To build a Mac OS X version of BFilter, you need the following:
XCode >= 2.2    http://developer.apple.com (free registration required)
CMake >= 2.4.6  http://www.cmake.org

To build BFilter and its installer, open the Terminal and to the following
steps:

1. Run ./build-deps.sh
This will download and build BFilter's dependencies.

2. Run ./build.sh
This will build BFilter except the installer.
During development, you may run ./open-in-xcode.sh and build from there,
but releases must be built using ./build.sh

3. Run ./mkinst.sh
This will open the PackageMaker utility where you need to update BFilter's
version, both in "Installer Interface" and "Package Version" tabs.
After that do Project -> Build and save the package to DmgDir.
When done, go back to the terminal and press Enter. The .dmg file will
be created in the current directory.