How to build:

First set up the environment:

tools/prepare
  -> tools/install-dependencies

Then depending on what you like, first fetch all packages:

tools/fetch-all
  -> tools/forall
    -> tools/fetch

Then unzip all packages:

tools/unzip-all
  -> tools/forall
    -> tools/unzip

Then patch all packages:

tools/patch-all
  -> tools/forall
    -> tools/patch

And finally build everything:

tools/build-all
  -> tools/forall
    -> tools/complete-build
      -> tools/configure
      -> tools/build
      -> tools/install-staging
      -> tools/install

Or do it in one go:

tools/rebuild-all
  ->tools/fetch-all
  ->tools/clean-all
  ->tools/unzip-all
  ->tools/patch-all
  ->tools/build-all

If you wish to rebuild including fetching packages again:

tools/rebuild-all-full
  ->tools/refetch-all
  ->tools/clean-all
  ->tools/unzip-all
  ->tools/patch-all
  ->tools/build-all

You can always clean everything:

tools/clean-all
  -> tools/forall
    -> tools/clean

Of course you can also do the packages step by step:

tools/fetch <package>
  uses
    tools/functions
    package/<package>/package

tools/unzip <package>
  uses
    tools/functions
    package/<package>/package
    tools/setenv

tools/patch <package>
  uses
    tools/functions
    tools/install-functions
    package/<package>/package
    tools/setenv
    patches/<package>/*.patch
    package/<package>/post-patch (if existing)

tools/complete-build <package>

  OR

tools/configure <package>
  uses
    tools/functions
    tools/install-functions
    package/<package>/package
    tools/setenv
    package/<package>/gettextize (if existing)
    package/<package>/autoreconfigure (if existing)
    package/<package>/configure

tools/build <package>
  uses
    tools/functions
    package/<package>/package
    tools/setenv
    package/<package>/build

tools/install-staging <package>
  uses
    tools/functions
    tools/install-functions
    package/<package>/package
    tools/setenv
    package/<package>/install-staging (if existing, otherwise default action)
    package/<package>/post-install-staging (if existing)

tools/install <package>
  uses
    tools/functions
    tools/install-functions
    package/<package>/package
    tools/setenv
    package/<package>/install (if existing, otherwise default action)
    package/<package>/post-install (if existing)

To clean a single package:

tools/clean <package>
  uses
    tools/functions
    package/<package>/package
    tools/setenv