Fix issue #317 (Build error on raspberry pi)

817371b2 · gabime · 87ddb9a6 · 817371b2
Commit 817371b2 authored Nov 18, 2016 by gabime
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include/spdlog/details/os.h include/spdlog/details/os.h +1 -1

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--- 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) && ! defined(_GNU_SOURCE)) // posix version
    if (strerror_r(err_num, buf, buf_size) == 0)
        return std::string(buf);