This INSTALL file is customized for the version of lxr used by mozilla.org. The original version can be found at http://lxr.linux.no/ In order to install LXR, you will need: - Perl version 5 or later. - A webserver with cgi-script capabilities. and optionally, to enable the freetext search queries: - Glimpse If you don't have Perl installed, get it from . If you need a webserver, take a look at Apache at If you want Glimpse and the freetext searching facilities, visit . LXR has so far been tested on the GNU/Linux operating system using the Apache webserver. Other unix-like operating systems and decently featured webservers should do as well. To install LXR itself: - Retrieve the lxr source via anonymous cvs from mozilla.org's server from mozilla/webtools/lxr. Find out about anonymous cvs at mozilla.org at http://www.mozilla.org/cvs.html - Edit lxr.conf to fit your source code installations and needs. - Make sure the files in http can be reached via your webserver. Make sure your webserver executes the files search, source, ident and diff as cgi-scripts. With the Apache webserver this can be accomplished by making .htaccess contain the following lines: SetHandler cgi-script You may also need to edit these Apache config files appropriately srm.conf AddHandler cgi-script .cgi access.conf Options # setting to all will work AllowOverride Options Its also recommended to set up a robots.txt file on your server to discourage robots from traversing your source tree and performing an identifier lookup for each identifier in your code. This will take up a lot of cpu time and probably several gigabytes of files. - Generate the identifier database. Go to the directory you configured as "dbdir" in lxr.conf and do "genxref foo", where foo is the subdirectory containing the actual source code. - (Optional) Generate the Glimpse database. Go to the directory you configured as "dbdir" in lxr.conf and do "glimpseindex -H . foo", where foo is the same as above. You might want to add other options to the commandline (e.g. "-n"), see the Glimpse documentation for details. If it doesn't work: - Make sure all the permissions are right. Remember that the webserver needs to be able to access most of them. - Check that all the Perl scripts find their library files, also when executed by the webserver. Multiple Trees To have the same lxr source directory index multiple trees, use a web server (such as apache) that supports virtual hosts and/or aliases. At mozilla.org, we set the document root of lxr.mozilla.org to the lxr/root directory and for each tree, set up an alias with the tree name pointing to the main lxr directory. From our httpd.conf: DocumentRoot /opt/webtools/lxr.mozilla.org/root ServerName lxr.mozilla.org Alias /classic /opt/webtools/lxr.mozilla.org Alias /ef /opt/webtools/lxr.mozilla.org Alias /grendel /opt/webtools/lxr.mozilla.org Alias /mailnews /opt/webtools/lxr.mozilla.org Alias /mozilla /opt/webtools/lxr.mozilla.org Alias /nspr /opt/webtools/lxr.mozilla.org Alias /seamonkey /opt/webtools/lxr.mozilla.org The lxr.conf file: LXR does not care much about your directory structure, all relevant paths can be configured from the lxr.conf file. This file is located in the same directory as the perl script files. LXR recognizes the following options in the configuration file. baseurl The url for the root directory of your source. Tree name (if any) is appended to this. htmlhead The header of all html files. This is a template that contains mainly html code but it can also contain some special directives, these are documented below. sourcehead A special version of htmlhead used for source code listings. sourcedirhead A special version of htmlhead used for directory listings. htmltail Template for bottom of pages. htmldir Template file for the directory listings. sourceroot The root directory of the source to be indexed. If you're indexing several version you could include a variable in the path. sourceroot: /usr/local/lxr/source/$v/linux/ To index more than one tree, include one sourceroot entry for each tree. Each entry is a tree name/directory pair. sourceroot: classic /export2/lxr-data/classic/mozilla virtroot This is prepended to the path name when forming the url in links. bonsaihome If bonsai is set up for your code then set this as the url prefix. If not, then remove the bonsai related code in the htmlhead file and ignore this. More info on bonsai can be found at http://www.mozilla.org/bonsai.html sourcerootname The name of the root (more....) incprefix Where to find source specific include files. dbdir Where to find the database files that lxr needs (fileidx xref and the glimpse files). The tree name (if any) is appended to this. glimpsebin Location of the glimpse binary on your system. variable This defines a variable that can be used in templates and the config file. The syntax is variable: , , , is the name of the variable, is a textual description, are the possible values of the variable. is the default value of the variable. The field can either be a list starting with a "(" and ending with a ")", with elements separated with ",", or it can be [ ]. In this case the values are read from a file with one value on each line. EXAMPLE: # Define typed variable "v", read valueset from file. variable: v, Version, [/local/lxr/source/versions], [/local/lxr/source/defversion] # Define typed variable "a". First value is default. variable: a, Architecture, (i386, alpha, m68k, mips, ppc, sparc, sparc64) map - This makes it possible to rewrite directories using variables. The linux sourcecode for instance contains several different architectures, the include files for each of these are found in the directory /include/asm-/. To remap each of these according to a variable $a you can specify map: /include/asm[^\/]*/ /include/asm-$a/ Find creative uses for this option :-)