Index: configure.in
===================================================================
--- configure.in	(revision 77795)
+++ configure.in	(working copy)
@@ -2950,6 +2950,8 @@
 ])
 AC_MSG_RESULT($have_prototypes)
 
+save_cc=$CC
+CC="$CC $BASECFLAGS"
 works=no
 AC_MSG_CHECKING(for variable length prototypes and stdarg.h)
 AC_TRY_COMPILE([
@@ -2969,6 +2971,7 @@
   works=yes
 ])
 AC_MSG_RESULT($works)
+CC=$save_cc
 
 # check for socketpair
 AC_MSG_CHECKING(for socketpair)
@@ -2991,6 +2994,8 @@
 	AC_DEFINE(HAVE_SOCKADDR_SA_LEN, 1, [Define if sockaddr has sa_len member]),
 	AC_MSG_RESULT(no))
 
+save_cc=$CC
+CC="$CC $BASECFLAGS"
 va_list_is_array=no
 AC_MSG_CHECKING(whether va_list is an array)
 AC_TRY_COMPILE([
@@ -3004,6 +3009,7 @@
  va_list_is_array=yes
 ])
 AC_MSG_RESULT($va_list_is_array)
+CC=$save_cc
 
 # sigh -- gethostbyname_r is a mess; it can have 3, 5 or 6 arguments :-(
 AH_TEMPLATE(HAVE_GETHOSTBYNAME_R,