Porting embedded SQL from Oracle to Postgres

I am getting an error when attempting to compile using ecpg.

ERROR: syntax error at or near "TYPE"

This code was originally written for Oracle using Pro*/C

from header:

#define RAW_BUFFER_SIZE 524287
typedef struct {   long len;   char buffer[RAW_BUFFER_SIZE];
} internalCompiledData_t;

from .pgc :

EXEC SQL TYPE internalCompiledData_t is LONG VARRAW(RAW_BUFFER_SIZE);

static internalCompiledData_t compiledData;



It appears that the syntax EXEC SQL TYPE .. is ... ; is Oracle specific, is 
there a matching syntax for ecpg?
Or possibly a different way to achieve this datatype equivalencing?

Thanks in advance.
Daniel.

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