaths;
my @libpaths;
my $noprobe;
GetOptions("help" => \$help,
           "enable=s" => \@enable,
           "disable=s" => \@disable,
           "incpath=s", \@incpaths,
           "libpath=s" => \@libpaths,
           "noprobe" => \$noprobe);

if ($help) {
  usage();
}

if (@enable && @disable) {
  print STDERR "Only --enable or --disable can be used, not both, try --help\n";
  exit 1;
}

getenv();     # get environment variables
init();       # initialize global data
pathcheck();  # Check if directories exist

if (exists $ENV{IM_ENABLE}) {
  my %en = map { $_, 1 } split ' ', $ENV{IM_ENABLE};
  for my $key (keys %formats) {
    delete $formats{$key} unless $en{$key};
  }
}
if (@enable) {
  my %en = map { $_ => 1 } map { split /,/ } @enable;
  for my $key (keys %formats) {
    delete $formats{$key} unless $en{$key};
  }
}
elsif (@disable) {
  delete @formats{map { split /,/ } @disable};
}

my @defines;

# Pick what libraries are used
if ($MANUAL) {
  manual();
} else {
  automatic();
}

# Make sure there isn't a clash between the gif libraries.
gifcheck();

my $lib_cflags = '';
my $F_LIBS = '';
my $F_OBJECT = '';
for my $frmkey (keys %formats) {
  my $frm = $formats{$frmkey};
  push @defines, [ $frm->{def}, 1, "$frmkey available" ];
  $F_LIBS   .= ' '  .$frm->{libfiles};
  $F_OBJECT .= ' '  .$frm->{objfiles};
  $lib_cflags   .= ' '  .$frm->{cflags} if $frm->{cflags};
}

$F_INC  = join ' ', map "-I$_", map / / ? qq{"$_"} : $_, 
  grep !exists $definc{$_}, @incs;
$F_LIBS = join(' ',map "-L$_", map / / ? qq{"$_"} : $_, @libs) . $F_LIBS;

$OSLIBS = '';
$OSDEF  = "-DOS_$^O";

if ($^O eq 'hpux')                { $OSLIBS .= ' -ldld'; }
if (defined $Config{'d_dlsymun'}) { $OSDEF  .= ' -DDLSYMUN'; }

@objs = qw(Imager.o draw.o polygon.o image.o io.o iolayer.o
           log.o gaussian.o conv.o pnm.o raw.o feat.o font.o
	   filters.o dynaload.o stackmach.o datatypes.o
	   regmach.o trans2.o quant.o error.o convert.o
	   map.o tags.o palimg.o maskimg.o img16.o rotate.o
           bmp.o tga.o rgb.o color.o fills.o imgdouble.o);

%opts=(
       'NAME'         => 'Imager',
       'VERSION_FROM' => 'Imager.pm',
       'LIBS'         => "$LFLAGS -lm $OSLIBS $F_LIBS",
       'DEFINE'       => "$OSDEF $CFLAGS",
       'INC'          => "$lib_cflags $DFLAGS $F_INC",
       'OBJECT'       => join(' ', @objs, $F_OBJECT),
       clean          => { FILES=>'testout' },
      );

if ($ExtUtils::MakeMaker::VERSION > 6.06) {
  $opts{AUTHOR} = 'Tony Cook <tony@imager.perl.org>, Arnar M. Hrafnkelsson';
  $opts{ABSTRACT} = 'Perl extension for Generating 24 bit Images';
}

make_imconfig(\@defines);

if ($VERBOSE) { print Dumper(\%opts); }
mkdir('testout',0777); # since we cannot include it in the archive.
WriteMakefile(%opts);

exit;


sub MY::postamble {
'
dyntest.$(MYEXTLIB) : dynfilt/Makefile
	cd dynfilt && $(MAKE) $(PASTHRU)

lib/Imager/Regops.pm : regmach.h regops.perl
	$(PERL) regops.perl regmach.h lib/Imager/Regops.pm

imconfig.h: Makefile.PL
	$(ECHO) "imconfig.h out-of-date with respect to $?"
	$(PERLRUN) Makefile.PL
	$(ECHO) "==> Your Makefile has been rebuilt - re-run your make command <=="
';
}

sub MY::metafile {
  my ($self) = @_;

  my $meta = <<YAML;
--- #YAML:1.0
name: Imager
version: $self->{VERSION}
version_from: $self->{VERSION_FROM}
author: $self->{AUTHOR}
abstract: $self->{ABSTRACT}
installdirs: $self->{INSTALLDIRS}
recommends:
  Parse::RecDescent: 0
license: perl
dynamic_config: 1
distribution_type: module
generated_by: Imager version $self->{VERSION}
YAML
  
  my @write;
  if ($self->can('echo')) {
    # use EU::MM's version where possible, hopefully it's portable
    @write = $self->echo($meta, 'META.yml');
  }
  else {
    my @lines = split /\n/, $meta;
    @lines = map qq{"$_"}, @lines;
    push @write, "\${ECHO} ".shift(@lines)." >META.yml";
    push @write, map { "\${ECHO} $_ >>META.yml" } @lines;
  }
  return sprintf "metafile :\n\t%s\n", join "\n\t", @write;
}

# manual configuration of helper libraries

sub manual {
  print <<EOF;

      Please answer the following questions about
      which formats are avaliable on your computer

press <return> to continue
EOF

  <STDIN>; # eat one return

  for my $frm(sort { $formats{$b}{order} <=> $formats{$a}{order} } keys %formats) {
  SWX:
    if ($formats{$frm}{docs}) { print "\n",$formats{$frm}{docs},"\n\n"; }
    print "Enable $frm support: ";
    $gz = <STDIN>;
    chomp($gz);
    if ($gz =~ m/^(y|yes|n|no)/i) {
      $gz=substr(lc($gz),0,1);
      if ($gz eq 'n') {
	delete $formats{$frm};
      }
    } else { goto SWX; }
  }
}


# automatic configuration of helper libraries

sub automatic {
  for $frm(keys %formats) {
    delete $formats{$frm} if !checkformat($frm);	
  }
}


sub gifcheck {
  if ($formats{'gif'} and $formats{'ungif'}) {
    print "ungif and gif can not coexist - removing ungif support\n";
    delete $formats{'ungif'};
  }

 RETR:
  if (($formats{'gif'} or $formats{'ungif'}) && !$ENV{IM_SUPPRESS_PROMPT}) {
    print <<EOFF;

You have libgif or libungif installed.  They are both known to have
bugs.  Imager can crash or display other strange behaviour after
reading or writing gif images.  Some of the gif tests can even fail
since they stress some parts of the buggy code.

libungif 4.1.2 and later is safe.  giflib 4.1.3 needs at least one
patch to have all the bugs fixed, see README for details.

