From 0287faeb13f7c5e15b58ea3cea560cd081d4bd85 Mon Sep 17 00:00:00 2001
From: Gleb Mazovetskiy <glex.spb@gmail.com>
Date: Mon, 10 Jan 2022 10:39:55 +0000
Subject: [PATCH] Work around MSVC+CMake+LTO bug

Disables tests in MSVC LTO configurations. Refs #3778
---
 CMakeLists.txt | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index a08b694b0..fc37ec725 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -110,6 +110,13 @@ else()
 endif()
 set(PROJECT_VERSION_WITH_SUFFIX "${PROJECT_VERSION}$<$<CONFIG:Debug>:-${VERSION_SUFFIX}>")
 
+if(MSVC AND NOT CMAKE_BUILD_TYPE STREQUAL "Debug" AND NOT DISABLE_LTO)
+  # Work around MSVC + CMake bug when LTO is enabled.
+  # See https://github.com/diasurgical/devilutionX/issues/3778
+  # and https://gitlab.kitware.com/cmake/cmake/-/issues/23035
+  set(BUILD_TESTING OFF)
+endif()
+
 # This built-in CMake module adds a BUILD_TESTING option (ON by default).
 # Must be included in the top-level `CMakeLists.txt` after calling `project`.
 # Because we must include `VcPkgManifestFeatures` before the `project` call,