mapnik/scons/scons-local-0.96.1/SCons/Tool/lex.py

53 lines
2 KiB
Python
Raw Normal View History

2006-02-01 00:09:52 +01:00
"""SCons.Tool.lex
Tool-specific initialization for lex.
There normally shouldn't be any need to import this module directly.
It will usually be imported through the generic SCons.Tool.Tool()
selection method.
"""
#
# Copyright (c) 2001, 2002, 2003, 2004 The SCons Foundation
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
__revision__ = "/home/scons/scons/branch.0/baseline/src/engine/SCons/Tool/lex.py 0.96.1.D001 2004/08/23 09:55:29 knight"
import SCons.Defaults
import SCons.Tool
import SCons.Util
def generate(env):
"""Add Builders and construction variables for lex to an Environment."""
c_file, cxx_file = SCons.Tool.createCFileBuilders(env)
c_file.add_action('.l', SCons.Defaults.LexAction)
cxx_file.add_action('.ll', SCons.Defaults.LexAction)
env['LEX'] = env.Detect('flex') or 'lex'
env['LEXFLAGS'] = SCons.Util.CLVar('')
env['LEXCOM'] = '$LEX $LEXFLAGS -t $SOURCES > $TARGET'
def exists(env):
return env.Detect(['flex', 'lex'])