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Undefined Reference Error


thanks in advance=) Last edited on Aug 28, 2012 at 5:47pm UTC Aug 28, 2012 at 5:48pm UTC NwN (1276) Hi there, Have you compiled all of the cpp files? Strange device identification How strange is it (as an undergrad) to email a professor from another institution about possibly working in their lab? Is giving my girlfriend money for her mortgage closing costs and down payment considered fraud? "Full-time Employment is a Loophole in the Law to Make Wages Lower"? But it’s not magic – like all errors it means that you have done something wrong, in you code and/or your project’s configuration, and you need to take some time to this content

The solution is to link all the files together when creating the actual program binary. Don't you have a Hash.cpp to also compile and link? How do really talented people in academia think about people who are less capable than them? But it's a real question, so no closing. –Omnifarious Jan 28 '13 at 8:13 1 Sorry it's been almost a year since I last used c++.

Undefined Reference To C++ Error

I have a lib folder inside my main folder where I have the two XPM_lib.h and XPM_lib.c files. This is where the the linker comes in. Update your command to include the file which contains the definition of that function and it should work. but today I opened an old project and tried to compile it and I got this error: Undefined reference to 'intro()' Undefined reference to 'menu(int' I looked into the code and

  1. It's been around for a while I guess.
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  5. In order to do this you should include the lib directory into your path when building: gcc -I ./lib -c XPM_lib.c test.c gcc -o program XPM_lib.o test.o Note: "undefined reference to..."
  6. bko 2015-09-23 21:29:40 UTC #2 Hi @jersey99 Have you tried converting to #include library-helper/library-helper.h Includes are a bit inconsistent right now between all the compile strategies, since the web IDE puts
  7. For example: g++ -o main Hash.cpp main.cpp will create the main program called "main".
  8. Now, I have made the XPM_lib.h and XPM_lib.c files and also my test.c file.
  9. Camelcase and underscores are both good choice - i.e.
  10. Die Liebe höret nimmer auf Who was Mikael Blomkvist with at the end of the movie and why did Lisbeth hate it so much?

Essentially the problem is this: I have my library.cpp and library.h along with 20-30 other files (with directory structure flattened). The g++ program performs them both (it can do just one if you specify -c flags, or pass only .o files). Traditionally, linker technology has lagged behind compilers, mostly because it’s generally more fun to build a compiler than to build a linker. Undefined Reference To Static Variable C++ If that is true, it is a very valuable piece of information!!

you clicked on the library icon and say "yes, add to sketch") you get a separate directory with the name of library. What was the first operating system to feature a separate kernel? Why does Deep Space Nine spin? http://stackoverflow.com/questions/14803804/undefined-reference-compiler-error The compiler is giving me main.cpp:16: undefined reference to `translator::translator(std::istream&)' collect2: error: ld returned 1 exit status when I try to compile my program.

To avoid this problem, take some care when writing declarations and definitions, and remember that things like references, pointers and const all count towards making a function signature unique. C++ Undefined Reference To Function In Class I'm missing something stupid, and I've gone character by character but I can't find it. My files are (XPM_lib.h): #ifndef LIBRARYXPM_H_INCLUDED #define LIBRARYXPM_H_INCLUDED #include #include #include #define HEADER "/*XPM*/" #define STRING_BEGIN "static char *egc[] = {\n\n /*width , height , ncolors , charsperpixel */ \n " How to draw a clock-diagram?

Undefined Reference To Function C++

Specifically, they are for the first stage of compilation - the preprocessing. original site asked 3 years ago viewed 3823 times active 3 years ago Related 1810What are the differences between a pointer variable and a reference variable in C++?2compiling outdated c++ package: undefined reference Undefined Reference To C++ Error Do you want to help us debug the posting issues ? < is the place to report it, thanks ! C++ Undefined Reference To Class I get: ../../../build/target/user/platform-6/libuser.a(library.o): In function XXXXXXX(unsigned char*)':
XXX/XXXX.cpp:342: undefined reference toXXXX-function' Any help appreciated!

