$ ./configure --prefix=$DIR/grib2
checking build system type... acaux/config.guess: unable to guess system type
This script, last modified 2003-06-17, has failed to recognize
the operating system you are using. It is advised that you
download the most up to date version of the config scripts from
ftp://ftp.gnu.org/pub/gnu/config/
If the version you run (acaux/config.guess) is already up to date, please
send the following data and any information you think might be
pertinent to <address@hidden> in order to provide the needed
information to handle your system.
config.guess timestamp = 2003-06-17
uname -m = x86_64
uname -r = 2.2.1(0.289/5/3)
uname -s = CYGWIN_NT-6.1
uname -v = 2015-08-20 11:42
/usr/bin/uname -p = unknown
/bin/uname -X =
hostinfo =
/bin/universe =
/usr/bin/arch -k =
/bin/arch = x86_64
/usr/bin/oslevel =
/usr/convex/getsysinfo =
UNAME_MACHINE = x86_64
UNAME_RELEASE = 2.2.1(0.289/5/3)
UNAME_SYSTEM = CYGWIN_NT-6.1
UNAME_VERSION = 2015-08-20 11:42
configure: error: cannot guess build type; you must specify one
but still have same problem.