Wireshark · Wireshark-dev: [Wireshark-dev] how to use wireshark source code?

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I add a file named peformance.h under wireshark  main directory,

peformance.h

#include <glib.h>

typedef struct peformance_s

{

gfloat time[100];

      gfloat delay[100];

guint32 packetSize[100];

guint32 payload;

guint32 index;

guint32 temp_size;

gfloat temp_time;

}peformance;

extern peformance* peformance_test;

then I modify the /epan/dissectors/packet-ieee80211.c,

#include "../../peformance.h"

then define the struct variable,

peformance pef_test;

peformance * peformance_test=&pef_test;

peformance_test->index=0;

when i execute "sudo make", it occurs to me one error ,below is the error information:

packet-ieee80211.c:94:30: error: ../../peformance.h: No such file or directory

packet-ieee80211.c:149: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'pef_test'

packet-ieee80211.c:150: error: expected '=', ',', ';', 'asm' or '__attribute__' before '*' token

packet-ieee80211.c:153: error: expected '=', ',', ';', 'asm' or '__attribute__' before '->' token

i want know why and how to fix it?