diff options
Diffstat (limited to 'inc/Module/Install/Can.pm')
-rw-r--r-- | inc/Module/Install/Can.pm | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/inc/Module/Install/Can.pm b/inc/Module/Install/Can.pm new file mode 100644 index 0000000..71ccc27 --- /dev/null +++ b/inc/Module/Install/Can.pm @@ -0,0 +1,81 @@ +#line 1 +package Module::Install::Can; + +use strict; +use Config (); +use File::Spec (); +use ExtUtils::MakeMaker (); +use Module::Install::Base (); + +use vars qw{$VERSION @ISA $ISCORE}; +BEGIN { + $VERSION = '1.00'; + @ISA = 'Module::Install::Base'; + $ISCORE = 1; +} + +# check if we can load some module +### Upgrade this to not have to load the module if possible +sub can_use { + my ($self, $mod, $ver) = @_; + $mod =~ s{::|\\}{/}g; + $mod .= '.pm' unless $mod =~ /\.pm$/i; + + my $pkg = $mod; + $pkg =~ s{/}{::}g; + $pkg =~ s{\.pm$}{}i; + + local $@; + eval { require $mod; $pkg->VERSION($ver || 0); 1 }; +} + +# check if we can run some command +sub can_run { + my ($self, $cmd) = @_; + + my $_cmd = $cmd; + return $_cmd if (-x $_cmd or $_cmd = MM->maybe_command($_cmd)); + + for my $dir ((split /$Config::Config{path_sep}/, $ENV{PATH}), '.') { + next if $dir eq ''; + my $abs = File::Spec->catfile($dir, $_[1]); + return $abs if (-x $abs or $abs = MM->maybe_command($abs)); + } + + return; +} + +# can we locate a (the) C compiler +sub can_cc { + my $self = shift; + my @chunks = split(/ /, $Config::Config{cc}) or return; + + # $Config{cc} may contain args; try to find out the program part + while (@chunks) { + return $self->can_run("@chunks") || (pop(@chunks), next); + } + + return; +} + +# Fix Cygwin bug on maybe_command(); +if ( $^O eq 'cygwin' ) { + require ExtUtils::MM_Cygwin; + require ExtUtils::MM_Win32; + if ( ! defined(&ExtUtils::MM_Cygwin::maybe_command) ) { + *ExtUtils::MM_Cygwin::maybe_command = sub { + my ($self, $file) = @_; + if ($file =~ m{^/cygdrive/}i and ExtUtils::MM_Win32->can('maybe_command')) { + ExtUtils::MM_Win32->maybe_command($file); + } else { + ExtUtils::MM_Unix->maybe_command($file); + } + } + } +} + +1; + +__END__ + +#line 156 |