use ExtUtils::MakeMaker;
use Cwd;
use Config;
$lext=$Config{'so'}; # Get extensions of libraries
$aext=$Config{'_a'};
#
# 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
getenv(); # get environment variables
init(); # initialize global data
pathcheck(); # Check if directories exist
# Pick what libraries are used
if ($MANUAL) {
manual();
} else {
automatic();
if (exists $ENV{IM_ENABLE}) {
my %en = map { $_, 1 } split ' ', $ENV{IM_ENABLE};
for my $key (keys %formats) {
delete $formats{$key} unless $en{$key};
}
}
}
# Make sure there isn't a clash between the gif libraries.
gifcheck();
for $frm(values %formats) {
$F_DEFINE .= ' -D'.$frm->{def};
$F_LIBS .= ' ' .$frm->{libfiles};
$F_OBJECT .= ' ' .$frm->{objfiles};
}
$F_INC = join(" ",map { (exists $definc{$_})?'':'-I'.$_ } @incs);
$F_LIBS = join(" ",map { '-L'.$_ } @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 $F_LIBS",
'DEFINE' => "$F_DEFINE $EXTDEF $OSDEF $CFLAGS",
'INC' => "$DFLAGS $F_INC",
'OBJECT' => join(' ', @objs, $F_OBJECT),
clean => { FILES=>'testout' },
);
if ($] ge '5.005') {
$opts{AUTHOR} = 'Arnar M. Hrafnkelsson, addi@umich.edu';
$opts{ABSTRACT} = 'Perl extension for Generating 24 bit Images';
}
if ($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
';
}
# 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 $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.
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
$F_DEFINE .= "-DIM_GIFMAJOR=$major -DIM_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 $libchk=$formats{$frm}{'libcheck'};
my $incchk=$formats{$frm}{'inccheck'};
my @l;
for my $lp (@libs) {
push(@l, gd($lp,$libchk));
}
my @i;
for my $ip (@incs) {
push(@i, gd($ip,$incchk));
}
printf("%10s: includes %s - libraries %s\n",$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(" $_ doesnt exist or is unaccessible - removed."),0) } @incs;
if ($VERBOSE) {
print "\nLibrary paths:\n";
for (@incs) { print $_,"\n"; }
}
@libs=grep { -d $_ && -r _ && -x _ or ( print(" $_ doesnt exist or is unaccessible - removed."),0) } @libs;
print "\ndone.\n";
}
# Format data initialization
# format definition is:
# defines needed
# default include path
# files needed for include (boolean perl code)
# default lib path
# libs needed
# files needed for link (boolean perl code)
# object files needed for the format
sub init {
@definc{'/usr/include'}=();
@incs=(qw(/usr/include/freetype2 /usr/local/include/freetype2 /usr/include /usr/local/include /usr/include/freetype /usr/local/include/freetype), split /\Q$Config{path_sep}/, $INCPATH );
@libs=( split(/\Q$Config{path_sep}/,$LIBPATH) , split(/ /, $Config{'libpth'}));
if ($^O =~ /win32/i && $Config{cc} =~ /\bcl\b/i) {
push(@incs, split /;/, $ENV{INCLUDE}) if exists $ENV{INCLUDE};
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';
}
$formats{'jpeg'}={
order=>'21',
def=>'HAVE_LIBJPEG',
inccheck=>sub { $_[0] eq '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 { $_[0] eq '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 { $_[0] eq '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}
};
$formats{'gif'}={
order=>'20',
def=>'HAVE_LIBGIF',
inccheck=>sub { $_[0] eq '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 { $_[0] eq '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 { $_[0] eq '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 { $_[0] eq 'freetype.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 { lc $_[0] eq '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 { lc $_[0] eq '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.
DOCS
};
# 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 { $EXTDEF.=' -DIMAGER_LOG'; }
if ($DEBUG_MALLOC) {
$EXTDEF.=' -DIMAGER_DEBUG_MALLOC';
print "Malloc debugging enabled\n";
}
}