From b8288ac9da5d4a39e28680edcc7dc16f650d5983 Mon Sep 17 00:00:00 2001
From: greg7mdp <greg7mdp@gmail.com>
Date: Sun, 19 Nov 2023 18:42:14 -0500
Subject: [PATCH] Fix compilation issue

---
 include/gtl/phmap.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/gtl/phmap.hpp b/include/gtl/phmap.hpp
index 5d7daca..8a73c90 100644
--- a/include/gtl/phmap.hpp
+++ b/include/gtl/phmap.hpp
@@ -3085,7 +3085,7 @@ class LockableImpl<absl::Mutex> : public AbslMutex {
 //         Microsoft SRWLOCK support (read and write lock support)
 //         use: `phmap::srwlock` instead of `std::mutex`
 // --------------------------------------------------------------------------
-#if defined(_MSVC_LANG) && defined(SRWLOCK_INIT)
+#if defined(_MSVC_LANG) && (defined(SRWLOCK_INIT) || defined(_SYNCHAPI_H_))
 
 class srwlock {
     SRWLOCK _lock;