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[imager.git] / PNG / Makefile.PL
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1#!perl -w
2use strict;
d24404be 3use ExtUtils::MakeMaker;
1d7e3124 4use Getopt::Long;
b515cc4c 5use Config;
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6
7my $verbose = $ENV{IM_VERBOSE};
8my @libpaths;
9my @incpaths;
10
11GetOptions("incpath=s", \@incpaths,
12 "libpath=s" => \@libpaths,
13 "verbose|v" => \$verbose);
14
15our $BUILDING_IMAGER;
d97c8dbd 16our %IMAGER_LIBS;
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17
18my $MM_ver = eval $ExtUtils::MakeMaker::VERSION;
19
20my %opts =
21 (
22 NAME => 'Imager::File::PNG',
23 VERSION_FROM => 'PNG.pm',
24 OBJECT => 'PNG.o impng.o',
30160513 25 clean => { FILES => 'testout' },
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26 );
27
28my @inc;
29if ($BUILDING_IMAGER) {
30 push @inc, "-I..";
b515cc4c 31 unshift @INC, "../lib";
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32}
33else {
b515cc4c 34 unshift @INC, "inc";
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35 print "PNG: building independently\n";
36 require Imager::ExtUtils;
37 push @inc, Imager::ExtUtils->includes;
38 $opts{TYPEMAPS} = [ Imager::ExtUtils->typemap ];
39
40 # Imager required configure through use
de50f459 41 my @Imager_req = ( Imager => "0.90" );
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42 if ($MM_ver >= 6.46) {
43 $opts{META_MERGE} =
44 {
45 configure_requires =>
46 {
47 @Imager_req,
48 },
49 build_requires =>
50 {
51 @Imager_req,
52 "Test::More" => "0.47",
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53 },
54 resources =>
55 {
56 homepage => "http://imager.perl.org/",
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57 repository => "git://git.imager.perl.org/imager.git",
58 bugtracker => "http://rt.cpan.org/NoAuth/Bugs.html?Dist=Imager",
b515cc4c 59 },
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60 };
61 $opts{PREREQ_PM} =
62 {
63 @Imager_req,
a5919365 64 XSLoader => 0,
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65 };
66 }
67}
68
69require Imager::Probe;
70
57520a19 71# these are mostly needed when pkg-config isn't available
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72my @alts =
73 (
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74 {
75 altname => "v1.6",
76 incsuffix => "libpng16",
77 libbase => "png16",
78 },
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79 {
80 altname => "v1.5",
81 incsuffix => "libpng15",
82 libbase => "png15",
83 },
84 {
85 altname => "v1.4",
86 incsuffix => "libpng14",
87 libbase => "png14",
88 },
89 {
90 altname => "v1.2",
91 incsuffix => "libpng12",
92 libbase => "png12",
93 },
94 {
95 altname => "v1.0",
96 incsuffix => "libpng10",
97 libbase => "png10",
98 },
99 );
100
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101my %probe =
102 (
103 name => "PNG",
cac1147d 104 altname => "Generic",
57520a19 105 pkg => [ qw/libpng libpng16 libpng15 libpng14 libpng12 libpng10/ ],
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106 inccheck => sub { -e File::Spec->catfile($_[0], "png.h") },
107 libbase => "png",
108 testcode => _png_test_code(),
109 testcodeheaders => [ "png.h", "stdio.h" ],
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110 incpath => \@incpaths,
111 libpath => \@libpaths,
0987aae1 112 verbose => $verbose,
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113 alternatives =>
114 [
de50f459 115 @alts,
9b4036f7 116 {
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117 altname => "base (+libz)",
118 libbase => [ "png", "z" ],
cac1147d 119 },
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120 ( # a static libpng may require libz too
121 map +{
122 %$_,
123 altname => "$_->{altname} (+libz)",
124 libbase => [ $_->{libbase}, "z" ],
125 }, @alts
126 ),
cac1147d 127 ],
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128 );
129
130my $probe_res = Imager::Probe->probe(\%probe);
131if ($probe_res) {
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132 $IMAGER_LIBS{PNG} = 1;
133
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134 push @inc, $probe_res->{INC};
135 $opts{LIBS} = $probe_res->{LIBS};
03e49392 136 $opts{DEFINE} = $probe_res->{DEFINE};
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137 $opts{INC} = "@inc";
138
139 if ($MM_ver > 6.06) {
5b480b14 140 $opts{AUTHOR} = 'Tony Cook <tonyc@cpan.org>';
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141 $opts{ABSTRACT} = 'PNG Image file support';
142 }
143
144 WriteMakefile(%opts);
145}
146else {
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147 $IMAGER_LIBS{PNG} = 0;
148
1d7e3124 149 if ($BUILDING_IMAGER) {
d24404be 150 ExtUtils::MakeMaker::WriteEmptyMakefile(%opts);
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151 }
152 else {
153 # fail in good way
154 die "OS unsupported: PNG libraries or headers not found\n";
155 }
156}
157
158sub _png_test_code {
159 return <<'CODE';
160
161fprintf(stderr, "PNG: library version %ld, header version %ld\n", (long)png_access_version_number(), (long)PNG_LIBPNG_VER);
162return 0;
163CODE
164}