I wanted to have a pretty way to debug my C code and found the Gist that this is a fork of. I'm kinda new with Makefiles, so I saw an oppurtunity to figure that out as well.
So how do you use this? Save all the files in this hierarchy:
├── Makefile
├── bin
├── obj
└── src
├── helloworld.c
├── mylib.c
└── mylib.h
If you want debug messages. Compile with:
> make DEBUG=y
otherwise it defaults to DEBUG := n as defined in the Makefile
| #include <stdlib.h> /* exit(), EXIT_SUCCESS */ | |
| #include "mylib.h" | |
| #ifdef DEBUG | |
| #define _DEBUG(fmt, args...) printf("%s:%s:%d: "fmt, __FILE__, __FUNCTION__, __LINE__, args) | |
| #else | |
| #define _DEBUG(fmt, args...) | |
| #endif | |
| int main() { | |
| int a = 42; | |
| print_hello(a); | |
| _DEBUG("This is a debugmessage. Variable a = %d\n", a); | |
| _DEBUG("Debugmessage without placeholders and variables.\n", NULL); | |
| exit(EXIT_SUCCESS); | |
| } | |
| DEBUG := n | |
| CFLAGS := -std=gnu99 -Werror -Wall -Wno-deprecated-declarations | |
| ifeq ($(DEBUG),y) | |
| CFLAGS += -DDEBUG -g | |
| endif | |
| .PHONY: all clean | |
| bin/helloworld: obj/helloworld.o obj/mylib.o | |
| $(CC) $(CFLAGS) $^ -o $@ | |
| obj/%.o: src/%.c | |
| $(CC) $(CFLAGS) -c $< -o $@ | |
| clean: | |
| $(RM) obj/*.o bin/* |
| #include "mylib.h" | |
| void print_hello(int a) { | |
| printf("Hello world! The answer is %d\n", a); | |
| } |
| #include <stdio.h> | |
| void print_hello(int); |