Re: Which build tool to use?

On Thu, Sep 17, 2015 at 11:59:25PM +0200, Gabriel Scherer [email protected] [ocaml_beginners] wrote:
> >
> > So far I've simply run `corebuild` (a simple wrapper around
> > `ocamlbuild`), but that leaves some build stuff in the source folder
> > (that sort of breaks with CMake's tradition of building
> > out-of-source).
> 
> 
> I'm fairly surprised by this, as ocamlbuild takes care to produce all
> target outputs in a separate folder (the _build subdirectory). Could
> you say more about what you are doing, what happens and what you
> expect?

Don't be surprised, I'm being unclear!

This is what I mean:  it won't let me decide where to build.

I have a large-ish C/C++ project that uses CMake to build.  In a
sub-subfolder I have put the OCaml source for a test utility
(`src/utils/tool/`).  Following CMake best practices I create a build
folder at the top of the project and run `cmake ..` in it to generate
make files.  This is what I need to hook into.  CMake has support for
what they call external projects[1], which is how I hook in the OCaml
building.  However, I haven't found any way of controlling where the
build artefacts end up, `corebuild` puts all stuff in
`src/utils/tool/_build/` whereas I want it somewhere under `_build` (to
follow the CMake example I want it in `_build/src/utils/tool`).

In short:

1. I run builds in `_build`
2. I want all built artefacts to end up under `_build`
3. I haven't found a way to make `ocamlbuild` build in that way

/M

[1]: http://www.cmake.org/cmake/help/v3.3/module/ExternalProject.html

-- 
Magnus Therning                      OpenPGP: 0xAB4DFBA4 
email: [email protected]   jabber: [email protected]
twitter: magthe               http://therning.org/magnus

Time is a great teacher, but unfortunately it kills all its pupils.
     -- Hector Louis Berlioz


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