From c4fa9cb603494699d4ffbf20f69e88c27b26192a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mats=20Webj=C3=B6rn?= <mats.webjorn@netinsight.net>
Date: Fri, 30 Sep 2016 13:27:04 +0200
Subject: [PATCH] Enable build on Alpine Linux

---
 include/spdlog/details/os.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/spdlog/details/os.h b/include/spdlog/details/os.h
index 6d27bc39..c7b2f45b 100644
--- a/include/spdlog/details/os.h
+++ b/include/spdlog/details/os.h
@@ -344,7 +344,7 @@ inline std::string errno_str(int err_num)
         return "Unkown error";
 
 #elif defined(__FreeBSD__) || defined(__APPLE__) || defined(ANDROID) || \
-      ((_POSIX_C_SOURCE >= 200112L) && ! _GNU_SOURCE) // posix version
+      ((_POSIX_C_SOURCE >= 200112L) && ! _GNU_SOURCE) || !defined(__GLIBC__) // posix version
 
     if (strerror_r(err_num, buf, buf_size) == 0)
         return std::string(buf);