carbon-lang/bazel/google_benchmark/0001-Use-libpfm-by-default-on-supported-platforms.patch

From 4110acfa9a131a5a93ae4caef26bd34dd5509155 Mon Sep 17 00:00:00 2001
From: Chandler Carruth <chandlerc@gmail.com>
Date: Sat, 13 Jan 2024 02:58:47 -0800
Subject: [PATCH] Use libpfm by default on supported platforms.

---
 BUILD.bazel | 26 ++++++++++++++++++--------
 1 file changed, 18 insertions(+), 8 deletions(-)

diff --git a/BUILD.bazel b/BUILD.bazel
index 60d31d2..c313c8a 100644
--- a/BUILD.bazel
+++ b/BUILD.bazel
@@ -1,3 +1,5 @@
+load("@bazel_skylib//lib:selects.bzl", "selects")
+
 licenses(["notice"])

 config_setting(
@@ -24,12 +26,20 @@ config_setting(
     visibility = ["//visibility:public"],
 )

-config_setting(
-    name = "perfcounters",
-    define_values = {
-        "pfm": "1",
-    },
-    visibility = [":__subpackages__"],
+selects.config_setting_group(
+    name = "aarch64_or_x86_64",
+    match_any = [
+        "@platforms//cpu:aarch64",
+        "@platforms//cpu:x86_64",
+    ],
+)
+
+selects.config_setting_group(
+    name = "linux_aarch64_or_x86_64",
+    match_all = [
+        "@platforms//os:linux",
+        ":aarch64_or_x86_64",
+    ],
 )

 cc_library(
@@ -62,11 +72,11 @@ cc_library(
     defines = [
         "BENCHMARK_STATIC_DEFINE",
     ] + select({
-        ":perfcounters": ["HAVE_LIBPFM"],
+        ":linux_aarch64_or_x86_64": ["HAVE_LIBPFM"],
         "//conditions:default": [],
     }),
     deps = select({
-        ":perfcounters": ["@libpfm//:libpfm"],
+        ":linux_aarch64_or_x86_64": ["@libpfm//:libpfm"],
         "//conditions:default": [],
     }),
 )
--
2.43.0