--- Python-3.5.1-orig/Modules/socketmodule.c	2015-12-07 02:39:10 +0100
+++ Python-3.5.1-aix/Modules/socketmodule.c	2016-06-22 14:43:56 +0200
@@ -163,12 +163,14 @@
 #endif
 
 #ifdef HAVE_GETHOSTBYNAME_R
-# if defined(_AIX)
+# if defined(_AIX) && !defined(_LINUX_SOURCE_COMPAT)
 #  define HAVE_GETHOSTBYNAME_R_3_ARG
 # elif defined(__sun) || defined(__sgi)
 #  define HAVE_GETHOSTBYNAME_R_5_ARG
 # elif defined(linux)
 /* Rely on the configure script */
+# elif defined(_LINUX_SOURCE_COMPAT)
+#  define HAVE_GETHOSTBYNAME_R_6_ARG
 # else
 #  undef HAVE_GETHOSTBYNAME_R
 # endif