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$FreeBSD: head/share/man/man5/libmap.conf.5 125278 2004-01-31 22:02:03Z trhodes $
.Dd January 31, 2004 .Dt LIBMAP.CONF 5 .Os .Sh NAME .Nm libmap.conf .Nd "configuration file for dynamic object dependency mapping" .Sh DESCRIPTION The .Nm libmap functionality of .Xr ld-elf.so.1 1 allows dynamic object dependencies to be mapped to arbitrary names.
p The configuration file consists of two whitespace separated columns; the left hand side containing the mapping candidate and the right hand side containing the mapping. Dependencies are matched against candidates and replaced with the mappings.
p Constrained mappings may be specified by enclosing the name of the executable or library in brackets. All mappings following a constraint will only be evaluated for that constraint. Currently, constraints are matched literally so that an executable with a fully qualified pathname will only match the same constraint. This means that
a /usr/bin/foo will not match a constraint for
a foo and vise-versa.
p WARNING! Constrained mappings must never appear first in the configuration file. While there is a way to specify the .Dq default constraint, its use is not recommended.
p The most common use at the date of writing is for allowing multiple .Tn POSIX threading libraries to be used on a system without relinking or changing symlinks. .Sh EXAMPLE d -literal # /etc/libmap.conf # # candidate mapping # libpthread.so.1 libpthread.so.1 # Everything uses 'libpthread' libpthread.so libpthread.so libc_r.so.5 libpthread.so.1 # Everything that uses 'libc_r' libc_r.so libpthread.so # now uses 'libpthread' [/usr/local/bin/mplayer] # 'mplayer' uses libc_r. libpthread.so.1 libc_r.so.5 libpthread.so libc_r.so [mplayer] libpthread.so.1 libc_r.so.5 libpthread.so libc_r.so [/usr/local/sbin/httpd] # Apache uses libthr libpthread.so.1 libthr.so.1 libpthread.so libthr.so [httpd] libpthread.so.1 libthr.so.1 libpthread.so libthr.so .Ed .Sh FILES l -tag -width ".Pa /etc/libmap.conf" -compact t Pa /etc/libmap.conf The libmap configuration file. .El .Sh SEE ALSO .Xr ldd 1 , .Xr rtld 1 .Sh HISTORY The .Nm manual page and .Nm libmap functionality first appeared in .Fx 5.1 . .Sh AUTHORS This manual page was written by .An Matthew N. Dodd Aq winter@jurai.net .