devel/rttr: Fix build on 14- / modern Clang

- the bundled rapidjson doesn't build on 14- because of changes
  in the STL; use the version from ports instead which has the
  changes needed already.
- the chaiscript examples don't build with modern Clang on 14-,
  and the examples are explicitly C++14 -- but still don't work

Replace the bundled rapidjson and chaiscripts with the
regular ports versions. There has been some work in git
on both rttr and chaiscript, but neither has a newer
release that might be pulled in, so we'll stick to messy
patching of rttr instead.

devel/rttr/Makefile

@@ -1,7 +1,7 @@
 PORTNAME=	rttr
 DISTVERSIONPREFIX=	v
 DISTVERSION=	0.9.6-16
-PORTREVISION=	1
+PORTREVISION=	2
 DISTVERSIONSUFFIX=	-gb3a131c
 CATEGORIES=	devel
 
@@ -13,13 +13,22 @@ COMMENT=	Run Time Type Reflection
 
 LICENSE=	MIT
 
-USES=		cmake compiler:c++11-lang
+BUILD_DEPENDS=	${LOCALBASE}/include/rapidjson/rapidjson.h:devel/rapidjson \
+		${LOCALBASE}/include/chaiscript/chaiscript.hpp:lang/chaiscript
+
+USES=		cmake compiler:c++17-lang
 USE_GITHUB=	yes
 GH_ACCOUNT=	rttrorg
 
 CMAKE_OFF=	BUILD_DOCUMENTATION \
-		BUILD_UNIT_TESTS
+		BUILD_UNIT_TESTS \
+		BUILD_EXAMPLES
 
 PORTSCOUT=	limit:^0\.
 
+post-extract:
+	${RM} -r ${WRKSRC}/3rd_party/rapidjson-1.1.0/
+	${RM} -r ${WRKSRC}/3rd_party/chaiscript-devel/
+	${RM} -r ${WRKSRC}/3rd_party/chaiscript-6.1.0/
+
 .include <bsd.port.mk>

devel/rttr/files/patch-CMake_3rd__party__libs.cmake

@@ -0,0 +1,23 @@
+--- CMake/3rd_party_libs.cmake.orig	2019-01-18 18:25:46 UTC
++++ CMake/3rd_party_libs.cmake
+@@ -53,7 +53,8 @@ if (BUILD_BENCHMARKS OR BUILD_EXAMPLES)
+     find_package(Threads REQUIRED)
+ endif()
+
+-set(RAPID_JSON_DIR ${RTTR_3RD_PARTY_DIR}/rapidjson-1.1.0)
++find_package(RapidJSON REQUIRED)
++set(RAPID_JSON_DIR ${RapidJSON_INCLUDE_DIR})
+ set(NONIUS_DIR ${RTTR_3RD_PARTY_DIR}/nonius-1.1.2)
+
+ # Prepare "Catch" library for other executables
+@@ -63,7 +64,9 @@ add_library(Catch2::Catch ALIAS Catch)
+ target_include_directories(Catch INTERFACE ${CATCH_INCLUDE_DIR})
+
+ # Find chai script
+-set(CHAISCRIPT_INCLUDE_DIR ${RTTR_3RD_PARTY_DIR}/chaiscript-6.1.0)
++find_package(PkgConfig REQUIRED)
++pkg_check_modules(_chaiscript REQUIRED chaiscript)
++set(CHAISCRIPT_INCLUDE_DIR ${_chaiscript_INCLUDEDIR})
+ add_library(ChaiScript INTERFACE)
+ add_library(ChaiScript::ChaiScript ALIAS ChaiScript)
+ target_include_directories(ChaiScript INTERFACE ${CHAISCRIPT_INCLUDE_DIR})

devel/rttr/files/patch-src_examples_scripting_CMakeLists.txt

@@ -0,0 +1,17 @@
+--- src/examples/scripting/CMakeLists.txt.orig	2021-11-27 21:00:51 UTC
++++ src/examples/scripting/CMakeLists.txt
+@@ -41,12 +41,12 @@ endif()
+
+ add_executable(scripting_example ${SRC_FILES} ${HPP_FILES})
+ target_link_libraries(scripting_example RTTR::Core ChaiScript::ChaiScript ${CMAKE_DL_LIBS} Threads::Threads)
+-# chaiscript minimum C++ version is 14
++# chaiscript minimum C++ version is 17
+ set_target_properties(scripting_example 
+                        PROPERTIES DEBUG_POSTFIX ${RTTR_DEBUG_POSTFIX}
+                                   FOLDER "Examples"
+                                   INSTALL_RPATH "${RTTR_EXECUTABLE_INSTALL_RPATH}"
+-                                  CXX_STANDARD 14)
++                                  CXX_STANDARD 17)
+ if (MSVC)
+     target_compile_options(scripting_example PRIVATE /bigobj) 
+ endif()