From 3b7576d95ccc03a75b1c0cfdcadeadeb8d782115 Mon Sep 17 00:00:00 2001
From: Alexander Shaduri <ashaduri@gmail.com>
Date: Mon, 22 Mar 2021 16:48:42 +0400
Subject: [PATCH] Catch2: Treat catch2 headers as system.

---
 dependencies/catch2/Catch2/src/CMakeLists.txt | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

diff --git a/dependencies/catch2/Catch2/src/CMakeLists.txt b/dependencies/catch2/Catch2/src/CMakeLists.txt
index 2f3dd4a..03f396d 100644
--- a/dependencies/catch2/Catch2/src/CMakeLists.txt
+++ b/dependencies/catch2/Catch2/src/CMakeLists.txt
@@ -271,11 +271,19 @@ target_compile_features(Catch2
     cxx_variadic_macros
 )
 
-target_include_directories(Catch2
-  PUBLIC
-    $<BUILD_INTERFACE:${SOURCES_DIR}/..>
-    $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
-)
+if (NOT_SUBPROJECT)
+    target_include_directories(Catch2
+      PUBLIC
+        $<BUILD_INTERFACE:${SOURCES_DIR}/..>
+        $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
+    )
+else()
+    target_include_directories(Catch2
+      SYSTEM PUBLIC
+        $<BUILD_INTERFACE:${SOURCES_DIR}/..>
+        $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
+    )
+endif()
 
 
 add_library(Catch2WithMain STATIC