Explain the deal with internal test programs

    DEPEND[cipher_overhead_test]=../libcrypto ../libssl

  ENDIF

  # Internal test programs.  These are essentially a collection of internal

  # test routines.  Because they sometimes need to reach internal symbols that

  # aren't available through the shared library (at least on Linux, Solaris,

  # Windows and VMS, where the exported symbols are those listed in util/*.num),

  # these programs may be built on files directly picked from inside crypto/

  # or ssl/, to test using symbols that exist in those specific files.  These

  # programs will also be linked with libcrypto / libssl, so we don't pick

  # out more specific files than necessary.

  # This might mean we have multiply defined symbols, but since linking is

  # ordered with object files first and libraries after, the symbols from the

  # object files will be chosen before those in the libraries.  This is handled

  # properly by all linkers.

  # Note that when building with static libraries, none of those extra files

  # are needed, since all symbols are available anyway, regardless of what's

  # listed in util/*.num.

  IF[{- !$disabled{poly1305} -}]

    PROGRAMS_NO_INST=poly1305_internal_test

  ENDIF