diff --git a/cf/aix.m4 b/cf/aix.m4
new file mode 100644
index 000000000..c31d5ad43
--- /dev/null
+++ b/cf/aix.m4
@@ -0,0 +1,22 @@
+AC_DEFUN(KRB_AIX,[
+AM_CONDITIONAL(AIX, test "$aix" != no)dnl
+AM_CONDITIONAL(AIX4, test "$aix" = 4)
+aix_dynamic_afs=yes
+AM_CONDITIONAL(AIX_DYNAMIC_AFS, test "$aix_dynamic_afs" = yes)dnl
+
+AC_FIND_FUNC_NO_LIBS(dlopen, dl)
+
+if test "$aix" != no; then
+	if test "$aix_dynamic_afs" = yes; then
+		if test "$ac_cv_funclib_dlopen" = yes; then
+			AIX_EXTRA_KAFS=
+		elif test "$ac_cv_funclib_dlopen" != no; then
+			AIX_EXTRA_KAFS="$ac_cv_funclib_dlopen"
+		else
+			AIX_EXTRA_KAFS=-lld
+		fi
+	else
+		AIX_EXTRA_KAFS=
+	fi
+fi
+])
\ No newline at end of file