From 5a2cb5d8de1eb92d39699f5e2aeb94d3cae4f2b0 Mon Sep 17 00:00:00 2001
From: ahgamut <ahgamut@gmail.com>
Date: Tue, 25 Oct 2022 08:13:09 +0530
Subject: [PATCH] check existence of IFNAMSIZ

IFNAMSIZ is defined in:

- libc/sock/if.h
- libc/sock/struct/ifreq.h

we add a check in the latter to avoid a complaint when using the
amalgamated header.
---
 libc/sock/struct/ifreq.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libc/sock/struct/ifreq.h b/libc/sock/struct/ifreq.h
index 3a3bd7209..9424276e8 100644
--- a/libc/sock/struct/ifreq.h
+++ b/libc/sock/struct/ifreq.h
@@ -5,7 +5,9 @@
 COSMOPOLITAN_C_START_
 
 #define IF_NAMESIZE 16
+#ifndef IFNAMSIZ
 #define IFNAMSIZ    IF_NAMESIZE
+#endif
 
 struct ifreq {
   union {