Linker Error Undefined Reference To Static Variable
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Undefined Reference To Static Member Variable C++
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Undefined Reference To Static Function
Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Undefined reference to static variable [duplicate] undefined reference to private static variable up vote 8 down vote favorite 4 Possible Duplicate: C++: undefined reference to static class member I'm using MinGW. Why static variable is not working [Linker error] undefined reference to `A::i' #include
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Multiple Definition Of Static Variable C++
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us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just http://stackoverflow.com/questions/14331469/undefined-reference-to-static-variable like you, helping each other. Join them; it only takes a minute: Sign up static variable link error [duplicate] up vote 31 down vote favorite 1 This question already has an answer here: What is an undefined reference/unresolved external symbol error and how do I fix it? 25 answers I'm writing C++ code on a mac. http://stackoverflow.com/questions/9282354/static-variable-link-error Why do I get this error when compiling?: Undefined symbols for architecture i386: "Log::theString", referenced from: Log::method(std::string) in libTest.a(Log.o) ld: symbol(s) not found for architecture i386 clang: error: linker command failed with exit code 1 (use -v to see invocation) Not sure if my code is wrong or I have to add additional flags to Xcode. My current XCode configurations are the default ones for a 'static library' project. My code: Log.h------------ #include
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site http://stackoverflow.com/questions/5603101/resolving-a-linker-error-undefined-reference-to-static-class-members About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Resolving a linker error: undefined reference undefined reference to static class members up vote 4 down vote favorite My code is Arduinoish. I turned on verbose compiling so I could verify that all the .o files are indeed getting passed to the linker correctly, and they are (linker command below). This leads me to believe that it is some sort of syntax error. Googling for the error "undefined reference to in undefined reference to function" produces a lot of results with answers like "add foo.o to your linker command like so", etc. I hope the solution is as simple as a missing dot or -> somewhere. I'm getting this series of errors in one file, from the linker: SerialServoControl.cpp.o: In function `SerialServoControl::send(int, int)': SerialServoControl.cpp:31: undefined reference to `SerialServoControl::_serial' SerialServoControl.cpp:31: undefined reference to `SerialServoControl::_serial' SerialServoControl.cpp.o: In function `SerialServoControl::init(char, char)': SerialServoControl.cpp:9: undefined reference to `SerialServoControl::_tx' SerialServoControl.cpp:10: undefined reference to `SerialServoControl::_rx' The .h file: #ifndef SERIALSERVOCONTROL_H #define SERIALSERVOCONTROL_H #include "NewSoftSerial.h" class SerialServoControl { public: // rx, tx static NewSoftSerial _serial;//(9, 8); int _servo_id; static char _tx; static char _rx; static void init(char tx, char rx); static void send(int servo_id, int angle); void setup(int servo_id); void set(int spot); }; #endif and the .cpp file: #ifndef SERIALSERVOCONTROL_CPP #define SERIALSERVOCONTROL_CPP #include "WProgram.h" #include "SerialServoControl.h" //static void SerialServoControl::init(char tx, char rx){ _tx = tx; _rx = rx; _serial = NewSoftSerial(rx, tx); _serial.begin(9600); } //static void SerialServoControl::send(int servo_id, int angle){ unsigned char buff[6]; int temp = angle & 0x1f80; char pos_hi = temp >> 7; char pos_low = angle & 0x7f; buff[0] = 0x80; // start byte buff[1] = 0x01; // device id buff[2] = 0x0