site_scons/site_tools/target_platform_linux.py

   1 #!/usr/bin/python2.4
   2 # Copyright 2008, Google Inc.
   3 # All rights reserved.
   4 #
   5 # Redistribution and use in source and binary forms, with or without
   6 # modification, are permitted provided that the following conditions are
   7 # met:
   8 #
   9 #     * Redistributions of source code must retain the above copyright
  10 # notice, this list of conditions and the following disclaimer.
  11 #     * Redistributions in binary form must reproduce the above
  12 # copyright notice, this list of conditions and the following disclaimer
  13 # in the documentation and/or other materials provided with the
  14 # distribution.
  15 #     * Neither the name of Google Inc. nor the names of its
  16 # contributors may be used to endorse or promote products derived from
  17 # this software without specific prior written permission.
  18 #
  19 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  20 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  21 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  22 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  23 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  24 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  25 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  26 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  27 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  28 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  29 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  30
  31 """Build tool setup for Linux.
  32
  33 This module is a SCons tool which should be include in the topmost windows
  34 environment.
  35 It is used as follows:
  36   env = base_env.Clone(tools = ['component_setup'])
  37   linux_env = base_env.Clone(tools = ['target_platform_linux'])
  38 """
  39
  40
  41 def ComponentPlatformSetup(env, builder_name):
  42   """Hook to allow platform to modify environment inside a component builder.
  43
  44   Args:
  45     env: Environment to modify
  46     builder_name: Name of the builder
  47   """
  48   if env.get('ENABLE_EXCEPTIONS'):
  49     env.FilterOut(CCFLAGS=['-fno-exceptions'])
  50     env.Append(CCFLAGS=['-fexceptions'])
  51
  52 #------------------------------------------------------------------------------
  53
  54
  55 def generate(env):
  56   # NOTE: SCons requires the use of this name, which fails gpylint.
  57   """SCons entry point for this tool."""
  58
  59   # Use g++
  60   env.Tool('g++')
  61   env.Tool('gcc')
  62   env.Tool('gnulink')
  63   env.Tool('ar')
  64   env.Tool('as')
  65
  66   # Set target platform bits
  67   env.SetBits('linux', 'posix')
  68
  69   env.Replace(
  70       TARGET_PLATFORM='LINUX',
  71       COMPONENT_PLATFORM_SETUP=ComponentPlatformSetup,
  72       CCFLAG_INCLUDE='-include',     # Command line option to include a header
  73
  74       # Code coverage related.
  75       COVERAGE_CCFLAGS=['-ftest-coverage', '-fprofile-arcs'],
  76       COVERAGE_LIBS='gcov',
  77       COVERAGE_STOP_CMD=[
  78           '$COVERAGE_MCOV --directory "$TARGET_ROOT" --output "$TARGET"',
  79           ('$COVERAGE_GENHTML --output-directory $COVERAGE_HTML_DIR '
  80            '$COVERAGE_OUTPUT_FILE'),
  81       ],
  82   )
  83
  84   env.Append(
  85       HOST_PLATFORMS=['LINUX'],
  86       CPPDEFINES=['OS_LINUX=OS_LINUX'],
  87
  88       # Settings for debug
  89       CCFLAGS_DEBUG=[
  90           '-O0',     # turn off optimizations
  91           '-g',      # turn on debugging info
  92       ],
  93
  94       # Settings for optimized
  95       CCFLAGS_OPTIMIZED=['-O2'],
  96
  97       # Settings for component_builders
  98       COMPONENT_LIBRARY_LINK_SUFFIXES=['.so', '.a'],
  99       COMPONENT_LIBRARY_DEBUG_SUFFIXES=[],
 100   )