Setting up a SystemC project with CMake: undefined reference to `sc_core - cmake

Question

I'm trying to build a simple hello world in SystemC with CMake.
Here's the SystemC file main.cpp:
#include <systemc.h>
using namespace std;
SC_MODULE (hello_world) {
SC_CTOR (hello_world) {
}
void say_hello() {
cout << "Hello World SystemC" << endl;
}
};
int sc_main(int argc, char* argv[]) {
hello_world hello("HELLO");
hello.say_hello();
return(0);
}
Here is the CMakeLists.txt:
cmake_minimum_required(VERSION 3.1)
project(SystemCExample)
set (CMAKE_PREFIX_PATH /usr/local/systemc-2.3.2)
include_directories(${CMAKE_PREFIX_PATH}/include)
find_library(systemc systemc ${CMAKE_PREFIX_PATH}/lib-linux64)
link_directories(${CMAKE_PREFIX_PATH}/lib-linux64)
set(CMAKE_CXX_STANDARD 11) # C++11...
set(CMAKE_CXX_STANDARD_REQUIRED ON) #...is required...
set(CMAKE_CXX_EXTENSIONS OFF) #...without compiler extensions like gnu++11
aux_source_directory(. SRC_LIST)
add_executable(${PROJECT_NAME} ${SRC_LIST})
target_link_libraries(SystemCExample systemc)
I keep getting the error:
/usr/local/systemc-2.3.2/include/sysc/kernel/sc_ver.h:179: error: undefined reference to `sc_core::sc_api_version_2_3_2_cxx201103L<&sc_core::SC_DISABLE_VIRTUAL_BIND_UNDEFINED_>::sc_api_version_2_3_2_cxx201103L(sc_core::sc_writer_policy)'
It points to sc_ver.h to the line:
api_version_check
(
SC_DEFAULT_WRITER_POLICY
);
The error mesage appears also when I replace the main.cpp with another simple example. How can I fix it?

Answer 1

Most likely you've built SystemC with C++98. It is default. Currently it requires that you use same C++ standard during library build and for your application.
Here are steps to build SystemC 2.3.2 with CMake
Download SystemC 2.3.2, unpack, change directory to systemc-2.3.2
cd /path/to/systemc-2.3.2
Create build directory:
mkdir build
Configure SystemC build with C++11 support. I also recommend to build it in Debug mode, this helps while learning. Later you can switch to Release builds to speed-up simulation
cmake ../ -DCMAKE_CXX_STANDARD=11 -DCMAKE_BUILD_TYPE=Debug
Build
cmake --build .
CMake will automatically export SystemC library targets to User Package Registry: https://cmake.org/cmake/help/v3.0/manual/cmake-packages.7.html#user-package-registry
Optionally you can install it somewhere, read CMake manual to learn how.
Now try to create sample SystemC project:
main.cpp
#include <systemc.h>
SC_MODULE (hello_world) {
SC_CTOR (hello_world)
{
SC_THREAD(say_hello);
}
void say_hello()
{
cout << "Hello World SystemC" << endl;
}
};
int sc_main(int argc, char* argv[])
{
hello_world hello("HELLO");
sc_start();
return (0);
}
CMakeLists.txt
cmake_minimum_required(VERSION 3.0)
project(test_systemc)
find_package(SystemCLanguage CONFIG REQUIRED)
set (CMAKE_CXX_STANDARD ${SystemC_CXX_STANDARD})
add_executable(test_systemc main.cpp)
target_link_libraries(test_systemc SystemC::systemc)
Build, run, expected output:
./test_systemc
SystemC 2.3.2 --- Oct 14 2017 19:38:30
Copyright (c) 1996-2017 by all Contributors,
ALL RIGHTS RESERVED
Hello World SystemC