Of course it's possible your operating system distributor has patched
all of these problems and you have nothing to worry about.

Do you want to remove gif support? [Y/n]
EOFF
    my $resp = <STDIN>;
    chomp($resp);
    if ($resp ne "n") {
      delete $formats{'gif'};
      delete $formats{'ungif'};
      return;
    }
  }

  for my $frm (qw(gif ungif)) {
    checkformat($frm) if ($MANUAL and $formats{$frm});
  }

  my @dirs;
  for my $frm (grep $formats{$_}, qw(gif ungif)) {
    push(@dirs, @{$formats{$frm}{incdir}}) if $formats{$frm}{incdir};
  }
  my $minor = 0;
  my $major = 0;
  FILES: for my $dir (@dirs) {
    my $h = "$dir/gif_lib.h";
    open H, "< $h" or next;
    while (<H>) {
      if (/GIF_LIB_VERSION\s+"\s*version\s*(\d+)\.(\d+)/i) {
	$major = $1;
	$minor = $2;
	close H;
	last FILES;
      }
    }
    close H;
  }

  # we need the version in a #ifdefable form

  push @defines, [ IM_GIFMAJOR, $major, "Parsed giflib version" ];
  push @defines, [ IM_GIFMINOR, $minor ];
}


sub gd {
  my($path,$chk)=@_;

#    print "checking path $path\n";
  if ( !opendir(DH,$path) ) {
    warn "Cannot open dir $path: $!\n";
    return;
  }
  my @l=grep { $chk->($_) } readdir(DH);
  #    print @l;
  close(DH);
  return map $path, @l;
}


sub checkformat {
  my $frm=shift;
  
  my $code = $formats{$frm}{'code'};
  if ($code && !$noprobe) {
    return 1 if $code->($formats{$frm}, $frm);
  }

  my $libchk=$formats{$frm}{'libcheck'};
  my $incchk=$formats{$frm}{'inccheck'};

  my @l;
  for my $lp (@libs) {
    push(@l, gd($lp,$libchk));
  }

  my @i;
  for my $ip (@incs) {
    push(@i, $ip) if $incchk->($ip,$frm);
  }

  printf("%10s: includes %s - libraries %s\n",$frm,(@i?'found':'not found'),(@l?'found':'not found'));
  $formats{$frm}{incdir} = \@i;
  $formats{$frm}{libdir} = \@l;
  return scalar(@i && @l);
}


sub pathcheck {
  if ($VERBOSE) {
    print "pathcheck\n";
    print "  Include paths:\n";
    for (@incs) { print $_,"\n"; }
  }
  @incs=grep { -d $_ && -r _ && -x _ or ( print("  $_ doesnt exist or is unaccessible - removed.\n"),0) } @incs;

  if ($VERBOSE) {
    print "\nLibrary paths:\n";
    for (@incs) { print $_,"\n"; }
  }
  @libs=grep { -d $_ && -r _ && -x _ or ( print("  $_ doesnt exist or is unaccessible - removed.\n"),0) } @libs;
  print "\ndone.\n";
}


# Format data initialization

# format definition is:
# defines needed
# default include path
# files needed for include (boolean perl code)
# default lib path
# libs needed
# files needed for link (boolean perl code)
# object files needed for the format


sub init {

  @definc{'/usr/include'}=();
  @incs=(split(/\Q$Config{path_sep}/, $INCPATH),
        map { split /\Q$Config{path_sep}/} @incpaths );
  if ($Config{locincpth}) {
    push @incs, grep -d, split ' ', $Config{locincpth};
  }
  if ($^O =~ /win32/i && $Config{cc} =~ /\bcl\b/i) {
    push(@incs, split /;/, $ENV{INCLUDE}) if exists $ENV{INCLUDE};
  }
  push @incs, grep -d,
      qw(/sw/include 
         /usr/include/freetype2
         /usr/local/include/freetype2
         /usr/local/include/freetype1/freetype
         /usr/include /usr/local/include /usr/include/freetype
         /usr/local/include/freetype);

  @libs= ( split(/\Q$Config{path_sep}/,$LIBPATH),
    map { split /\Q$Config{path_sep}/} @libpaths );
  if ($Config{loclibpth}) {
    push @libs, grep -d, split ' ', $Config{loclibpth};
  }
  push @libs, grep -d, qw(/sw/lib),  split(/ /, $Config{'libpth'});
  if ($^O =~ /win32/i && $Config{cc} =~ /\bcl\b/i) {
    push(@libs, split /;/, $ENV{LIB}) if exists $ENV{LIB};
  }
  if ($^O eq 'cygwin') {
    push(@libs, '/usr/lib/w32api') if -d '/usr/lib/w32api';
    push(@incs, '/usr/include/w32api') if -d '/usr/lib/w32api';
  }

  my $lext=$Config{'so'};   # Get extensions of libraries
  my $aext=$Config{'_a'};

  $formats{'jpeg'}={
		    order=>'21',
		    def=>'HAVE_LIBJPEG',
		    inccheck=>sub { -e catfile($_[0], 'jpeglib.h') },
		    libcheck=>sub { $_[0] eq "libjpeg$aext" or $_ eq "libjpeg.$lext" },
		    libfiles=>'-ljpeg',
		    objfiles=>'jpeg.o',
		    docs=>q{
			    In order to use jpeg with this module you need to have libjpeg
			    installed on your computer}
		   };

