Anonymous Monk has asked for the wisdom of the Perl Monks concerning the following question:

Hi Monks,

I configured mod_perl2.0, I used startup.pl to load modules before, for that, i created one module Loadmodules.pm.

In loadumodules.pm contains to load requried modules

Code: Loadmodules.pm
package Loadmodules; use web::Home; 1;
Code: startup.pl
#! /usr/bin/perl use lib '/usr/local/apache2/cgi-bin/pages/'; #use Apache::Registry(); use Loadmodules; print "\n$_\n" foreach @INC; print "running good \n"; 1;

Problem: When i was using web::Home module in tool.cgi, getting error below:

Can't locate web/Home.pm in @INC (@INC contains: /etc/perl /usr/local/lib/perl/5.10.0 /usr/local/share/perl/5.10.0 /usr/lib/perl5 /usr/share/perl5 /usr/lib/perl/5.10 /usr/share/perl/5.10 /usr/local/lib/site_perl .) at /usr/local/apache2/cgi-bin/pages/tool/tool.cgi line 9.

absolute path of web:Home is "/usr/local/apache2/cgi-bin/pages/web/Home.pm"

code : tool.cgi
!/usr/bin/perl BEGIN { print STDERR "\n $_\n" foreach @INC; } use strict; use CGI; use Data::Dumper; use CGI::Carp qw(warningsToBrowser fatalsToBrowser); use web::Home; use CONF; $q = new CGI; print $q->header(); $dbmgnt_obj = new web::Home($q); ......

