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.TH "revdep\-rebuild" "1" "" "gentoolkit" ""
.SH "NAME"
revdep\-rebuild \- Gentoo: Reverse Dependency Rebuilder
.SH "SYNOPSIS"
.B revdep\-rebuild
[OPTIONS] [\-\-] [EMERGE OPTIONS]
.SH "DESCRIPTION"
revdep\-rebuild scans libraries and binaries for missing shared library dependencies and attempts to fix them by re\-emerging those broken binaries and shared libraries.  It is useful when an upgraded package breaks other software packages that are dependent upon the upgraded package.
.SH "OPTIONS"
.TP 
.B \-C | \-\-nocolor
Turn off colored output. (This option is also passed to portage.)
.TP      
.B \-e | \-\-exact
Emerge the most recent version of found packages, without regard to SLOT.
.TP 
.B \-h | \-\-help
Print usage.
.TP
.B \-i | \-\-ignore
Delete temporary files from previous runs.
.TP
.B \-k | \-\-keep\-temp
Force revdep\-rebuild not to delete temporary files after it successfully rebuilds packages. This option will NOT prevent revdep\-rebuild from deleting inconsistent or out\-of\-date temporary files.
.TP
.B \-\-library NAME | -L NAME
Search for reverse dependencies for a particular library or group of libraries, rather than every library on the system. Emerge packages that use the named library. NAME can be a full path to a library or basic regular expression.  (See regex(7).)
.TP 
.B \-l | \-\-no\-ld\-path
Do not set LD_LIBRARY_PATH. \fBNote:\fR Using this option will cause revdep-rebuild to report some false positives.
.TP 
.B \-o | \-\-no-order
Do not check the build order against the deep dependency list.  This will make revdep-rebuild faster, but it can cause emerge failures.  Please try revdep\-rebuild without \-o before reporting any bugs.
.TP 
.B \-p | \-\-pretend
Do a dry-run.  Do not delete temporary files.  (\-k \-p is redundant, but harmless.)  \-\-pretend is assumed when not running revdep\-rebuild as root.
.TP 
.B \-P | \-\-no\-progress
Turn off the progress meter
.TP 
.B \-q | \-\-quiet
Print less output and disable the progress meter.  (This option is also passed to portage.)
.TP 
.B \-u UTIL | \-\-no-util UTIL
Do not use features provided by UTIL.
UTIL can be one of portage-utils or pkgcore, or it can be a \fBquoted\fR space-delimited list.
.TP
.B \-v | \-\-verbose
More output.  (Prints the revdep\-rebuild search environment.)
.TP
.B All other options (including unrecognized ones) are passed to the emerge command.  Single\-letter options may not be combined, so for example, \-pv is not valid.  Please use \-p \-v.
.SH "CONFIGURATION"
revdep\-rebuild no longer uses hardcoded paths. To change the default behavior the following variables can be changed by the user.

LD_LIBRARY_MASK \- Mask of specially evaluated libraries
.LP 
SEARCH_DIRS \- List of directories to search for executables and libraries
.LP 
SEARCH_DIRS_MASK \- List of directories to not search

You can prepend to these variables by setting the variable in your environment prior to execution, by placing an entry in /etc/make.conf, or by placing a file in /etc/revdep\-rebuild containing the appropriate variables.

The variables are read and set in the following order:

environment settings \- one time changes by user
.br 
/etc/make.conf \- persistent changes by user
.br 
/etc/revdep\-rebuild/* \- persistent changes by ebuild authors

While a user can edit and modify the files in the /etc/revdep\-rebuild directory, please be aware that the /etc/revdep\-rebuild directory is not under configuration protection and files can be removed and/or overwritten by an ebuild. To change this add /etc/revdep\-rebuild to the CONFIG_PROTECT variable in /etc/make.conf.

An entry of "\-*" means to clear the variable from that point forward.
Example: SEARCH_DIRS="/usr/bin \-*" will set SEARCH_DIRS to contain only /usr/bin

revdep\-rebuild honors the NOCOLOR and PORTAGE_NICENESS variables from /etc/make.conf
.SH "EXAMPLES"
It is recommended that when running revdep\-rebuild that the following command be used initially:
.br 
\fBrevdep\-rebuild \-\-ignore \-\-pretend\fR

To search the entire system, while excluding /mnt and /home:
.br 
\fBenv SEARCH_DIRS="/ \-*" SEARCH_DIRS_MASK="/mnt /home" revdep\-rebuild\fR

To rebuild packages that depend on libkdecore.so.4 from KDE 3.3:
.br 
\fBrevdep\-rebuild \-\-library /usr/kde/3.3/lib/libkdecore.so.4\fR

To rebuild packages that depend upon libImlib.so and libImlib2.so:
.br 
\fBrevdep\-rebuild \-\-library libImlib[2]*.so.*\fR

.SH "EXIT STATUS"
revdep\-rebuild returns a zero exit status if it \fBand emerge\fR succeeds, and a nonzero exit status otherwise.
.SH "BUGS"
.LP 
Report bugs to <http://bugs.gentoo.org>. Please do not report emerge failures caused by \-o or \-e. Please include your .revdep\-rebuild* files, your emerge \-\-info, and patches. ;)

.SH "SEE ALSO"
emerge(1), portage(5), regex(7)