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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 | # If undefined, try our best, if true, require XS, if false, never do |
11 | # XS |
12 | my $force_xs; |
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13 | |
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14 | for (@ARGV) { |
15 | /^--pm/ and $force_xs = 0; |
16 | /^--xs/ and $force_xs = 1; |
17 | } |
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18 | |
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19 | my $has_compiler = $force_xs; |
20 | unless ( defined $force_xs ) { |
21 | $has_compiler = check_for_compiler() |
22 | or no_cc(); |
23 | } |
24 | |
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25 | my %prereqs = ( |
26 | 'Scalar::Util' => '1.18', |
27 | 'Sub::Name' => '0.02', |
28 | 'Sub::Identify' => '0.03', |
29 | 'MRO::Compat' => '0.05', |
30 | 'Carp' => 0, |
31 | ); |
32 | |
33 | delete $prereqs{'Sub::Name'} |
34 | unless $has_compiler; |
35 | |
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36 | write_makefile(); |
37 | |
38 | sub write_makefile { |
39 | my $ccflags = -d '.svn' || $ENV{MAINTAINER_MODE} ? '-Wall' : ''; |
40 | |
41 | WriteMakefile( |
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42 | VERSION_FROM => 'lib/Class/MOP.pm', |
43 | NAME => 'Class::MOP', |
44 | PREREQ_PM => \%prereqs, |
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45 | CONFIGURE => \&init, |
46 | CCFLAGS => $ccflags, |
47 | clean => { FILES => 'test.c test.o' }, |
48 | ABSTRACT_FROM => 'lib/Class/MOP.pm', |
49 | AUTHOR => 'Stevan Little <stevan@iinteractive.com>', |
50 | LICENSE => 'perl', |
51 | ); |
52 | } |
53 | |
54 | sub no_cc { |
55 | print <<'EOF'; |
56 | |
57 | I cannot determine if you have a C compiler |
58 | so I will install a perl-only implementation |
59 | |
60 | You can force installation of the XS version with |
61 | |
62 | perl Makefile.PL --xs |
63 | |
64 | EOF |
65 | } |
66 | |
67 | sub check_for_compiler { |
68 | print "Testing if you have a C compiler\n"; |
69 | |
70 | eval { require ExtUtils::CBuilder }; |
71 | if ($@) { |
72 | return _check_for_compiler_manually(); |
73 | } |
74 | else { |
75 | return _check_for_compiler_with_cbuilder(); |
76 | } |
77 | } |
78 | |
79 | sub _check_for_compiler_with_cbuilder { |
80 | my $cb = ExtUtils::CBuilder->new( quiet => 1 ); |
81 | |
82 | return $cb->have_compiler(); |
83 | } |
84 | |
85 | sub _check_for_compiler_manually { |
86 | unless ( open F, '>', 'test.c' ) { |
87 | warn |
88 | "Cannot write test.c, skipping test compilation and installing pure Perl version.\n"; |
89 | return 0; |
90 | } |
91 | |
92 | print F <<'EOF'; |
93 | int main() { return 0; } |
94 | EOF |
95 | |
96 | close F or return 0; |
97 | |
98 | my $cc = $Config{cc}; |
99 | if ( $cc =~ /cl(\.exe)?$/ ) { |
100 | |
101 | # stupid stupid MSVC compiler hack tacken from version.pm's |
102 | # Makefile.PL |
103 | $cc .= ' -c'; # prevent it from calling the linker |
104 | } |
105 | |
106 | system("$cc -o test$Config{obj_ext} test.c") and return 0; |
107 | |
108 | unlink $_ for grep {-f} 'test.c', "test$Config{obj_ext}"; |
109 | |
110 | return 1; |
111 | } |
112 | |
113 | # This is EUMM voodoo |
114 | sub init { |
115 | my $hash = $_[1]; |
116 | |
117 | unless ($has_compiler) { |
118 | @{$hash}{ 'XS', 'C' } = ( {}, [] ); |
119 | } |
120 | |
121 | $hash; |
122 | } |