Cofigureation file : httpd.conf

#http://articles.techrepublic.com.com/5100-22_11-5076696.html # This is the main Apache HTTP server configuration file. It contains + the # configuration directives that give the server its instructions. # See <URL:http://httpd.apache.org/docs/2.2> for detailed information. # In particular, see # <URL:http://httpd.apache.org/docs/2.2/mod/directives.html> # for a discussion of each configuration directive. # # Do NOT simply read the instructions in here without understanding # what they do. They're here only as hints or reminders. If you are +unsure # consult the online docs. You have been warned. # # Configuration and logfile names: If the filenames you specify for ma +ny # of the server's control files begin with "/" (or "drive:/" for Win32 +), the # server will use that explicit path. If the filenames do *not* begin # with "/", the value of ServerRoot is prepended -- so "logs/foo_log" # with ServerRoot set to "/usr/local/apache2" will be interpreted by t +he # server as "/usr/local/apache2/logs/foo_log". # # ServerRoot: The top of the directory tree under which the server's # configuration, error, and log files are kept. # # Do not add a slash at the end of the directory path. If you point # ServerRoot at a non-local disk, be sure to point the LockFile direct +ive # at a local disk. If you wish to share the same ServerRoot for multi +ple # httpd daemons, you will need to change at least LockFile and PidFile +. # ServerRoot "/usr/local/apache2" # # Listen: Allows you to bind Apache to specific IP addresses and/or # ports, instead of the default. See also the <VirtualHost> # directive. # # Change this to Listen on specific IP addresses as shown below to # prevent Apache from glomming onto all bound IP addresses. # #Listen 12.34.56.78:80 Listen 80 # # Dynamic Shared Object (DSO) Support # # To be able to use the functionality of a module which was built as a + DSO you # have to place corresponding `LoadModule' lines at this location so t +he # directives contained in it are actually available _before_ they are +used. # Statically compiled modules (those listed by `httpd -l') do not need # to be loaded here. # # Example: # LoadModule foo_module modules/mod_foo.so LoadModule perl_module modules/mod_perl.so PerlRequire conf/startup.pl <IfModule !mpm_netware_module> <IfModule !mpm_winnt_module> # # If you wish httpd to run as a different user or group, you must run # httpd as root initially and it will switch. # # User/Group: The name (or #number) of the user/group to run httpd as. # It is usually good practice to create a dedicated user and group for # running httpd, as with most system services. # User daemon Group daemon </IfModule> </IfModule> # 'Main' server configuration # # The directives in this section set up the values used by the 'main' # server, which responds to any requests that aren't handled by a # <VirtualHost> definition. These values also provide defaults for # any <VirtualHost> containers you may define later in the file. # # All of these directives may appear inside <VirtualHost> containers, # in which case these default settings will be overridden for the # virtual host being defined. # # # ServerAdmin: Your address, where problems with the server should be # e-mailed. This address appears on some server-generated pages, such # as error documents. e.g. admin@your-domain.com # ServerAdmin you@example.com # # ServerName gives the name and port that the server uses to identify +itself. # This can often be determined automatically, but we recommend you spe +cify # it explicitly to prevent problems during startup. # # If your host doesn't have a registered DNS name, enter its IP addres +s here. # ServerName myportal:80 # # DocumentRoot: The directory out of which you will serve your # documents. By default, all requests are taken from this directory, b +ut # symbolic links and aliases may be used to point to other locations. # DocumentRoot "/usr/local/apache2/htdocs" # # Each directory to which Apache has access can be configured with res +pect # to which services and features are allowed and/or disabled in that # directory (and its subdirectories). # # First, we configure the "default" to be a very restrictive set of # features. # ScriptAlias /cgi-bin/ /usr/local/apache2/cgi-bin/ <Directory "/usr/local/apache2/cgi-bin"> Options FollowSymLinks Options ExecCGI AddHandler cgi-script .cgi .pl SetHandler cgi-script AllowOverride None Order deny,allow Deny from all </Directory> # # Note that from this point forward you must specifically allow # particular features to be enabled - so if something's not working as # you might expect, make sure that you have specifically enabled it # below. # # # This should be changed to whatever you set DocumentRoot to. # <Directory "/usr/local/apache2/htdocs"> # # Possible values for the Options directive are "None", "All", # or any combination of: # Indexes Includes FollowSymLinks SymLinksifOwnerMatch ExecCGI M +ultiViews # # Note that "MultiViews" must be named *explicitly* --- "Options A +ll" # doesn't give it to you. # # The Options directive is both complicated and important. Please + see # http://httpd.apache.org/docs/2.2/mod/core.html#options # for more information. # Options Indexes FollowSymLinks # # AllowOverride controls what directives may be placed in .htacces +s files. # It can be "All", "None", or any combination of the keywords: # Options FileInfo AuthConfig Limit # AllowOverride None # # Controls who can get stuff from this server. # Order allow,deny Allow from all </Directory> # # DirectoryIndex: sets the file that Apache will serve if a directory # is requested. # <IfModule dir_module> DirectoryIndex index.html </IfModule> # # The following lines prevent .htaccess and .htpasswd files from being + # viewed by Web clients. # <FilesMatch "^\.ht"> Order allow,deny Deny from all Satisfy All </FilesMatch> # # ErrorLog: The location of the error log file. # If you do not specify an ErrorLog directive within a <VirtualHost> # container, error messages relating to that virtual host will be # logged here. If you *do* define an error logfile for a <VirtualHost +> # container, that host's errors will be logged there and not here. # ErrorLog "logs/error_log" # # LogLevel: Control the number of messages logged to the error_log. # Possible values include: debug, info, notice, warn, error, crit, # alert, emerg. # LogLevel warn <IfModule log_config_module> # # The following directives define some format nicknames for use wi +th # a CustomLog directive (see below). # LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agen +t}i\"" combined LogFormat "%h %l %u %t \"%r\" %>s %b" common <IfModule logio_module> # You need to enable mod_logio.c to use %I and %O LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Ag +ent}i\" %I %O" combinedio </IfModule> # # The location and format of the access logfile (Common Logfile Fo +rmat). # If you do not define any access logfiles within a <VirtualHost> # container, they will be logged here. Contrariwise, if you *do* # define per-<VirtualHost> access logfiles, transactions will be # logged therein and *not* in this file. # CustomLog "logs/access_log" common # # If you prefer a logfile with access, agent, and referer informat +ion # (Combined Logfile Format) you can use the following directive. # #CustomLog "logs/access_log" combined </IfModule> <IfModule alias_module> # # Redirect: Allows you to tell clients about documents that used t +o # exist in your server's namespace, but do not anymore. The client + # will make a new request for the document at its new location. # Example: # Redirect permanent /foo http://www.example.com/bar # # Alias: Maps web paths into filesystem paths and is used to # access content that does not live under the DocumentRoot. # Example: # Alias /webpath /full/filesystem/path # # If you include a trailing / on /webpath then the server will # require it to be present in the URL. You will also likely # need to provide a <Directory> section to allow access to # the filesystem path. # # ScriptAlias: This controls which directories contain server scri +pts. # ScriptAliases are essentially the same as Aliases, except that # documents in the target directory are treated as applications an +d # run by the server when requested rather than as documents sent t +o the # client. The same rules about trailing "/" apply to ScriptAlias # directives as to Alias. # <Location /perl> SetHandler perl-script #PerlHandler Apache::Registry PerlHandler ModPerl::Registry Options +ExecCGI </Location> </IfModule> <IfModule cgid_module> # # ScriptSock: On threaded servers, designate the path to the UNIX # socket used to communicate with the CGI daemon of mod_cgid. # #Scriptsock logs/cgisock </IfModule> # # "/usr/local/apache2/cgi-bin" should be changed to whatever your Scri +ptAliased # CGI directory exists, if you have that configured. # <Directory "/usr/local/apache2/cgi-bin"> AllowOverride None Options None Order allow,deny Allow from all </Directory> # # DefaultType: the default MIME type the server will use for a documen +t # if it cannot otherwise determine one, such as from filename extensio +ns. # If your server contains mostly text or HTML documents, "text/plain" +is # a good value. If most of your content is binary, such as applicatio +ns # or images, you may want to use "application/octet-stream" instead to # keep browsers from trying to display binary files as though they are # text. # DefaultType text/plain <IfModule mime_module> # # TypesConfig points to the file containing the list of mappings f +rom # filename extension to MIME-type. # TypesConfig conf/mime.types # # AddType allows you to add to or override the MIME configuration # file specified in TypesConfig for specific file types. # #AddType application/x-gzip .tgz # # AddEncoding allows you to have certain browsers uncompress # information on the fly. Note: Not all browsers support this. # #AddEncoding x-compress .Z #AddEncoding x-gzip .gz .tgz # # If the AddEncoding directives above are commented-out, then you # probably should define those extensions to indicate media types: # AddType application/x-compress .Z AddType application/x-gzip .gz .tgz # # AddHandler allows you to map certain file extensions to "handler +s": # actions unrelated to filetype. These can be either built into th +e server # or added with the Action directive (see below) # # To use CGI scripts outside of ScriptAliased directories: # (You will also need to add "ExecCGI" to the "Options" directive. +) # #AddHandler cgi-script .cgi # For type maps (negotiated resources): #AddHandler type-map var # # Filters allow you to process content before it is sent to the cl +ient. # # To parse .shtml files for server-side includes (SSI): # (You will also need to add "Includes" to the "Options" directive +.) # #AddType text/html .shtml #AddOutputFilter INCLUDES .shtml </IfModule> # # The mod_mime_magic module allows the server to use various hints fro +m the # contents of the file itself to determine its type. The MIMEMagicFil +e # directive tells the module where the hint definitions are located. # #MIMEMagicFile conf/magic # # Customizable error responses come in three flavors: # 1) plain text 2) local redirects 3) external redirects # # Some examples: #ErrorDocument 500 "The server made a boo boo." #ErrorDocument 404 /missing.html #ErrorDocument 404 "/cgi-bin/missing_handler.pl" #ErrorDocument 402 http://www.example.com/subscription_info.html # # # EnableMMAP and EnableSendfile: On systems that support it, # memory-mapping or the sendfile syscall is used to deliver # files. This usually improves server performance, but must # be turned off when serving from networked-mounted # filesystems or if support for these functions is otherwise # broken on your system. # #EnableMMAP off #EnableSendfile off # Supplemental configuration # # The configuration files in the conf/extra/ directory can be # included to add extra features or to modify the default configuratio +n of # the server, or you may simply copy their contents here and change as + # necessary. # Server-pool management (MPM specific) #Include conf/extra/httpd-mpm.conf # Multi-language error messages #Include conf/extra/httpd-multilang-errordoc.conf # Fancy directory listings #Include conf/extra/httpd-autoindex.conf # Language settings #Include conf/extra/httpd-languages.conf # User home directories #Include conf/extra/httpd-userdir.conf # Real-time info on requests and configuration #Include conf/extra/httpd-info.conf # Virtual hosts #Include conf/extra/httpd-vhosts.conf # Local access to the Apache HTTP Server Manual #Include conf/extra/httpd-manual.conf # Distributed authoring and versioning (WebDAV) #Include conf/extra/httpd-dav.conf # Various default settings #Include conf/extra/httpd-default.conf # Secure (SSL/TLS) connections #Include conf/extra/httpd-ssl.conf # # Note: The following must must be present to support # starting without SSL on platforms with no /dev/random equivale +nt # but a statically compiled-in mod_ssl. # <IfModule ssl_module> SSLRandomSeed startup builtin SSLRandomSeed connect builtin </IfModule>

