From 0086927ee1c7ff065ca144f9ee2731286020453f Mon Sep 17 00:00:00 2001
From: Bryan Steele <brynet@gmail.com>
Date: Sat, 2 Nov 2019 19:16:36 -0400
Subject: [PATCH] Upstream support for OpenBSD. (#414)

---
 CMakeLists.txt    | 4 +++-
 SourceS/miniwin.h | 2 +-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2e4d786fc..edce03ce6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -62,8 +62,10 @@ endif()
 
 list(APPEND CMAKE_MODULE_PATH "${DevilutionX_SOURCE_DIR}/CMake")
 
-if(${CMAKE_SYSTEM_NAME} STREQUAL FreeBSD)
+if(${CMAKE_SYSTEM_NAME} STREQUAL FreeBSD OR ${CMAKE_SYSTEM_NAME} STREQUAL OpenBSD)
   set(ASAN OFF)
+  set(UBSAN OFF)
+  add_definitions(-D_BSD_SOURCE)
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DO_LARGEFILE=0 -Dstat64=stat -Dlstat64=lstat -Dlseek64=lseek -Doff64_t=off_t -Dfstat64=fstat -Dftruncate64=ftruncate")
 endif()
 
diff --git a/SourceS/miniwin.h b/SourceS/miniwin.h
index a2d0079f4..94b5aa17a 100644
--- a/SourceS/miniwin.h
+++ b/SourceS/miniwin.h
@@ -3,7 +3,7 @@
 #include <ctype.h>
 #include <math.h>
 // work around https://reviews.llvm.org/D51265
-#if defined(__APPLE__) || defined(__FreeBSD__)
+#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__OpenBSD__)
 #include "macos_stdarg.h"
 #else
 #include <stdarg.h>