Get rid of aclocal warning:
/usr/share/aclocal/aalib.m4:12: warning: underquoted definition of AM_PATH_AALIB
--- aalib-1.4.0/aalib.m4
+++ aalib-1.4.0/aalib.m4
@@ -11,3 +11,3 @@
 dnl
-AC_DEFUN(AM_PATH_AALIB,
+AC_DEFUN([AM_PATH_AALIB],
 [dnl