+void GnuCompiler::do_prepare()
+{
+ executable = builder.get_vfs().find_binary(command);
+ if(executable)
+ {
+ ExternalTask::Arguments argv;
+ argv.push_back(executable->get_path().str());
+ argv.push_back("-dumpversion");
+
+ builder.get_logger().log("auxcommands", format("Running %s", join(argv.begin(), argv.end())));
+ try
+ {
+ version = strip(ExternalTask::run_and_capture_output(argv));
+ builder.get_logger().log("tools", format("%s version is %s", FS::basename(executable->get_path()), version));
+
+ if(tag=="CXX")
+ {
+ const FS::Path &sysroot = build_info.sysroot;
+ FS::Path cxx_path = sysroot/"usr"/"include"/"c++"/version;
+ if(FS::is_dir(cxx_path))
+ system_path.push_back(cxx_path);
+ }
+ }
+ catch(const runtime_error &)
+ { }
+ }
+}
+