From 0868e9c92ca3a26e2b64cb13ee3bcdb8e39da979 Mon Sep 17 00:00:00 2001
From: "Gary E. Miller" <gem@rellim.com>
Date: Tue, 16 Aug 2016 12:58:25 -0700
Subject: If you specify XOPEN version, you must specify POSIX version.

This fixes 32-bit Gentoo on RasPi.

All regression tests pass.
---
 driver_zodiac.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'driver_zodiac.c')

diff --git a/driver_zodiac.c b/driver_zodiac.c
index b14ffa63..e1ce407e 100644
--- a/driver_zodiac.c
+++ b/driver_zodiac.c
@@ -13,6 +13,8 @@
 /* if we insisnt on C99, then we need this to get M_LN2 from math.h */
 /* 500 means X/Open 1995 */
 #define _XOPEN_SOURCE 500
+/* round() needs  _POSIX_C_SOURCE >= 200112L */
+#define  _POSIX_C_SOURCE 200112L
 
 #include <stdio.h>
 #include <stdbool.h>
-- 
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