hi satya, Map file generally generated by linker. This specifies the memory map generated by linker. Generally map file does not have any specific format such as coff or elf .. It is a human readable file and the contents of this file are linker dependent. This file contains memory addresses and sizes of varios sections, section types(e.g. noload section etc), thanx bansidhar -----Original Message----- From: Satya [mailto:satyag@xxxxxxxxx] Sent: Tuesday, September 23, 2003 5:15 PM To: gcc-help@xxxxxxxxxxx Subject: what are map files Hello, Could any one tell me what is the map file format and where they are used? These are getting generated when i compile my dlls. Your help will be highly appreciated. Regards Cutti __________________________________ Do you Yahoo!? Yahoo! SiteBuilder - Free, easy-to-use web site design software http://sitebuilder.yahoo.com