I have an existing project in OCaml and one _oasis file. I don't know where to enable the profiling flag for ocamlbuild.
I looked up Oasis manual and the code, and found there was a variable profile available in setup.data. I assume this was what Oasis auto generated.
Where and what should I include in _oasis to set profile to true ?
You can activate the ocamlbuild_more_args feature.
On top of your _oasis file:
AlphaFeatures: ocamlbuild_more_args
Then, in your Package:
XOCamlbuildExtraArgs: your_ocamlbuild_option
I can't find any -profile option in ocamlbuild though, so I'm not sure of what this is about. Also, this option is still quite unstable.
A better way to handle that would be to modify your _tags file accordingly. It is generated by oasis but you can modify it.
EDIT:
setup.data informs you of environment variables. As for profile, it shows if the -p option will be passed to ocamlopt. You can pass it using the NativeOpt field.