84 lines
1.8 KiB
Perl
84 lines
1.8 KiB
Perl
#line 1
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package Module::Install::Can;
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use strict;
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use Module::Install::Base;
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use Config ();
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### This adds a 5.005 Perl version dependency.
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### This is a bug and will be fixed.
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use File::Spec ();
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use ExtUtils::MakeMaker ();
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use vars qw{$VERSION $ISCORE @ISA};
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BEGIN {
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$VERSION = '0.77';
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$ISCORE = 1;
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@ISA = qw{Module::Install::Base};
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}
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# check if we can load some module
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### Upgrade this to not have to load the module if possible
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sub can_use {
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my ($self, $mod, $ver) = @_;
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$mod =~ s{::|\\}{/}g;
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$mod .= '.pm' unless $mod =~ /\.pm$/i;
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my $pkg = $mod;
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$pkg =~ s{/}{::}g;
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$pkg =~ s{\.pm$}{}i;
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local $@;
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eval { require $mod; $pkg->VERSION($ver || 0); 1 };
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}
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# check if we can run some command
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sub can_run {
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my ($self, $cmd) = @_;
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my $_cmd = $cmd;
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return $_cmd if (-x $_cmd or $_cmd = MM->maybe_command($_cmd));
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for my $dir ((split /$Config::Config{path_sep}/, $ENV{PATH}), '.') {
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next if $dir eq '';
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my $abs = File::Spec->catfile($dir, $_[1]);
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return $abs if (-x $abs or $abs = MM->maybe_command($abs));
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}
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return;
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}
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# can we locate a (the) C compiler
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sub can_cc {
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my $self = shift;
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my @chunks = split(/ /, $Config::Config{cc}) or return;
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# $Config{cc} may contain args; try to find out the program part
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while (@chunks) {
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return $self->can_run("@chunks") || (pop(@chunks), next);
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}
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return;
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}
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# Fix Cygwin bug on maybe_command();
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if ( $^O eq 'cygwin' ) {
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require ExtUtils::MM_Cygwin;
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require ExtUtils::MM_Win32;
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if ( ! defined(&ExtUtils::MM_Cygwin::maybe_command) ) {
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*ExtUtils::MM_Cygwin::maybe_command = sub {
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my ($self, $file) = @_;
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if ($file =~ m{^/cygdrive/}i and ExtUtils::MM_Win32->can('maybe_command')) {
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ExtUtils::MM_Win32->maybe_command($file);
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} else {
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ExtUtils::MM_Unix->maybe_command($file);
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}
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}
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}
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}
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1;
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__END__
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#line 158
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