From 51f1a2216a2af0133f56d468cb20815b4cdb480b Mon Sep 17 00:00:00 2001
From: letoh <letoh.tw@gmail.com>
Date: Wed, 15 Jul 2015 13:07:17 +0800
Subject: [PATCH] use _GNU_SOURCE instead of _DEFAULT_SOURCE for older glibc

---
 build/unix/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/build/unix/Makefile b/build/unix/Makefile
index c1df0d0..d7ca532 100644
--- a/build/unix/Makefile
+++ b/build/unix/Makefile
@@ -59,7 +59,7 @@ PFSOURCE = $(PFBASESOURCE) $(IO_SOURCE)
 VPATH = .:$(CSRCDIR):$(CSRCDIR)/posix:$(CSRCDIR)/stdio:$(CSRCDIR)/win32_console:$(CSRCDIR)/win32
 
 XCFLAGS = $(CCOPTS)
-XCPPFLAGS = -DPF_SUPPORT_FP -D_DEFAULT_SOURCE
+XCPPFLAGS = -DPF_SUPPORT_FP -D_GNU_SOURCE
 XLDFLAGS = $(WIDTHOPT)
 
 CPPFLAGS = -I. $(XCPPFLAGS)
-- 
2.20.1