From cdda6733389b397baeca29fd1ca71620fee8ae78 Mon Sep 17 00:00:00 2001
From: Martin Griffin <martinrgriffin@gmail.com>
Date: Tue, 9 Jul 2024 07:59:09 +0100
Subject: [PATCH] cerrno

---
 tools/preproc/io.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/preproc/io.cpp b/tools/preproc/io.cpp
index 1572072cb4e4..321676180d70 100644
--- a/tools/preproc/io.cpp
+++ b/tools/preproc/io.cpp
@@ -1,6 +1,7 @@
 #include "preproc.h"
 #include "io.h"
 #include <string>
+#include <cerrno>
 #include <cstring>
 
 char *ReadFileToBuffer(const char *filename, bool isStdin, long *size)