Military Tank drone, why are they not common yet? The question does not have to be directly related to Linux and any language is fair game. The first function has not been completed, and is completely useless in its remedial stages, but somewhere, the following error occurs: Code: /usr/lib/crt1.o: In function `_start': /usr/lib/crt1.o(.text+0x18): undefined reference to `main' Find More Posts by deiussum 11-23-2005, 03:37 PM #9 pplppp LQ Newbie Registered: Jul 2004 Posts: 3 Rep: what is the command you use to run gcc (what options Get More Information
They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own. What is a one word noun for Ethereum? You need to add it: $ gcc -o runexp runexp.c scd.o data_proc.o -lm -fopenmp share|improve this answer answered Apr 9 '13 at 14:52 unwind 259k40339465 add a comment| up vote 1 What is this shrub/plant?
Whatever source file you're really compiling doesn't define a main function. –Keith Thompson Nov 2 '11 at 4:07 add a comment| 5 Answers 5 active oldest votes up vote 30 down For example :- db.o: db.cpp $(CC) -c $(CFLAGS) $(LDFLAGS) db.cpp $(LIBS) Also, while compiling, there's no need to provide "$(LIBS)" to the compiler, only provide them when linking. If you are writing C++ make sure you are using g++ to link rather than gcc. Undefined Reference To Main Makefile current community chat Stack Overflow Meta Stack Overflow your communities Sign up or log in to customize your list.
Not a member? Best regards, Tom Oct 6 '06 #2 P: n/a Thomas Tutone owolablo wrote: I'm making a project involving some C++ source files. In the above case, the main function is not defined in db.cpp and hence although compilation succeeds, the linker throws an error as it cannot find the main function. How can Data be property of Starfleet?
Am I right to think this homework problem on counting triangles in a grid is improperly set out? Undefined Reference To Main Error In C Join Date Aug 2007 Location PA Beans 363 DistroUbuntu 10.04 Lucid Lynx undefined reference to `main' -- but main is defined hey all, I have a very simple C++ program: Code: Thanks & Regards,Sukruth H.V Top Log in to post comments vishal b. Thanks.
It doesn't know what "DayOfYear" is. http://www.linuxquestions.org/questions/programming-9/getting-undefined-reference-to-main-error-384667/ If you get an error indicating that your class is a "non-aggregate type", then the compiler has not seen your class definition and doesn't recognize your class as such. Undefined Reference To Main Gcc How to describe very damaging natural weapon attacks from a weak creature delete the numbers uniq -c created Why isn't Almond Milk (and other non-animal based 'milk') considered juice? Undefined Reference To Main C++ ostreams must be passed by reference. comparison between signed and unsigned integer expressions Example xyz.cpp: In function `int main()': zyz.cpp:54: warning: comparison between signed and unsigned integer expressions Meaning This
And you should always listen to the warnings, i.e. check over here Alien_Hominid View Public Profile View LQ Blog View Review Entries View HCL Entries Find More Posts by Alien_Hominid 05-25-2011, 05:25 PM #13 yaa see LQ Newbie Registered: May 2011 It basically involved library issues and other small things like that! I understand that this is in the linking stage... Undefined Reference To Main G++
How to describe very damaging natural weapon attacks from a weak creature Can a un-used Nonclustered Index still help Query Performance? I'm courious, what has happened to 'argc' and 'argv'? Linux. his comment is here With g++, you can do that in one step, for example: g++ list.cpp main.cpp -o main You have to have a main function somewhere.
But thanks anways. Oct 6 '06 #1 Post Reply Share this Question 8 Replies P: n/a Thomas Tutone owolablo wrote: I'm making a project involving some C++ source files. That will create the intermediate .o files, and then you can link the .o files together with an additional call to gcc/g++. In Function Start Undefined Reference To Main 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
you are fools for reopening a thread from two years ago. Wed, 03/18/2015 - 23:53 hi, I am building Gromacs 5.0.4 with intel compilers. Compiler Errors undeclared identifier Example doy.cpp: In function `int main()': doy.cpp:25: `DayOfYear' undeclared (first use this function) doy.cpp:25: (Each undeclared identifier is reported only once for each function it appears in.) weblink Loading...
Browse other questions tagged c++ or ask your own question. Linked 0 “Undefined reference to main” with main in a seperate script/rule Related 801What is the purpose of .PHONY in a makefile?4Undefined reference to 'main' error in crt1.o function _start0undefined reference In your case runexp.o is treated as output file name, not input object file and thus your main function is undefined. asked 3 years ago viewed 50742 times active 1 year ago Blog How Do Software Developers in New York, San Francisco, London and Bangalore… Related 1Error linking with gcc1Cuda mixed C
Linker errors occur when g++ tries to combine all of your .o files into an executable file. Frey Definitions Commonly used words and phrases found in the compiler and linker error messages. It doesn't necessarily have to be in list.cpp.