我在让一组名为 libnifalcon 的特定驱动程序工作时遇到很多麻烦。 。
我很确定安装成功,但是当我尝试编译示例程序时,出现错误:
mars@marslab:~/Documents/libnifalcon-1.0/examples/findfalcons$ g++ findfalcons.cpp
/tmp/cc8TtfGn.o: In function `runFalconTest()':
findfalcons.cpp:(.text+0x6b): undefined reference to `libnifalcon::FalconDevice::FalconDevice()'
findfalcons.cpp:(.text+0xdd): undefined reference to `libnifalcon::FalconDevice::getDeviceCount(unsigned int&)'
findfalcons.cpp:(.text+0x1bd): undefined reference to `libnifalcon::FalconDevice::open(unsigned int)'
findfalcons.cpp:(.text+0x224): undefined reference to `libnifalcon::FalconDevice::isFirmwareLoaded()'
findfalcons.cpp:(.text+0x2ac): undefined reference to `libnifalcon::FalconFirmware::loadFirmware(bool, unsigned int const&, unsigned char*)'
findfalcons.cpp:(.text+0x33b): undefined reference to `libnifalcon::FalconDevice::isFirmwareLoaded()'
findfalcons.cpp:(.text+0x3dd): undefined reference to `libnifalcon::FalconDevice::runIOLoop(unsigned int)'
findfalcons.cpp:(.text+0x504): undefined reference to `libnifalcon::FalconDevice::runIOLoop(unsigned int)'
findfalcons.cpp:(.text+0x512): undefined reference to `libnifalcon::FalconDevice::close()'
findfalcons.cpp:(.text+0x52b): undefined reference to `libnifalcon::FalconDevice::~FalconDevice()'
findfalcons.cpp:(.text+0x53f): undefined reference to `libnifalcon::FalconDevice::~FalconDevice()'
/tmp/cc8TtfGn.o: In function `void libnifalcon::FalconDevice::setFalconFirmware<libnifalcon::FalconFirmwareNovintSDK>()':
findfalcons.cpp:(.text._ZN11libnifalcon12FalconDevice17setFalconFirmwareINS_23FalconFirmwareNovintSDKEEEvv[void libnifalcon::FalconDevice::setFalconFirmware<libnifalcon::FalconFirmwareNovintSDK>()]+0x1d): undefined reference to `libnifalcon::FalconFirmwareNovintSDK::FalconFirmwareNovintSDK()'
collect2: ld returned 1 exit status
如何验证库是否正确链接?如果他们不这样做我该怎么办?
最佳答案
您没有链接任何东西,即
g++ file.cpp
不链接到标准库以外的任何库。您需要链接其他模块或库,可能是 libnifalcon
g++ findfalcons.cpp -lnifalcon
或者...你可能需要做类似的事情
g++ -L/path/to/libnifalcon findfalcons.cpp -lnifalcon
where -I 告诉在哪里寻找库。
关于c++ - 如何验证链接库?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/18774760/