From eb1616d6b0c4c4389bf204038394eda9a2f66e1c Mon Sep 17 00:00:00 2001
From: Tobias Fischer <info@tobiasfischer.info>
Date: Mon, 23 Jan 2023 11:52:51 +1000
Subject: [PATCH] Fix compilation for newer clang

---
 rviz_imu_plugin/CMakeLists.txt | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/rviz_imu_plugin/CMakeLists.txt b/rviz_imu_plugin/CMakeLists.txt
index 3c583311..d2a5189b 100644
--- a/rviz_imu_plugin/CMakeLists.txt
+++ b/rviz_imu_plugin/CMakeLists.txt
@@ -6,6 +6,18 @@ find_package(catkin REQUIRED COMPONENTS roscpp rviz)
 ## This setting causes Qt's "MOC" generation to happen automatically.
 set(CMAKE_AUTOMOC ON)
 
+if(${CMAKE_C_COMPILER_ID} STREQUAL "Clang" AND ${CMAKE_C_COMPILER_VERSION} VERSION_GREATER_EQUAL "11")
+  # newer Clang chokes on the idiomatic way to use CF_ENUM; e.g. like this:
+  #     typedef CF_ENUM(int, MyEnum) {
+  #       MY_ENUM_THING,
+  #       MY_ENUM_OTHER_THING,
+  #       # etc...
+  #     }
+  SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-elaborated-enum-base -Wno-undef-prefix")
+  SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-elaborated-enum-base -Wno-undef-prefix")
+  SET(CMAKE_ASM_FLAGS "${CMAKE_ASM_FLAGS} -Wno-undef-prefix")
+endif()
+
 ## This plugin includes Qt widgets, so we must include Qt.
 ## We'll use the version that rviz used so they are compatible.
 if(rviz_QT_VERSION VERSION_LESS "5")