From f600cba8b7d3703a1c8eb4194c9fa66975f08faf Mon Sep 17 00:00:00 2001
From: Kirill Kirilenko <kirill@ultracoder.org>
Date: Sat, 5 Jun 2021 17:42:37 +0300
Subject: [PATCH] Add option to use precompiled headers.

---
 CMakeLists.txt | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 26b386d..e421924 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,8 +1,9 @@
-cmake_minimum_required(VERSION 3.5)
-cmake_policy(SET CMP0015 NEW)
+cmake_minimum_required(VERSION 3.16)
 
 project(screepsxx CXX)
 
+option(SCREEPSXX_ENABLE_PCH ON "Enable precompiled headers")
+
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED TRUE)
 
@@ -14,3 +15,14 @@ target_include_directories(screepsxx
 	PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/include
 	PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include/Screeps
 )
+
+if (SCREEPSXX_ENABLE_PCH)
+	target_precompile_headers(screepsxx PRIVATE
+		<map>
+		<memory>
+		<optional>
+		<string>
+		<vector>
+		<emscripten/val.h>
+	)
+endif()