Windows compatibility

[kiliakis]

Windows compatibility can be achieved without having to effect any lines of code. The steps that have to be followed are:

1. Install cygwin64 (without any extra packages)
2. Install apt-cyg
3. Using a package_list.txt, the extra packages needed can be installed by typing bash apt-cyg install $(cat packege_list.txt)
4. Copy the correct .h, .dll in external/install/lib,include
5. add external/install/lib to the PATH variable
6. Ready to cmake, build, compile!

CMakeLists.txt needs some small modifications:

• cmake_minimum_required(VERSION 2.8.4) (to suppress some warnings)
• CXX_FLAGS -fPIC, -std=c++11 --> -mcmodel=large, -std=gnu++11
• Remove -D_GLIBCXX_DEBUG flag from debug flags (produces illegal instructions)
• link with hdf5, hdf5_hl, hdf5_cpp, hdf5_hl_cpp
• define the correct name for fftw library (either fftw3-3/fftw3/libfftw3-3/libfftw3)
• That's all :)

[kiliakis]

CYGWIN is true(1) when building with the cmake version of cygwin

[kiliakis]

BLonD-cpp is compatible with windows under cygwin