[SOLVED]Recursively use makepkg with python...or bash!

Question

I am basically trying to build a base Archlinux system from scratch on my eee pc. I researched Pacbuild a little bit but decided to try my own had at this.
After being completely unsuccessful at trying to write bash scripts with loops and variables and whatnot, I took a look at python. I basically just searched a bunch of python tutorials on google and came up with this. So..this being my first script and all I was wondering if this would be the right way to do this. It basically works except with no error checking and if I want it to stop i have to press ctrl-c until the loop ends...but other that it works fine.
#! /usr/bin/env python
#import bash commands
import os
import sys
#open pkglist file
pkglist = open('/home/rhune/list', 'r')
pkgname = pkglist.readline() #read pkgname in file
while len(pkgname) != 0:
pkgname = pkgname.rstrip('\n') #delete newline
os.chdir('/home/rhune/eeepkgs')
os.chdir(pkgname) #cd /home/rhune/pkgname
os.system('makepkg') #run makepkg in working dir
os.chdir('/home/rhune/eeepkgs') #cd ../
pkgname = pkglist.readline() #read pkgname in file
pkglist.close() #close file
The "list" file is a list of folders in the directory im pointing to.
I also plan on having it accept an argument of what folder to run in and using the tempfile to create the directory list, and with some sort of error checking. But thats a whole nother project.
Any comments or contributions appreciated!
edit: is there a way to check if makepkg successfully compiles the package? i.e. does it return a 1 or 0 or some sort of value? Or would i have to parse the actual output of it?
Last edited by rhune (2009-08-28 04:48:05)

Answer 1

Thanks much! This works, just gotta pick a better place to store the output.
#!/bin/bash
cd $1
for folder in $(find * -type d)
do
cd $folder
makepkg -s
if [ $? -gt 0 ]; then
echo $folder >> '/home/rhune/failed'
else
echo $folder >> '/home/rhune/passed'
fi
cd ../
done
Also figured out this in python:
!/usr/bin/env python
import os
import subprocess
base = "/home/rhune/test/pkgs"
failed=[]
dir = os.listdir(base)
dir.sort()
os.chdir(base)
print dir
for x in range(len(dir)):
os.chdir(dir[x])
retcode = subprocess.call(['makepkg', '-s'])
if retcode==1:
failed.append(dir[x])
os.chdir(base)
print failed
The bash one seems a bit simpler though.
Also, this:
#! /usr/bin/env python
import os
import sys
deplist=[]
depname=""
count=0 #count apostrophes
#search for depends= line in pkgbuild
with open('/home/rhune/pkgs/yaourt/PKGBUILD', 'r') as pkg:
for deps in pkg:
if "depends" in deps: break
deps=deps.strip('depends=')
#insert depnames into deplist
for x in deps:
if x=="'": count+=1 #counts apostrophes
if x.isalpha(): depname+=x
if count==2:
deplist.append(depname)
depname="" #reset depname
count=0 #reset count
#pbget for each dependency in list
for x in range(len(deplist)):
os.system('pbget --arch=i686 '+deplist[x])
Reads a PKGBUILD file and pbgets dependencies. Need to change sys to subprocess, didnt realize it was outdated. Still needs a little work, but its practically done. Also made a sed script to go through each directory and change the PKGBUILD to use gcc-4.5 for the atom optimization.
#!/bin/bash
cd $1
ls -l
for folder in $(find * -type d)
do
cd $folder
sed -s 's/\.\/configure/CC=gcc-4.5 \.\/configure/' PKGBUILD > tmpfile ; mv tmpfile PKGBUILD
cd ../
done
These being the first time ever writing any sort of scripts, i think im getting the hang of it. Thanks to a little (and i mean little) bit of c++ knowledge.
So im basically ready to compile the whole system, hopefully itll all work!
Thanks
edit: also, maybe a stupid question, but why does $0 -gt 0 work? does the script return a 1 or 0 after each iteration or is it from makepkg?
Last edited by rhune (2009-08-28 04:53:52)