diff -Naur mapm_4.9.5.orig/m_apm.h mapm_4.9.5/m_apm.h
--- mapm_4.9.5.orig/m_apm.h	2009-03-02 11:55:18.914770612 +0100
+++ mapm_4.9.5/m_apm.h	2009-03-02 11:56:19.585923499 +0100
@@ -159,6 +159,8 @@
 #ifndef M__APM__INCLUDED
 #define M__APM__INCLUDED
 
+#include <stdlib.h>
+
 #ifdef __cplusplus
 /* Comment this line out if you've compiled the library as C++. */
 #define APM_CONVERT_FROM_C