From b356c9ac3e69ee7126174f3e0dd5d49510dc4370 Mon Sep 17 00:00:00 2001
From: Akash Levy <akash@silimate.com>
Date: Mon, 26 Jan 2026 23:12:02 -0800
Subject: [PATCH] Add unistd header for Linux

---
 passes/cmds/linux_perf.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/passes/cmds/linux_perf.cc b/passes/cmds/linux_perf.cc
index f57a887fb..bb1339dd8 100644
--- a/passes/cmds/linux_perf.cc
+++ b/passes/cmds/linux_perf.cc
@@ -23,6 +23,7 @@
 
 #include <fcntl.h>
 #include <stdlib.h>
+#include <unistd.h>
 
 USING_YOSYS_NAMESPACE
 PRIVATE_NAMESPACE_BEGIN