The Generic Library for Adaptive Computing Environments (GLACE) consists of a comprehensive set of module generators currently targeting Xilinx XC4000 and Virtex devices. In contrast to other research efforts in this area, it provides detailed meta-data about the generated circuits (behavior, area, timing, topology etc.) using the active FLAME interface. All of the modules adhere to a common layout scheme which allows the efficient automatic composition of high-performance data paths.