From fc2b7c317f64e7b75f2e0082fe2e0483bde55bf2 Mon Sep 17 00:00:00 2001
From: Natalia <nataliakokoromyti@gmail.com>
Date: Wed, 28 Jan 2026 03:14:20 -0800
Subject: [PATCH] linux_perf: include unistd for POSIX I/O

---
 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 967ccd2f8..40cae3d91 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