These cause "symbol redefinition" errors

[DanielLewisRandall]

From SMCWrapper.h:

typedef struct SMCKeyData_vers_t {
    char                  major;
    char                  minor;
    char                  build;
    char                  reserved[1];
    UInt16                release;
} SMCKeyData_vers_t;

typedef struct {
    UInt16                version;
    UInt16                length;
    UInt32                cpuPLimit;
    UInt32                gpuPLimit;
    UInt32                memPLimit;
} SMCKeyData_pLimitData_t;

typedef struct {
    UInt32                dataSize;
    UInt32                dataType;
    char                  dataAttributes;
} SMCKeyData_keyInfo_t;

typedef char              SMCBytes_t[32];

typedef struct {
    UInt32                  key;
    SMCKeyData_vers_t       vers;
    SMCKeyData_pLimitData_t pLimitData;
    SMCKeyData_keyInfo_t    keyInfo;
    char                    result;
    char                    status;
    char                    data8;
    UInt32                  data32;
    SMCBytes_t              bytes;
} SMCKeyData_t;

also:

typedef struct {
    UInt32Char_t            key;
    UInt32                  dataSize;
    UInt32Char_t            dataType;
    SMCBytes_t              bytes;
} SMCVal_t;

[DanielLewisRandall]

commenting them out makes the code build fine.