scons/llvm.py

   1 """llvm
   2
   3 Tool-specific initialization for LLVM
   4
   5 """
   6
   7 #
   8 # Copyright (c) 2009 VMware, Inc.
   9 #
  10 # Permission is hereby granted, free of charge, to any person obtaining
  11 # a copy of this software and associated documentation files (the
  12 # "Software"), to deal in the Software without restriction, including
  13 # without limitation the rights to use, copy, modify, merge, publish,
  14 # distribute, sublicense, and/or sell copies of the Software, and to
  15 # permit persons to whom the Software is furnished to do so, subject to
  16 # the following conditions:
  17 #
  18 # The above copyright notice and this permission notice shall be included
  19 # in all copies or substantial portions of the Software.
  20 #
  21 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
  22 # KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
  23 # WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  24 # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  25 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  26 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  27 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  28 #
  29
  30 import os
  31 import os.path
  32
  33 import SCons.Errors
  34 import SCons.Util
  35
  36
  37 def generate(env):
  38     try:
  39         llvm_dir = os.environ['LLVM']
  40     except KeyError:
  41         # Do nothing -- use the system headers/libs
  42         pass
  43     else:
  44         if not os.path.isdir(llvm_dir):
  45             raise SCons.Errors.InternalError, "Specified LLVM directory not found"
  46
  47         if env['debug']:
  48             llvm_subdir = 'Debug'
  49         else:
  50             llvm_subdir = 'Release'
  51
  52         llvm_bin_dir = os.path.join(llvm_dir, llvm_subdir, 'bin')
  53         if not os.path.isdir(llvm_bin_dir):
  54             raise SCons.Errors.InternalError, "LLVM build directory not found"
  55
  56         env.PrependENVPath('PATH', llvm_bin_dir)
  57
  58     if env.Detect('llvm-config'):
  59         version = env.backtick('llvm-config --version').rstrip()
  60
  61         try:
  62             env.ParseConfig('llvm-config --cppflags')
  63             env.ParseConfig('llvm-config --libs jit interpreter nativecodegen bitwriter')
  64             env.ParseConfig('llvm-config --ldflags')
  65         except OSError:
  66             print 'llvm-config version %s failed' % version
  67         else:
  68             env['LINK'] = env['CXX']
  69             env['LLVM_VERSION'] = version
  70
  71 def exists(env):
  72     return True
  73
  74 # vim:set ts=4 sw=4 et: