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.

template toInt(char[4] arg)
{
	const uint toInt = (cast(uint[]) arg)[0];
	}
	 
	 void main()
	 {
	   auto i = toInt!("abcd");
	   }