From 7189e4e26f3da36ed9d373f77a9f51a36fc8ddaf Mon Sep 17 00:00:00 2001
From: luckytyphlosion <10688458+luckytyphlosion@users.noreply.github.com>
Date: Thu, 3 Jun 2021 21:05:56 -0400
Subject: [PATCH] Fix build on macos.

Needs <cerrno> include in tools/preproc/c_file.cpp
---
 tools/preproc/c_file.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/preproc/c_file.cpp b/tools/preproc/c_file.cpp
index f7ca4365cc..17a08cc9f7 100644
--- a/tools/preproc/c_file.cpp
+++ b/tools/preproc/c_file.cpp
@@ -24,6 +24,7 @@
 #include <string>
 #include <memory>
 #include <cstring>
+#include <cerrno>
 #include "preproc.h"
 #include "c_file.h"
 #include "char_util.h"