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#!/usr/bin/env python
#
# Copyright 2016 Google Inc.
#
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Create the asset."""
import argparse
import fileinput
import os
import shutil
import subprocess
import sys
from distutils import dir_util
def create_asset(target_dir):
"""Create the asset."""
print "Installing some cross-compiling packages. Hit enter to continue."
raw_input()
subprocess.check_call([
"sudo","apt-get","install",
"libstdc++-4.8-dev-armhf-cross",
"libgcc-4.8-dev-armhf-cross",
"binutils-arm-linux-gnueabihf"
])
shutil.copytree('/usr/arm-linux-gnueabihf', target_dir)
shutil.copytree('/usr/lib/gcc-cross/arm-linux-gnueabihf/4.8.4',
os.path.join(target_dir, 'gcc-cross'))
# copy_tree allows copying into a dir that exists
# We need to augment the toolchain with some lib*.so that help ld
# do its magic as well as some includes that may be useful.
dir_util.copy_tree('/usr/x86_64-linux-gnu/arm-linux-gnueabihf/lib',
os.path.join(target_dir, 'lib'))
dir_util.copy_tree('/usr/x86_64-linux-gnu/arm-linux-gnueabihf/include',
os.path.join(target_dir, 'include'))
# The file paths in libpthread.so and libc.so start off as absolute file
# paths (e.g. /usr/arm-linux-gnueabihf/lib/libpthread.so.0), which won't
# work on the bots. We use fileinput to replace just those lines (which
# start with GROUP). fileinput redirects stdout, so printing here actually
# writes to the file.
bad_libpthread = os.path.join(target_dir, "lib", "libpthread.so")
for line in fileinput.input(bad_libpthread, inplace=True):
if line.startswith("GROUP"):
print "GROUP ( libpthread.so.0 libpthread_nonshared.a )"
else:
print line
bad_libc = os.path.join(target_dir, "lib", "libc.so")
for line in fileinput.input(bad_libc, inplace=True):
if line.startswith("GROUP"):
print ("GROUP ( libc.so.6 libc_nonshared.a "
"AS_NEEDED ( ld-linux-armhf.so.3 ) )")
else:
print line
def main():
if 'linux' not in sys.platform:
print >> sys.stderr, 'This script only runs on Linux.'
sys.exit(1)
parser = argparse.ArgumentParser()
parser.add_argument('--target_dir', '-t', required=True)
args = parser.parse_args()
create_asset(args.target_dir)
if __name__ == '__main__':
main()
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