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#!/usr/bin/env python2
#
# Script to build and install packages into the Steam runtime
# Patched version of https://github.com/ValveSoftware/steam-runtime/blob/master/build-runtime.py
import os
import re
import sys
import subprocess
import argparse
import json
# The top level directory
top = sys.path[0]
def parse_args():
parser = argparse.ArgumentParser()
parser.add_argument("-r", "--runtime", help="specify runtime path", default=os.path.join(top,"runtime"))
parser.add_argument("-i", "--input", help="packages JSON", required=True)
return parser.parse_args()
def install_deb (basename, deb, dest_dir):
installtag_dir=os.path.join(dest_dir, "installed")
if not os.access(installtag_dir, os.W_OK):
os.makedirs(installtag_dir)
#
# Unpack the package into the dest_dir
#
os.chdir(top)
subprocess.check_call(['dpkg-deb', '-x', deb, dest_dir])
#
# Walks through the files in the runtime directory and converts any absolute symlinks
# to their relative equivalent
#
def fix_symlinks ():
for dir, subdirs, files in os.walk(args.runtime):
for name in files:
filepath=os.path.join(dir,name)
if os.path.islink(filepath):
target = os.readlink(filepath)
if os.path.isabs(target):
#
# compute the target of the symlink based on the 'root' of the architecture's runtime
#
target2 = os.path.join(args.runtime,target[1:])
#
# Set the new relative target path
#
os.unlink(filepath)
os.symlink(os.path.relpath(target2,dir), filepath)
#
# Creates the usr/lib/debug/.build-id/xx/xxxxxxxxx.debug symlink tree for all the debug
# symbols
#
def fix_debuglinks ():
for dir, subdirs, files in os.walk(os.path.join(args.runtime,"usr/lib/debug")):
if ".build-id" in subdirs:
subdirs.remove(".build-id") # don't recurse into .build-id directory we are creating
for file in files:
#
# scrape the output of readelf to find the buildid for this binary
#
p = subprocess.Popen(["readelf", '-n', os.path.join(dir,file)], stdout=subprocess.PIPE)
for line in iter(p.stdout.readline, ""):
m = re.search('Build ID: (\w{2})(\w+)',line)
if m:
linkdir = os.path.join(args.runtime,"usr/lib/debug/.build-id",m.group(1))
if not os.access(linkdir, os.W_OK):
os.makedirs(linkdir)
link = os.path.join(linkdir,m.group(2))
print "SYMLINKING symbol file %s to %s" % (link, os.path.relpath(os.path.join(dir,file),linkdir))
if os.path.lexists(link):
os.unlink(link)
os.symlink(os.path.relpath(os.path.join(dir,file), linkdir),link)
args = parse_args()
print ("Creating Steam Runtime in %s" % args.runtime)
with open(args.input) as pkgfile:
pkgs = json.load(pkgfile)
for pkg in pkgs:
install_deb(pkg["name"], pkg["source"], args.runtime)
fix_debuglinks()
fix_symlinks()
# vi: set noexpandtab:
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