gitweb: Mention optional Perl modules in INSTALL

Some optional additional Perl modules are required for some of extra
features.  Mention those in gitweb/INSTALL.

Signed-off-by: Jakub Narebski <redacted>
Signed-off-by: Junio C Hamano <redacted>

diff --git a/INSTALL b/INSTALL
index 94cef40f3b7c481982f59aed657ada7a92b9d80a09c125918b17d353443179bd..da9b66a964973a1f9713beebe6e9644c8504292c9fa4501a522805b3560456ea 100644 (file)
--- a/INSTALL
+++ b/INSTALL
@@ -237,6 +237,12 @@ Requirements
  - Perl modules: CGI, Encode, Fcntl, File::Find, File::Basename.
  - web server
 
+The following optional Perl modules are required for extra features
+ - Digest::MD5 - for gravatar support
+ - CGI::Fast and FCGI - for running gitweb as FastCGI script
+ - HTML::TagCloud - for fancy tag cloud in project list view
+ - HTTP::Date or Time::ParseDate - to support If-Modified-Since for feeds
+
 
 Example web server configuration
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~