[24bd860] | 1 | #line 1 |
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| 2 | package Module::Install::Can; |
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| 3 | |
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| 4 | use strict; |
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| 5 | use Config (); |
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| 6 | use File::Spec (); |
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| 7 | use ExtUtils::MakeMaker (); |
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| 8 | use Module::Install::Base (); |
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| 9 | |
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| 10 | use vars qw{$VERSION @ISA $ISCORE}; |
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| 11 | BEGIN { |
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| 12 | $VERSION = '0.91'; |
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| 13 | @ISA = 'Module::Install::Base'; |
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| 14 | $ISCORE = 1; |
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| 15 | } |
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| 16 | |
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| 17 | # check if we can load some module |
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| 18 | ### Upgrade this to not have to load the module if possible |
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| 19 | sub can_use { |
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| 20 | my ($self, $mod, $ver) = @_; |
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| 21 | $mod =~ s{::|\\}{/}g; |
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| 22 | $mod .= '.pm' unless $mod =~ /\.pm$/i; |
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| 23 | |
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| 24 | my $pkg = $mod; |
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| 25 | $pkg =~ s{/}{::}g; |
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| 26 | $pkg =~ s{\.pm$}{}i; |
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| 27 | |
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| 28 | local $@; |
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| 29 | eval { require $mod; $pkg->VERSION($ver || 0); 1 }; |
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| 30 | } |
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| 31 | |
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| 32 | # check if we can run some command |
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| 33 | sub can_run { |
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| 34 | my ($self, $cmd) = @_; |
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| 35 | |
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| 36 | my $_cmd = $cmd; |
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| 37 | return $_cmd if (-x $_cmd or $_cmd = MM->maybe_command($_cmd)); |
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| 38 | |
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| 39 | for my $dir ((split /$Config::Config{path_sep}/, $ENV{PATH}), '.') { |
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| 40 | next if $dir eq ''; |
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| 41 | my $abs = File::Spec->catfile($dir, $_[1]); |
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| 42 | return $abs if (-x $abs or $abs = MM->maybe_command($abs)); |
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| 43 | } |
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| 44 | |
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| 45 | return; |
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| 46 | } |
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| 47 | |
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| 48 | # can we locate a (the) C compiler |
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| 49 | sub can_cc { |
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| 50 | my $self = shift; |
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| 51 | my @chunks = split(/ /, $Config::Config{cc}) or return; |
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| 52 | |
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| 53 | # $Config{cc} may contain args; try to find out the program part |
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| 54 | while (@chunks) { |
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| 55 | return $self->can_run("@chunks") || (pop(@chunks), next); |
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| 56 | } |
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| 57 | |
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| 58 | return; |
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| 59 | } |
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| 60 | |
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| 61 | # Fix Cygwin bug on maybe_command(); |
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| 62 | if ( $^O eq 'cygwin' ) { |
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| 63 | require ExtUtils::MM_Cygwin; |
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| 64 | require ExtUtils::MM_Win32; |
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| 65 | if ( ! defined(&ExtUtils::MM_Cygwin::maybe_command) ) { |
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| 66 | *ExtUtils::MM_Cygwin::maybe_command = sub { |
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| 67 | my ($self, $file) = @_; |
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| 68 | if ($file =~ m{^/cygdrive/}i and ExtUtils::MM_Win32->can('maybe_command')) { |
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| 69 | ExtUtils::MM_Win32->maybe_command($file); |
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| 70 | } else { |
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| 71 | ExtUtils::MM_Unix->maybe_command($file); |
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| 72 | } |
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| 73 | } |
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| 74 | } |
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| 75 | } |
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| 76 | |
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| 77 | 1; |
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| 78 | |
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| 79 | __END__ |
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| 80 | |
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| 81 | #line 156 |
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