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1 | # The perl/C checking voodoo is mostly stolen from Graham Barr's |
2 | # Scalar-List-Utils distribution. |
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3 | use strict; |
4 | use warnings; |
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5 | |
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6 | use ExtUtils::MakeMaker; |
7 | use Config qw(%Config); |
8 | use File::Spec; |
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9 | |
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10 | use 5.008; |
11 | |
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12 | # If undefined, try our best, if true, require XS, if false, never do |
13 | # XS |
14 | my $force_xs; |
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15 | |
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16 | for (@ARGV) { |
17 | /^--pm/ and $force_xs = 0; |
18 | /^--xs/ and $force_xs = 1; |
19 | } |
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20 | |
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21 | my $has_compiler = $force_xs; |
22 | unless ( defined $force_xs ) { |
23 | $has_compiler = check_for_compiler() |
24 | or no_cc(); |
25 | } |
26 | |
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27 | my %prereqs = ( |
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28 | 'Scalar::Util' => '1.18', |
29 | 'Sub::Name' => '0.04', |
30 | 'Sub::Identify' => '0.03', |
31 | 'MRO::Compat' => '0.05', |
32 | 'Test::More' => '0', |
33 | 'Test::Exception' => '0', |
34 | 'File::Spec' => '0', |
35 | 'Carp' => '0', |
36 | 'Devel::GlobalDestruction' => '0', |
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37 | ); |
38 | |
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39 | delete @prereqs{qw(Sub::Name Devel::GlobalDestruction)} |
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40 | unless $has_compiler; |
41 | |
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42 | if ($has_compiler && is_maintainer()) { |
43 | create_pp_tests(); |
44 | } |
45 | |
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46 | write_makefile(); |
47 | |
48 | sub write_makefile { |
49 | my $ccflags = -d '.svn' || $ENV{MAINTAINER_MODE} ? '-Wall' : ''; |
50 | |
51 | WriteMakefile( |
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52 | VERSION_FROM => 'lib/Class/MOP.pm', |
53 | NAME => 'Class::MOP', |
54 | PREREQ_PM => \%prereqs, |
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55 | CONFIGURE => \&init, |
56 | CCFLAGS => $ccflags, |
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57 | clean => { FILES => 'test.c test.o t/pp*' }, |
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58 | ABSTRACT_FROM => 'lib/Class/MOP.pm', |
59 | AUTHOR => 'Stevan Little <stevan@iinteractive.com>', |
60 | LICENSE => 'perl', |
61 | ); |
62 | } |
63 | |
64 | sub no_cc { |
65 | print <<'EOF'; |
66 | |
67 | I cannot determine if you have a C compiler |
68 | so I will install a perl-only implementation |
69 | |
70 | You can force installation of the XS version with |
71 | |
72 | perl Makefile.PL --xs |
73 | |
74 | EOF |
75 | } |
76 | |
77 | sub check_for_compiler { |
78 | print "Testing if you have a C compiler\n"; |
79 | |
80 | eval { require ExtUtils::CBuilder }; |
81 | if ($@) { |
82 | return _check_for_compiler_manually(); |
83 | } |
84 | else { |
85 | return _check_for_compiler_with_cbuilder(); |
86 | } |
87 | } |
88 | |
89 | sub _check_for_compiler_with_cbuilder { |
90 | my $cb = ExtUtils::CBuilder->new( quiet => 1 ); |
91 | |
92 | return $cb->have_compiler(); |
93 | } |
94 | |
95 | sub _check_for_compiler_manually { |
96 | unless ( open F, '>', 'test.c' ) { |
97 | warn |
98 | "Cannot write test.c, skipping test compilation and installing pure Perl version.\n"; |
99 | return 0; |
100 | } |
101 | |
102 | print F <<'EOF'; |
103 | int main() { return 0; } |
104 | EOF |
105 | |
106 | close F or return 0; |
107 | |
108 | my $cc = $Config{cc}; |
109 | if ( $cc =~ /cl(\.exe)?$/ ) { |
110 | |
111 | # stupid stupid MSVC compiler hack tacken from version.pm's |
112 | # Makefile.PL |
113 | $cc .= ' -c'; # prevent it from calling the linker |
114 | } |
115 | |
116 | system("$cc -o test$Config{obj_ext} test.c") and return 0; |
117 | |
118 | unlink $_ for grep {-f} 'test.c', "test$Config{obj_ext}"; |
119 | |
120 | return 1; |
121 | } |
122 | |
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123 | # This sucks, but it's the best guess we can make. Since we just use |
124 | # it to run two sets of tests, it's not big deal if it ends up true |
125 | # for a non-maintainer. |
126 | sub is_maintainer { |
127 | return 0 if $ENV{PERL5_CPAN_IS_RUNNING} || $ENV{PERL5_CPANPLUS_IS_RUNNING}; |
128 | |
129 | return 1; |
130 | } |
131 | |
132 | sub create_pp_tests { |
133 | opendir my $dh, 't' or die "Cannot read t: $!"; |
134 | |
135 | foreach my $file ( grep {/^\d.+\.t$/} readdir $dh ) { |
136 | next if $file =~ /^99/; |
137 | |
138 | my $real_file = File::Spec->catfile( 't', $file ); |
139 | |
140 | open my $fh, '<', $real_file |
141 | or die "Cannot read $real_file: $!"; |
142 | |
143 | my $shbang = <$fh>; |
144 | my $test = do { local $/; <$fh> }; |
145 | |
146 | close $fh; |
147 | |
148 | $test = "$shbang\nBEGIN { \$ENV{CLASS_MOP_NO_XS} = 1 }\n\n$test"; |
149 | |
150 | my $new_file = File::Spec->catfile( 't', "pp_$file" ); |
151 | open my $new_fh, '>', $new_file |
152 | or die "Cannot write to $new_file: $!"; |
153 | |
154 | print $new_fh $test; |
155 | |
156 | close $new_fh; |
157 | } |
158 | } |
159 | |
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160 | # This is EUMM voodoo |
161 | sub init { |
162 | my $hash = $_[1]; |
163 | |
164 | unless ($has_compiler) { |
165 | @{$hash}{ 'XS', 'C' } = ( {}, [] ); |
166 | } |
167 | |
168 | $hash; |
169 | } |