1. Here, we are going to learn why an Error: Id returned 1 exit status (undefined reference to 'main') occurs and how to fixed in C programming language? A humble request Our website is made possible by displaying online advertisements to our visitors.
  2. Dev C linker errors, undefined reference; Make File Undefined Reference. Undefined reference to destuctor in C; undefined reference when calling c func from c; LIBSSH2-DEV C Integration issue Linker error undefined reference to `libssh2 linking c and c objects caused compile eror: undefined reference.

Dev-C++ FAQ

Showing links to tutorials is useless, we need to see, what you did. Were you able to build the opencv libs? (in that case it's only a problem of 'how to use them' now. (and probably noone else is using dev-cpp here, so don't expect much, if it is related to that). Aug 17, 2018  使用 C/C 程式分成三個步驟: 編譯 (compile) → 連結 (link) → 執行 (載入 symbol)。了解每個階段的行為，才知道如何處理該階段的 undefined symbol。.
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Last update: 27/09/2000

1. When I compile my dos program and execute it,Dev-C++ minimizes and then restore in a second but nothingappears ?
2. When executing my dos program, it closesautomatically. How I can change this ?
3. After linking, i get the error“C:DEV-C++LIBlibmingw32.a(main.o)(.text+0x8e): undefinedreference to `WinMain@16'
4. When I launch Dev-C++ i get the message saying“WININET.DLL not found” ?
5. When I compile a file, I get a message saying'could not find <filename> '
6. The EXE files created are huge. What can i doto reduce the size ?
7.Under Windows NT, every time i launch Dev-C++ i get the message“Failed to set data for”
8.When I try to compile I get: ld: cannot open crt2. o: No suchfile or directory. What can i do ?
9.How can i use the OpenGL library and others ?
10. When i compile a file that contains referencesto Windows filename (like <Mydirmyfile.h>), i get a'unrecognized escape sequence' message ?
11. Is there any GUI library or packages availablefor Dev-C++ ?
12. I am having problems using Borland specificfunctions such as clrscr()
13. The toolbars icons are showing incorrectly.
14. It seems i've found a problem/bug that is notspecified here. What should i do ?
15. When attempting to create a setup program, iget the error 'File BinSetup.exe not found'.
16. How to use assembly (ASM) with Dev-C++ ?

1.When I compile my dos program and execute it, Dev-C++ minimizesand then restore in a second but nothing appears ?
When creating a console application, be sure to uncheck “Donot create a console” in Project Options (when working withsource files only uncheck “Create for win32” inCompiler Options).

2.When executing my dos program, it closes automatically. How I canchange this ?
You can use an input function at the end of you source, like thefollowing example :
#include<stdlib.h>
int main()
{
system(“PAUSE”);
return0;
}


3.After linking, i get the error“C:DEV-C++LIBlibmingw32.a(main.o)(.text+0x8e): undefinedreference to `WinMain@16'
You probably haven’t declared any main() function in yourprogram. Otherwise, try recompiling a second time.

4.When I launch Dev-C++ i get the message saying “WININET.DLLnot found” ?
If you are missing WININET.DLL on your Windows system, you candownload it at: http://www.rocketdownload.com/supfiles.htm

5.When I compile a file, I get a message saying 'could notfind <filename> '
Check in Compiler options if the direcories settings are correct.With a default setup, you should have :
C:DEV-C++Bin
c:DEV-C++Include
c:DEV-C++Include
c:DEV-C++Lib

6.The EXE files created are huge. What can i do to reduce the size?
If you want to reduce your exe file size from 330 Ko to 12 Ko forexample, go to compiler options. Then click on the Linker pageand uncheck 'Generate debug information'. This willremove debugging information (if you want to debug, uncheck it).You can also click on Optimization page and check 'Bestoptimization'.

7.Under Windows NT, every time i launch Dev-C++ i get the message“Failed to set data for”
The is because you are not in Administrator mode, and Dev-C++tries to write to the registry. To get rid of the error message,log on as the Administrator, or uncheck the file associationoptions in Environment options, Misc. Sheet.

8.when I try to compile I get: ld: cannot open crt2. o: No suchfile or directory. What can i do ?
Go to Compiler options, and check if the Lib directory iscorrectly set to:
C:Dev-C++Lib
(for a default installation).

If this stilldoesn't work, try copying the file Libcrt2.o to your Dev-C++'sBin directory.

9.How can i use the OpenGL library and others ?
All the libraries that comes with Mingw reside in the Libdirectory. They are all named in the following way: lib*.a
To link a library with your project, just add in Project options,Further option files :
-lopengl32
This is for including the libopengl32.a library. To add any otherlibrary, just follow the same syntax:
Type -l (L in lowercase) plus the base name of the library(filename without 'lib' and the '.a'extension).

