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and rename js.exe to couch_js.exe.
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Here is a binary (no warranty! may burn your eyes out!) built against ICU 4.0 in 32-bit Windows: attachment:couch_erl_driver.dll

CouchDB does not natively install on Windows but it is possible to install it by hand. Be aware that many unit tests fail due to IO-related features that aren't supported by Erlang on Windows.

Please update this guide as needed, we aim to collect feedback and roll the procedure into the official build.

These instructions currently refer to paths as they'd be set up in a default installation of Erlang OTP 5.6.3, with the couchDB distribution installed at

C:\Program Files\erl5.6.3\lib\couchdb-0.8.1


You will need the following software installed on your system:

Building SpiderMonkey

The SpiderMonkey distribution's Windows build stuff is broken. See [http://blog.endflow.net/?p=55&lang=en this blog post] for a working js.mak file. Don't bother trying to import the project file into a contemporary Visual Studio; just use the Visual Studio command line tools with the js.mak file referred to above.

CouchDB uses a custom JavaScript driver, which provides unicode and buffering improvements. In the SpiderMonkey distribution, rename src/js.c to src/js.c.bak, and copy C:\Program Files\erl5.6.3\lib\couchdb-0.8.1\src\couchdb\couch_js.c from the CouchDB distribution to src/js.c in the SpiderMonkey distribution. Before running nmake, edit the new js.c and change #include <jsapi.h> to #include "jsapi.h".

Once you've built js.exe and js32.dll, copy them both to

C:\Program Files\erl5.6.3\erts-5.6.3\bin

and rename js.exe to couch_js.exe.

Base Installation

After installing Erlang you should having something similar to:

C:\Program Files\erl5.6.3

Copy the whole CouchDB source tree to:

C:\Program Files\erl5.6.3\lib\couchdb-0.8.0

Make the following empty directory:

C:\Program Files\erl5.6.3\lib\mochiweb-0.01\ebin

From ICU copy icu*.dll and libeay32.dll to:

C:\Program Files\erl5.6.3\erts-5.6.2\bin

C Compilation


This is a wrapper to provide ICU features to CouchDB.

The simplest way to build a DLL is to create a Win32 DLL project in an IDE, add couch_erl_driver.c into the project, and change project settings to include the Erlang ERTS and ICU4C header paths.

Make the following empty directory:

C:\Program Files\erl5.6.3\lib\couchdb-0.8.0\priv

Copy the DLL to:

C:\Program Files\erl5.6.3\lib\couchdb-0.8.0\priv\couch_erl_driver.dll

Here is a binary (no warranty! may burn your eyes out!) built against ICU 4.0 in 32-bit Windows: attachment:couch_erl_driver.dll


This is a wrapper to provide UTF-8 and buffering improvements to SpiderMonkey.

Replace js.c with couch_js.c, and change '#include <jsapi.h>' to '#include "jsapi.h"', then build js.exe again, rename it to couch_js.exe and copy it to:

C:\Program Files\erl5.6.3\erts-5.6.2\bin

Erlang Compilation

Create a the following file:

C:\Program Files\erl5.6.3\lib\couchdb-0.8.0\src\Emakefile

Add the following content:

{'./couchdb/*', [{outdir,"../ebin"}]}.
{'./mochiweb/*', [{outdir,"../../mochiweb-0.01/ebin"}]}.

Launch erl (or werl) and execute the following command to change working directory:

cd("C:/Program Files/erl5.6.3/lib/couchdb-0.8.0/src").

Execute this command to compile CouchDB:



Copy the following file:

C:\Program Files\erl5.6.3\lib\couchdb-0.8.0\etc\couchdb\couch.ini.tpl.in

To this location:

C:/Program Files/erl5.6.3/bin/couch.ini

Edit the file to look something like this:


ConsoleStartupMsg=Apache CouchDB is starting.




DocumentRoot=C:/Program Files/erl5.6.3/lib/couchdb-0.8.1/share/www


UtilDriverDir=C:/Program Files/erl5.6.3/lib/couchdb-0.8.1/priv/


[Couch Query Servers]

javascript=couch_js "C:/Program Files/erl5.6.3/lib/couchdb-0.8.1/share/server/main.js"

Make sure that the DbRootDir exists and that the LogFile can be created.


Launch erl (or werl) and execute the following command:


To check that everything has worked point your web browser to [http://localhost:5984/_utils/index.html] and run the test suite.