+sub which
+{
+ my ($name)=@_;
+
+ if (eval { require IPC::Cmd; 1; }) {
+ IPC::Cmd->import();
+ return scalar IPC::Cmd::can_run($name);
+ } else {
+ # if there is $directories component in splitpath,
+ # then it's not something to test with $PATH...
+ return $name if (File::Spec->splitpath($name))[1];
+
+ foreach (File::Spec->path()) {
+ my $fullpath = catfile($_, "$name$target{exe_extension}");
+ if (-f $fullpath and -x $fullpath) {
+ return $fullpath;
+ }
+ }
+ }
+}
+