麻烦编译libfirmataplus

Question

未定义参考我在安装libfirmataplus下载在我的Ubuntu，但我不能用它编译：

g++ -I/usr/local/include/firmataplus/ Servo.cpp -larduino -lfirmataplus -lfirmataplus_servo 

Unforunately错误并非来自从库我的代码UT的.so

/usr/local/lib/libfirmataplus_servo.so: undefined reference to `Firmata::setPwmPin(unsigned char, short)' 
/usr/local/lib/libfirmataplus_servo.so: undefined reference to `Firmata::openPort(char const*, int)' 
/usr/local/lib/libfirmataplus_servo.so: undefined reference to `Firmata::openPort(char const*)' 
/usr/local/lib/libfirmataplus_servo.so: undefined reference to `Firmata::Firmata()' 
/usr/local/lib/libfirmataplus_servo.so: undefined reference to `Firmata::~Firmata()' 
/usr/local/lib/libfirmataplus_servo.so: undefined reference to `Firmata::closePort()' 
collect2: error: ld returned 1 exit status 

这里是我试图编译的代码：（来自实施例采取）

#include <iostream> 
#include <firmataservo.h> 
#include <stdlib.h> 

int main(int argc, char** argv) { 
    if (argc < 2) { 
    fprintf(stderr,"Usage: %s <serial port path> [pin]\n",__FILE__); 
    exit(1); 
    } 
    char* serial = argv[1]; 
    int pin=2; 
    if (argc == 3) { 
    pin = atoi(argv[2]); 
    } 
    ServoFirmata* sf = new ServoFirmata(); 
    if (sf->openPort(serial) != 0) { 
    fprintf(stderr,"sf->openPort(%s) failed: exiting\n",serial); 
    sf->destroy(); 
    exit(2); 
    } 
    int origPos = sf->getServoPosition(pin); 
    for(int i=SF_POS_MIN; i<SF_POS_MAX; i+=10) { 
    printf("Setting servo on pin %d to position %d\n",pin,i); 
    sf->setServoPosition(pin,i); 
    sleep(1); 
    } 
    printf("Resetting servo on pin %d to position %d\n",pin,origPos); 
    sf->setServoPosition(pin,origPos); 
    sf->destroy(); 
    return 0; 
} 

Answer 1

修正奥德图书馆的R：而载入共享库错误：libfirmataplus_servo.so.0：

g++ -I/usr/local/include/firmataplus/ Servo.cpp -larduino -lfirmataplus_servo -lfirmataplus