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/MAP (Generate Mapfile)



A user-specified name for the mapfile. It replaces the default name.


The /MAP option tells the linker to create a mapfile.

By default, the linker names the mapfile with the base name of the program and the extension .map. The optional filename allows you to override the default name for a mapfile.

A mapfile is a text file that contains the following information about the program being linked:

  • The module name, which is the base name of the file

  • The timestamp from the program file header (not from the file system)

  • A list of groups in the program, with each group's start address (as section:offset), length, group name, and class

  • A list of public symbols, with each address (as section:offset), symbol name, flat address, and .obj file where the symbol is defined

  • The entry point (as section:offset)

The /MAPINFO option specifies additional information to be included in the mapfile.

To set this linker option in the Visual Studio development environment

  1. Open the project's Property Pages dialog box. For details, see Set C++ compiler and build properties in Visual Studio.

  2. Select the Configuration Properties > Linker > Debug property page.

  3. Modify the Generate Map File property.

To set this linker option programmatically

  1. See GenerateMapFile and MapFileName.

See also

MSVC linker reference
MSVC Linker Options