(autoconf.info)Configuration Links

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4.11 Creating Configuration Links

You may find it convenient to create links whose destinations depend
upon results of tests.  One can use `AC_CONFIG_COMMANDS' but the
creation of relative symbolic links can be delicate when the package is
built in a directory different from the source directory.

     Make `AC_OUTPUT' link each of the existing files SOURCE to the
     corresponding link name DEST.  Makes a symbolic link if possible,
     otherwise a hard link if possible, otherwise a copy.  The DEST and
     SOURCE names should be relative to the top level source or build
     directory.  This macro is one of the instantiating macros; see
     Note: Configuration Actions.

     For example, this call:


     creates in the current directory `host.h' as a link to
     `SRCDIR/config/$machine.h', and `object.h' as a link to

     The tempting value `.' for DEST is invalid: it makes it impossible
     for `config.status' to guess the links to establish.

     One can then run:
          ./config.status host.h object.h
     to create the links.

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