From 5c57f232d8fb084627a6ef1a01d7eac25fdd9d10 Mon Sep 17 00:00:00 2001
From: Fabian Meumertzheim <fabian@meumertzhe.im>
Date: Tue, 24 Feb 2026 18:56:43 +0100
Subject: [PATCH] Recognize `clang` targeting Windows as "MinGW like"

This is necessary to get abseil to build with https://github.com/cerisier/toolchains_llvm_bootstrapped. The old mappings for MinGW are arguably not semantically correct as MinGW is the runtime/sysroot, not the compiler, but are left in place for backwards compatibility.
---
 absl/BUILD.bazel | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/absl/BUILD.bazel b/absl/BUILD.bazel
index 2a25ac64559..43714ad3c53 100644
--- a/absl/BUILD.bazel
+++ b/absl/BUILD.bazel
@@ -52,11 +52,23 @@ config_setting(
     visibility = [":__subpackages__"],
 )
 
+config_setting(
+    name = "windows-clang",
+    constraint_values = [
+        "@platforms//os:windows",
+    ],
+    flag_values = {
+        "@bazel_tools//tools/cpp:compiler": "clang",
+    },
+    visibility = [":__subpackages__"],
+)
+
 selects.config_setting_group(
     name = "mingw_compiler",
     match_any = [
         ":mingw_unspecified_compiler",
         ":mingw-gcc_compiler",
+        ":windows-clang",
     ],
     visibility = [":__subpackages__"],
 )