Hans Ole Rafaelsen a écrit :
Hi
I'm trying to build a project using ocamlbuild with ocamlfind. One
submodule requires 'json-static' and another requires
'bitstring.syntax'. The preprocessors requires different syntaxes,
resulting in the following error:
ocamlfind: No unique value for the META variable 'preprocessor': package
camlp4 defines `camlp4', package bitstring.syntax defines `camlp4of'
Is there a way to make a myocamlbuild.ml file to select the preprocessor
to use on a submodule/file basis?
Yes. In the wiki plugin, you have lines such as:
flag ["ocaml"; "compile"; "syntax_"^syntax] & S[A"-syntax"; A syntax];
This means that the "-syntax foo" option will only be added if a package
"foo" exists AND your compiled file (i.e. ".ml") has tag "syntax_foo".
So, just tag your files, but not two files with two syntax tags.
On a similar topic: Is it possible to tell ocamlbuild to use another
file than myocamlbuild.ml for additional build instructions? At the
moment I have a makefile that changes links to different files, but I'm
not happy too with this method.
Unfortunately, not yet.
--
Romain Bardou
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