From b361c29b79cd7a7161ff431350e717fe944caedd Mon Sep 17 00:00:00 2001
From: Adam Wildavsky <adam@tameware.com>
Date: Thu, 25 Jun 2026 16:59:36 -0500
Subject: [PATCH] Enable DDS_AB_STATS via --define=ab_stats=true.

Wire a Bazel config_setting into DDS_LOCAL_DEFINES so AB stats can be
turned on without --cxxopt=-DDDS_AB_STATS; refresh MODULE.bazel.lock.

Co-authored-by: Cursor <cursoragent@cursor.com>
---
 BUILD.bazel                 | 6 ++++++
 CPPVARIABLES.bzl            | 3 +++
 MODULE.bazel.lock           | 2 +-
 library/src/utility/debug.h | 1 +
 4 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/BUILD.bazel b/BUILD.bazel
index d3263ea2..a486b1de 100644
--- a/BUILD.bazel
+++ b/BUILD.bazel
@@ -56,6 +56,12 @@ config_setting(
     define_values = {"scheduler": "true"},
 )
 
+# Enable DDS_AB_STATS via --define=ab_stats=true
+config_setting(
+    name = "ab_stats",
+    define_values = {"ab_stats": "true"},
+)
+
 # Enable DDS_TT_CONTEXT_OWNERSHIP via --define=tt_context_ownership=true
 config_setting(
     name = "tt_context_ownership",
diff --git a/CPPVARIABLES.bzl b/CPPVARIABLES.bzl
index df464e52..f40d5db7 100644
--- a/CPPVARIABLES.bzl
+++ b/CPPVARIABLES.bzl
@@ -84,6 +84,9 @@ DDS_LOCAL_DEFINES = select({
 }) + select({
     "//:tt_reset_debug": ["DDS_DEBUG_TT_RESET"],
     "//conditions:default": [],
+}) + select({
+    "//:ab_stats": ["DDS_AB_STATS"],
+    "//conditions:default": [],
 })
 
 DDS_LINKOPTS = select({
diff --git a/MODULE.bazel.lock b/MODULE.bazel.lock
index c9c77ee2..800cc995 100644
--- a/MODULE.bazel.lock
+++ b/MODULE.bazel.lock
@@ -260,7 +260,7 @@
     },
     "@@emsdk+//:emscripten_deps.bzl%emscripten_deps": {
       "general": {
-        "bzlTransitiveDigest": "reX42Ca3PEP5mFXph0pqMqqqwHJbvykl5X4FHfXD6qg=",
+        "bzlTransitiveDigest": "Dt5IF0PG0xjU5iMLeU6FQ1/xWvBqUgUognNk3r5pJXY=",
         "usagesDigest": "lqS0hMGr6MqmX63BGZOskMFcqzqO53K0UlYFxuE3QSU=",
         "recordedInputs": [
           "REPO_MAPPING:bazel_features+,bazel_features_globals bazel_features++version_extension+bazel_features_globals",
diff --git a/library/src/utility/debug.h b/library/src/utility/debug.h
index fb5623b6..b0635547 100644
--- a/library/src/utility/debug.h
+++ b/library/src/utility/debug.h
@@ -53,6 +53,7 @@
 
 /// @brief Enable AB search statistics (node counts, timing, etc.).
 /// Records alpha-beta search performance metrics for optimization analysis.
+/// Enable via Bazel: --define=ab_stats=true
 // #define DDS_AB_STATS
 #define DDS_AB_STATS_PREFIX "ABstats"