Dumme Frage zum Gyro MPU-6050

Hier die Fehlermeldung, wenn ich nur die BPM085.h includiere

Compiling 'FreeIMU_yaw_pitch_roll' for 'Arduino Mega 2560 or Mega ADK'
BMP085.cpp : : In member function 'bool BMP085::testConnection()':
BMP085.cpp : readByte(uint8_t&, int, uint8_t [2])'
I2Cdev.h : readByte(bool, uint8_t, uint8_t, uint8_t*, uint16_t)
BMP085.cpp : : In member function 'void BMP085::loadCalibration()':
BMP085.cpp : readBytes(uint8_t&, int, int, uint8_t [22])'
I2Cdev.h : readBytes(bool, uint8_t, uint8_t, uint8_t, uint8_t*, uint16_t)
BMP085.cpp : : In member function 'uint8_t BMP085::getControl()':
BMP085.cpp : readByte(uint8_t&, int, uint8_t [2])'
I2Cdev.h : readByte(bool, uint8_t, uint8_t, uint8_t*, uint16_t)
BMP085.cpp : : In member function 'void BMP085::setControl(uint8_t)':
BMP085.cpp : writeByte(uint8_t&, int, uint8_t&)'
I2Cdev.h : writeByte(bool, uint8_t, uint8_t, uint8_t)
BMP085.cpp : : In member function 'uint16_t BMP085::getMeasurement2()':
BMP085.cpp : readBytes(uint8_t&, int, int, uint8_t [2])'
I2Cdev.h : readBytes(bool, uint8_t, uint8_t, uint8_t, uint8_t*, uint16_t)
BMP085.cpp : : In member function 'uint32_t BMP085::getMeasurement3()':
BMP085.cpp : readBytes(uint8_t&, int, int, uint8_t [2])'
I2Cdev.h : readBytes(bool, uint8_t, uint8_t, uint8_t, uint8_t*, uint16_t)
Error compiling