From ca354d9e2e6cddb698f727b282c22c1f4a7a3cf5 Mon Sep 17 00:00:00 2001
From: Matthias Schiffer <mschiffer@universe-factory.net>
Date: Thu, 8 Aug 2013 23:45:36 +0200
Subject: Check for AI_ADDRCONFIG

---
 CMakeLists.txt | 12 +++++++++++-
 config.h.in    |  1 +
 src/resolve.c  |  5 ++++-
 3 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index c9c76d5..0fa9d72 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -26,17 +26,27 @@ else()
 endif()
 
 
+include(CheckCSourceCompiles)
 include(CheckPrototypeDefinition)
 include(CheckTypeSize)
 set(CMAKE_EXTRA_INCLUDE_FILES "netinet/if_ether.h")
 set(CMAKE_REQUIRED_DEFINITIONS "-D_GNU_SOURCE")
 
+check_c_source_compiles("
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
+
+int main() {
+	return AI_ADDRCONFIG;
+}
+" HAVE_AI_ADDRCONFIG)
+
 check_prototype_definition("get_current_dir_name" "char *get_current_dir_name(void)" "NULL" "unistd.h" HAVE_GET_CURRENT_DIR_NAME)
 
 check_type_size("struct ethhdr" SIZEOF_ETHHDR)
 string(COMPARE NOTEQUAL "${SIZEOF_ETHHDR}" "" HAVE_ETHHDR)
 
-
 set(USE_BINDTODEVICE ${LINUX})
 set(USE_PMTU ${LINUX})
 set(USE_PKTINFO ${LINUX})
diff --git a/config.h.in b/config.h.in
index cd71d3d..5f41bde 100644
--- a/config.h.in
+++ b/config.h.in
@@ -27,6 +27,7 @@
 #ifndef _FASTD_CONFIG_H_
 #define _FASTD_CONFIG_H_
 
+#cmakedefine HAVE_AI_ADDRCONFIG
 #cmakedefine HAVE_ETHHDR
 #cmakedefine HAVE_GET_CURRENT_DIR_NAME
 
diff --git a/src/resolve.c b/src/resolve.c
index fea0cff..541006d 100644
--- a/src/resolve.c
+++ b/src/resolve.c
@@ -53,7 +53,10 @@ static void* resolve_peer(void *varg) {
 		.ai_family = arg->constraints.sa.sa_family,
 		.ai_socktype = SOCK_DGRAM,
 		.ai_protocol = IPPROTO_UDP,
-		.ai_flags = AI_NUMERICSERV | AI_ADDRCONFIG,
+		.ai_flags = AI_NUMERICSERV
+#ifdef HAVE_AI_ADDRCONFIG
+		| AI_ADDRCONFIG
+#endif
 	};
 
 	gai_ret = getaddrinfo(arg->hostname, portstr, &hints, &res);
-- 
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