Cheers! news It does not matter which one because they are essentially identical. Partial sum of the harmonic series between two consecutive fibonacci numbers Are assignments in the condition part of conditionals a bad practice? is there a reason why the .cpp file for a class needs to have the class name prefixed on all method headers? C++ Undefined Reference To Constructor

If those answers do not fully address your question, please ask a new question. Disproving Euler proposition by brute force in C Print some JSON What game is the guard playing in this picture? Why is the size of my email so much bigger than the size of its attached files? have a peek at these guys To compile, I did: gcc -c .\lib\XPM_lib.c gcc -c test.c gcc -o program .\lib\XPM_lib.o test.o ( I forgot to mention !) My directory structure : .\lib\XPM_lib.h .\lib\XPM_lib.c .\test.c c gcc undefined-reference

Trying to compile my program via g++ -o prog1 main.cpp -std=c++0x I get the error: /tmp/cc1pZ8OM.o: In function `main': main.cpp:(.text+0x148): undefined reference to `Hash::insert(int, char)' collect2: error: ld returned 1 exit Linker Error Undefined Reference To Function In C Once I had these error messages, I found several issues with the stricter compiler settings on the Web IDE which complained a lot about psMalloc()/psRealloc()returningvoid* which is unsafe to convert into No new replies allowed.

Header files are for the compiler.

How can I make two cutting lines close to each other? Number sets symbols in LaTeX What do you call someone without a nationality? Mine, was mostly a way to try to fit it in here. C++ Undefined Reference To Winmain 16 Join them; it only takes a minute: Sign up How to solve “undefined reference to function” error?

Let me explain what I see: If you have a look here: github.com glowfishAPI/httpsclient-particle/blob/master/firmware/httpsclient-particle.h #include "application.h" #ifdef __cplusplus extern "C" { #endif #include "matrixsslApi.h" #define HTTPS_COMPLETE 1 #define HTTPS_ERROR -1 #define If two topological spaces have the same topological properties, are they homeomorphic? Here's my code: Main.cpp 1
#include "headers.h" int main() { intro(); menu(0); } headers.h 1
//all the #includes: #include #include "windows.h" #include #include #include // yes using http://centralpedia.com/undefined-reference/undefined-reference-to-error-in-gcc.html contact us Log In [solved] Undefined Reference error (linker error) when compiling from web IDE Firmware jersey99 2015-09-23 21:23:00 UTC #1 Hi Everybody, I have run into a linker issue while

Fixed the title. –Fox Jan 28 '13 at 8:39 add a comment| 5 Answers 5 active oldest votes up vote 15 down vote This error tells you everything: undefined reference toHash::insert(int, fraction line in French SXA Page Design vs Page Standard Values vs Page Branch Template How strange is it (as an undergrad) to email a professor from another institution about possibly If those answers do not fully address your question, please ask a new question. 1 That's not a compiler error. –chris Jan 28 '13 at 7:56 1 -1 for These are compiled separately, using the C++ compiler, to produce object code files (files with a .o or a .obj extension) which contain machine code.

BTW: After having a look at this work of art I feel a bit stupid having given some of the advise above .I didn't realize what caliber programmer you are jersey99 share|improve this answer answered Jan 28 '13 at 7:53 ForEveR 43.2k25690 add a comment| up vote 0 down vote This is not a compile error, it's a link error. For each new click of the circle-plus to add a .h and a .cpp file, you get a file in the directory with your current sketch. [Ah, I see @ScruffR beat Accept and hide this message /support/docs/3136.asp UbuntuCommunityAsk!DeveloperDesignDiscourseHardwareInsightsJujuShopMore ›AppsHelpForumLaunchpadMAASCanonical current community chat Ask Ubuntu Ask Ubuntu Meta your communities Sign up or log in to customize your list.

avergeColumns or averge_columns are both easier to spot than avergecolumns. –Aaron Dufour Nov 6 '11 at 3:17 add a comment| Not the answer you're looking for? The linker is normally a separate program from the compiler (for example, the GCC linker is called ld) but will normally be called for you when you use your compiler suite’s Why was Susan treated so unkindly? Solutions?

For details and our forum data attribution, retention and privacy policy, see here Here is my function's code(I'm trying to calculate the average of the column in 2D arrays): #include "my.h" void averagecolumns (int x, int y, int** a) { int i; int j; more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed Have a look here: This is the library I am developing: https://github.com/jersey99/httpsclient-particle Everything is in the firmware directory obviously.

Here's my code using namespace std; #include #include void encrypt(std::string &iostr, int key) { key %= 26; int ch; for (auto &it : iostr) { ch = tolower(it); if Does DFT produces the same output as FFT? Disproving Euler proposition by brute force in C What was that alien in Doctor Who that nobody saw? Hilbert-irreducible Banach space Before I leave my company, should I delete software I wrote during my free time?

Thanks very much again that worked Actually it is the same. Why do the Sparkfun and Adafruit Eagle libraries use smaller footprints than the manufacturer's recommended land pattern? more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed