Update all rclcpp packages to C++17. (#2121)

The main reason to do this is so that we can compile rclcpp
with the clang static analyzer.  As of clang++-14 (what is in
Ubuntu 22.04), the default still seems to be C++14, so we need
to specify C++17 so that new things in the rclcpp headers work
properly.

Further, due to reasons I don't fully understand, I needed to
set CMAKE_CXX_STANDARD_REQUIRED in order for clang to really use
that version.  So set this as well.

Signed-off-by: Chris Lalancette <clalancette@openrobotics.org>

rclcpp/CMakeLists.txt

@@ -25,6 +25,7 @@ find_package(tracetools REQUIRED)
 # Default to C++17
 if(NOT CMAKE_CXX_STANDARD)
   set(CMAKE_CXX_STANDARD 17)
+  set(CMAKE_CXX_STANDARD_REQUIRED ON)
 endif()
 if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID MATCHES "Clang")
   # About -Wno-sign-conversion: With Clang, -Wconversion implies -Wsign-conversion. There are a number of

rclcpp_action/CMakeLists.txt

@@ -9,9 +9,10 @@ find_package(rcl_action REQUIRED)
 find_package(rcpputils REQUIRED)
 find_package(rosidl_runtime_c REQUIRED)
 
-# Default to C++14
+# Default to C++17
 if(NOT CMAKE_CXX_STANDARD)
-  set(CMAKE_CXX_STANDARD 14)
+  set(CMAKE_CXX_STANDARD 17)
+  set(CMAKE_CXX_STANDARD_REQUIRED ON)
 endif()
 if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID MATCHES "Clang")
   add_compile_options(

rclcpp_components/CMakeLists.txt

@@ -2,9 +2,10 @@ cmake_minimum_required(VERSION 3.5)
 
 project(rclcpp_components)
 
-# Default to C++14
+# Default to C++17
 if(NOT CMAKE_CXX_STANDARD)
-  set(CMAKE_CXX_STANDARD 14)
+  set(CMAKE_CXX_STANDARD 17)
+  set(CMAKE_CXX_STANDARD_REQUIRED ON)
 endif()
 if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID MATCHES "Clang")
   add_compile_options(

rclcpp_lifecycle/CMakeLists.txt

@@ -2,9 +2,10 @@ cmake_minimum_required(VERSION 3.5)
 
 project(rclcpp_lifecycle)
 
-# Default to C++14
+# Default to C++17
 if(NOT CMAKE_CXX_STANDARD)
-  set(CMAKE_CXX_STANDARD 14)
+  set(CMAKE_CXX_STANDARD 17)
+  set(CMAKE_CXX_STANDARD_REQUIRED ON)
 endif()
 if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID MATCHES "Clang")
   add_compile_options(-Wall -Wextra -Wpedantic -Wnon-virtual-dtor -Woverloaded-virtual)