From ee5e2d89b63d357ca779a72d638d8f51e6bc30d0 Mon Sep 17 00:00:00 2001
From: Bernardo Sulzbach <bernardo@bernardosulzbach.com>
Date: Sat, 7 Sep 2024 10:36:21 +0200
Subject: [PATCH] Avoid redefining WIN32_LEAN_AND_MEAN on Windows

This causes warnings for people integrating cppcoro's sources in their projects without using your CMakeLists.

Other files already do the #ifndef check.
---
 lib/auto_reset_event.cpp | 4 +++-
 lib/spin_wait.cpp        | 4 +++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/lib/auto_reset_event.cpp b/lib/auto_reset_event.cpp
index 66c04e2d..f0698a08 100644
--- a/lib/auto_reset_event.cpp
+++ b/lib/auto_reset_event.cpp
@@ -6,7 +6,9 @@
 #include "auto_reset_event.hpp"
 
 #if CPPCORO_OS_WINNT
-# define WIN32_LEAN_AND_MEAN
+# ifndef WIN32_LEAN_AND_MEAN
+#  define WIN32_LEAN_AND_MEAN
+# endif
 # include <windows.h>
 # include <system_error>
 #endif
diff --git a/lib/spin_wait.cpp b/lib/spin_wait.cpp
index 47263277..a74a4c44 100644
--- a/lib/spin_wait.cpp
+++ b/lib/spin_wait.cpp
@@ -9,7 +9,9 @@
 #include <thread>
 
 #if CPPCORO_OS_WINNT
-# define WIN32_LEAN_AND_MEAN
+# ifndef WIN32_LEAN_AND_MEAN
+#  define WIN32_LEAN_AND_MEAN
+# endif
 # include <windows.h>
 #endif