[nginx] Core: guard use of AI_ADDRCONFIG.

[Ruslan Ermilov]

details:   http://hg.nginx.org/nginx/rev/0300d97c6084
branches:  
changeset: 5314:0300d97c6084
user:      Ruslan Ermilov <ru at nginx.com>
date:      Mon Aug 05 13:44:56 2013 +0400
description:
Core: guard use of AI_ADDRCONFIG.

Some systems (notably NetBSD and OpenBSD) lack AI_ADDRCONFIG support.

Reported by Piotr Sikora.

diffstat:

 auto/unix           |  8 ++------
 src/core/ngx_inet.c |  2 ++
 2 files changed, 4 insertions(+), 6 deletions(-)

diffs (30 lines):

diff -r 1fe5f7fb6ced -r 0300d97c6084 auto/unix
--- a/auto/unix	Mon Aug 05 11:40:33 2013 +0400
+++ b/auto/unix	Mon Aug 05 13:44:56 2013 +0400
@@ -788,11 +788,7 @@ ngx_feature_incs="#include <sys/types.h>
                   #include <netdb.h>"
 ngx_feature_path=
 ngx_feature_libs=
-ngx_feature_test='struct addrinfo hints, *res;
-                  hints.ai_family = AF_UNSPEC;
-                  hints.ai_socktype = SOCK_STREAM;
-                  hints.ai_flags = AI_ADDRCONFIG;
-                  if (getaddrinfo("localhost", NULL, &hints, &res) != 0)
-                      return 1;
+ngx_feature_test='struct addrinfo *res;
+                  if (getaddrinfo("localhost", NULL, NULL, &res) != 0) return 1;
                   freeaddrinfo(res)'
 . auto/feature
diff -r 1fe5f7fb6ced -r 0300d97c6084 src/core/ngx_inet.c
--- a/src/core/ngx_inet.c	Mon Aug 05 11:40:33 2013 +0400
+++ b/src/core/ngx_inet.c	Mon Aug 05 13:44:56 2013 +0400
@@ -963,7 +963,9 @@ ngx_inet_resolve_host(ngx_pool_t *pool, 
     ngx_memzero(&hints, sizeof(struct addrinfo));
     hints.ai_family = AF_UNSPEC;
     hints.ai_socktype = SOCK_STREAM;
+#ifdef AI_ADDRCONFIG
     hints.ai_flags = AI_ADDRCONFIG;
+#endif
 
     if (getaddrinfo((char *) host, NULL, &hints, &res) != 0) {
         u->err = "host not found";