>>      (build-system gnu-build-system)
>>      (inputs
>>       ;; TODO: Add portSMF and libwidgetextra once they're packaged.  In-tree
>> @@ -73,7 +79,10 @@
>>         ("lilv" ,lilv)
>>         ("portaudio" ,portaudio)))
>>      (native-inputs
>> -     `(("gettext" ,gettext-minimal)     ;for msgfmt
>> +     `(("autoconf" ,autoconf)
>> +       ("automake" ,automake)
>> +       ("gettext" ,gettext-minimal)     ;for msgfmt
>> +       ("libtool" ,libtool)
>>         ("pkg-config" ,pkg-config)
>>         ("python" ,python-2)
>>         ("which" ,which)))
>> @@ -90,6 +99,12 @@
>>            (string-append "ID3TAG_LIBS=-L" libid3tag "/lib -lid3tag -lz")
>>            (string-append "LIBMAD_CFLAGS=-I" libmad "/include")
>>            (string-append "LIBMAD_LIBS=-L" libmad "/lib -lmad")))
>> +       #:phases
>> +       (modify-phases %standard-phases
>> +         ;; Ensure the usage of system libraries.
>> +         (add-before 'configure 'autoreconf
>> +           (lambda _
>> +             (zero? (system* "autoreconf" "-vfi")))))
>
> Can you clarify how autoreconf ensures usage of system libraries?
> Usually it just re-generates configure scripts and Makefiles from
> templates, but should not make any functional difference.

I also noticed they offer yet another download on the home page:

http://www.audacityteam.org/download/source/

Perhaps this one is properly bootstrapped?