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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