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-rw-r--r--src/unistd/_POSIX_VERSION.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/src/unistd/_POSIX_VERSION.h b/src/unistd/_POSIX_VERSION.h
new file mode 100644
index 00000000..d9552154
--- /dev/null
+++ b/src/unistd/_POSIX_VERSION.h
@@ -0,0 +1,17 @@
+#include <unistd.h>
+#if _POSIX_C_SOURCE >= 200809L
+#define _POSIX_VERISON (200809L)
+#elif _POSIX_C_SOURCE >= 200112L
+#define _POSIX_VERSION (200112L)
+#elif _POSIX_C_SOURCE >= 199506L
+#define _POSIX_VERSION (199506L)
+#elif _POSIX_C_SOURCE >= 199309L
+#define _POSIX_VERSION (199309L)
+#elif defined _POSIX_C_SOURCE
+#define _POSIX_VERSION (199009L)
+#else
+#define _POSIX_VERSION (198808L)
+#endif
+/*
+POSIX(1)
+*/