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      1 #!/usr/bin/env python2
      2 
      3 from collections import namedtuple
      4 import glob
      5 
      6 
      7 # Why have 'cross_headers':
      8 # For some reason, clang doesn't know how to find some of the libstdc++
      9 # headers (c++config.h). Manually add in one of the paths:
     10 # https://llvm.org/bugs/show_bug.cgi?id=22937
     11 # Otherwise, we could assume the system has arm-linux-gnueabihf-g++ and
     12 # use that instead of clang, but so far we've just been using clang for
     13 # the unsandboxed build.
     14 def FindARMCrossInclude():
     15   return glob.glob(
     16       '/usr/arm-linux-gnueabihf/include/c++/*/arm-linux-gnueabihf')[-1]
     17 
     18 def FindMIPSCrossInclude():
     19   globs = glob.glob('/usr/mipsel-linux-gnu/include/c++/*/mipsel-linux-gnu')
     20   return globs[-1] if globs else '/invalid/mips/include/path'
     21 
     22 TargetInfo = namedtuple('TargetInfo',
     23                         ['target', 'compiler_arch', 'triple', 'llc_flags',
     24                          'ld_emu', 'sb_emu', 'cross_headers'])
     25 
     26 X8632Target = TargetInfo(target='x8632',
     27                          compiler_arch='x8632',
     28                          triple='i686-none-linux',
     29                          llc_flags=['-mcpu=pentium4m'],
     30                          ld_emu='elf_i386_nacl',
     31                          sb_emu='elf_i386_nacl',
     32                          cross_headers=[])
     33 
     34 X8664Target = TargetInfo(target='x8664',
     35                          compiler_arch='x8664',
     36                          triple='x86_64-none-linux-gnux32',
     37                          llc_flags=['-mcpu=x86-64'],
     38                          ld_emu='elf32_x86_64_nacl',
     39                          sb_emu='elf_x86_64_nacl',
     40                          cross_headers=[])
     41 
     42 ARM32Target = TargetInfo(target='arm32',
     43                          compiler_arch='armv7',
     44                          triple='armv7a-none-linux-gnueabihf',
     45                          llc_flags=['-mcpu=cortex-a9',
     46                                     '-float-abi=hard',
     47                                     '-mattr=+neon',
     48                                     '-arm-enable-dwarf-eh=1'],
     49                          ld_emu='armelf_nacl',
     50                          sb_emu='armelf_nacl',
     51                          cross_headers=['-isystem', FindARMCrossInclude()])
     52 
     53 # Investigate:
     54 # ld_emu script mips_nacl is not present in binutils. How to get it?
     55 MIPS32Target = TargetInfo(target='mips32',
     56                          compiler_arch='mips32',
     57                          triple='mipsel-linux-gnu',
     58                          llc_flags=[],
     59                          ld_emu='mips_nacl',
     60                          sb_emu='mips_nacl',
     61                          cross_headers=['-isystem', FindMIPSCrossInclude()])
     62 
     63 def ConvertTripleToNaCl(nonsfi_triple):
     64   return nonsfi_triple[:nonsfi_triple.find('-linux')] + '-nacl'
     65