DrAtomic / learn-quilt

learning patching with quilt

learning quilt

we dont always maintain the code we work on, in that case patches are necessary. so this is me learning how to use quilt

basic quilt usage

this just includes a hello world program. from there I changed it to say goodbye world. after the change i did git diff > patches/hello.patch, I also added a series file in the patches directory with hello.patch as its contents. from there i stashed the git changes to revert the hello.c file to say hello world again. This file is changed through quilt

quilt commands used

quilt push -a this applies all the patches

quilt pop -a removes all the patches

makefile

the makefile simply

1. compiles the original hello.c (with hello world)
2. runs the hello program
3. applies the patch
4. compiles the patched hello.c file (with goodbye world)
5. runs the patched hello program

usage

clone this repo

check the original hello.c file by cat hello.c

#include <stdio.h>

int main(void){
  printf("\nhello world\n");
  return 0;
};

in the directory just run make it'll say

running original hello

hello world
Applying patch patches/hello.patch
patching file hello.c

Now at patch patches/hello.patch
running patched hello

goodbye world

check the hello.c after the patch is applied cat hello.c

#include <stdio.h>

int main(void){
  printf("\ngoodbye world\n");
  return 0;
};

lastly run a make clean to revert to original and check the hello.c file like before