Linker Error Undefined Reference C
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Linker Error Undefined Reference To Function In C
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Undefined Reference To Function C++
programmers, just like you, helping each other. Join them; it only takes a minute: Sign up What causes the error “undefined reference to (some function)”? [duplicate] up vote 7 down vote favorite This question already has undefined reference to constructor an answer here: What is an undefined reference/unresolved external symbol error and how do I fix it? 25 answers I get the error: main.o(.text+0x1ed): In function `main': : undefined reference to `avergecolumns' collect2: ld returned 1 exit status when I gcc *.o. I'm not quite sure what causes this error. Other posters have explained it as the function is not found or the function is empty. If someone could clarify or refine, it cmake undefined reference would be greaty appreciated! Here is my function's code(I'm trying to calculate the average of the column in 2D arrays): #include "my.h" void averagecolumns (int x, int y, int** a) { int i; int j; float sum; float colAvg; sum = 0; colAvg = 0; printf("i. The column averages are: \n"); for(i = 0; i < x; i++) { for(j = 0; j < y; j++) { sum += a[i][j]; colAvg = sum / (float)x; } printf("Column: %3d, Average: %6.2f", j, colAvg); sum = 0; colAvg = 0; } The relavent parts of main are: #include "my.h" int main (int argc, char* argv[]) { int** a; float** colAvg; int ROWS; int COLS; int i; int j; int** table; FILE* fpmyfile; int closeResult; .... printme (ROWS, COLS, a); // call functions a - j oddvalues (ROWS, COLS, a); oddlocations (ROWS, COLS, a); countoddrows (ROWS, COLS, a); addrows (ROWS, COLS, a); findfirstsmall (ROWS, COLS, a); findlastlarge (ROWS,COLS, a); addcolumns (ROWS, COLS, a); avergecolumns (ROWS, COLS, a); .... } Also, is this a linker or a compile error (I wasn't sure which tag to add). c linker-error share|improve this question edited Nov 6 '11 at 0:49 Kerrek SB 284k40517750 asked Nov 6 '11 at 0:42 Piseagan 114239 marked as duplicate by PlasmaHH, JasonMArcher, Michael Walz, Ivan Ferić, Oz123 Jul 4 '14
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Undefined Reference To C++
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Ld Returned 1 Exit Status
Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; http://stackoverflow.com/questions/8024440/what-causes-the-error-undefined-reference-to-some-function it only takes a minute: Sign up “undefined reference to” errors when linking static C library with C++ code up vote 17 down vote favorite 6 I have a test file (just for the link test) where I overload the new/delete operators with my own malloc/free library called libxmalloc.a. But I keep getting "underdefined reference to" error as following when http://stackoverflow.com/questions/18877437/undefined-reference-to-errors-when-linking-static-c-library-with-c-code linking the static library, even I change the order of test.o and -lxmalloc. But everything works well with other C programs linking this library. I'm so confused with this issue and appreciate any clue. Error MSg: g++ -m64 -O3 -I/usr/include/ethos -I/usr/include/nacl/x86_64 -c -o test.o test.cpp g++ -m64 -O3 -L. -o demo test.o -lxmalloc test.o: In function `operator new(unsigned long)': test.cpp:(.text+0x1): undefined reference to `malloc(unsigned long)' test.o: In function `operator delete(void*)': test.cpp:(.text+0x11): undefined reference to `free(void*)' test.o: In function `operator new[](unsigned long)': test.cpp:(.text+0x21): undefined reference to `malloc(unsigned long)' test.o: In function `operator delete[](void*)': test.cpp:(.text+0x31): undefined reference to `free(void*)' test.o: In function `main': test.cpp:(.text.startup+0xc): undefined reference to `malloc(unsigned long)' test.cpp:(.text.startup+0x19): undefined reference to `malloc(unsigned long)' test.cpp:(.text.startup+0x24): undefined reference to `free(void*)' test.cpp:(.text.startup+0x31): undefined reference to `free(void*)' collect2: ld returned 1 exit status make: *** [demo] Error 1 My test.cpp file: #include
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies http://stackoverflow.com/questions/14871679/linker-error-undefined-reference-to-print of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a undefined reference minute: Sign up Linker error undefined reference to `print' up vote 1 down vote favorite I have a program named "main.c" containing the main() that calls a function whose definition is available in other source file named "nim.c". I made a header file named "nim.h" that contains the prototype of the required method. This header file "nim.h" is already included it in undefined reference to my "main.c". I am putting up all the files that are part of this program. //main.c #include