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-rw-r--r--include/ouroboros/endian.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/ouroboros/endian.h b/include/ouroboros/endian.h
index 16200028..873aff73 100644
--- a/include/ouroboros/endian.h
+++ b/include/ouroboros/endian.h
@@ -24,7 +24,7 @@
#ifndef OUROBOROS_ENDIAN_H
#define OUROBOROS_ENDIAN_H
-#if defined(__linux__) || defined(__CYGWIN__)
+#if defined(__linux__) || defined(__CYGWIN__) || defined(__MACH__)
#ifndef _BSD_SOURCE
#define _BSD_SOURCE