From 636450ab7b0b19d7531b2d30726ce583beb10cfe Mon Sep 17 00:00:00 2001
From: Ryan Blue <ryanzblue@gmail.com>
Date: Mon, 15 Jul 2024 20:19:07 -0400
Subject: [PATCH] [build] Disable std::mutex constexpr constructor on Windows
 (#6791)

We will plan to re-enable this after we release an installer with an updated runtime.
---
 cmake/modules/CompileWarnings.cmake | 5 +++++
 shared/config.gradle                | 5 +++++
 2 files changed, 10 insertions(+)

diff --git a/cmake/modules/CompileWarnings.cmake b/cmake/modules/CompileWarnings.cmake
index 94d952ce5d..432c810ca9 100644
--- a/cmake/modules/CompileWarnings.cmake
+++ b/cmake/modules/CompileWarnings.cmake
@@ -54,4 +54,9 @@ macro(wpilib_target_warnings target)
     )
         target_compile_options(${target} PRIVATE -gz=zlib)
     endif()
+
+    # Disable std::mutex constexpr constructor on MSVC
+    if(MSVC)
+        target_compile_options(${target} PRIVATE /D_DISABLE_CONSTEXPR_MUTEX_CONSTRUCTOR)
+    endif()
 endmacro()
diff --git a/shared/config.gradle b/shared/config.gradle
index 6c4f3942b4..1d184295af 100644
--- a/shared/config.gradle
+++ b/shared/config.gradle
@@ -41,6 +41,11 @@ nativeUtils.platformConfigs.each {
   }
 }
 
+// Disable std::mutex constexpr constructor on MSVC
+nativeUtils.platformConfigs.named(nativeUtils.wpi.platforms.windowsx64).configure {
+    it.cppCompiler.args.add("/D_DISABLE_CONSTEXPR_MUTEX_CONSTRUCTOR")
+}
+
 nativeUtils.platformConfigs.linuxathena.linker.args.add("-Wl,--fatal-warnings")
 
 model {