From e265adf53ff092636433dd4deeb4fc568ac97ad1 Mon Sep 17 00:00:00 2001
From: Eidolon <furyhunter600@gmail.com>
Date: Tue, 8 Nov 2022 19:36:40 -0600
Subject: [PATCH] cmake: disallow in-source builds

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

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 16eb5f9e9..7e1c7a580 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,5 +1,9 @@
 cmake_minimum_required(VERSION 3.14 FATAL_ERROR)
 
+if("${CMAKE_CURRENT_BINARY_DIR}" STREQUAL "${CMAKE_CURRENT_SOURCE_DIR}")
+	message(FATAL_ERROR "In-source builds are blocked. Please build from a separate directory.")
+endif()
+
 # Set up CMAKE path
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/Modules/")
 
-- 
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