ld.so.conf(5) - NetBSD Manual Pages

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LD.SO.CONF(5)             NetBSD File Formats Manual             LD.SO.CONF(5)


NAME

     ld.so.conf - run-time link-editor configuration file


DESCRIPTION

     The ld.so.conf file specifies additional default directories (beyond the
     standard set, normally ``/usr/lib'' ).

     On a.out(5) systems, this file is scanned by ldconfig(8) to create the
     hints files used by the run-time linker /usr/libexec/ld.so to locate
     shared libraries.

     On elf systems, this file is scanned directly by the run-time linker
     /usr/libexec/ld.elf_so.

     Lines beginning with ``#'' are treated as comments and ignored.  Any
     other non-blank lines beginning with '/' are stripped of leading white-
     space and trailing comments (introduced with ``#'') together with any
     preceding whitespace, then treated as directories to be scanned for
     shared libraries to add to the hints.

     On elf lines that do not begin with a '/' are parsed as hardware depen-
     dent per library directives:

     <library_name> <sysctl_variable> <variable_value>[,...]:<library_name>[,...] ...

     If there is no match, the standard action is taken.


FILES

     /etc/ld.so.conf


EXAMPLES

     libm.so.0 machdep.fpu_present 1:libm387.so.0,libm.so.0

     The above line loads both libm387 and libm when the sysctl(3) variable
     fpu_present has the value 1.


SEE ALSO

     ld.aout_so(1), a.out(5), elf(5), ldconfig(8)


HISTORY

     The ld.so.conf file appeared in NetBSD 1.3.  The ELF support for it was
     added in NetBSD 1.5.


BUGS

     Directory names containing the comment character (``#'') and/or leading
     or trailing whitespace cannot be included.  (Embedded blanks are allowed,
     however.)

NetBSD 2.0                      August 24, 1997                     NetBSD 2.0