$NetBSD: patch-ogr_ogrsf__frmts_geojson_libjson_GNUmakefile,v 1.1 2017/03/27 13:52:27 fhajny Exp $

Raise _XOPEN_SOURCE to 600 (for SunOS).

--- ogr/ogrsf_frmts/geojson/libjson/GNUmakefile.orig	2016-07-01 10:22:06.000000000 +0000
+++ ogr/ogrsf_frmts/geojson/libjson/GNUmakefile
@@ -23,7 +23,7 @@ default:	$(O_OBJ:.o=.$(OBJ_EXT))
 
 # -D_XOPEN_SOURCE=500 to enable strdup() definition in C11 mode
 ../../o/%.$(OBJ_EXT):	%.c
-	$(CC) $(CFLAGS) $(CPPFLAGS) -D_XOPEN_SOURCE=500 -c -o $@ $<
+	$(CC) $(CFLAGS) $(CPPFLAGS) -D_XOPEN_SOURCE=600 -c -o $@ $<
 
 clean:
 	rm -f *.o $(O_OBJ)