--- third_party/google_benchmark/BUILD.gn.orig	2026-09-25 04:35:37 UTC
+++ third_party/google_benchmark/BUILD.gn
@@ -79,7 +79,8 @@ component("google_benchmark") {
     "BENCHMARK_VERSION=\"1.9.0\"",
   ]
 
-  if (is_linux) {
+  # libpfm4 is built on the Linux perf_event interface.
+  if (is_linux && !is_bsd) {
     # Include hardware performance counter support.
     defines += [ "HAVE_LIBPFM=1" ]
     deps = [ "//third_party/libpfm4" ]