-`--with-gmp[=DIR]'
-
- If you wish to use GMP library for arbitrary precision arithmetic
-library instead of using the MPI library included in the package, you can
-give the --with-gmp[=DIR] option to the `configure'. The DIR is the upper
-path in your system which contains lib/ and include/ for GMP library.
- Note that MPI is the prefered arbitrary precision arithmetic library and
-GMP can be used as a fall-back if you have problems with the MPI library
-included within this package (GMP was used as a default library in the past).
-
-'--with-iconv[=DIR]'