Prevent crashes if a tool's executable cannot be found

[builder.git] / source / gnucxxcompiler.cpp

diff --git a/source/gnucxxcompiler.cpp b/source/gnucxxcompiler.cpp
index 18c6728464d7d34f6fd7d2f0a68a7485acf724b7..9e206cc6b525edca08587ec43e966eba37afdf76 100644 (file)
--- a/source/gnucxxcompiler.cpp
+++ b/source/gnucxxcompiler.cpp
@@ -17,19 +17,19 @@ GnuCxxCompiler::GnuCxxCompiler(Builder &b, const Architecture &a):
        input_suffixes.push_back(".cc");
        aux_suffixes.push_back(".hpp");
 
+       if(executable)
+               query_version();
+}
+
+void GnuCxxCompiler::query_version()
+{
        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())));
-       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)
+       try
        {
-               string cxx_ver = strip(task.get_output());
+               string cxx_ver = strip(ExternalTask::run_and_capture_output(argv));
                FS::Path cxx_path = FS::Path("/usr/include/c++")/cxx_ver;
                if(FS::is_dir(cxx_path))
                {
@@ -37,6 +37,8 @@ GnuCxxCompiler::GnuCxxCompiler(Builder &b, const Architecture &a):
                        system_path.push_back(cxx_path);
                }
        }
+       catch(const runtime_error &)
+       { }
 }
 
 Target *GnuCxxCompiler::create_source(const Component &comp, const FS::Path &path) const