From ed0891328d6eb4a0f0455eeb3289df75136c8ea5 Mon Sep 17 00:00:00 2001
From: Saleem Abdulrasool <compnerd@compnerd.org>
Date: Tue, 17 Dec 2024 10:19:35 -0800
Subject: [PATCH] build: enable C11 globally and C11 atomics on MSVC

This accounts for local changes to the repository that are unguarded and
undocumented.
---
 CMakeLists.txt | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 85b9557fbc..9dcb4ddea6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -12,6 +12,12 @@ cmake_minimum_required(VERSION 3.24)
 project(LMDB
   LANGUAGES C)
 
+set(CMAKE_C_STANDARD 11)
+
+if("${CMAKE_C_COMPILER_ID}" STREQUAL "MSVC" OR "${CMAKE_C_COMPILER_SIMULATE_ID}" STREQUAL "MSVC")
+  add_compile_options(/experimental:c11atomics)
+endif()
+
 # Set the build artifact directories to ensure that the generated products are
 # colocated and findable for wiring up into the test suites across repositories.
 # This pattern is applied to all Swift and LLVM repositories.