Index: src/OFString.m
==================================================================
--- src/OFString.m
+++ src/OFString.m
@@ -19,10 +19,11 @@
 #define _GNU_SOURCE
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <limits.h>
 #include <ctype.h>
 
 #include <sys/stat.h>
 #ifdef HAVE_MADVISE
 # include <sys/mman.h>

Index: src/OFTCPSocket.m
==================================================================
--- src/OFTCPSocket.m
+++ src/OFTCPSocket.m
@@ -24,10 +24,11 @@
 #include <assert.h>
 
 #if !defined(HAVE_THREADSAFE_GETADDRINFO) && !defined(_WIN32)
 # include <netinet/in.h>
 # include <arpa/inet.h>
+# include <netdb.h>
 #endif
 
 #import "OFTCPSocket.h"
 #import "OFString.h"
 #import "OFExceptions.h"