cmake failing under Cygwin?

[lonnietc]

Hello,

I am trying to build EncFS under Cygwin and think that I have everything installed correctly but keep running into this error:

-- Performing Test HAVE_STD_REGEX
-- Performing Test HAVE_STD_REGEX
-- Performing Test HAVE_STD_REGEX -- failed to compile
-- Performing Test HAVE_GNU_POSIX_REGEX
-- Performing Test HAVE_GNU_POSIX_REGEX
-- Performing Test HAVE_GNU_POSIX_REGEX -- failed to compile
-- Performing Test HAVE_POSIX_REGEX
-- Performing Test HAVE_POSIX_REGEX
-- Performing Test HAVE_POSIX_REGEX -- failed to compile
CMake Error at vendor/github.com/google/benchmark/CMakeLists.txt:229 (message):
  Failed to determine the source files for the regular expression backend

I cannot seem to determine what is missing.

Any suggestions would be helpful.
Thanks