Meta-language to describe types in a language-independent way for a "C-API"

Is there a meta-language to describe types (structures/records, function types and their parameters ...) and constants that can be fed to a tool or that I can then write code for to create prototypes for multiple target languages? Note: (E)BNF is not even close to what I am looking for.

IDL looks closer to what I need, but those flavors I looked at didn't even cover systems that were not also object-oriented. Microsoft's M seems to be tied to .NET and the system I need it for is truly what one would usually describe as a "C-API". No fancy i开发者_JAVA百科nterface definitions or anything remotely object-oriented.

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OMG IDL provide documents describing the mapping of IDL constructs to a number of well known languages including C:

http://www.omg.org/technology/documents/idl2x_spec_catalog.htm