I’ve got an issue with an assignment, but I’m not asking for help to do the assignment, just single problem.
My code is like this:
#include "linux/kernel.h" #include "linux/unistd.h" #include <linux/slab.h> typedef _msg_t msg_t; struct msg_t { /* members here */ }; static msg_t *bottom = NULL; static msg_t *top = NULL; int function_one (argA, argB) { /* function is working, no need to show code*/ } int function_two (argA, argB) { /* function is working, so no need I guess to show the code*/ } int main(int argc, char ** argv) { char *in = "This is a testing message"; char msg[50]; int mlen; function_one(in, strlen(in)+1); mlen = function_two(msg, 50); }
Here’s the problem: When I do the make command from the directory, I get the error
/home/<username hidden by me>/dm510/linux-3.18.2/arch/um/os-linux/main.c:118: multipli definition of 'main' arch/um/kernel/built-in.o: /home/<username hidden again>/dm510/linux-3.18.2/arch/um/kernel/file_i_created.c:60 first defined here"
What does this error mean? I only defined the main method one time in my own file
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Answer
The message says you have (at least) two C files, main.c and file_i_created.c that are included in the build. Both have main() functions. (In C, the term is “function”, not “method”.) Remove one of those source files, or remove/rename the main() function in one of them.