I need to install "FFTW2" in my cygwin, but after I write "./configure" system shows the following error:
address@hidden ~/fftw-2.1.5
$ ./configure
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking type prefix for installed files... (none)
checking for vendor's cc to be used instead of gcc... checking for cc... cc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.exe
checking for suffix of executables... .exe
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether cc accepts -g... yes
checking for cc option to accept ISO C89... none needed
checking for style of include used by make... GNU
checking dependency style of cc... gcc3
checking whether we are using gcc 2.90 or later... yes
checking whether make sets $(MAKE)... (cached) yes
checking for ranlib... ranlib
checking whether ln -s works... yes
checking build system type... ./config.guess: unable to guess system type
This script, last modified 2003-02-22, 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
If the version you run (./config.guess) is already up to date, please
send the following data and any information you think might be
information to handle your system.
config.guess timestamp = 2003-02-22
uname -m = x86_64
uname -r = 2.9.0(0.318/5/3)
uname -s = CYGWIN_NT-10.0
uname -v = 2017-09-12 10:18
/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 = 2.9.0(0.318/5/3)
UNAME_SYSTEM = CYGWIN_NT-10.0
UNAME_VERSION = 2017-09-12 10:18
configure: error: cannot guess build type; you must specify one