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Undefined Reference Error In C

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What was the first operating system to feature a separate kernel? Join Date Jul 2007 Location The Bavarian Alps Beans 129 DistroKubuntu 7.10 Gutsy Gibbon compiling with gcc and "undefined reference to xxx" I have run up against a wall. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. And as @bko pointed out, wrap your header files into something like this #ifndef _MY_LIBRARY_H_ #define _MY_LIBRARY_H_ ... // all your header contents ... #endif You'll have multiple places that use check over here

Thank you Neill What are the compilation and linking commands you do to produce vclient? number: %d - %d \n",i+1,multiFib(i),singleFib(i,1,1)); } getch(); return 0; } int multiFib(int x){ if (x<2){ return 1; } else{ return multiFib(x-2)+multiFib(x-1); } int singleFib(int x,int a,int b){ if (x<2){ return 1; Surely you can take that one file into more than one file? 06-25-2011 #11 andereasmehdi View Profile View Forum Posts Registered User Join Date Jun 2011 Posts 10 hi @MK27: thanks How do we play with irregular attendance?

How To Solve Undefined Reference Error In C

Whenever you have multiple files, they all need to be specified when compiling in order to resolve external references, as is the case here. I mess about for weeks and you solve the problem in 5 minutes. test.c #include main() { printf("Linuxquestions.org\n"); } so it seems I did something correct. It's not portable. –Jack Nov 16 '13 at 16:34 This code is a good (or merely bad) example where proper indentation would have made the error immediately obvious. –Jens

  • By DaMunky89 in forum Windows Programming Replies: 6 Last Post: 01-16-2011, 11:29 AM Weird compile error "(.text+0x32): undefined reference to `cubeByReference'" By yougene in forum C Programming Replies: 4 Last Post:
  • It's declared in x509.h typedef struct psGeneralNameEntry { psPool_t *pool; enum { GN_OTHER = 0, // OtherName GN_EMAIL, // IA5String GN_DNS, // IA5String GN_X400, // ORAddress GN_DIR, // Name GN_EDI, //
  • in src folder there are 18 c files and 8 .h files.
  • You have to do "-lm" to access functions like sqrt().
  • But when I try to compile the file that I really want to use "vclient.c" I get an error message /tmp/ccuuPxtN.o(.text+0x3bc): In function `main': vclient.c: undefined reference to `initLog' Now as

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 " Right now i am using gcc Main.c -o Main –dimitris93 May 2 '15 at 4:49 2 @Shiro gcc Main.c Person.c -o Main –user3528438 May 2 '15 at 4:52 Are you new to LinuxQuestions.org? Undefined Reference Error In C Compilation That's why I quoted the list you had of them, with only one file in it.

And it builds and runs fine locally, I can program the device etc. Does the reciprocal of a probability represent anything? Check out this tutorial on makefiles: Make File Tutorial It helps to automate this process. could you please help me to compile these codes.

up vote 2 down vote favorite I have to build a library for a school project and use that library in a small aplication. C Undefined Reference To Variable Usually this is done through a Makefile. hi i use cyqwin machine and i am new in linux. The value was optimized to encoding 3 words * at a time (trigrams). */ for (; *key != Vocab_None; key ++) { i += (i << 12) + *key; } return

C Undefined Reference To Function In Header File

Join them; it only takes a minute: Sign up undefined reference to function error in c up vote 2 down vote favorite #include int singleFib(int x,int a,int b); int multiFib(int This means * that all data type used as arguments to the Array template * need to provide an initializer that accepts 0 as a single argument. */ template How To Solve Undefined Reference Error In C However, when I do this on the webIDE. Undefined Reference To A Function C++ Minimum of a function on an open interval Print some JSON What does this ice key do?

Here's the header file, point.h: //type for a Cartesian point typedef struct { double x; double y; } Point; Point create(double x, double y); Point midpoint(Point p, Point q); And here's http://centralpedia.com/undefined-reference/undefined-reference-to-error-in-gcc.html fraction line in French Instruments that don't require hand strength How can I make two cutting lines close to each other? They didn't when I tried it and obviously also when Brett did try, and I haven't checked since - so it's a bit of both But the feeling that this was dwk Seek and ye shall find. C Undefined Reference To Pthread_create

Tic Tac Toe - C++14 Die Liebe höret nimmer auf How much more than my mortgage should I charge for rent? 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. Can you not make a smaller example that fails in the same way? this content Is this intentional? @mdma @BDub ScruffR 2015-10-01 20:23:10 UTC #16 Hmm!

test.c #include main() { printf("Linuxquestions.org\n"); } so it seems I did something correct. Undefined Reference To Function Error In C++ Player claims their wizard character knows everything (from books). Registration is quick, simple and absolutely free.

acer_peri View Public Profile View LQ Blog View Review Entries View HCL Entries Find More Posts by acer_peri 05-27-2004, 11:46 PM #2 herbc Member Registered: May 2004 Location: United

skelly View Public Profile View LQ Blog View Review Entries View HCL Entries Visit skelly's homepage! Code: LHa........er myIter; LOL...pwn3d by the filter! 06-26-2011 #14 andereasmehdi View Profile View Forum Posts Registered User Join Date Jun 2011 Posts 10 LOL Here is the Line that makes the I've spent about a week trying to figure out why I could not get anything useful out of curses/ncurses. C Undefined Reference To Library Function I am getting confused.

I don't have 2 libraries to include. share|improve this answer edited Feb 28 '13 at 17:20 answered Feb 28 '13 at 16:58 Mike 22.4k1262126 It's my fault, I've edited the post so it's now accurate. Adv Reply February 14th, 2011 #3 MadCow108 View Profile View Forum Posts Private Message I Ubuntu, Therefore, I Am Join Date Apr 2009 Location Germany Beans 2,134 DistroUbuntu Development Release have a peek at these guys asked 1 year ago viewed 11308 times active 1 year ago Linked 14 What does the “undefined reference to varName” in C mean? 0 Building my own library with unitests complains

Join our community today! Getting started with C or C++ | C Tutorial | C++ Tutorial | C and C++ FAQ | Get a compiler | Fixes for common problems Thread: Can't Compile a code!!! Sometimes I feel that I understand things, turn the corner and find that there is even more to understand. Join Date Jul 2007 Location The Bavarian Alps Beans 129 DistroKubuntu 7.10 Gutsy Gibbon Re: compiling with gcc and "undefined reference to xxx" Thank you MadCow108.

Not the answer you're looking for? you had to go look for documentation that you wouldn't find in a "programming C" reference), then you'll probably have to tell the compiler to link in that library explicitly. How to make Skyscanner, Kiwi, Kayak include ground transfer in the search In order to become a pilot, should an individual have an above average mathematical ability?