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Linker Error Undefined Reference To Function In C


It doesn't say which struct was missing a semicolon. In fact, you should almost never start trying to fix errors from the end of the file to the beginning for one simple reason: you don't know if they're actually errors! Is giving my girlfriend money for her mortgage closing costs and down payment considered fraud? Tic Tac Toe - C++14 What do you call someone without a nationality? this contact form

Notice again that this was an error caused by a problem earlier in the program, not on line 8, but earlier, when the struct lacked a semicolon terminator. Check out this tutorial on makefiles: Make File Tutorial It helps to automate this process. share|improve this answer answered Jan 28 '13 at 7:53 Kos 39.8k1492171 Thank you I think this is it haha. –Fox Jan 28 '13 at 7:59 add a comment| up Die Liebe höret nimmer auf more hot questions lang-c about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts http://stackoverflow.com/questions/15257120/undefined-reference-to-linker-error

Linker Error Undefined Reference To Function In C

For example with gcc you might do this: gcc point.c testpoint.c Of course as others have pointed out, you also need to remove one of your main functions, since you can LIBS += -lxmalloc all: demo demo: test.o $(CXX) $(CXXFLAGS) $(LIBDIR) -o demo test.o $(LIBS) test.o: test.cpp $(CXX) $(CFLAGS) -c -o [email protected] $< clean: - rm -f *.o demo c++ c static-libraries The Cprogramming.com ebook, Jumping into C++, will walk you through it, step-by-step.

Why does Wikipedia list an improper pronunciation of Esperanto? Your compiler may also warn you about using variables that haven't been initialized and other similar mistakes. Does the reciprocal of a probability represent anything? Undefined Reference To Static Library Function I'd left an extraneous main function in net.c by mistake, which was confusing gmakemake into attempting to create two separate executables that didn't rely on each other.

Watching order for the Dan Brown films? Undefined Reference Error In C Tic Tac Toe - C++14 Development of retrosynthesis plan How to fix a bent lens mount hook? Linker errors can also come about in functions that you have declared and defined if you fail to include all of the necessary object files in the linking process. http://stackoverflow.com/questions/8024440/what-causes-the-error-undefined-reference-to-some-function Also note that 1) there are lots of variations in how to use make when it comes to large projects, and 2) there are also lots of alternatives to make.

If you leave out myClass.o, then it will not have the class definition even if you correctly included myClass.h! How To Solve Undefined Reference Error In C Otherwise, you will get "undefined function" error messages. A sometimes subtle error is when the linker complains about there being more than one definition for a class, function, or variable. It implicitly looks for a file named Makefile, and runs whatever rules it contains.

Undefined Reference Error In C

Minimum of a function on an open interval Given a limit with notation f, how would you solve? Dozens of earthworms came on my terrace and died there Is there a formal way of saying 'hog'? Linker Error Undefined Reference To Function In C The last bizarre type of linker error is a complain about an "undefined reference to main". Undefined Reference To Function C++ 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

The first is the case of an undeclared variable that you swear you declared. weblink Number sets symbols in LaTeX more hot questions question feed lang-c about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life It normally looks roughly like this: .c.o: $(CC) -c $(CFLAGS) $< This assumes the name of the C compiler is in a macro named CC (implicitly defined like CC=gcc) and allows If you inspect your test.o file with nm -u you'll see that the referenced symbol names don't match with those provided in your library. G++ Undefined Reference To

  1. Using DC in transformers?
  2. Nothing.
  3. I'm using MinGW for the compiler.

Is there a formal way of saying 'hog'? Dealing with a nasty recruiter Why is the FBI making such a big deal out Hillary Clinton's private email server? 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 navigate here Why does removing Iceweasel nuke GNOME?

You normally specify what needs to be done via a makefile, and use make to do the work. Undefined Reference To Constructor Instruments that don't require hand strength What was the first operating system to feature a separate kernel? 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

share|improve this answer answered Mar 6 '13 at 20:18 Oliver Charlesworth 185k20367520 you beat me...

What is the "Chairman Tree"? 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. Join them; it only takes a minute: Sign up C Linking Error: undefined reference to 'main' up vote 13 down vote favorite I have read the other answers on this topic, Cmake Undefined Reference share|improve this answer edited Apr 5 '11 at 22:59 answered Apr 5 '11 at 22:20 Jerry Coffin 322k31354750 This works, but is this generally how larger C programs are

When using the g++ frontend, you can do this by specifying all the source files together on the command line. Why were Navajo code talkers used during WW2? For instance, the statement "for(;)" isn't correct syntax because a for loop always needs to have three parts. his comment is here In fact, it had to be earlier in the program--you won't get an error message that indicates a syntax error prior to the line on which the error actually occurred.