From 1dca9b9dbc9c790d627e8112adae7333c7a450f7 Mon Sep 17 00:00:00 2001
From: Nyall Dawson <nyall.dawson@gmail.com>
Date: Sun, 6 Aug 2023 16:58:30 +1000
Subject: [PATCH] Treat external includes as system libraries, so we don't get
 warnings when compiling them

---
 src/core/CMakeLists.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt
index 329545cfc26..d2618b3646a 100644
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -2308,6 +2308,10 @@ target_include_directories(qgis_core PUBLIC
   validity
   vector
   vectortile
+)
+
+# treat these as system libraries -- we don't want warnings from them
+target_include_directories(qgis_core SYSTEM PUBLIC
   ${CMAKE_SOURCE_DIR}/external
   ${CMAKE_SOURCE_DIR}/external/nlohmann
   ${CMAKE_SOURCE_DIR}/external/kdbush/include