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|Linker and Libraries Guide Oracle Solaris 11 Information Library|
Note - This appendix describes the original System V Release 4 mapfile language (version 1). Although this mapfile syntax remains supported, the version 2 mapfile language described in Chapter 10, Mapfiles is recommended for new applications.
The link-editor automatically and intelligently maps input sections from relocatable objects to segments in the output file being created. The -M option with an associated mapfile enables you to change the default mapping provided by the link-editor. In addition, new segments can be created, attributes modified, and symbol versioning information can be supplied with the mapfile.
Note - When using a mapfile option, you can easily create an output file that does not execute. The link-editor knows how to produce a correct output file without the use of the mapfile option.
Sample mapfiles provided on the system reside in the /usr/lib/ld directory.