Ack! It never defined HAVE_GETHOSTBYNAME_R so that code was never tested!
diff --git a/configure.in b/configure.in
index 12dcd5f..3c7db27 100644
--- a/configure.in
+++ b/configure.in
@@ -793,6 +793,7 @@
(void) gethostbyname_r(name, he, buffer, buflen, &res, &h_errnop)
], [
+ AC_DEFINE(HAVE_GETHOSTBYNAME_R)
AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG)
AC_MSG_RESULT(yes)
], [
@@ -809,6 +810,7 @@
(void) gethostbyname_r(name, he, buffer, buflen, &h_errnop)
], [
+ AC_DEFINE(HAVE_GETHOSTBYNAME_R)
AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG)
AC_MSG_RESULT(yes)
], [
@@ -823,6 +825,7 @@
(void) gethostbyname_r(name, he, &data);
], [
+ AC_DEFINE(HAVE_GETHOSTBYNAME_R)
AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG)
AC_MSG_RESULT(yes)
], [
@@ -837,6 +840,7 @@
AC_SUBST(HAVE_GETHOSTBYNAME_R_6_ARG)
AC_SUBST(HAVE_GETHOSTBYNAME_R_5_ARG)
AC_SUBST(HAVE_GETHOSTBYNAME_R_3_ARG)
+AC_SUBST(HAVE_GETHOSTBYNAME_R)
AC_SUBST(HAVE_GETHOSTBYNAME)
# checks for system services