fa0938a Use pattern #elif defined(identifier)

6 files Authored by lslebodn 10 years ago, Committed by jhrozek 10 years ago,
    Use pattern #elif defined(identifier)
    
    We had in source code following pattern #elif HAVE_<name>
    It worked because undefined identifier(in some cases) was evaluated to 0.
    But we do not care about value of HAVE_SOMETHING. We just need to know
    whether identifier was defined.
    
    There is not equivalent to #ifdef (short for of #if definded)
    We need to use long form: #elif defined HAVE_<name>
    
    It causes also compiler warning with enabled compiler flag -Wundef.
    
    Reviewed-by: Pavel Reichl <preichl@redhat.com>
    
        
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