db_type as a compilation define was first introduced in 2006 in d0e2ac9,
but was removed in 2015 in 25791cf.
Nowadays: ./configure --enable-mssql will set {mssql, true} in vars.config;
That is read by ejabberd.app.src.script to set enabled_backends;
which is consulted by test/suite.erl to test only available backends.
Rebar 2 expands {{erts-vsn}} to "erts-$vsn", Rebar 3 expands it to just
"$vsn". Make sure `make rel` doesn't end up with a "$vsn" directory
next to "erts-$vsn" (which happened when using Rebar 3), and make sure
that ejabberdctl expects both "erl" and "epmd" to be installed below
"erts-$vsn" (which it didn't when using Rebar 3).
Reasons:
- Riak DB development is almost halted after Basho
- riak-erlang-client is abandoned and doesn't work
correctly with OTP22
- Riak is slow in comparison to other databases
- Missing key ordering makes it impossible to implement range
queries efficiently (e.g. MAM queries)
Even if no suitable C graphics libraries are detected
at compile time, the package is still usable because it
provides `eimp:get_type/1` which is used by mod_avatar.
The purpose of the module is to cope with legacy and modern
XMPP clients posting avatars. It automatically converts vCard based
avatars (XEP-0153) to PEP based avatars (XEP-0084) and vice versa.
Also, the module supports convertation between avatar image formats on
the fly: this is controlled by `convert` option. For example, to
convert all avatars into PNG format, configure the module as:
mod_avatar:
convert:
default: png
In order to convert only `webp` format to `jpeg`, set the following:
mod_avatar:
convert:
webp: jpeg
Note: the module depends on mod_vcard, mod_vcard_xupdate and mod_pubsub.
Also, ejabberd should be built with --enable-graphics option.
This option make 'rebar get-deps' command to always fetch latest versions
of deps that are developed together with ejabberd instead of using frozen
commit/branch/tag.
Specifying "--enable-nif" or "--disable-nif" when running ejabberd's
configure script has no effect anymore: NIF support is enabled by
default and can only be disabled by building the p1_xml dependency with
"--disable-nif".
Use dynamic Rebar configuration
Make iconv dependency optional
Disable transient_supervisors compile option
Add hipe compilation support
Only compile ibrowse and lhttpc when needed
Make it possible to generate an OTP application release
Add --enable-debug compile option
Add --enable-all compiler option
Add --enable-tools configure option
Add --with-erlang configure option.
Add --enable-erlang-version-check configure option.
Add lager support
Improve the test suite
