From 1a5ee113775cb753cb07a603024b7b8cc98f351a Mon Sep 17 00:00:00 2001
From: Justine Tunney <jtunney@gmail.com>
Date: Tue, 28 Mar 2023 10:36:25 -0700
Subject: [PATCH] Restore old -std= flags

Getting rid of them fixed GA Ubuntu, but broke GA MacOS. Let's try a
different strategy.
---
 Makefile | 4 ++--
 mmap.h   | 4 ++++
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 8f94c77af..044e7d7fe 100644
--- a/Makefile
+++ b/Makefile
@@ -30,8 +30,8 @@ endif
 # Compile flags
 #
 
-CFLAGS   = -I.              -O3 -DNDEBUG -fPIC
-CXXFLAGS = -I. -I./examples -O3 -DNDEBUG -fPIC
+CFLAGS   = -I.              -O3 -DNDEBUG -std=c11   -fPIC
+CXXFLAGS = -I. -I./examples -O3 -DNDEBUG -std=c++11 -fPIC
 LDFLAGS  =
 
 # OS specific
diff --git a/mmap.h b/mmap.h
index fd9a25963..8bdd662d3 100644
--- a/mmap.h
+++ b/mmap.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+
 #include <stddef.h>
 #include <stdint.h>
 #include <fcntl.h>