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Linker Error Undefined Reference To Static Variable

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cp12_38.cpp: In function ‘int main()’: cp12_38.cpp:10: error: invalid use of qualified-name ‘bar::j’ cp12_38.cpp:11: error: invalid use of qualified-name ‘bar::f’ cp12_38.cpp:13: error: ‘f’ was not declared in this scope I'm still confused. void Helloworld::foo() { Helloworld::x = 10; }; share|improve this answer edited Jun 2 at 7:49 answered Apr 29 '13 at 17:25 Andy Prowl 81.8k12241339 1 thanks a lot man. Hope this helps. Undefined reference to static member data I have 3 files, header, implementation, and test code. http://cdbug.org/undefined-reference/linker-error-undefined-reference-to-static-member.php

You are assigning them in the Initialize start method but didn't initialize them. Saved my life. At least on g++ 4.2.4. Red balls and Rings How is the ATC language structured? http://stackoverflow.com/questions/14331469/undefined-reference-to-static-variable

Undefined Reference To Static Member Variable C++

But it still throws error: cp12_38.cpp: In function ‘int main()’: cp12_38.cpp:13: error: ‘f’ was not declared in this scope Dec 7, 2011 at 2:57pm UTC subjugater (71) bump up~ Dec 7, My code: Log.h------------ #include #include using namespace std; class Log{ public: static void method(string arg); private: static string theString ; }; Log.cpp ---- #include "Log.h" #include void Log::method(string How do you grow in a skill when you're the company lead in that area? The other question referenced is very general in nature and would not have helped me to resolve my mac specific issue. –Adam Aug 29 at 16:09 add a comment| 2 Answers

How to decipher Powershell syntax for text formatting? Thanks again! –voxobscuro Apr 9 '11 at 6:50 You can still have an init function, hen you might need an init function on NewSoftSerial as well. 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 C++ Undefined Reference To Extern Variable I really doubt if these two initialization should appear in class bar (or appear somewhere outside the class but in bar.cpp).

Once you call static_cast, a temporary variable is created. Would not allowing my vehicle to downshift uphill be fuel efficient? Anyone have any idea what could be wrong/had a similar problem with Qt? Get More Information share|improve this answer answered Dec 23 '11 at 4:24 Naveen 43.9k34117205 Thanks very much, that did the trick –Prime Dec 24 '11 at 1:07 add a comment| up vote

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Undefined Reference To Static Member Function C++

What is the 'dot space filename' command doing in bash? http://stackoverflow.com/questions/5603101/resolving-a-linker-error-undefined-reference-to-static-class-members share|improve this answer answered Nov 7 '08 at 18:01 Paul Tomblin 113k35255356 I think you're answering your own question: The cast works because it creates (a temporary) reference. –SlashV Undefined Reference To Static Member Variable C++ Would not allowing my vehicle to downshift uphill be fuel efficient? Undefined Reference To Static Function You can also give j another starting value here if you like. int bar::j = 10; Dec 7, 2011 at 5:36am UTC subjugater (71) Hi Peter87, Thanks for your help.

Why does Luke ignore Yoda's advice? More about the author Why doesn't compiler report missing semicolon? Different precision for masses of moon and earth online Is a food chain without plants plausible? What you need to do is simply to provide a definition for your static member variable: class Helloworld { public: static int x; void foo(); }; int Helloworld::x = 0; // Undefined Reference To Private Static Variable

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No new replies allowed. C++ Undefined Reference To Static Vector How exactly std::string_view is faster than const std::string&? This will pollute the global namespace with std wherever you include the header.

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Undefined reference to static member data Share This Thread  Tweet This + 1 this Post To Linkedin Subscribe to this Thread  Subscribe to This Thread October 17th, 2004,02:30 AM All the source files compile but when I try to link them the compiler yells at me with an undefined reference error. Yes they were DECLARED, but when I checked my .cpp file, there was no definition for them, so this time the error was literal. Invalid Use Of Qualified-name 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

Who is the highest-grossing debut director? What examples are there of funny connected waypoint names or airways that tell a story? Worked like a charm. :) Faq Reply With Quote Share This Thread  Tweet This + 1 this Post To Linkedin Subscribe to this Thread  Subscribe to This Thread « http://cdbug.org/undefined-reference/linker-error-undefined-reference-c.php Why doesn't compiler report missing semicolon?

Browse other questions tagged c++ qt cmake linker-error static-members or ask your own question. I'm uploading the code for testing now. –voxobscuro Apr 9 '11 at 18:03 add a comment| up vote 2 down vote You need to create memory and initialize your static variables. Is it legal to bring board games (made of wood) to Australia? Any suggestions?

Join them; it only takes a minute: Sign up Linker error when using static members up vote 3 down vote favorite I'm using Qt 4.7 and Cmake 2.8.3 with g++ 4.2.1 Name spelling on publications USB in computer screen not working more hot questions question feed lang-cpp about us tour help blog chat data legal privacy policy work here advertising info mobile Is it possible to keep publishing under my professional (maiden) name, different from my married legal name? Browse other questions tagged c++ xcode static-libraries clang static-methods or ask your own question.

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