How can I install OCaml with OPam on windows?

Question

How can I install OCaml with OPam on windows?

Answer 1

Windows 10   CygWin64   standard C toolchain   OCaml 4.02.3 + BuckleScript-1   **   WebAssembly spec/interpreter   compiling from source   OPam

install CygWin 64-bit setup-x86_64.exe
- choose your path (in the following abbreviated with cwd), everything else only default or next
- move the installer to cwd

install required packages for standard C toolchain from windows cmd prompt

cwd>setup-x86_64.exe -q -P wget -P gcc-g++ -P make -P diffutils -P libmpfr-devel -P libgmp-devel -P libmpc-devel

edit cwd/home\username\.bash_profile, add

export SHELLOPTS
set -o igncr

start via Icon Cygwin64 Terminal

choose your path for installing the BuckleScript git (in the following abbreviated with bwd)

cd /cygdrive/bwd
git config --global core.eol lf
git config --global core.autocrlf false
git clone --recursive https://github.com/bloomberg/bucklescript

(cloning to /cygdrive/bwd/bucklescript)

edit /cygdrive/bwd/bucklescript/.gittattribute, add

* text=auto  

choose your path for OCaml compiler to build (in the following abbreviated with owd)

configure and make

cd /cygdrive/owd/bucklescript/ocaml
./configure -prefix /owd
make world.opt
make install

install OPam

create switch (open issue, wait for answer)
compile bsc.exe (open issue, wait for answer)
install WebAssembly spec interpreter (WASM WAST switching)

issue WebAssembly/spec/interpreter/1052

... to be completed!