1 #!/usr/bin/env python 2 # 3 # Copyright 2016 Google Inc. 4 # 5 # Use of this source code is governed by a BSD-style license that can be 6 # found in the LICENSE file. 7 8 9 """Create the asset.""" 10 11 12 import argparse 13 import fileinput 14 import os 15 import shutil 16 import subprocess 17 import sys 18 19 from distutils import dir_util 20 21 22 def create_asset(target_dir): 23 """Create the asset.""" 24 25 print "Installing some cross-compiling packages. Hit enter to continue." 26 raw_input() 27 subprocess.check_call([ 28 "sudo","apt-get","install", 29 "libstdc++-4.8-dev-armhf-cross", 30 "libgcc-4.8-dev-armhf-cross", 31 "binutils-arm-linux-gnueabihf" 32 ]) 33 34 35 shutil.copytree('/usr/arm-linux-gnueabihf', target_dir) 36 shutil.copytree('/usr/lib/gcc-cross/arm-linux-gnueabihf/4.8.4', 37 os.path.join(target_dir, 'gcc-cross')) 38 # copy_tree allows copying into a dir that exists 39 # We need to augment the toolchain with some lib*.so that help ld 40 # do its magic as well as some includes that may be useful. 41 dir_util.copy_tree('/usr/x86_64-linux-gnu/arm-linux-gnueabihf/lib', 42 os.path.join(target_dir, 'lib')) 43 dir_util.copy_tree('/usr/x86_64-linux-gnu/arm-linux-gnueabihf/include', 44 os.path.join(target_dir, 'include')) 45 46 # The file paths in libpthread.so and libc.so start off as absolute file 47 # paths (e.g. /usr/arm-linux-gnueabihf/lib/libpthread.so.0), which won't 48 # work on the bots. We use fileinput to replace just those lines (which 49 # start with GROUP). fileinput redirects stdout, so printing here actually 50 # writes to the file. 51 bad_libpthread = os.path.join(target_dir, "lib", "libpthread.so") 52 for line in fileinput.input(bad_libpthread, inplace=True): 53 if line.startswith("GROUP"): 54 print "GROUP ( libpthread.so.0 libpthread_nonshared.a )" 55 else: 56 print line 57 58 bad_libc = os.path.join(target_dir, "lib", "libc.so") 59 for line in fileinput.input(bad_libc, inplace=True): 60 if line.startswith("GROUP"): 61 print ("GROUP ( libc.so.6 libc_nonshared.a " 62 "AS_NEEDED ( ld-linux-armhf.so.3 ) )") 63 else: 64 print line 65 66 67 def main(): 68 if 'linux' not in sys.platform: 69 print >> sys.stderr, 'This script only runs on Linux.' 70 sys.exit(1) 71 parser = argparse.ArgumentParser() 72 parser.add_argument('--target_dir', '-t', required=True) 73 args = parser.parse_args() 74 create_asset(args.target_dir) 75 76 77 if __name__ == '__main__': 78 main() 79
