• Markus Armbruster's avatar
    qapi/types qapi/visit: Generate built-in stuff into separate files · cdb6610a
    Markus Armbruster authored
    Linking code from multiple separate QAPI schemata into the same
    program is possible, but involves some weirdness around built-in
    types:
    
    * We generate code for built-in types into .c only with option
      --builtins.  The user is responsible for generating code for exactly
      one QAPI schema per program with --builtins.
    
    * We generate code for built-in types into .h regardless of
      --builtins, but guarded by #ifndef QAPI_VISIT_BUILTIN.  Because all
      copies of this code are exactly the same, including any combination
      of these headers works.
    
    Replace this contraption by something more conventional: generate code
    for built-in types into their very own files: qapi-builtin-types.c,
    qapi-builtin-visit.c, qapi-builtin-types.h, qapi-builtin-visit.h, but
    only with --builtins.  Obey --output-dir, but ignore --prefix for
    them.
    
    Make qapi-types.h include qapi-builtin-types.h.  With multiple
    schemata you now have multiple qapi-types.[ch], but only one
    qapi-builtin-types.[ch].  Same for qapi-visit.[ch] and
    qapi-builtin-visit.[ch].
    
    Bonus: if all you need is built-in stuff, you can include a much
    smaller header.  To be exploited shortly.
    Signed-off-by: 's avatarMarkus Armbruster <armbru@redhat.com>
    Message-Id: <20180211093607.27351-21-armbru@redhat.com>
    Reviewed-by: 's avatarEric Blake <eblake@redhat.com>
    Reviewed-by: 's avatarMarc-André Lureau <marcandre.lureau@redhat.com>
    Reviewed-by: 's avatarMichael Roth <mdroth@linux.vnet.ibm.com>
    [eblake: fix octal constant for python 3]
    Signed-off-by: 's avatarEric Blake <eblake@redhat.com>
    cdb6610a
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