[lwip-users] [lwip] Multiple declaration error

[Earle Clubb]

When I try to compile the lwIP stack, I get an error about multiple
definitions of PACK_STRUCT_STRUCT.  This is defined in about 10 different
places such as the structures below:

struct icmp_echo_hdr {
  PACK_STRUCT_FIELD(u16_t _type_code);
  PACK_STRUCT_FIELD(u16_t chksum);
  PACK_STRUCT_FIELD(u16_t id);
  PACK_STRUCT_FIELD(u16_t seqno);
} PACK_STRUCT_STRUCT;

struct icmp_dur_hdr {
  PACK_STRUCT_FIELD(u16_t _type_code);
  PACK_STRUCT_FIELD(u16_t chksum);
  PACK_STRUCT_FIELD(u32_t unused);
} PACK_STRUCT_STRUCT;

struct icmp_te_hdr {
  PACK_STRUCT_FIELD(u16_t _type_code);
  PACK_STRUCT_FIELD(u16_t chksum);
  PACK_STRUCT_FIELD(u32_t unused);
} PACK_STRUCT_STRUCT;

Should they be commented out or is there a reason for the multiple
definitions?

Thanks.

Earle Clubb

Software Engineer
Valcom, Inc.

E-mail: address@hidden
Voice: (540) 563-2000 ext.253

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