diff --git a/README.rst b/README.rst
index fcae578..5a4a5a4 100644
--- a/README.rst
+++ b/README.rst
@@ -64,7 +64,11 @@ PHP versions the default one that gets run when just typing ``php``::
 
 You need to have ``inst/current-bin`` in your ``$PATH`` to make this work.
 
+Compiling extensions
+--------------------
+PECL extensions can be compiled for any installed PHP version using the ``compile-extension.sh`` script::
 
+    $ ./src/compile-extension apc 5.4.3
 
 About phpfarm
 -------------
diff --git a/src/compile-extension.sh b/src/compile-extension.sh
new file mode 100755
index 0000000..02d15cd
--- /dev/null
+++ b/src/compile-extension.sh
@@ -0,0 +1,16 @@
+#!/bin/sh
+# @see http://cweiske.de/tagebuch/phpfarm-install-extensions.htm
+# @example ./compile-extension.sh xdebug 5.4.3
+
+EXTENSION=$1
+PHPVERSION=$2
+
+mkdir src/extensions
+rm -rf src/extensions/*
+pecl download $EXTENSION
+tar xvzf $EXTENSION*
+cd $EXTENSION*
+/opt/phpfarm/inst/bin/phpize-$PHPVERSION
+./configure --with-php-config=/opt/phpfarm/inst/bin/php-config-$PHPVERSION
+make
+make install