From 8bebf33a77d9cb8257624e1cff7c7b06f5ebce08 Mon Sep 17 00:00:00 2001
From: James R <justsomejames2@gmail.com>
Date: Thu, 3 Aug 2023 16:39:17 -0700
Subject: [PATCH] Fix glibc 2.38 compile

glibc 2.38 added strlcpy and strlcat.
---
 src/doomtype.h | 7 ++++++-
 src/string.c   | 2 +-
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/doomtype.h b/src/doomtype.h
index d08850f8e..4c6c1d774 100644
--- a/src/doomtype.h
+++ b/src/doomtype.h
@@ -120,6 +120,11 @@ char *nongnu_strcasestr(const char *in, const char *what);
 #define HAVE_DOSSTR_FUNCS
 #endif
 
+// glibc 2.38: added strlcpy and strlcat to _DEFAULT_SOURCE
+#if defined (__APPLE__) || __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 38)
+#define HAVE_STRLCPY
+#endif
+
 #ifndef HAVE_DOSSTR_FUNCS
 int strupr(char *n); // from dosstr.c
 int strlwr(char *n); // from dosstr.c
@@ -127,7 +132,7 @@ int strlwr(char *n); // from dosstr.c
 
 #include <stddef.h> // for size_t
 
-#ifndef __APPLE__
+#ifndef HAVE_STRLCPY
 size_t strlcat(char *dst, const char *src, size_t siz);
 size_t strlcpy(char *dst, const char *src, size_t siz);
 #endif
diff --git a/src/string.c b/src/string.c
index e430c5cc3..da83eba50 100644
--- a/src/string.c
+++ b/src/string.c
@@ -15,7 +15,7 @@
 #include <string.h>
 #include "doomdef.h"
 
-#if !defined (__APPLE__)
+#ifndef HAVE_STRLCPY
 
 // Like the OpenBSD version, but it doesn't check for src not being a valid
 // C string.