Hi Ellie,
> The Cyrus httpd provides DAV services (which use the HTTP protocol).
If you want the Cyrus httpd to support HTTP/2, you will need
libnghttp2. Otherwise it will only support HTTP/1.
Always wanted to ask what the nghttp2 dependency was for. From what you
say I infer that it's only needed for HTTP/2. But what DAV service could
benefit from this? Are there DAV clients that know HTTP/2?
And speaking about the SNMP agent, are there any plans to complete the
transfer of its code from the master process to an independent daemon,
issue #1765 <https://github.com/cyrusimap/cyrus-imapd/issues/1765>? (It
needs to be moved out to implement efficient chroot)
Regards,
Anatoli
*From:* Ellie Timoney <el...@fastmail.com>
*Sent:* Monday, March 18, 2019 21:55
*To:* Info-cyrus <info-cyrus@lists.andrew.cmu.edu>
*Subject:* Re: cyrus-imapd build dependencies
Hi Patrick,
On Mon, Mar 18, 2019, at 11:33 PM, Patrick Goetz wrote:
This page on compiling cyrus-imapd:
https://www.cyrusimap.org/imap/developer/compiling.html
This page is in the developer section, so its context is for people who are
Cyrus developers (especially for new contributors needing to get rolling
quickly). Expect a certain amount of detail to be glossed over on the
assumption that it's already known and/or reasonably documented elsewhere.
shows a number of build dependencies; however I was just able to compile
cyrus-imapd without these installed:
gperf
libbsd
Are these actually necessary?
Probably depends on which features you enable. If you run './configure'
without arguments, a number of large features won't be enabled, so any
libraries they depend on won't be used. Some of these features are important
enough that we (developers) kind of think of them as being
probably-always-included even if they default to not.
Later in the page, under "Alternate database formats" it shows the
configure flags to use in order to use mysql/mariadb as a backend for
cyrus databases. I think this is needed if one plans to use virtual
domains, but I couldn't get a confirmation on this.
These are literally just "alternate database formats" -- maybe you already have
extensive expertise in some other database and would rather use that than one of the
builtin ones. It has nothing to do with virtual domains. Documentation about the
databases used by Cyrus are here:
https://www.cyrusimap.org/imap/concepts/deployment/databases.html
In any case, the
configure options are given as
--with-mysql, --with-mysql-incdir, --with-mysql-libdir
with no clear indication of what each of these does. For example, is
the --with-mysql all inclusive, or does one need to set all 3?
The canonical source of information on configure options is the output from
'./configure --help'. It's kind of assumed that a developer will look there to
find this information.
Finally a couple of items in the "Other" category are a real head
scratcher. For example, what is the purpose of net-snmp?
You can click on any of those package names to go to the website for that
package and get a description of what it does. For example,
Simple Network Management Protocol (SNMP) is a widely used
protocol for monitoring the health and welfare of network equipment
(eg. routers), computer equipment and even devices like UPSs.
Net-SNMP is a suite of applications used to implement SNMP v1,
SNMP v2c and SNMP v3 using both IPv4 and IPv6.
libnghttp2 is listed as needed for "HTTP/2 support for httpd" -- what's
using httpd? Is this to faciliate CalDAV/CardDAV?
The Cyrus httpd provides DAV services (which use the HTTP protocol). If you
want the Cyrus httpd to support HTTP/2, you will need libnghttp2. Otherwise it
will only support HTTP/1.
Hope this helps :)
ellie
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