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LIBMAP.CONF(5) FreeBSD File Formats Manual LIBMAP.CONF(5) NAME libmap.conf -- configuration file for dynamic object dependency mapping DESCRIPTION The libmap functionality of ld-elf.so.1(1) allows dynamic object depen- dencies to be mapped to arbitrary names. 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. Constrained mappings may be specified by enclosing the name of the exe- cutable 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 /usr/bin/foo will not match a constraint for foo and vise-versa. WARNING! Constrained mappings must never appear first in the configura- tion file. While there is a way to specify the ``default'' constraint, its use is not recommended. The most common use at the date of writing is for allowing multiple POSIX threading libraries to be used on a system without relinking or changing symlinks. EXAMPLE # /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 FILES /etc/libmap.conf The libmap configuration file. SEE ALSO ldd(1), rtld(1) HISTORY The libmap.conf manual page and libmap functionality first appeared in FreeBSD 5.1. AUTHORS This manual page was written by Matthew N. Dodd <winter@jurai.net>. FreeBSD 4.10 January 31, 2004 FreeBSD 4.10
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