From a5d6b2283834422a9fa9e79b5c7ad9b932b52568 Mon Sep 17 00:00:00 2001
From: Calvin Rose <calsrose@gmail.com>
Date: Fri, 21 Jun 2024 17:17:22 -0500
Subject: [PATCH] Check for __GLIBC__ instead of _GNU_SOURCE

musl doesn't obey this behavior.
---
 src/core/util.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/core/util.c b/src/core/util.c
index 4bb37abc..6cb5676e 100644
--- a/src/core/util.c
+++ b/src/core/util.c
@@ -972,7 +972,7 @@ const char *janet_strerror(int e) {
 #ifdef JANET_WINDOWS
     /* Microsoft strerror seems sane here and is thread safe by default */
     return strerror(e);
-#elif defined(_GNU_SOURCE)
+#elif defined(__GLIBC__)
     /* See https://linux.die.net/man/3/strerror_r */
     return strerror_r(e, janet_vm.strerror_buf, sizeof(janet_vm.strerror_buf));
 #else