X-Git-Url: https://git.distorted.org.uk/~mdw/adns/blobdiff_plain/29cf9c448804d3001a927388e2ae340a35c04486..b15e8e8db8743cba797b5fef165507dedebc372b:/configure.in

diff --git a/configure.in b/configure.in
index 7a7a59d..4af8606 100644
--- a/configure.in
+++ b/configure.in
@@ -19,8 +19,40 @@
 AC_INIT(src/adns.h)
 AC_CONFIG_HEADER(src/config.h)
 AC_PROG_CC
+AC_PROG_CPP
 AC_PROG_RANLIB
-AC_CHECK_LIB(socket,socket)
+
+AC_CHECK_FUNCS(poll)
+ADNS_C_GETFUNC(socket,socket)
+ADNS_C_GETFUNC(inet_ntoa,nsl)
+
+AC_MSG_CHECKING(for INADDR_LOOPBACK)
+AC_CACHE_VAL(adns_cv_decl_inaddrloopback,[
+ AC_TRY_COMPILE([
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+ ],[
+  INADDR_LOOPBACK;
+ ],
+ adns_cv_decl_inaddrloopback=yes,
+ adns_cv_decl_inaddrloopback=no)])
+if test "$adns_cv_decl_inaddrloopback" = yes; then
+ AC_MSG_RESULT(found)
+else
+ AC_MSG_RESULT([not in standard headers, urgh...])
+ AC_CHECK_HEADER(rpc/types.h,[
+  AC_DEFINE(HAVEUSE_RPCTYPES_H)
+ ],[
+  AC_MSG_ERROR([cannot find INADDR_LOOPBACK or rpc/types.h])
+ ])
+fi
+
+ADNS_C_GETFUNC(inet_aton,resolv,[
+ LIBS="-lresolv $LIBS";
+ AC_MSG_WARN([inet_aton is in libresolv, urgh.  Must use -lresolv.])
+])
+
 ADNS_C_GCCATTRIB
 
 AC_SUBST(WARNS)