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Hi All, I just installed systemc 2.3.1 in windows 7.0 using cygwin64. I have also installed systemc-ams_2.0_beta1 I have compiled the exercise from Fraunhofer (comb_filter). this is the log: 15:48:17 **** Build of configuration Release for project test2 **** make all Building file: ../src/comb_filter.cpp Invoking: Cygwin C++ Compiler g++ -IC:/systemc-2.3.1/include -IC:/systemc-ams-2.0_beta1/include -IC:/TUV_AMS_Library/output/include/ -O3 -Wall -c -fmessage-length=0 -MMD -MP -MF"src/comb_filter.d" -MT"src/comb_filter.o" -o "src/comb_filter.o" "../src/comb_filter.cpp" In file included from C:/systemc-ams-2.0_beta1/include/systemc-ams:81:0, from C:/systemc-ams-2.0_beta1/include/systemc-ams.h:53, from ../src/comb_filter.cpp:17: C:/systemc-ams-2.0_beta1/include/scams/utility/data_types/sca_constants.h:52:21: warning: 'sca_util::SCA_UNDEFINED' defined but not used [-Wunused-variable] static const double SCA_UNDEFINED=std::numeric_limits<double>::max(); ^ Finished building: ../src/comb_filter.cpp Building file: ../src/dec_path_tb.cpp Invoking: Cygwin C++ Compiler g++ -IC:/systemc-2.3.1/include -IC:/systemc-ams-2.0_beta1/include -IC:/TUV_AMS_Library/output/include/ -O3 -Wall -c -fmessage-length=0 -MMD -MP -MF"src/dec_path_tb.d" -MT"src/dec_path_tb.o" -o "src/dec_path_tb.o" "../src/dec_path_tb.cpp" In file included from C:/systemc-ams-2.0_beta1/include/systemc-ams:81:0, from C:/systemc-ams-2.0_beta1/include/systemc-ams.h:53, from ../src/sin_src.h:17, from ../src/dec_path_tb.cpp:17: C:/systemc-ams-2.0_beta1/include/scams/utility/data_types/sca_constants.h:52:21: warning: 'sca_util::SCA_UNDEFINED' defined but not used [-Wunused-variable] static const double SCA_UNDEFINED=std::numeric_limits<double>::max(); ^ Finished building: ../src/dec_path_tb.cpp Building file: ../src/prefi.cpp Invoking: Cygwin C++ Compiler g++ -IC:/systemc-2.3.1/include -IC:/systemc-ams-2.0_beta1/include -IC:/TUV_AMS_Library/output/include/ -O3 -Wall -c -fmessage-length=0 -MMD -MP -MF"src/prefi.d" -MT"src/prefi.o" -o "src/prefi.o" "../src/prefi.cpp" In file included from C:/systemc-ams-2.0_beta1/include/systemc-ams:81:0, from C:/systemc-ams-2.0_beta1/include/systemc-ams.h:53, from ../src/prefi.h:17, from ../src/prefi.cpp:17: C:/systemc-ams-2.0_beta1/include/scams/utility/data_types/sca_constants.h:52:21: warning: 'sca_util::SCA_UNDEFINED' defined but not used [-Wunused-variable] static const double SCA_UNDEFINED=std::numeric_limits<double>::max(); ^ Finished building: ../src/prefi.cpp Building file: ../src/sadc.cpp Invoking: Cygwin C++ Compiler g++ -IC:/systemc-2.3.1/include -IC:/systemc-ams-2.0_beta1/include -IC:/TUV_AMS_Library/output/include/ -O3 -Wall -c -fmessage-length=0 -MMD -MP -MF"src/sadc.d" -MT"src/sadc.o" -o "src/sadc.o" "../src/sadc.cpp" In file included from C:/systemc-ams-2.0_beta1/include/systemc-ams:81:0, from C:/systemc-ams-2.0_beta1/include/systemc-ams.h:53, from ../src/sadc.h:21, from ../src/sadc.cpp:17: C:/systemc-ams-2.0_beta1/include/scams/utility/data_types/sca_constants.h:52:21: warning: 'sca_util::SCA_UNDEFINED' defined but not used [-Wunused-variable] static const double SCA_UNDEFINED=std::numeric_limits<double>::max(); ^ Finished building: ../src/sadc.cpp Building file: ../src/sin_src.cpp Invoking: Cygwin C++ Compiler g++ -IC:/systemc-2.3.1/include -IC:/systemc-ams-2.0_beta1/include -IC:/TUV_AMS_Library/output/include/ -O3 -Wall -c -fmessage-length=0 -MMD -MP -MF"src/sin_src.d" -MT"src/sin_src.o" -o "src/sin_src.o" "../src/sin_src.cpp" In file included from C:/systemc-ams-2.0_beta1/include/systemc-ams:81:0, from C:/systemc-ams-2.0_beta1/include/systemc-ams.h:53, from ../src/sin_src.h:17, from ../src/sin_src.cpp:17: C:/systemc-ams-2.0_beta1/include/scams/utility/data_types/sca_constants.h:52:21: warning: 'sca_util::SCA_UNDEFINED' defined but not used [-Wunused-variable] static const double SCA_UNDEFINED=std::numeric_limits<double>::max(); ^ Finished building: ../src/sin_src.cpp Building target: test2.exe Invoking: Cygwin C++ Linker g++ -LC:/systemc-2.3.1/lib-cygwin64 -LC:/systemc-ams-2.0_beta1/lib-cygwin -LC:/TUV_AMS_Library/output/lib -o "test2.exe" ./src/comb_filter.o ./src/dec_path_tb.o ./src/prefi.o ./src/sadc.o ./src/sin_src.o -lsystemc -lsystemc-ams -ltuv_ams_library Finished building target: test2.exe 15:48:35 Build Finished (took 18s.217ms) When I run test2.exe This is what I get: SystemC 2.3.1-Accellera --- Mar 15 2016 17:03:13 Copyright © 1996-2014 by all Contributors, ALL RIGHTS RESERVED SystemC AMS extensions 2.0 Version: 2.0_beta1 --- BuildRevision: 1739 20140531 Copyright © 2010-2014 by Fraunhofer-Gesellschaft Institut Integrated Circuits / EAS Licensed under the Apache License, Version 2.0 Info: SystemC-AMS: 4 SystemC-AMS modules instantiated 1 SystemC-AMS views created 4 SystemC-AMS synchronization objects/solvers instantiated Info: SystemC-AMS: 1 dataflow clusters instantiated cluster 0: 4 dataflow modules/solver, contains e.g. module: sin1 193 elements in schedule list, 64 us cluster period, ratio to lowest: 64 e.g. module: sin1 ratio to highest: 1 sample time e.g. module: dec1 0 connections to SystemC de, 1 connections from SystemC de The otuput file path_tb.dat is empty. It seems that the sc_mian is not reaching the return 0. I am using Eclipse Mars2 (Rel 4.5.2) as an IDE for C/C++ Does someone have had a similar issue?. Attached is the eclipse project. Thanks !. Alejandro test2.zip