https://stackoverflow.com › questions › 5559250

You'll need to specify both files, something like: gcc testpoint.c point.c. ...so that it knows to link the functions from both together. With the code as it's written right now, however, you'll then run into the opposite problem: multiple definitions of main.

https://stackoverflow.com › questions › 8024440

I get the error: main.o(.text+0x1ed): In function `main': : undefined reference to `avergecolumns'. collect2: ld returned 1 exit status. when I gcc *.o. I'm not quite sure what causes this error. Other posters have explained it as the function is not found or the function is empty.

https://openclassrooms.com › forum › sujet › undefined-reference-to-ma-fonction-en-c-36182

Si tu coche uniquement la cible release, et que tu compile en mode debug, par exemple, ben ton fichier ne sera pas compilé. Après, c'est à toi de voir, si tu as besoin d'utiliser le débugger, tu n'as pas le choix, tu dois compiler en debug.

https://thelinuxcode.com › undefined-reference-function-c

Undefined reference errors in C occur when a function declaration doesn‘t match its corresponding definition. This happens due to: Typos in function names ; Forgetting to define declared functions; Definitions residing in separate unsourced files; Missing libraries during linking

https://riptutorial.com › c › example › 12342 › undefined-reference-errors-when-linking

One of the most common errors in compilation happens during the linking stage. The error looks similar to this: $ gcc undefined_reference.c. /tmp/ccoXhwF0.o: In function `main': undefined_reference.c:(.text+0x15): undefined reference to `foo'. collect2: error: ld returned 1 exit status.

https://www.developpez.net › forums › d2057214 › c-cpp › c › probleme-erreur-undefined-reference...

J'ai un problème d'erreur sur mon programme sur Codeblocks. J'ai essayé de réinstaller Codeblocks mais ça ne marche pas. À la ligne 9, ça me met « undefined reference to 'intervalle' » et ça à chaque fonction. Merci d'avance.

https://towardsdev.com › navigating-undefined-reference-errors-in-programming-causes-and...

An undefined reference error occurs during the linking phase of compilation when the compiler can’t locate the definition of a function or variable declared elsewhere. Potential Causes: Missing Function Definitions: If a function is declared but not defined, the linker can’t find its implementation.

https://www.geeksforgeeks.org › fix-undefined-reference-error-in-cpp

Fix Undefined Reference Errors in C++. Below are some practical situations of undefined reference errors and the solution to fix them: 1. Define the Function and Variables. Undefined reference errors are mostly caused due to missing function definitions.

https://stackoverflow.com › questions › 20020776

You're missing a close bracket } at the end of your multiFib function. You have an extra close bracket } at the end of your singleFib function. The function main should have return type int.

https://arduino.stackexchange.com › questions › 89192 › undefined-reference-to-function-in...

Calling functions from an array of pointers in a library causes 'undefined reference to' error