+
+ ExternalTask::Arguments argv;
+ argv.push_back(name);
+ argv.push_back("--version");
+ ExternalTask task(argv);
+ task.set_stdout(ExternalTask::CAPTURE);
+ task.set_stderr(ExternalTask::IGNORE);
+ task.start();
+ Task::Status status;
+ while((status=task.check())==Task::RUNNING) ;
+ if(status==Task::SUCCESS)
+ if(RegMatch m = Regex("[0-9]\\.[0-9.]+").match(task.get_output()))
+ {
+ string cxx_ver = m[0].str;
+ while(!cxx_ver.empty())
+ {
+ FS::Path cxx_path = FS::Path("/usr/include/c++")/cxx_ver;
+ if(FS::is_dir(cxx_path))
+ {
+ if(builder.get_verbose()>=5)
+ IO::print("%s version is %s\n", name, cxx_ver);
+ system_path.push_back(cxx_path);
+ break;
+ }
+
+ string::size_type dot = cxx_ver.rfind('.');
+ if(dot==string::npos)
+ break;
+ cxx_ver.erase(dot);
+ }
+ }