From 8ddf72164b854c53086d3fb36288167d387fcab2 Mon Sep 17 00:00:00 2001
From: Gregory Pakosz <gregory.pakosz@gmail.com>
Date: Mon, 25 Jan 2016 22:11:13 +0100
Subject: [PATCH] _DARWIN_C_SOURCE must be defined when compiling for Mac with
 -std=c99

---
 _gnu-make/Makefile | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/_gnu-make/Makefile b/_gnu-make/Makefile
index ef782c7..e04fea6 100644
--- a/_gnu-make/Makefile
+++ b/_gnu-make/Makefile
@@ -30,11 +30,15 @@ buildir := $(realpath .)/build
 binsubdir := $(platform)-$(architecture)
 bindir := $(prefix)/bin/$(binsubdir)
 
-CFLAGS := -O2 -g -Wall -pedantic -Werror -std=c99 -D_XOPEN_SOURCE=500
+CFLAGS := -O2 -g -Wall -pedantic -Werror -std=c99
 CXXFLAGS := -O2 -g -Wall -pedantic -Werror
 
 ifeq ($(platform),linux)
 override LDFLAGS := $(LDFLAGS) -ldl
+CFLAGS +=-D_XOPEN_SOURCE=500
+endif
+ifeq ($(platform),mac)
+CFLAGS +=-D_DARWIN_C_SOURCE
 endif
 
 ifeq ($(platform),mac)