undefined reference to '__objc_class_name_Fraction'

undefined reference to '__objc_class_name_Fraction'

Content Index :

undefined reference to '__objc_class_name_Fraction'
Tag : objective-c , By : bikefixxer
Date : November 24 2020, 05:44 AM

No Comments Right Now !

Boards Message :
You Must Login Or Sign Up to Add Your Comments .

Share : facebook icon twitter icon

Error Message: undefined reference to 'printHeader()' & undefined reference to 'calculateArea(double&)'

Tag : function , By : usingtechnology
Date : March 29 2020, 07:55 AM
hope this fix your issue This error is the compiler telling you that you have declared some functions that have not been defined. If you look at your function prototypes:
// Aquire radius value
// Postcondition: print out header and return radius value
double printHeader();

// Precondition: radius has been entered
// Postcondition: calculate and print out area of the circle
void calculateArea(double& radius);
double printHeader(double& radius) { ... }

void calculateArea(double& radius, double area) { ... }
double printHeader(double& radius);
void calculateArea(double& radius, double area);

(.text+0x20): undefined reference to `main' and undefined reference to function

Tag : c , By : Cosmin
Date : March 29 2020, 07:55 AM
will be helpful for those in need I am having issue getting my makefile to work without errors. The first issue i have is with an undefined reference to main. I have main in my producer.c file as a function. The second issue is an undefined reference to SearchCustomer(). , This rule
main: producer.o consumer.o AddRemove.o
   $(COMPILER) -pthread $(CCFLAGS) -o producer.o consumer.o AddRemove.o
main: producer.o consumer.o AddRemove.o
   $(COMPILER) -pthread $(CCFLAGS) -o $@ producer.o consumer.o AddRemove.o
main: producer.o consumer.o AddRemove.o
   $(COMPILER) -pthread $(CCFLAGS) -o $@ $^

main.c:19: undefined reference to `usbInit' & undefined reference to `usbPoll'

Tag : development , By : Matt
Date : March 29 2020, 07:55 AM
wish helps you i guess you have forgotten to add the usbdrv-c files to your makefile or may be they are already compiled and you have to add them as a lib to your make file. (But afair with v-usb you have to add c-files)
Please read the documentation of the library and look at the numerous examples that are available for v-usb.

undefined reference to `vtable for ' namespace inheritance undefined reference to `typeinfo for

Tag : cpp , By : user150694
Date : March 29 2020, 07:55 AM
should help you out The problem is, that you have to define every function you declare. That's why the compiler is complaining, you are not defining anything for draw, move or scale.
If you want Figure to be a complete abstract class (which I think this is what you are trying to do), you can set those function to 0, so you don't have to define them, but the derived classes have to implement them.
//Now you don't need to implement them
virtual void draw() = 0;
virtual void move() = 0;
virtual void scale(double) = 0;

undefined reference to `yylex' && undefined reference to `yyin'

Tag : cpp , By : mansoor
Date : March 29 2020, 07:55 AM
this one helps. I'm trying to use flex and bison to create a compiler. But i receive errors when i try to compile. , Collecting my comments into an answer.
There are two problems:
// Your includes...
int yyFlexLexer::yywrap() { return 1; }

// Add definition of yyin
std::istream* yyin;
Related Posts Related QUESTIONS :
  • shouldPerformSegueWithIdentifier always executed first
  • How to make a Swift enum available in Objective-C?
  • VSCode show `unrecognized token` for Objective-C header file
  • How to get data out of a block?
  • How to fix Zombie Object throwing 'EXC_BAD_INSTRUCTION' when calling show window
  • How to keep checking a value until it changes without using infinite loop?
  • (Objective-C++) Testing float value causes infinite loop
  • Use of macro with condition in swift
  • How to stop sending requests to dispatch_async requests for ringing?
  • Implicit conversion loses integer precision: 'NSInteger' (aka 'long') to 'int'
  • Diffable data source for TableView error on iOS 13: Inconsistent associations for moves
  • Objective C: How to get access token from web browser to cocoa app?
  • App crashes while converting to Objective-C ARC
  • When updating the TestFlight SDK do you need to delete the old version?
  • Issue overriding the default constructor of the UIButton Class?
  • NSData to NSArray of UInt16 in Objective C
  • How to read file by sector,and not rely on the OS cache in Cocoa
  • Why doesn't strlen() return the correct number of bytes here?
  • Why the main queue in iOS has to be a serial dispatch
  • AWS API Gateway unreliability in refresh
  • Sending dictionary from a VC to another VC through Custom delegtes
  • Convert from NStimeInterval to CMTime accurately
  • How can I continue my count from the correct spot once I load the saved count?
  • instance method 'connect:' not found (return type defaults to 'id'
  • Does an object initialize automatically if it is the synthesized property of another object?
  • Algorithm to group consecutive words minimizing length per group
  • Unable to add UIScrollView to UITableView
  • What reasons are there to pass an argument to an initializer in objective C?
  • NSLogging UILabel's text outputs null
  • NSOutlineview with checkbox
  • Accessing Property from another NSObjectClass
  • Implementing background worker - Obj C/Cocoa
  • Move UIView above UITableView when user Scrolls Down
  • Getting warning assigning a const void * to a char * array
  • adding object to nsmutablearray with custom delegate function giving error
  • Cocoa editing NSBezierPath
  • How to set custom title letters spacing for UINavigationBar in Objective-C
  • Can't access CCNode as child of scene
  • load local json information in UITableView
  • how to convert date and time string to date string?
  • NSButton rendering issues when displayed over NSImageView
  • NSComboBox to display duplicate items in different colors
  • How to set transparency of translucent navigation bar in iOS7?
  • Return 1 in objective-c
  • UIPAGEVIEWCONTROLLER Datasource methods called Twice on Fast Swipe
  • NSMutableData allocation performance
  • Does anything in Objective-C use associative references under the hood?
  • Perform a action on specific time using Parse
  • Objective-C: How to convert json value to BOOL?
  • How to make an int counter for the days
  • Assigning Label Value with Selected Table View Cell
  • SpriteKit - Preloader using GCD
  • Can dependency injection like Typhoon replace multiple singletons?
  • Objective C - How to determine if a folder is a package?
  • How can one draw a background in the elastic portion of an NSScrollView?
  • A solution for my issue with sending some info from an array to Parse
  • Swift Extension fails adding overloaded methods to Objective-C class
  • Determine if key is incorrect with CCCrypt kCCOptionPKCS7Padding-Objective C
  • How set value to custom object property which is as property from another custom object
  • PQgetResult always returns NULL
  • shadow
    Privacy Policy - Terms - Contact Us © scrbit.com