The addition of $tcpinfo_* variables has broken the build on Linux
systems with glibc versions prior to 2.7. Fixed this by checking
the existence of "struct tcp_info" members during configuration.
diff --git a/auto/unix b/auto/unix
index 7a8b6ec..4e1f933 100755
--- a/auto/unix
+++ b/auto/unix
@@ -352,6 +352,11 @@
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="socklen_t optlen = sizeof(struct tcp_info);
+ struct tcp_info ti;
+ ti.tcpi_rtt = 0;
+ ti.tcpi_rttvar = 0;
+ ti.tcpi_snd_cwnd = 0;
+ ti.tcpi_rcv_space = 0;
getsockopt(0, IPPROTO_TCP, TCP_INFO, NULL, &optlen)"
. auto/feature