  $formats{'tiff'}={
		    order=>'23',
		    def=>'HAVE_LIBTIFF',
		    inccheck=>sub { -e catfile($_[0], 'tiffio.h') },
		    libcheck=>sub { $_[0] eq "libtiff$aext" or $_ eq "libtiff.$lext" },
		    libfiles=>'-ltiff',
		    objfiles=>'tiff.o',
		    docs=>q{
			    In order to use tiff with this module you need to have libtiff
			    installed on your computer}
		   };

  $formats{'png'}={
		   order=>'22',
		   def=>'HAVE_LIBPNG',
		   inccheck=>sub { -e catfile($_[0], 'png.h') },
		   libcheck=>sub { $_[0] eq "libpng$aext" or $_[0] eq "libpng.$lext" },
		   libfiles=>'-lpng -lz',
		   objfiles=>'png.o',
		   docs=>q{
			   Png stands for Portable Network Graphics and is intended as
			   a replacement for gif on the web. It is patent free and
			   is recommended by the w3c, you need libpng to use these formats},
                   code => \&png_probe,
		  };

  $formats{'gif'}={
		   order=>'20',
		   def=>'HAVE_LIBGIF',
		   inccheck=>sub { -e catfile($_[0], 'gif_lib.h') },
		   libcheck=>sub { $_[0] eq "libgif$aext" or $_[0] eq "libgif.$lext" },
		   libfiles=>'-lgif',
		   objfiles=>'gif.o',
		   docs=>q{
			   gif is the de facto standard for webgraphics at the moment,
			   it does have some patent problems. If you have giflib and
			   are not in violation with the unisys patent you should use
			   this instead of the 'ungif' option.  Note that they cannot
			   be in use at the same time}
		  };

  $formats{'ungif'}={
		     order=>'21',
		     def=>'HAVE_LIBGIF',
		     inccheck=>sub { -e catfile($_[0], 'gif_lib.h') },
		     libcheck=>sub { $_[0] eq "libungif$aext" or $_[0] eq "libungif.$lext" },
		     libfiles=>'-lungif',
		     objfiles=>'gif.o',
		     docs=>q{
			     gif is the de facto standard for webgraphics at the moment,
			     it does have some patent problems. If you have libungif and
			     want to create images free from LZW patented compression you
			     should use this option instead of the 'gif' option}
		    };

  $formats{'T1-fonts'}={
			order=>'30',
			def=>'HAVE_LIBT1',
			inccheck=>sub { -e catfile($_[0], 't1lib.h') },
			libcheck=>sub { $_[0] eq "libt1$aext" or $_[0] eq "libt1.$lext" },
			libfiles=>'-lt1',
			objfiles=>'',
			docs=>q{
				postscript t1 fonts are scalable fonts. They can include 
				ligatures and kerning information and generally yield good
				visual quality. We depend on libt1 to rasterize the fonts
				for use in images.}
		       };

  $formats{'TT-fonts'}=
    {
     order=>'31',
     def=>'HAVE_LIBTT',
     inccheck=>sub { -e catfile($_[0], 'freetype.h')
                       && !-e catfile($_[0], 'fterrors.h') },
     libcheck=>sub { $_[0] eq "libttf$aext" or $_[0] eq "libttf.$lext" },
     libfiles=>'-lttf',
     objfiles=>'',
     docs=>q{
Truetype fonts are scalable fonts. They can include 
kerning and hinting information and generally yield good
visual quality esp on low resultions. The freetype library is
used to rasterize for us. The only drawback is that there
are alot of badly designed fonts out there.}
		       };
  $formats{'w32'} = {
		     order=>40,
		     def=>'HAVE_WIN32',
		     inccheck=>sub { -e catfile($_[0], 'windows.h') },
		     libcheck=>sub { lc $_[0] eq 'gdi32.lib' 
				       || lc $_[0] eq 'libgdi32.a' },
		     libfiles=>$^O eq 'cygwin' ? '-lgdi32' : '',
		     objfiles=>'win32.o',
		     docs => <<DOCS
Uses the Win32 GDI for rendering text.

This currently only works on under normal Win32 and cygwin.
DOCS
		    };
  $formats{'freetype2'} = {
                           order=>'29',
                           def=>'HAVE_FT2',
                           inccheck=>sub { -e catfile($_[0], 'ft2build.h') },
                           libcheck=>sub { $_[0] eq "libfreetype$aext" or $_[0] eq "libfreetype.$lext" },
                           libfiles=>'-lfreetype',
                           objfiles=>'freetyp2.o',
                           docs=><<DOCS,
Freetype 2 supports both Truetype and Type 1 fonts, both of which are
scalable.  It also supports a variety of other fonts.
DOCS
                           code => \&freetype2_probe,
                          };
  # Make fix indent
  for (keys %formats) { $formats{$_}->{docs} =~ s/^\s+/  /mg; }
}


sub gen {
  my $V = $ENV{$_[0]};
  defined($V) ? $V : "";
}


# Get information from environment variables

sub getenv {

  ($VERBOSE,
   $INCPATH,
   $LIBPATH,
   $NOLOG,
   $DEBUG_MALLOC,
   $MANUAL,
   $CFLAGS,
   $LFLAGS,
   $DFLAGS) = map { gen $_ } qw(IM_VERBOSE
				IM_INCPATH
				IM_LIBPATH
				IM_NOLOG
				IM_DEBUG_MALLOC
				IM_MANUAL
				IM_CFLAGS
				IM_LFLAGS
				IM_DFLAGS);

  if ($VERBOSE) { print "Verbose mode\n"; require Data::Dumper; import Data::Dumper qw(Dumper);}

  if ($NOLOG)   { print "Logging not compiled into module\n"; }
  else { 
    push @defines, [ IMAGER_LOG => 1, "Logging system" ];
  }

  if ($DEBUG_MALLOC) {
    push @defines, [ IMAGER_DEBUG_MALLOC => 1, "Use Imager's DEBUG malloc()" ];
    print "Malloc debugging enabled\n";
  }

}

sub make_imconfig {
  my ($defines) = @_;

  open CONFIG, "> imconfig.h"
    or die "Cannot create imconfig.h: $!\n";
  print CONFIG <<EOS;
/* This file is automatically generated by Makefile.PL.
   Don't edit this file, since any changes will be lost */

