From d2b0a47c6fc4f3f4c9c869111c0750f6d5a9d574 Mon Sep 17 00:00:00 2001
From: Daniel Pfeifer <daniel@pfeifer-mail.de>
Date: Tue, 11 Apr 2017 22:56:50 +0200
Subject: Add include-what-you-use mapping

---
 CMakeLists.txt | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'CMakeLists.txt')

diff --git a/CMakeLists.txt b/CMakeLists.txt
index ed5de10efd..545177b6e4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -226,6 +226,17 @@ option(CMAKE_USE_FOLDERS "Enable folder grouping of projects in IDEs." ON)
 mark_as_advanced(CMAKE_USE_FOLDERS)
 
 
+option(CMake_RUN_IWYU "Run include-what-you-use with the compiler." OFF)
+if(CMake_RUN_IWYU)
+  find_program(IWYU_COMMAND NAMES include-what-you-use iwyu)
+  if(NOT IWYU_COMMAND)
+    message(FATAL_ERROR "CMake_RUN_IWYU is ON but include-what-you-use is not found!")
+  endif()
+  set(CMAKE_CXX_INCLUDE_WHAT_YOU_USE
+    "${IWYU_COMMAND};-Xiwyu;--mapping_file=${CMake_SOURCE_DIR}/Utilities/IWYU/mapping.imp")
+endif()
+
+
 #-----------------------------------------------------------------------
 # a macro that only sets the FOLDER target property if it's
 # "appropriate"
-- 
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