Omnet++ 5.0 fails to configure/make. Unable to launch Omnetpp IDE. Windows

[WN]

Hi guys,

Attached is a screencap of the mingwev console output. Directory: C:\omnetpp-5.0-src-windows\omnetpp-5.0

I have read about issues in this forum with previous installations of omnet 4.6. I have deleted all installations of omnet before trying this.

What can i do to fix this and get oment 5 working :( ? 

I believe it is to do with my bin directory & make file?? But there is no documentation on how to address this that i can find. I'm very new to the world of Omnet++.  

Thanks. 

Below i will paste the screenshot for those not wanting to look at the image:

Welcome to OMNeT++ 5.0!

Type "./configure" and "make" to build the simulation libraries.

When done, type "omnetpp" to start the IDE.

/c/omnetpp-5.0-src-windows/omnetpp-5.0$ . setenv

bash: setenv: No such file or directory

/c/omnetpp-5.0-src-windows/omnetpp-5.0$ ./configure

checking build system type... i686-pc-mingw32

checking host system type... i686-pc-mingw32

configure: -----------------------------------------------

configure: reading configure.user for your custom settings

configure: -----------------------------------------------

checking for clang... clang

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 clang accepts -g... yes

checking for clang option to accept ISO C89... unsupported

checking for clang++... clang++

checking whether we are using the GNU C++ compiler... yes

checking whether clang++ accepts -g... yes

checking for clang++... clang++

checking for ranlib... ranlib

checking whether clang++ supports -std=c++11... yes

checking whether clang++ supports -fno-stack-protector... yes

checking whether clang++ supports -Wl,--no-as-needed... yes

checking whether clang++ supports -Wl,--as-needed... yes

checking for swapcontext... no

checking if shared libs need -fPIC... no

checking for dlopen with CFLAGS="" LIBS=""... no

checking if --export-dynamic linker option is supported/needed... test failed

checking for flags needed to link with static libs containing simple modules...                                                      --whole-archive

configure: NOTE: Use the following syntax when linking with static libraries

configure: containing simple modules and other dynamically registered components                                                     :

configure:    clang++ ... -Wl,--whole-archive <libs> -Wl,--no-whole-archive ...

checking whether linker supports -rpath... yes

checking for bison... bison -y

checking for flex... flex

checking lex output file root... configure: error: cannot find output from flex;                                                      giving up

/c/omnetpp-5.0-src-windows/omnetpp-5.0$ make

Makefile:36: Makefile.inc: No such file or directory

Makefile:40: *** OMNETPP_BIN_DIR must be correctly set.  Stop.

/c/omnetpp-5.0-src-windows/omnetpp-5.0$ omnetpp

bash: omnetpp: command not found