Please what is the bug and provide the solution

Replies are listed 'Best First'.
Re: not found modules path @INC
by morgon (Priest) on Oct 23, 2010 at 22:41 UTC
    Please what is the bug
    There is no bug.

    provide the solution
    Add PerlSwitches -I/usr/local/apache2/cgi-bin/pages to your http.conf so that apache's perl knows where to look for your module.

      thanks for replay

      I added given statement in httpconf file.

      still facing same issue

      code: httpd.conf
      LoadModule perl_module modules/mod_perl.so PerlRequire conf/startup.pl PerlSwitches -I/usr/local/apache2/cgi-bin/pages
      code: tool.cgi
      BEGIN { print STDERR "\n $_\n" foreach @INC; } use strict; use CGI; use Data::Dumper; use CGI::Carp qw(warningsToBrowser fatalsToBrowser); use web::Home; use CONF;

      And also I found one thing observe below outputs

      output: startup.pl
      /usr/local/apache2/cgi-bin/pages /etc/perl /usr/local/lib/perl/5.10.0 /usr/local/share/perl/5.10.0 /usr/lib/perl5 /usr/share/perl5 /usr/lib/perl/5.10 /usr/share/perl/5.10 /usr/local/lib/site_perl
      Output: tool.cgi in STDERR
      /etc/perl /usr/local/lib/perl/5.10.0 /usr/local/share/perl/5.10.0 /usr/lib/perl5 /usr/share/perl5 /usr/lib/perl/5.10 /usr/share/perl/5.10 /usr/local/lib/site_perl

      Here I am not found there module path in tool.cgi sterr output.

        please provide solution

Re: not found modules path @INC
by Corion (Patriarch) on Oct 24, 2010 at 08:39 UTC

    Add the line to tool.cgi as well:

    use lib '/usr/local/apache2/cgi-bin/pages/';

    If you want to specify locations where to load modules, you need to specify them everywhere.

      Thanks for reply.

      I have several cgi files like that, then it is quite difficult, and also if I do like that then what is use of concept for pre load modules in mod_perl

      I think need to still configure httpd for to load modules, like prel5lib etc..

      Please let me know the correct solution for this

        But you're not using mod_perl for your cgi-bin, ExecCGI is not mod_perl

        PERL5LIB as documented in perlrun, is just another enviroment variable.