This is a list of presently defined Automake conditionals in our infrastructure.
They can be used to enable / disable build steps such as testing and enabling or
disabling build targets depending on the user's configuration.

; WANT_MORPHOLOGY : {{--enable-analysers}}, default=yes\\
                    Used to enable the default set of analysers, which is:
                    {{analyser-gt-desc.xfst}}, {{analyser-gt-norm.xfst}} and
                    {{analyser-disamb-gt-desc.hfst}}
; WANT_GENERATION : {{--enable-generators}}, default=yes\\
                    Used to enable the default set of generators, which is:
                    {{generator-gt-desc.xfst}} and {{generator-gt-norm.xfst}}
; WANT_TRANSCRIPTORS : {{--enable-transcriptors, default}}=yes\\
                    Used to enable compilation of transcriptors, that is,
                    converters between different types of textual
                    representations, such as dates expressed as text or digits.
; WANT_SPELLERS :   {{--enable-spellers}}, default=no\\
                    Used to enable building of spellers in general
; WANT_SPELLERAUTOMAT : {{--enable-spellerautomat}}, default=no\\
                    Used to enable building of the hfst speller automat
; WANT_VOIKKO :     {{--enable-voikko}}, default=no\\
                    Used to enable building of the voikko speller = zhfst file
; WANT_HUNSPELL :   {{--enable-hunspell}}, default=no\\
                    Used to enable building of Hunspell dic and aff files. Not
                    yet functional since this build is not implemented.
; WANT_FST_HYPHENATOR : {{--enable-fst_hyphenator}}, default=no\\
                    Used to enable building of hyphenating tools. Not functional
                    because it is not implemented yet.
; WANT_GRAMCHECK :  {{--enable-grammarchecker}}, default=no\\
                    Used to enable building of grammar checkers. Is only usable
                    in sme, the only language with a grammar checker at the
                    moment.
; WANT_DICTIONARIES : {{--enable-dicts}}, default=no\\
                    Used to enable building of transducers targeted at
                    electronic dictionaries
; WANT_OAHPA :      {{--enable-oahpa}}, default=no\\
                    Used to enable building of transducers targeted at Oahpa
; WANT_PHONETIC :   {{--enable-phonetic}}, default=no\\
                    Used to enable building of transducers for conversion from
                    text to IPA
; WANT_APERTIUM :   {{--enable-apertium}}, default=no\\
                    Used to enable building of transducers and constraint
                    grammar files used for machine translation in Apertium

Example of how to use them:

{{{
if WANT_MORPHOLOGY
GT_ANALYSERS_HFST+=analyser-gt-desc.hfst \
				   analyser-gt-norm.hfst \
				   analyser-disamb-gt-desc.hfst
endif # WANT_MORPHOLOGY
}}}

This ensures that we build Hfst analysers only if the user has enabled
analysers. Analysers are enabled by default, so the usefulness of this is rather
the oposite: the user can explicitly ''disable'' analysers, e.g. to speed up
compilation time when building spellers. In that case, the conditional will
make sure that the analysers are ''not'' built.