#ifndef IMAGER_IMCONFIG_H
#define IMAGER_IMCONFIG_H
EOS
  for my $define (@$defines) {
    if ($define->[2]) {
      print CONFIG "\n/*\n  $define->[2]\n*/\n\n";
    }
    print CONFIG "#define $define->[0] $define->[1]\n";
  }
  print CONFIG "\n#endif\n";
  close CONFIG;
}

# probes for freetype2 by trying to run freetype-config
sub freetype2_probe {
  my ($frm, $frmkey) = @_;

  is_exe('freetype-config') or return;

  my $cflags = `freetype-config --cflags`
    and !$? or return;
  chomp $cflags;
  
  $frm->{cflags} = $cflags;
  my $lflags = `freetype-config --libs`
    and !$? or return;
  chomp $lflags;
  $frm->{libfiles} = $lflags;

  printf "%10s: configured via freetype-config\n", $frmkey;

  return 1;
}

# probes for libpng via pkg-config
sub png_probe {
  my ($frm, $frmkey) = @_;

  is_exe('pkg-config') or return;

  my $cflags;
  my $config;
  for my $check_conf (qw(libpng libpng12 libpng10)) {
    $cflags = `pkg-config $check_conf --cflags`;
    if ($cflags && !$?) {
      $config = $check_conf;
      last;
    }
  }
  $config or return;

  my $lflags = `pkg-config $config --libs`
    and !$? or return;

  chomp $cflags;
  chomp $lflags;
  $frm->{cflags} = $cflags;
  $frm->{libfiles} = $lflags;

  printf "%10s: configured via `pkg-config $config ...`\n", $frmkey;

  return 1;
}

sub catfile {
  return File::Spec->catfile(@_);
}

sub is_exe {
  my ($name) = @_;

  for my $dir (File::Spec->path) {
    -x catfile($dir, "$name$Config{_exe}")
      and return 1;
  }

  return;
}

sub usage {
  print STDERR <<EOS;
Usage: $0 [--enable feature1,feature2,...] [--incpath ...] [--libpath ...]
       $0 [--disable feature1,feature2,...] [--incpath ...] [--libpath ...]
       $0 --help
Possible feature names are:
  png gif ungif jpeg tiff T1-fonts TT-fonts freetype2
EOS
  exit 1;

