Gcc Collect2 Error
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Collect2 Ld Returned 1 Exit Status Linux
Sign up What does “collect2: error: ld returned 1 exit status” mean? up vote 1 down vote favorite 1 I see the error collect2: error: ld returned 1 exit status very often. For example, I was executing the following snippet of code: void main() { char i; printf("ENTER i"); scanf("%c",&i); clrscr(); switch(i) { default: printf("\nHi..\n"); break; case 1: printf("\n\na"); break; case 2: undefined reference to main in function _start printf("\nb\n"); break; case 3: printf("\nc"); break; } } and I got this: main.c:(.text+0x33): undefined reference to `clrscr' collect2: error: ld returned 1 exit status What does it mean? c compiler-errors share|improve this question edited Dec 3 '14 at 15:45 fenceop 7592620 asked Dec 3 '14 at 13:06 user3682120 8113 Try including conio.h if you are using TurboC. If you are using GCC,this won't work even if you include it.Also,use int main() instead of void main() and add a return 0; at the end.Also the program would just print Hi.. and exit whatsoever be the input –Cool Guy Dec 3 '14 at 13:07 add a comment| 4 Answers 4 active oldest votes up vote 12 down vote accepted The "ld returned 1 exit status" error is the consequence of previous errors. In your example there is an earlier error - "undefined reference to `clrscr'" - and this is the real one. The exit status error just signals that the linking step in the build process encountered some errors. Normally exit status 0 means success, and exit status > 0 means errors. In many
can easily range from 50 to 75 percent of the total development cost."1 While this is not a course about the software development life cycle it is our (.text+0x20) undefined reference to main' gcc goal to teach you good software development technique. The errors collect2 error ld returned 1 exit status g++ that you typically experience are one of three types: Compiler Errors Linker Errors Run Time Errors lets examine these undefined reference to main c++ three types of errors in more detail. Compiler Errors Compiler errors are caused by incorrect syntax. This means that you have not followed the basic rules of C. These basic http://stackoverflow.com/questions/27272525/what-does-collect2-error-ld-returned-1-exit-status-mean rules are things like: putting a semicolon at the end of a line writing a proper function header passing the correct number and type of arguments to a function matching up all pairs of braces {} and parentheses () not using variables that you haven't declared declaring all variables at the top of a function many, many more When you run the compiler http://web.ics.purdue.edu/~cs240/misc/errors.html on your code it first does any preprocessing (that is any line that begins with #). Then it checks the syntax of your code. In other words it makes sure that you have followed all the rules of C. If you haven't it prints out an error so that you can fix your syntax. Unfortunately most new users find the messages sent back from gcc confusing. So we will go over some common gcc error messages, what they mean, and how to fix them. General compile-time error and warning description In C, a compilation error is usually fatal, meaning that the C compiler cannot compile the source code. A warning, on the other had, is usually just that. The compiler has identified that there may be a problem, but it can produce object code anyway. Warnings should not be ignored, because they usually do indicate that there is something wrong with the program, and it is likely to behave differently from what you would expect. Error messages and warnings are preceded by the program file name and function in which the error was encountered. For example, pr
Web Development GUI Toolkits/Desktop Databases Mail Systems openSolaris Eclipse Documentation Techotopia.com Virtuatopia.com How To Guides Virtualization General System Admin Linux Security Linux Filesystems Web Servers Graphics & Desktop PC Hardware Windows http://www.linuxtopia.org/online_books/an_introduction_to_gcc/gccintro_95.html Problem Solutions <<< previous table of contents next >>> 13.3 Linker error messages file not recognized: File format not recognized GCC uses the extension of a file, https://forum.qt.io/topic/9170/what-does-collect2-ld-returned-1-exit-status-mean such as '.c' or '.cc', to determine its content. If the extension is missing GCC cannot recognize the file type and will give this error. Example: #include
download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript). Home Qt Development General and Desktop What does "collect2: ld returned 1 exit status" mean? What does "collect2: ld returned 1 exit status" mean? This topic has been deleted. Only users with topic management privileges can see it. ahmed kato last edited by what is :: error: collect2: ld returned 1 exit status??? Ahmed Kato Computer & communications student Intern and MSP at Microsoft Reply Quote 0 dangelog last edited by You have to provide much more information. Software Engineer KDAB (UK) Ltd., a KDAB Group company Reply Quote 0 giesbert last edited by First of all, this is not a qt error, itÄs a linker error of the mingw / gcc tool chain. ld is the linker of mingw/gcc. I assume, that one or more dlls are not found or that some functions have no body... But for more information, you must provide more input Nokia Certified Qt Specialist. Programming Is Like Sex: One mistake and you have to support it for the rest of your life. (Michael Sinz) Reply Quote 0 goetz last edited by Assuming that you work with Qt Creator, the error message you stated is on the "build problems" tab. You should switch to the "compilation" tab (the 4th tab), where the full length linker and error output is collected. There you should find the class names wich are missing to the linker (which is most likely the cause of your problem). http://www.catb.org/~esr/faqs/smart-questions.html Reply Quote 0 ahmed kato last edited by thank u very much =) Ahmed Kato Computer & communications student Intern and MSP at Microsoft Reply Quote 0 tahere last edited by Hi whenever i inlcude a header to one of my .c files in NS2, for attach XFUZZY in NS, i get this error: collect2: ld returned 1 exit status. any help would be much appreciated! result of make command: mac/802_11e/mac-802_11e.o: In function Mac802_11e::send(Packet*, Handler*)': mac-802_11e.cc:(.text+0x1e31): undefined reference tofirst_sys::inference(double, double, double, double, double*)' mac/802_11e/mac-802_11e.o: In function first_sys::first_sys()': mac-802_11e.cc:(.text._ZN9first_sysC1Ev[first_sys::first_sys()]+0x16): undefined reference tovtable for first_sys' mac/802_11e/mac-802_11e.o: In function first_sys::~first_sys()': mac-802_11e.cc:(.text._ZN9first_sysD1Ev[first_sys::~first_sys()]+0xb): undefined reference tovtable for first_sys' collect2: ld returned 1 exit status make: *** [ns] Error 1 Reply Quote 0 DerManu last edited by How does your .pro