(configure.info.gz) Multilibs in gcc

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(configure.info.gz) Multilibs

(configure.info.gz) Multilibs in Target Libraries

 
 8.1 Multilibs in gcc
 ====================
 
 In gcc, multilibs are defined by setting the variable
 `MULTILIB_OPTIONS' in the target `Makefile' fragment.  Several other
 `MULTILIB' variables may also be defined there.   The Target
 Makefile Fragment (gcc)Target Fragment.
 
    If you have built gcc, you can see what multilibs it uses by running
 it with the `-print-multi-lib' option.  The output `.;' means that no
 multilibs are used.  In general, the output is a sequence of lines, one
 per multilib.  The first part of each line, up to the `;', is the name
 of the multilib directory.  The second part is a list of compiler
 options separated by `@' characters.
 
    Multilibs are built in a tree of directories.  The top of the tree,
 represented by `.' in the list of multilib directories, is the default
 library to use when no special compiler options are used.  The
 subdirectories of the tree hold versions of the library to use when
 particular compiler options are used.
 

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(configure.info.gz) Multilibs

(configure.info.gz) Multilibs in Target Libraries