}
Commit	Line	Data
ea9e6c3f	1	#!perl -w
02d1d628 AMH	2	use ExtUtils::MakeMaker;
	3	use Cwd;
	4	use Config;
07ea6c21	5	use File::Spec;
37959076	6	use Getopt::Long;
02d1d628	7
02d1d628 AMH	8	#
	9	# IM_INCPATH colon seperated list of paths to extra include paths
	10	# IM_LIBPATH colon seperated list of paths to extra library paths
	11	#
	12	# IM_VERBOSE turns on verbose mode for the library finding and such
	13	# IM_MANUAL to manually select which libraries are used and which not
	14	# IM_ENABLE to programmatically select which libraries are used
	15	# and which are not
	16	# IM_NOLOG if true logging will not be compiled into the module
	17	# IM_DEBUG_MALLOC if true malloc debbuging will be compiled into the module
	18	# do not use IM_DEBUG_MALLOC in production - this slows
	19	# everything down by alot
	20	# IM_CFLAGS Extra flags to pass to the compiler
	21	# IM_LFLAGS Extra flags to pass to the linker
	22	# IM_DFLAGS Extra flags to pass to the preprocessor
f4dbac50	23	# IM_SUPPRESS_PROMPT Suppress the prompt asking about gif support
02d1d628	24
37959076 TC	25	my $help;
	26	my @enable;
	27	my @disable;
	28	my @incpaths;
	29	my @libpaths;
	30	my $noprobe;
	31	GetOptions("help" => \$help,
	32	"enable=s" => \@enable,
	33	"disable=s" => \@disable,
	34	"incpath=s", \@incpaths,
	35	"libpath=s" => \@libpaths,
	36	"noprobe" => \$noprobe);
	37
	38	if ($help) {
	39	usage();
	40	}
	41
	42	if (@enable && @disable) {
	43	print STDERR "Only --enable or --disable can be used, not both, try --help\n";
	44	exit 1;
	45	}
02d1d628 AMH	46
	47	getenv(); # get environment variables
	48	init(); # initialize global data
	49	pathcheck(); # Check if directories exist
	50
37959076 TC	51	if (exists $ENV{IM_ENABLE}) {
	52	my %en = map { $_, 1 } split ' ', $ENV{IM_ENABLE};
	53	for my $key (keys %formats) {
	54	delete $formats{$key} unless $en{$key};
	55	}
	56	}
	57	if (@enable) {
	58	my %en = map { $_ => 1 } map { split /,/ } @enable;
	59	for my $key (keys %formats) {
	60	delete $formats{$key} unless $en{$key};
	61	}
	62	}
	63	elsif (@disable) {
	64	delete @formats{map { split /,/ } @disable};
	65	}
	66
e11d297f TC	67	my @defines;
e11d297f TC	68
02d1d628 AMH	69	# Pick what libraries are used
	70	if ($MANUAL) {
	71	manual();
	72	} else {
	73	automatic();
02d1d628 AMH	74	}
	75
	76	# Make sure there isn't a clash between the gif libraries.
	77	gifcheck();
	78
07ea6c21	79	my $lib_cflags = '';
80c15fc7 TC	80	my $F_LIBS = '';
80c15fc7 TC	81	my $F_OBJECT = '';
e11d297f TC	82	for my $frmkey (keys %formats) {
	83	my $frm = $formats{$frmkey};
	84	push @defines, [ $frm->{def}, 1, "$frmkey available" ];
02d1d628 AMH	85	$F_LIBS .= ' ' .$frm->{libfiles};
02d1d628 AMH	86	$F_OBJECT .= ' ' .$frm->{objfiles};
07ea6c21	87	$lib_cflags .= ' ' .$frm->{cflags} if $frm->{cflags};
02d1d628 AMH	88	}
02d1d628 AMH	89
ea9e6c3f TC	90	$F_INC = join ' ', map "-I$_", map / / ? qq{"$_"} : $_,
	91	grep !exists $definc{$_}, @incs;
	92	$F_LIBS = join(' ',map "-L$_", map / / ? qq{"$_"} : $_, @libs) . $F_LIBS;
02d1d628 AMH	93
	94	$OSLIBS = '';
	95	$OSDEF = "-DOS_$^O";
	96
	97	if ($^O eq 'hpux') { $OSLIBS .= ' -ldld'; }
	98	if (defined $Config{'d_dlsymun'}) { $OSDEF .= ' -DDLSYMUN'; }
	99
9982a307 AMH	100	@objs = qw(Imager.o draw.o polygon.o image.o io.o iolayer.o
9982a307 AMH	101	log.o gaussian.o conv.o pnm.o raw.o feat.o font.o
02d1d628	102	filters.o dynaload.o stackmach.o datatypes.o
2df3535a	103	regmach.o trans2.o quant.o error.o convert.o
261f91c5	104	map.o tags.o palimg.o maskimg.o img16.o rotate.o
737a830c	105	bmp.o tga.o rgb.o color.o fills.o imgdouble.o);
02d1d628 AMH	106
	107	%opts=(
	108	'NAME' => 'Imager',
	109	'VERSION_FROM' => 'Imager.pm',
	110	'LIBS' => "$LFLAGS -lm $OSLIBS $F_LIBS",
e11d297f	111	'DEFINE' => "$OSDEF $CFLAGS",
07ea6c21	112	'INC' => "$lib_cflags $DFLAGS $F_INC",
de2b8bae TC	113	'OBJECT' => join(' ', @objs, $F_OBJECT),
de2b8bae TC	114	clean => { FILES=>'testout' },
02d1d628 AMH	115	);
02d1d628 AMH	116
29316bdb TC	117	if ($ExtUtils::MakeMaker::VERSION > 6.06) {
29316bdb TC	118	$opts{AUTHOR} = 'Tony Cook <tony@imager.perl.org>, Arnar M. Hrafnkelsson';
ca508100 TC	119	$opts{ABSTRACT} = 'Perl extension for Generating 24 bit Images';
	120	}
	121
e11d297f TC	122	make_imconfig(\@defines);
e11d297f TC	123
02d1d628 AMH	124	if ($VERBOSE) { print Dumper(\%opts); }
	125	mkdir('testout',0777); # since we cannot include it in the archive.
	126	WriteMakefile(%opts);
4dce694d	127
02d1d628 AMH	128	exit;
	129
	130
	131	sub MY::postamble {
	132	'
faa9b3e7	133	dyntest.$(MYEXTLIB) : dynfilt/Makefile
02d1d628 AMH	134	cd dynfilt && $(MAKE) $(PASTHRU)
	135
	136	lib/Imager/Regops.pm : regmach.h regops.perl
	137	$(PERL) regops.perl regmach.h lib/Imager/Regops.pm
e11d297f TC	138
	139	imconfig.h: Makefile.PL
	140	$(ECHO) "imconfig.h out-of-date with respect to $?"
	141	$(PERLRUN) Makefile.PL
	142	$(ECHO) "==> Your Makefile has been rebuilt - re-run your make command <=="
02d1d628 AMH	143	';
	144	}
	145
55932d2a TC	146	sub MY::metafile {
	147	my ($self) = @_;
	148
	149	my $meta = <<YAML;
	150	--- #YAML:1.0
	151	name: Imager
	152	version: $self->{VERSION}
