Add back RapidJSON dependency

RapidJSON was originally removed from the CCI source tree, but since
RapidJSON does not release regularly we should ship the dependency
with CCI. This also improves the out-of-the-box experience when using
add_subdirectory() to import CCI into a CMake project.

Signed-off-by: Lukas Jünger <[email protected]>

src/CMakeLists.txt

@@ -104,10 +104,10 @@ set (CMAKE_CXX_STANDARD ${SystemC_CXX_STANDARD} CACHE STRING
 set (CMAKE_CXX_STANDARD_REQUIRED ${SystemC_CXX_STANDARD_REQUIRED} CACHE BOOL
      "The with CMAKE_CXX_STANDARD selected C++ standard is a requirement.")
 
-find_package(RapidJSON CONFIG REQUIRED)
-
-target_link_libraries(cci SystemC::systemc)
+target_link_libraries(cci PUBLIC SystemC::systemc)
 
+add_subdirectory(rapidjson)
+target_link_libraries(cci PRIVATE rapidjson)
 
 add_library (SystemC::cci ALIAS cci)
 
@@ -135,9 +135,7 @@ target_compile_options(
 target_include_directories(cci
   PUBLIC
   $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
-  $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
-  PRIVATE
-  ${RAPIDJSON_INCLUDE_DIRS})
+  $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
 
 if (APPLE)
   # It's OK that _sc_main is an undefined symbol.

src/rapidjson/CMakeLists.txt

@@ -0,0 +1,3 @@
+add_library(rapidjson INTERFACE)
+
+target_include_directories(rapidjson INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}/include)

src/rapidjson/VERSION

@@ -0,0 +1 @@
+RapidJSON commit ID: 3f73edae00aba5b0112a80b4d41e6f1ff7d92a3d