Java Heap Space Exception if Quartus II Compilation is Enabled - Java Heap Space Exception if Quartus II Compilation is Enabled Description If your design contains a C2H accelerator, and you select Build software, generate SOPC Builder system, and run Quartus II compilation in the C2H view, you might see the following error during Quartus II compilation: Exception in thread "main" java.lang.OutOfMemoryError: Java heap space make: *** [c2h_hdl-t] Error 1 Resolution Select the Build software and generate SOPC builder system option in the C2H Compiler settings window, and then manually launch the Quartus II software to compile the design. Custom Fields values: ['novalue'] Troubleshooting novalue True ['novalue'] ['FPGA Dev Tools Quartus II Software'] novalue 10.0 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']