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      1 #!/usr/bin/env python
      2 # Copyright 2014 the V8 project authors. All rights reserved.
      3 # Redistribution and use in source and binary forms, with or without
      4 # modification, are permitted provided that the following conditions are
      5 # met:
      6 #
      7 #     * Redistributions of source code must retain the above copyright
      8 #       notice, this list of conditions and the following disclaimer.
      9 #     * Redistributions in binary form must reproduce the above
     10 #       copyright notice, this list of conditions and the following
     11 #       disclaimer in the documentation and/or other materials provided
     12 #       with the distribution.
     13 #     * Neither the name of Google Inc. nor the names of its
     14 #       contributors may be used to endorse or promote products derived
     15 #       from this software without specific prior written permission.
     16 #
     17 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     18 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     19 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     20 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     21 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     22 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     23 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     24 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     25 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     26 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     27 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28 
     29 """Outputs host CPU architecture in format recognized by gyp."""
     30 
     31 import platform
     32 import re
     33 import sys
     34 
     35 
     36 def main():
     37   print DoMain([])
     38   return 0
     39 
     40 def DoMain(_):
     41   """Hook to be called from gyp without starting a separate python
     42   interpreter."""
     43   host_arch = platform.machine()
     44   host_system = platform.system();
     45 
     46   # Convert machine type to format recognized by gyp.
     47   if re.match(r'i.86', host_arch) or host_arch == 'i86pc':
     48     host_arch = 'ia32'
     49   elif host_arch in ['x86_64', 'amd64']:
     50     host_arch = 'x64'
     51   elif host_arch.startswith('arm'):
     52     host_arch = 'arm'
     53   elif host_arch == 'aarch64':
     54     host_arch = 'arm64'
     55   elif host_arch == 'mips64':
     56     host_arch = 'mips64el'
     57   elif host_arch.startswith('mips'):
     58     host_arch = 'mipsel'
     59 
     60   # Under AIX the value returned by platform.machine is not
     61   # the best indicator of the host architecture
     62   # AIX 6.1 which is the lowest level supported only provides
     63   # a 64 bit kernel
     64   if host_system == 'AIX':
     65     host_arch = 'ppc64'
     66 
     67   # platform.machine is based on running kernel. It's possible to use 64-bit
     68   # kernel with 32-bit userland, e.g. to give linker slightly more memory.
     69   # Distinguish between different userland bitness by querying
     70   # the python binary.
     71   if host_arch == 'x64' and platform.architecture()[0] == '32bit':
     72     host_arch = 'ia32'
     73 
     74   return host_arch
     75 
     76 if __name__ == '__main__':
     77   sys.exit(main())
     78