Gcc Link Error Undefined Reference
Contents |
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 linking error undefined reference to function site About Us Learn more about Stack Overflow the company Business Learn more
Undefined Reference To Function C++
about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss linker error undefined reference to Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up linker woes - gcc undefined reference to function undefined reference up vote 7 down vote favorite 4 I'm having a problem with my compiler telling me there is an 'undefined reference to' a function I want to use in a library. Let me share some info on the problem: I'm cross compiling with gcc for C. I am calling a library function which is accessed through an included header which includes another
Undefined Reference To C
header, which contains the prototype. I have included the headers directory using -I and i'm sure it's being found. I'm first creating the .o files then linking them in a separate command. So my thought is it might be the order in which I include the library files, but i'm not sure what is the correct way to order them. I tried with including the headers folder both before and after the .o file. Some suggests would be great, and maybe and explanation of how the linker does its thing. Thanks! Response to answers there is no .a library file, just .h and .c in the library, so -l isn't appropriate my understanding of a library file is that it is just a collection of header and source files, but maybe it's a collection of .o files created from the source?! there is no library object file being created, maybe there should be?? Yes seems I don't understand the difference between includes and libraries...i'll work on that :-) Thanks for all the responses! I learned a lot about libraries. I'd like to put all the responses as the accepted answer :-) gcc
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings undefined reference c++ and policies of this site About Us Learn more about Stack Overflow g++ undefined reference to the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation
Ld Undefined Reference To Function
Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it http://stackoverflow.com/questions/143530/linker-woes-undefined-reference only takes a minute: Sign up Link error “undefined reference to `__gxx_personality_v0'” and g++ [duplicate] up vote 52 down vote favorite 12 Possible Duplicate: Undefined Symbol ___gxx_personality_v0 on link I have a problem with the following program. // fkt.cpp #include "fkt.h" int add2(int a, int b) { return a+b; } And the header: // fkt.h int add2(int a, int b); Now http://stackoverflow.com/questions/6045809/link-error-undefined-reference-to-gxx-personality-v0-and-g I compile this with: g++ -c fkt.cpp Now I run nm and get: 00000000 T _Z6add2ii U __gxx_personality_v0 When I want to use the function anywhere I get: (.eh_frame+0x12): undefined reference to `__gxx_personality_v0' How can I solve this problem? (I'm using Ubuntu Linux.) c++ g++ share|improve this question edited Jun 26 at 10:47 Peter Mortensen 10.2k1369107 asked May 18 '11 at 13:49 develhevel 1,08821120 marked as duplicate by Neil Butterworth, Paul R, Bo Persson, Donal Fellows, gbn May 20 '11 at 13:25 This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question. 1 Can we see the command line you're using to link with? (You should be using g++ to do the linking too if you're not already.) –Rup May 18 '11 at 13:52 Have you tried g++ ftk.cpp -o ftk ? –karlphillip May 18 '11 at 13:53 i dot the linking with ghc (using FFI) –develhevel May 18 '11 at 14:39 3 I had this error wh
Get Kubuntu Get Xubuntu Get Lubuntu Get UbuntuStudio Get Mythbuntu Get Edubuntu Get Ubuntu-GNOME Get UbuntuKylin Ubuntu Code of Conduct Ubuntu Wiki Community Wiki Other Support Launchpad https://ubuntuforums.org/showthread.php?t=1687827 Answers Ubuntu IRC Support AskUbuntu Official Documentation User Documentation Social Media Facebook Twitter Useful Links Distrowatch Bugs: Ubuntu PPAs: Ubuntu Web Upd8: Ubuntu OMG! Ubuntu Ubuntu Insights Planet Ubuntu Activity Page Please read before SSO login Advanced Search Forum The Ubuntu Forum Community Ubuntu Specialised Support Development & Programming Programming Talk [SOLVED] compiling with gcc and "undefined reference to xxx" Having an Issue undefined reference With Posting ? Do you want to help us debug the posting issues ? < is the place to report it, thanks ! Results 1 to 4 of 4 Thread: compiling with gcc and "undefined reference to xxx" Thread Tools Show Printable Version Subscribe to this Thread… Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode February 14th, 2011 #1 NeillHog View undefined reference to Profile View Forum Posts Private Message Visit Homepage Gee! These Aren't Roasted! 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. I really appreciate any and all help because I am so out of my depth. I have installed gcc on a NSLU2. Running gcc -o test test.c brings no error and afterwards I can run the program test with ./test. test.c #include