Kalzium Undefined Reference Error
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Linking Error Undefined Reference To Function
fix it? 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 status main.cpp #include
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Undefined Reference To Static Variable C++
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Unresolved External C++
other. Join them; it only takes a minute: Sign up What is an undefined reference/unresolved external symbol error and how do I fix it? up vote 712 down vote favorite 317 What are undefined reference/unresolved external symbol errors? http://stackoverflow.com/questions/14557657/linker-error-c-undefined-reference What are common causes and how to fix/prevent them? Feel free to edit/add your own. c++ linker-error undefined-reference c++-faq unresolved-external share|improve this question edited Aug 4 '14 at 13:33 Arno Duvenhage 805517 asked Sep 24 '12 at 22:27 Luchian Grigore 167k28295455 3 One thing to consider adding is how to deal with "undefined vtable" and "undefined typeinfo" errors in particular (since they are less obvious than undefined functions or variables). –Jeremiah Willcock Jul 16 '13 at 18:25 http://stackoverflow.com/questions/12573816/what-is-an-undefined-reference-unresolved-external-symbol-error-and-how-do-i-fix 1 I've been marking this question to be a possible dupe of this one. But after going through all of your (brilliant) answers, I can't see this case covered here. I'm aware it's specific about how an IDE sets up the project type and it's linkage dependencies. But that's a such frequently asked question I think it would be worth covered (maybe just with a link to another appropriate dupe) here. If it is already, and I just didn't spot it, forget about this request/comment. –πάντα ῥεῖ Mar 3 '14 at 21:14 @LuchianGrigore 'feel free to add an answer' I preferred to add the relevant link (IMHO) your primary answer, if you'd like to permit. –πάντα ῥεῖ Mar 3 '14 at 22:36 1 Pretty common mistake is that you define a function as a standalone and forget the class selector (e.g. A::) in your .cpp file: You do this (wrong): void myFunc() { /* do stuff */ } Instead of this (right): void A::myFunc() { /* do stuff */ } –jave.web Mar 11 '15 at 18:45 4 If this happens to you with a Qt signal, you most likely forgot the Q_OBJECT macro. –ManuelSchneid3r Jun 18 '15 at 13:47 | show 1 more comment 25 Answers 25 active oldest votes up vote 427 down vote accepted Compiling a C++ program takes place in several
search in one of my setsExclude this search from one of my sets 15 messages in org.kde.kalziumRe: [Kalzium] Porting kalzium to exte...FromSent OnAttachmentsPino ToscanoFeb 20, 2010 7:41 am.diffBenoit JacobMar 10, 2010 11:31 pm Marcus D. HanwellMar 12, 2010 7:44 am Marcus D. HanwellApr 10, 2010 5:20 pm Pino ToscanoApr 13, 2010 10:04 am.txtMarcus D. HanwellApr 17, 2010 9:45 am Pino ToscanoApr 17, 2010 2:32 pm.diffMarcus D. HanwellMay 1, 2010 9:11 am Rebetez EtienneMay 20, 2010 12:33 pm Marcus D. HanwellMay 21, 2010 3:23 am Rebetez EtienneMay 21, 2010 3:37 am Marcus D. HanwellMay 21, 2010 3:49 am etie...@oberwallis.chMay 21, 2010 4:01 am etie...@oberwallis.chMay 21, 2010 12:34 pm Marcus D. HanwellMay 21, 2010 8:27 pm Subject:Re: [Kalzium] Porting kalzium to external AvogadroFrom:Rebetez Etienne (etie...@oberwallis.ch)Date:May 20, 2010 12:33:40 pmList:org.kde.kalziumHi Don't know if this is the right place to ask but it might be related: I just wanted to try out kalzium from trunk with the external avogadro and got a linking error. Avogadro compiled (without python) and works. It is instaled in: /usr/bin/avogadro kde has also the instaldir /usr (kalzium from trunk works as well without avogadro) I am still new to "compiling from source" and linking errors were never my favorite... (don't know where to look for errors) Any ideas? Thanks after "make" --------------------------------------------------------------- Linking CXX executable kalzium CMakeFiles/kalzium.dir/tools/moleculeview.o: In function `MoleculeDialog::elementCombo()': /home/etienne/Data/Programming/kdeedu/kalzium/src/tools/moleculeview.cpp:265: undefined reference to `Avogadro::ElementTranslator::name(int)' /home/etienne/Data/Programming/kdeedu/kalzium/src/tools/moleculeview.cpp:267: undefined reference to `Avogadro::ElementTranslator::name(int)' /home/etienne/Data/Programming/kdeedu/kalzium/src/tools/moleculeview.cpp:269: undefined reference to `Avogadro::ElementTranslator::name(int)' /home/etienne/Data/Programming/kdeedu/kalzium/src/tools/moleculeview.cpp:271: undefined reference to `Avogadro::ElementTranslator::name(int)' /home/etienne/Data/Programming/kdeedu/kalzium/src/tools/moleculeview.cpp:273: undefined reference to `Avogadro::ElementTranslator::name(int)' CMakeFiles/kalzium.