From 2246d8d848eb18a8e7acf51efe31db6a4adfbeae Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: Sat, 26 May 2018 09:44:43 -0400
Subject: project: update the -XOPEN_SOURCE requirement to reflect -std=c99.

---
 README | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'README')

diff --git a/README b/README
index d3cfc33..ff2e1cd 100644
--- a/README
+++ b/README
@@ -45,7 +45,7 @@ effort, ease of customization, and long-term maintenance.
 - a C toolchain, consisting of
     - a C compiler such as gcc, clang, or [cparser];
     - the compiler should support -std=c99;
-    - the system's libc should support -D_XOPEN_SOURCE=500.
+    - the system's libc should support -D_XOPEN_SOURCE=600.
 
 ## Usage
 
-- 
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