	153	version_from: $self->{VERSION_FROM}
	154	author: $self->{AUTHOR}
	155	abstract: $self->{ABSTRACT}
	156	installdirs: $self->{INSTALLDIRS}
	157	recommends:
	158	Parse::RecDescent: 0
	159	license: perl
	160	dynamic_config: 1
	161	distribution_type: module
	162	generated_by: Imager version $self->{VERSION}
	163	YAML
	164
	165	my @write;
	166	if ($self->can('echo')) {
	167	# use EU::MM's version where possible, hopefully it's portable
	168	@write = $self->echo($meta, 'META.yml');
	169	}
	170	else {
	171	my @lines = split /\n/, $meta;
	172	@lines = map qq{"$_"}, @lines;
	173	push @write, "\${ECHO} ".shift(@lines)." >META.yml";
	174	push @write, map { "\${ECHO} $_ >>META.yml" } @lines;
	175	}
	176	return sprintf "metafile :\n\t%s\n", join "\n\t", @write;
	177	}
	178
02d1d628 AMH	179	# manual configuration of helper libraries
	180
	181	sub manual {
	182	print <<EOF;
	183
	184	Please answer the following questions about
	185	which formats are avaliable on your computer
	186
	187	press <return> to continue
	188	EOF
	189
	190	<STDIN>; # eat one return
	191
2646b26c	192	for my $frm(sort { $formats{$b}{order} <=> $formats{$a}{order} } keys %formats) {
02d1d628 AMH	193	SWX:
	194	if ($formats{$frm}{docs}) { print "\n",$formats{$frm}{docs},"\n\n"; }
	195	print "Enable $frm support: ";
09fd3468	196	$gz = <STDIN>;
02d1d628 AMH	197	chomp($gz);
	198	if ($gz =~ m/^(y\|yes\|n\|no)/i) {
	199	$gz=substr(lc($gz),0,1);
	200	if ($gz eq 'n') {
	201	delete $formats{$frm};
	202	}
	203	} else { goto SWX; }
	204	}
	205	}
	206
	207
	208	# automatic configuration of helper libraries
	209
	210	sub automatic {
	211	for $frm(keys %formats) {
	212	delete $formats{$frm} if !checkformat($frm);
	213	}
	214	}
	215
	216
	217	sub gifcheck {
5f5fe73e	218	if ($formats{'gif'} and $formats{'ungif'}) {
02d1d628 AMH	219	print "ungif and gif can not coexist - removing ungif support\n";
	220	delete $formats{'ungif'};
	221	}
5f5fe73e AMH	222
5f5fe73e AMH	223	RETR:
f4dbac50	224	if (($formats{'gif'} or $formats{'ungif'}) && !$ENV{IM_SUPPRESS_PROMPT}) {
5f5fe73e AMH	225	print <<EOFF;
	226
	227	You have libgif or libungif installed. They are both known to have
	228	bugs. Imager can crash or display other strange behaviour after
	229	reading or writing gif images. Some of the gif tests can even fail
	230	since they stress some parts of the buggy code.
	231
f1967c11 TC	232	libungif 4.1.2 and later is safe. giflib 4.1.3 needs at least one
	233	patch to have all the bugs fixed, see README for details.
	234
	235	Of course it's possible your operating system distributor has patched
	236	all of these problems and you have nothing to worry about.
0b836ff8	237
5f5fe73e AMH	238	Do you want to remove gif support? [Y/n]
	239	EOFF
	240	my $resp = <STDIN>;
	241	chomp($resp);
	242	if ($resp ne "n") {
	243	delete $formats{'gif'};
	244	delete $formats{'ungif'};
09fd3468	245	return;
5f5fe73e AMH	246	}
5f5fe73e AMH	247	}
09fd3468 AMH	248
	249	for my $frm (qw(gif ungif)) {
	250	checkformat($frm) if ($MANUAL and $formats{$frm});
	251	}
	252
02d1d628 AMH	253	my @dirs;
	254	for my $frm (grep $formats{$_}, qw(gif ungif)) {
	255	push(@dirs, @{$formats{$frm}{incdir}}) if $formats{$frm}{incdir};
	256	}
	257	my $minor = 0;
	258	my $major = 0;
	259	FILES: for my $dir (@dirs) {
	260	my $h = "$dir/gif_lib.h";
	261	open H, "< $h" or next;
	262	while (<H>) {
	263	if (/GIF_LIB_VERSION\s+"\sversion\s(\d+)\.(\d+)/i) {
	264	$major = $1;
	265	$minor = $2;
	266	close H;
	267	last FILES;
	268	}
	269	}
	270	close H;
	271	}
	272
	273	# we need the version in a #ifdefable form
4dce694d	274
e11d297f TC	275	push @defines, [ IM_GIFMAJOR, $major, "Parsed giflib version" ];
e11d297f TC	276	push @defines, [ IM_GIFMINOR, $minor ];
02d1d628 AMH	277	}
	278
	279
	280	sub gd {
	281	my($path,$chk)=@_;
	282
	283	# print "checking path $path\n";
	284	if ( !opendir(DH,$path) ) {
	285	warn "Cannot open dir $path: $!\n";
	286	return;
	287	}
	288	my @l=grep { $chk->($_) } readdir(DH);
	289	# print @l;
	290	close(DH);
	291	return map $path, @l;
	292	}
	293
	294
	295	sub checkformat {
	296	my $frm=shift;
37959076	297
07ea6c21	298	my $code = $formats{$frm}{'code'};
37959076	299	if ($code && !$noprobe) {
07ea6c21 TC	300	return 1 if $code->($formats{$frm}, $frm);
	301	}
	302
02d1d628 AMH	303	my $libchk=$formats{$frm}{'libcheck'};
	304	my $incchk=$formats{$frm}{'inccheck'};
	305
	306	my @l;
	307	for my $lp (@libs) {
	308	push(@l, gd($lp,$libchk));
	309	}
	310
	311	my @i;
	312	for my $ip (@incs) {
f8e9bc07	313	push(@i, $ip) if $incchk->($ip,$frm);
02d1d628 AMH	314	}
	315
	316	printf("%10s: includes %s - libraries %s\n",$frm,(@i?'found':'not found'),(@l?'found':'not found'));
	317	$formats{$frm}{incdir} = \@i;
	318	$formats{$frm}{libdir} = \@l;
	319	return scalar(@i && @l);
	320	}
	321
	322
02d1d628 AMH	323	sub pathcheck {
	324	if ($VERBOSE) {
	325	print "pathcheck\n";
	326	print " Include paths:\n";
	327	for (@incs) { print $_,"\n"; }
	328	}
3a6bb91b	329	@incs=grep { -d $_ && -r _ && -x _ or ( print(" $_ doesnt exist or is unaccessible - removed.\n"),0) } @incs;
02d1d628 AMH	330
	331	if ($VERBOSE) {
	332	print "\nLibrary paths:\n";
