From decde27a8de0953d402df2db3716543b213b9755 Mon Sep 17 00:00:00 2001
From: Jakob Kaivo <jkk@ung.org>
Date: Sat, 9 Feb 2019 16:48:54 -0500
Subject: add POSIX.2 identifiers

---
 src/unistd/_POSIX2_C_VERSION.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 src/unistd/_POSIX2_C_VERSION.c

(limited to 'src/unistd/_POSIX2_C_VERSION.c')

diff --git a/src/unistd/_POSIX2_C_VERSION.c b/src/unistd/_POSIX2_C_VERSION.c
new file mode 100644
index 00000000..44c9a0ba
--- /dev/null
+++ b/src/unistd/_POSIX2_C_VERSION.c
@@ -0,0 +1,20 @@
+#include <unistd.h>
+
+#if (defined _POSIX_C_SOURCE)
+#if _POSIX_C_SOURCE >= 200809L
+#define _POSIX2_C_VERSION                                              (200809L)
+#elif _POSIX_C_SOURCE >= 200112L
+#define _POSIX2_C_VERSION                                              (200112L)
+#elif _POSIX_C_SOURCE >= 199506L
+#define _POSIX2_C_VERSION                                              (199506L)
+#elif _POSIX_C_SOURCE >= 2
+#define _POSIX2_C_VERSION                                              (199209L)
+#else
+#undef _POSIX2_C_VERSION
+#endif
+#endif
+
+/*
+POSIX(2)
+*/
+
-- 
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