From bf7b4611c4c4152e484c4ce4e909483f6950cbe5 Mon Sep 17 00:00:00 2001
From: papadave <papadave@foxmail.com>
Date: Tue, 9 Jan 2018 12:02:53 +0800
Subject: [PATCH] Move '-D_GNU_SOURCE' to 'configure'

---
 Makefile  | 2 +-
 configure | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index fe5f8c6..87e0937 100644
--- a/Makefile
+++ b/Makefile
@@ -22,7 +22,7 @@ LOBJS = src/nameinfo.o src/version.o \
 
 GENH = src/version.h
 
-CFLAGS  += -Wall -O0 -g -std=c99 -D_GNU_SOURCE -pipe
+CFLAGS  += -Wall -O0 -g -std=c99 -pipe
 NO_AS_NEEDED = -Wl,--no-as-needed
 LIBDL   = -ldl
 LDFLAGS = -fPIC $(NO_AS_NEEDED) $(LIBDL) -lpthread
diff --git a/configure b/configure
index ea7fe2c..0ec6e91 100755
--- a/configure
+++ b/configure
@@ -142,6 +142,9 @@ if [ -z "$CC" ] ; then
 	CC=cc
 fi
 
+check_compile "whether fine to define _GNU_SOURCE" "-D_GNU_SOURCE" \
+'#include <unistd.h>\nint main() { return 0; }'
+
 for i in 700 600; do
 	check_compile "whether _XOPEN_SOURCE=$i is suitable for C99 mode" "-D_XOPEN_SOURCE=$i" "#include <unistd.h>" && break
 done