10.When i compile a file that contains references to Windowsfilename (like <Mydirmyfile.h>), i get a 'unrecognizedescape sequence' message ?

The Mingw compilerunderstands paths in the Unix style (/mydir/myfile.h). Tryreplacing the in the filename by /

11.Is there any GUI library or packages available for Dev-C++ ?

You can downloadextra packages for Dev-C++ at http://www.bloodshed.net/dev/

12.I am having problems using Borland specific functions such asclrscr()

Include conio.h toyour source, and add C:Dev-C++Libconio.o to 'FurtherObject Files' in Project Options (where C:Dev-C++ is whereyou installed Dev-C++)

13.The toolbars icons are showing incorrectly.

On some screenresolutions, toolbars icons may show up incorrectly. You shouldtry changing your screen resolution, or disable toolbars from theView menu in Dev-C++

14. It seems i've found a problem/bug thatis not specified here. What should i do ?

First, you shouldtry doing a 'Check for Dev-C++ update' (in Help menu)to know if a new version has come that may correct this problem.If there are no new version or the problem wasn't fixed thenplease send an email describing the bug to : [email protected]

15.When attempting to create a setup program, i get the error'File BinSetup.exe not found'.
If you arewilling to use the Setup Creator feature of Dev-C++, you need to download and install thisfile
16.How to use assembly with Dev-C++ ?
The assembler uses AT&T (notIntel). Here's an example of such a syntax :
// 2 global variables
int AdrIO ;
static char ValIO ;
void MyFunction(..........)
{
__asm('mov %dx,_AdrIO') ; // loading 16 bits register
__asm('mov %al,_ValIO') ; // loading 8 bits register
/*
Don't forget the underscore _ before each global variable names !
*/
__asm('mov %dx,%ax') ; // AX --> DX
}
I'm self studying from the book, C++ Primer Plus Fifth Edition, by Stephen Prata. The following relates to Chapter 13, Page 699, Programming Exercise #4. One task is to write the derived class method definitions based upon the given prototypes. The following are the said prototypes.
You will note that the base class destructor is virtual. That the derived class destructor is implemented inline.

Dev C++ Undefined Reference Page

I was creating the derived class method definitions in a cpp file and couldn't get the project to progressively compile correctly. At my first method definition, a default constructor, the compiler kept spitting out this error message:
Chapter-13pe-13-04port.cpp|74|undefined reference to `vtable for VintagePort'
The line number was pointing to my derived class constructor definition. I did some googling around and came across this workaround. I removed the inline effect of the derived class destructor, made that into a method definition in the cpp file and presto, compilation succeeded.
Am I to assume that the example in the book, as regards the inline feature of a derived class destructor, is in error. Are there any other explanations.

Recommended Answers

I was creating the derived class method definitions in a cpp file
and couldn't get the project to progressively compile correctly.
At my first method definition, a default constructor,
the compiler kept spitting out this error message:

Dev C++ Undefined Reference To __imp_wsastartup'

this is perhaps the most obscure error message that gcc (actually …
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vijayan1211,152

Dev C++ Linker Error Undefined Reference To Winmain@16'

> I was creating the derived class method definitions in a cpp file
> and couldn't get the project to progressively compile correctly.
> At my first method definition, a default constructor,
> the compiler kept spitting out this error message:
this is perhaps the most obscure error message that gcc (actually the linker) spits out, but the reason is simple:
the compiler has to put the (one and only one) vtable for a class into some object file or the other. it puts it into the object file for the translation unit where the definition of the first non-pure-virtual out-of-line virtual member function is present. if there is no such definition, you get this rather unhelpful linker error message.
Dev
you would be able to progressively compile the code even if a non-pure virtual function is not defined, but to be able to link without errors, every such function must have a definition (at least a stub). and to prevent the non-creation of a v-table by the compiler, at least one of the non-pure virtual functions will have to be defined out-of-line.
gcc has a faq about this: http://gcc.gnu.org/faq.html#vtables

> Am I to assume that the example in the book, as regards the inline feature
> of a derived class destructor, is in error.
i think it is not a particularly good book, but in this case neither the book nor the compiler is in error.
if you define the destructor inline, and void VintagePort::Show() const out-of-line, the error will go away. there has to be at least one out-of-line definition of a non-pure-virtual function.
note: the microsoft compiler (as well as several other compilers) does not require this; it instantiates a v-table with internal linkage in *every* translation unit in which such a header (all non-pure virtual functions are inline) is included. this violates the c++ one definition rule for v-tables, but as always, folks at redmond tend to value pragmatism highly. and they do give you __declspec(novtable) to suppress the proliferation of v-tables.
Dev
superjacent commented: To the point and relevant advice, thank you.+1