--- mod_authenticache.c	2004-03-06 02:47:03.000000000 +0100
+++ mod_authenticache.c.oden	2005-12-14 05:24:19.000000000 +0100
@@ -85,6 +85,25 @@
 
 #include "defines.h"
 
+#if AP_MODULE_MAGIC_AT_LEAST(20051115, 0)
+/* APR 1.x compatibility */
+#define ap_pstrdup apr_pstrdup
+#define ap_psprintf apr_psprintf
+#define ap_pcalloc apr_pcalloc
+#define ap_table_setn apr_table_setn
+#define ap_register_cleanup apr_pool_cleanup_register
+#define APR_XtOffsetOf APR_OFFSETOF
+#define ap_pstrcat apr_pstrcat
+#define ap_null_cleanup apr_pool_cleanup_null
+#define ap_base64decode apr_base64_decode
+#define ap_base64decode_len apr_base64_decode_len
+#define ap_base64encode apr_base64_encode
+#define ap_base64encode_len apr_base64_encode_len
+#define ap_table_add apr_table_add
+#define ap_vsnprintf apr_vsnprintf
+#define ap_snprintf apr_snprintf
+#define MD5_DIGESTSIZE APR_MD5_DIGESTSIZE
+#endif
 
 module AP_MODULE_DECLARE_DATA authenticache_module;