7 files changed, 192 insertions, 0 deletions
diff --git a/infra/bots/assets/armhf_sysroot/README.md b/infra/bots/assets/armhf_sysroot/README.md
new file mode 100644
index 0000000000..257acd7b7a
--- /dev/null
+++ b/infra/bots/assets/armhf_sysroot/README.md
@@ -0,0 +1,9 @@
+ARM (hard float) sysroot for cross-compiling c++ code on a x86_64 Linux bot.
+
+Run create_and_upload which installs the following debian packages and turns them
+into a toolchain:
+
+    libstdc++-4.8-dev-armhf-cross libgcc-4.8-dev-armhf-cross binutils-arm-linux-gnueabihf
+
+Take a peak at `/usr/arm-linux-gnueabihf/include/c++/4.8.X` - you may need to update the
+include paths if that number changed from the previous release (currently 4.8.4).
+\ No newline at end of file
diff --git a/infra/bots/assets/armhf_sysroot/VERSION b/infra/bots/assets/armhf_sysroot/VERSION
new file mode 100644
index 0000000000..e440e5c842
--- /dev/null
+++ b/infra/bots/assets/armhf_sysroot/VERSION
@@ -0,0 +1 @@
+3
+\ No newline at end of file
diff --git a/infra/bots/assets/armhf_sysroot/common.py b/infra/bots/assets/armhf_sysroot/common.py
new file mode 100755
index 0000000000..4920c9b4fb
--- /dev/null
+++ b/infra/bots/assets/armhf_sysroot/common.py
@@ -0,0 +1,26 @@
+#!/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.
+
+
+"""Common vars used by scripts in this directory."""
+
+
+import os
+import sys
+
+FILE_DIR = os.path.dirname(os.path.abspath(__file__))
+INFRA_BOTS_DIR = os.path.realpath(os.path.join(FILE_DIR, os.pardir, os.pardir))
+
+sys.path.insert(0, INFRA_BOTS_DIR)
+from assets import assets
+
+ASSET_NAME = os.path.basename(FILE_DIR)
+
+
+def run(cmd):
+  """Run a command, eg. "upload" or "download". """
+  assets.main([cmd, ASSET_NAME] + sys.argv[1:])
diff --git a/infra/bots/assets/armhf_sysroot/create.py b/infra/bots/assets/armhf_sysroot/create.py
new file mode 100755
index 0000000000..7be59fbc8e
--- /dev/null
+++ b/infra/bots/assets/armhf_sysroot/create.py
@@ -0,0 +1,78 @@
+#!/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()
diff --git a/infra/bots/assets/armhf_sysroot/create_and_upload.py b/infra/bots/assets/armhf_sysroot/create_and_upload.py
new file mode 100755
index 0000000000..b9e6d6f669
--- /dev/null
+++ b/infra/bots/assets/armhf_sysroot/create_and_upload.py
@@ -0,0 +1,46 @@
+#!/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 and upload it."""
+
+
+import argparse
+import common
+import os
+import subprocess
+import sys
+import utils
+
+
+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('--gsutil')
+  args = parser.parse_args()
+
+  with utils.tmp_dir():
+    cwd = os.getcwd()
+    create_script = os.path.join(common.FILE_DIR, 'create.py')
+    upload_script = os.path.join(common.FILE_DIR, 'upload.py')
+
+    try:
+      cwd = os.path.join(cwd, 'sysroot')
+      subprocess.check_call(['python', create_script, '-t', cwd])
+      cmd = ['python', upload_script, '-t', cwd]
+      if args.gsutil:
+        cmd.extend(['--gsutil', args.gsutil])
+      subprocess.check_call(cmd)
+    except subprocess.CalledProcessError:
+      # Trap exceptions to avoid printing two stacktraces.
+      sys.exit(1)
+
+
+if __name__ == '__main__':
+  main()
diff --git a/infra/bots/assets/armhf_sysroot/download.py b/infra/bots/assets/armhf_sysroot/download.py
new file mode 100755
index 0000000000..96cc87d43f
--- /dev/null
+++ b/infra/bots/assets/armhf_sysroot/download.py
@@ -0,0 +1,16 @@
+#!/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.
+
+
+"""Download the current version of the asset."""
+
+
+import common
+
+
+if __name__ == '__main__':
+  common.run('download')
diff --git a/infra/bots/assets/armhf_sysroot/upload.py b/infra/bots/assets/armhf_sysroot/upload.py
new file mode 100755
index 0000000000..ba7fc8b6a1
--- /dev/null
+++ b/infra/bots/assets/armhf_sysroot/upload.py
@@ -0,0 +1,16 @@
+#!/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.
+
+
+"""Upload a new version of the asset."""
+
+
+import common
+
+
+if __name__ == '__main__':
+  common.run('upload')