This is the Fedora MinGW project's OCaml cross-compiler.

For more about the Fedora MinGW project see:
  https://fedoraproject.org/wiki/MinGW

For more about OCaml see:
  http://caml.inria.fr/

This is a native Fedora compiler which generates Windows executables.
Along with the other mingw32-ocaml-* packages (libraries) you can
cross-compile complicated OCaml software, including GUI apps, to
Windows.

Integration with autotools, autoconf
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The compiler is called 'i686-pc-mingw32-ocamlopt' (along with a few
other tools prefixed with i686-pc-mingw32-*).  Because the compiler is
a native Fedora binary, it is installed in /usr/bin.

The name was deliberately chosen to fit with the convention used by
autoconf so that you can write:

  AC_CHECK_TOOL( ...[ocamlopt]... )

Autoconf knows when cross-compiling to search for $target-tool, so the
above will look for i686-pc-mingw32-ocamlopt when cross-compiling.

Integration with ocamlfind, findlib
----------------------------------------------------------------------

To support parallel installations of the OCaml compiler and library,
we switch based on the ocamlfind configuration file.

Thus, to choose the cross-compiler, simply set this environment
variable (and export it):

  export OCAMLFIND_CONF=/etc/i686-pc-mingw32-ocamlfind.conf

After doing this, commands such as:

  ocamlfind ocamlc
  ocamlfind ocamlopt
  [etc.]

will automatically choose the cross-compiler and the correct cross-
compiled libraries.  For example:

  ocamlfind ocamlopt -package extlib -linkpkg test.ml -o test.exe

will produce a cross-compiled Windows binary using the extlib library.