	333	for (@incs) { print $_,"\n"; }
	334	}
3a6bb91b	335	@libs=grep { -d $_ && -r _ && -x _ or ( print(" $_ doesnt exist or is unaccessible - removed.\n"),0) } @libs;
02d1d628 AMH	336	print "\ndone.\n";
	337	}
	338
	339
	340	# Format data initialization
	341
	342	# format definition is:
	343	# defines needed
	344	# default include path
	345	# files needed for include (boolean perl code)
	346	# default lib path
	347	# libs needed
	348	# files needed for link (boolean perl code)
	349	# object files needed for the format
	350
	351
	352	sub init {
	353
	354	@definc{'/usr/include'}=();
37959076 TC	355	@incs=(split(/\Q$Config{path_sep}/, $INCPATH),
37959076 TC	356	map { split /\Q$Config{path_sep}/} @incpaths );
2646b26c	357	if ($Config{locincpth}) {
6552acfe	358	push @incs, grep -d, split ' ', $Config{locincpth};
2646b26c	359	}
88a763e2 TC	360	if ($^O =~ /win32/i && $Config{cc} =~ /\bcl\b/i) {
88a763e2 TC	361	push(@incs, split /;/, $ENV{INCLUDE}) if exists $ENV{INCLUDE};
2646b26c	362	}
6552acfe	363	push @incs, grep -d,
2646b26c TC	364	qw(/sw/include
	365	/usr/include/freetype2
	366	/usr/local/include/freetype2
	367	/usr/local/include/freetype1/freetype
37959076	368	/usr/include /usr/local/include /usr/include/freetype
2646b26c TC	369	/usr/local/include/freetype);
2646b26c TC	370
37959076 TC	371	@libs= ( split(/\Q$Config{path_sep}/,$LIBPATH),
37959076 TC	372	map { split /\Q$Config{path_sep}/} @libpaths );
2646b26c	373	if ($Config{loclibpth}) {
6552acfe	374	push @libs, grep -d, split ' ', $Config{loclibpth};
2646b26c	375	}
6552acfe	376	push @libs, grep -d, qw(/sw/lib), split(/ /, $Config{'libpth'});
2646b26c	377	if ($^O =~ /win32/i && $Config{cc} =~ /\bcl\b/i) {
88a763e2 TC	378	push(@libs, split /;/, $ENV{LIB}) if exists $ENV{LIB};
88a763e2 TC	379	}
faa9b3e7 TC	380	if ($^O eq 'cygwin') {
	381	push(@libs, '/usr/lib/w32api') if -d '/usr/lib/w32api';
	382	push(@incs, '/usr/include/w32api') if -d '/usr/lib/w32api';
	383	}
02d1d628	384
2646b26c TC	385	my $lext=$Config{'so'}; # Get extensions of libraries
	386	my $aext=$Config{'_a'};
	387
02d1d628 AMH	388	$formats{'jpeg'}={
	389	order=>'21',
	390	def=>'HAVE_LIBJPEG',
f8e9bc07	391	inccheck=>sub { -e catfile($_[0], 'jpeglib.h') },
50ee6f9c	392	libcheck=>sub { $_[0] eq "libjpeg$aext" or $_ eq "libjpeg.$lext" },
02d1d628 AMH	393	libfiles=>'-ljpeg',
	394	objfiles=>'jpeg.o',
	395	docs=>q{
	396	In order to use jpeg with this module you need to have libjpeg
	397	installed on your computer}
	398	};
	399
	400	$formats{'tiff'}={
	401	order=>'23',
	402	def=>'HAVE_LIBTIFF',
f8e9bc07	403	inccheck=>sub { -e catfile($_[0], 'tiffio.h') },
76c8a0a4	404	libcheck=>sub { $_[0] eq "libtiff$aext" or $_ eq "libtiff.$lext" },
02d1d628 AMH	405	libfiles=>'-ltiff',
	406	objfiles=>'tiff.o',
	407	docs=>q{
	408	In order to use tiff with this module you need to have libtiff
	409	installed on your computer}
	410	};
	411
	412	$formats{'png'}={
	413	order=>'22',
	414	def=>'HAVE_LIBPNG',
f8e9bc07	415	inccheck=>sub { -e catfile($_[0], 'png.h') },
88a763e2	416	libcheck=>sub { $_[0] eq "libpng$aext" or $_[0] eq "libpng.$lext" },
02d1d628 AMH	417	libfiles=>'-lpng -lz',
	418	objfiles=>'png.o',
	419	docs=>q{
	420	Png stands for Portable Network Graphics and is intended as
	421	a replacement for gif on the web. It is patent free and
07ea6c21 TC	422	is recommended by the w3c, you need libpng to use these formats},
07ea6c21 TC	423	code => \&png_probe,
02d1d628 AMH	424	};
	425
	426	$formats{'gif'}={
	427	order=>'20',
	428	def=>'HAVE_LIBGIF',
f8e9bc07	429	inccheck=>sub { -e catfile($_[0], 'gif_lib.h') },
e02451e0	430	libcheck=>sub { $_[0] eq "libgif$aext" or $_[0] eq "libgif.$lext" },
02d1d628 AMH	431	libfiles=>'-lgif',
	432	objfiles=>'gif.o',
	433	docs=>q{
	434	gif is the de facto standard for webgraphics at the moment,
	435	it does have some patent problems. If you have giflib and
	436	are not in violation with the unisys patent you should use
	437	this instead of the 'ungif' option. Note that they cannot
	438	be in use at the same time}
	439	};
	440
	441	$formats{'ungif'}={
	442	order=>'21',
	443	def=>'HAVE_LIBGIF',
f8e9bc07	444	inccheck=>sub { -e catfile($_[0], 'gif_lib.h') },
e02451e0	445	libcheck=>sub { $_[0] eq "libungif$aext" or $_[0] eq "libungif.$lext" },
02d1d628 AMH	446	libfiles=>'-lungif',
	447	objfiles=>'gif.o',
	448	docs=>q{
	449	gif is the de facto standard for webgraphics at the moment,
	450	it does have some patent problems. If you have libungif and
	451	want to create images free from LZW patented compression you
	452	should use this option instead of the 'gif' option}
	453	};
	454
	455	$formats{'T1-fonts'}={
	456	order=>'30',
	457	def=>'HAVE_LIBT1',
f8e9bc07	458	inccheck=>sub { -e catfile($_[0], 't1lib.h') },
faa9b3e7	459	libcheck=>sub { $_[0] eq "libt1$aext" or $_[0] eq "libt1.$lext" },
02d1d628 AMH	460	libfiles=>'-lt1',
	461	objfiles=>'',
	462	docs=>q{
	463	postscript t1 fonts are scalable fonts. They can include
	464	ligatures and kerning information and generally yield good
	465	visual quality. We depend on libt1 to rasterize the fonts
	466	for use in images.}
	467	};
	468
