build: re-add support for legacy SystemC installations

CMakeLists.txt

@@ -67,6 +67,7 @@ option(DRAMSYS_BUILD_BENCHMARKS "Build DRAMSys benchmarks" OFF)
 option(DRAMSYS_BUILD_CLI "Build DRAMSys Command Line Tool" ${PROJECT_IS_TOP_LEVEL})
 option(DRAMSYS_BUILD_TOOLS "Build DRAMSys Tools" OFF)
 option(DRAMSYS_BUILD_TRACE_ANALYZER "Build DRAMSys Trace Analyzer" OFF)
+option(DRAMSYS_USE_LEGACY_SYSTEMC_INSTALLATION "Use SystemC installed with autotools (set SYSTEMC_HOME)" OFF)
 
 # Use sane defaults for FetchContent:
 # In case we are the top-level project, get everything by default
@@ -144,7 +145,17 @@ if (DRAMSYS_USE_FETCH_CONTENT)
     endif()
 endif()
 
-find_package(SystemCLanguage REQUIRED)
+# Special handling of SystemC:
+# Normally, we require the user to have SystemC installed by CMake
+# However, there are some cases where SystemC is still installed by autotools
+# In this case, try to find SystemC using FindSystemC and SYSTEMC_HOME
+if (DRAMSYS_USE_LEGACY_SYSTEMC_INSTALLATION)
+    message(STATUS "Using legacy SystemC installed with autotools")
+    find_package(SystemC MODULE REQUIRED)
+else()
+    find_package(SystemCLanguage REQUIRED)
+endif()
+
 find_package(SQLite3 REQUIRED)
 find_package(DRAMUtils REQUIRED)
 find_package(DRAMPower REQUIRED)