Factor out the code to find gcc, and add a command-line option to override the default executable name. This should help cross-compilation by allowing a cross-gcc to be specified from the configuration file instead of only through the CC environment variable.

module tangotests.files1;

//import tango.io.Stdout;
import tango.io.File;

void main()
{
    auto file = new File("files1.output");
    char[] str = "hello world from files1 test\n";
    void[] data = cast(void[])str;
    file.write(str);
}