f8e9bc07 TC	469	$formats{'TT-fonts'}=
	470	{
	471	order=>'31',
	472	def=>'HAVE_LIBTT',
	473	inccheck=>sub { -e catfile($_[0], 'freetype.h')
	474	&& !-e catfile($_[0], 'fterrors.h') },
	475	libcheck=>sub { $_[0] eq "libttf$aext" or $_[0] eq "libttf.$lext" },
	476	libfiles=>'-lttf',
	477	objfiles=>'',
	478	docs=>q{
	479	Truetype fonts are scalable fonts. They can include
	480	kerning and hinting information and generally yield good
	481	visual quality esp on low resultions. The freetype library is
	482	used to rasterize for us. The only drawback is that there
	483	are alot of badly designed fonts out there.}
02d1d628	484	};
faa9b3e7 TC	485	$formats{'w32'} = {
	486	order=>40,
	487	def=>'HAVE_WIN32',
f8e9bc07	488	inccheck=>sub { -e catfile($_[0], 'windows.h') },
faa9b3e7 TC	489	libcheck=>sub { lc $_[0] eq 'gdi32.lib'
	490	\|\| lc $_[0] eq 'libgdi32.a' },
	491	libfiles=>$^O eq 'cygwin' ? '-lgdi32' : '',
	492	objfiles=>'win32.o',
	493	docs => <<DOCS
	494	Uses the Win32 GDI for rendering text.
	495
	496	This currently only works on under normal Win32 and cygwin.
	497	DOCS
	498	};
	499	$formats{'freetype2'} = {
	500	order=>'29',
	501	def=>'HAVE_FT2',
f8e9bc07	502	inccheck=>sub { -e catfile($_[0], 'ft2build.h') },
faa9b3e7 TC	503	libcheck=>sub { $_[0] eq "libfreetype$aext" or $_[0] eq "libfreetype.$lext" },
	504	libfiles=>'-lfreetype',
	505	objfiles=>'freetyp2.o',
07ea6c21	506	docs=><<DOCS,
faa9b3e7	507	Freetype 2 supports both Truetype and Type 1 fonts, both of which are
f8e9bc07	508	scalable. It also supports a variety of other fonts.
faa9b3e7	509	DOCS
07ea6c21	510	code => \&freetype2_probe,
faa9b3e7	511	};
02d1d628 AMH	512	# Make fix indent
	513	for (keys %formats) { $formats{$_}->{docs} =~ s/^\s+/ /mg; }
	514	}
	515
	516
	517
	518	sub gen {
	519	my $V = $ENV{$_[0]};
	520	defined($V) ? $V : "";
	521	}
	522
	523
	524	# Get information from environment variables
	525
	526	sub getenv {
	527
	528	($VERBOSE,
	529	$INCPATH,
	530	$LIBPATH,
	531	$NOLOG,
	532	$DEBUG_MALLOC,
	533	$MANUAL,
	534	$CFLAGS,
	535	$LFLAGS,
	536	$DFLAGS) = map { gen $_ } qw(IM_VERBOSE
	537	IM_INCPATH
	538	IM_LIBPATH
	539	IM_NOLOG
	540	IM_DEBUG_MALLOC
	541	IM_MANUAL
	542	IM_CFLAGS
	543	IM_LFLAGS
	544	IM_DFLAGS);
	545
	546	if ($VERBOSE) { print "Verbose mode\n"; require Data::Dumper; import Data::Dumper qw(Dumper);}
	547
	548	if ($NOLOG) { print "Logging not compiled into module\n"; }
e11d297f TC	549	else {
	550	push @defines, [ IMAGER_LOG => 1, "Logging system" ];
	551	}
02d1d628 AMH	552
02d1d628 AMH	553	if ($DEBUG_MALLOC) {
e11d297f	554	push @defines, [ IMAGER_DEBUG_MALLOC => 1, "Use Imager's DEBUG malloc()" ];
02d1d628 AMH	555	print "Malloc debugging enabled\n";
	556	}
	557
	558	}
07ea6c21	559
e11d297f TC	560	sub make_imconfig {
	561	my ($defines) = @_;
	562
	563	open CONFIG, "> imconfig.h"
	564	or die "Cannot create imconfig.h: $!\n";
	565	print CONFIG <<EOS;
	566	/* This file is automatically generated by Makefile.PL.
	567	Don't edit this file, since any changes will be lost */
	568
	569	#ifndef IMAGER_IMCONFIG_H
	570	#define IMAGER_IMCONFIG_H
	571	EOS
	572	for my $define (@$defines) {
	573	if ($define->[2]) {
	574	print CONFIG "\n/\n $define->[2]\n/\n\n";
	575	}
	576	print CONFIG "#define $define->[0] $define->[1]\n";
	577	}
	578	print CONFIG "\n#endif\n";
	579	close CONFIG;
	580	}
	581
07ea6c21 TC	582	# probes for freetype2 by trying to run freetype-config
	583	sub freetype2_probe {
	584	my ($frm, $frmkey) = @_;
	585
	586	is_exe('freetype-config') or return;
	587
	588	my $cflags = `freetype-config --cflags`
	589	and !$? or return;
	590	chomp $cflags;
	591
	592	$frm->{cflags} = $cflags;
	593	my $lflags = `freetype-config --libs`
	594	and !$? or return;
	595	chomp $lflags;
	596	$frm->{libfiles} = $lflags;
	597
	598	printf "%10s: configured via freetype-config\n", $frmkey;
	599
	600	return 1;
	601	}
	602
	603	# probes for libpng via pkg-config
	604	sub png_probe {
	605	my ($frm, $frmkey) = @_;
	606
	607	is_exe('pkg-config') or return;
	608
	609	my $cflags;
	610	my $config;
	611	for my $check_conf (qw(libpng libpng12 libpng10)) {
	612	$cflags = `pkg-config $check_conf --cflags`;
	613	if ($cflags && !$?) {
	614	$config = $check_conf;
	615	last;
	616	}
	617	}
	618	$config or return;
	619
	620	my $lflags = `pkg-config $config --libs`
	621	and !$? or return;
	622
	623	chomp $cflags;
	624	chomp $lflags;
	625	$frm->{cflags} = $cflags;
	626	$frm->{libfiles} = $lflags;
	627
	628	printf "%10s: configured via `pkg-config $config ...`\n", $frmkey;
	629
	630	return 1;
	631	}
	632
	633	sub catfile {
	634	return File::Spec->catfile(@_);
	635	}
	636
	637	sub is_exe {
	638	my ($name) = @_;
	639
	640	for my $dir (File::Spec->path) {
	641	-x catfile($dir, "$name$Config{_exe}")
	642	and return 1;
	643	}
	644
	645	return;
646	}
37959076 TC	647
	648	sub usage {
	649	print STDERR <<EOS;
	650	Usage: $0 [--enable feature1,feature2,...] [--incpath ...] [--libpath ...]
	651	$0 [--disable feature1,feature2,...] [--incpath ...] [--libpath ...]
	652	$0 --help
	653	Possible feature names are:
	654	png gif ungif jpeg tiff T1-fonts TT-fonts freetype2
	655	EOS
	656	exit 1;
	657
	658	}