--- libaitio/configure.in	2015/01/19 23:33:17	1.55.2.1
+++ libaitio/configure.in	2016/08/10 13:59:44	1.55.2.3
@@ -1,6 +1,6 @@
 #
 # $Author: misho $
-# $Id: configure.in,v 1.55.2.1 2015/01/19 23:33:17 misho Exp $
+# $Id: configure.in,v 1.55.2.3 2016/08/10 13:59:44 misho Exp $
 #
 AC_INIT(libaitio, 7.3, misho@elwix.org)
 AC_CONFIG_SRCDIR([src/aitio.c])
@@ -12,11 +12,12 @@ ac_cv_func_realloc_0_nonnull="yes"
 # Checks for programs.
 AC_PROG_CC
 AC_PROG_INSTALL
+AC_PROG_RANLIB
 
 AC_CANONICAL_HOST
 AC_CANONICAL_TARGET
 
-AC_CHECK_TOOL(MKDEP, mkdep, no)
+AC_CHECK_TOOL(MKDEP, mkdep, ../mkdep)
 AC_SUBST(MKDEP)
 
 CFLAGS="-Wall -O2 -fPIC ${CFLAGS}"
@@ -37,7 +38,7 @@ AC_C_INLINE
 
 # Checks for library functions.
 AC_FUNC_MMAP
-AC_CHECK_FUNCS([bzero memset munmap])
+AC_CHECK_FUNCS([bzero memset munmap fpurge])
 AC_CHECK_FUNCS([pthread_create pthread_exit])
 AC_CHECK_FUNCS([shm_open shm_unlink])