From 53e85b8dac3fa6620be0fd09424fb7433715fef5 Mon Sep 17 00:00:00 2001
From: Stephen Gutekanst <stephen@hexops.com>
Date: Sun, 13 Feb 2022 16:42:31 -0700
Subject: [PATCH] gpu-dawn: prevent abseil from using pthread on Windows

Helps hexops/mach#86

Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
---
 gpu-dawn/build.zig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gpu-dawn/build.zig b/gpu-dawn/build.zig
index e7545931..c2455124 100644
--- a/gpu-dawn/build.zig
+++ b/gpu-dawn/build.zig
@@ -1024,6 +1024,7 @@ fn buildLibAbseilCpp(b: *Builder, step: *std.build.LibExeObjStep, options: Optio
         include("libs/dawn"),
         include("libs/dawn/third_party/abseil-cpp"),
     }) catch unreachable;
+    if (target.os.tag == .windows) flags.append("-DABSL_FORCE_THREAD_IDENTITY_MODE=2") catch unreachable;
 
     // absl
     appendLangScannedSources(b, lib, options, .{