svdpi.h is common to all the simulators, including VCS and ModelSim. You are likely missing the environment variable that points to the simulator's include directory. Try typing "make check" in build_sim. It will probably tell you that either MTI_HOME or VCS_HOME isn't defined. svdpi.h is expected at ${MTI_HOME}/include or ${VCS_HOME}/include. -Michael On 5/23/18, 2:39 PM, "OPAE on behalf of Kazutomo Yoshii" <opae-bounces(a)lists.01.org on behalf of kazutomo(a)mcs.anl.gov&gt; wrote: Hi, I got the following error. I couldn't find svdpi.h in opae-sdk and looks like that is a header file in verilator. Do I need to install verilator? intel-fpga-bbb/samples/tutorial/01_hello_world/build_sim/sw/ase_common.h:75:19: fatal error: svdpi.h: No such file or directory #include "svdpi.h" Here is what I did. $ cd intel-fpga-bbb/samples/tutorial/01_hello_world $ afu_sim_setup --source hw/rtl/sources.txt build_sim $ cd build_sim && make opae-sdk 36afd (1.0.0) intel-fpga-bbb 7fc7d3 quartus Version 17.1.0 Build 240 RHEL 7.5 - kaz _______________________________________________ OPAE mailing list OPAE(a)lists.01.org https://lists.01.org/mailman/listinfo/opae _______________________________________________ OPAE mailing list OPAE(a)lists.01.org https://lists.01.org/mailman/listinfo/opae