"""SCons.Tool.as

Tool-specific initialization for as, the generic Posix assembler.

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.

"""

#
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# the following conditions:
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__revision__ = "src/engine/SCons/Tool/as.py 5357 2011/09/09 21:31:03 bdeegan"

import SCons.Defaults
import SCons.Tool
import SCons.Util

assemblers = ['as']

ASSuffixes = ['.s', '.asm', '.ASM']
ASPPSuffixes = ['.spp', '.SPP', '.sx']
if SCons.Util.case_sensitive_suffixes('.s', '.S'):
    ASPPSuffixes.extend(['.S'])
else:
    ASSuffixes.extend(['.S'])

def generate(env):
    """Add Builders and construction variables for as to an Environment."""
    static_obj, shared_obj = SCons.Tool.createObjBuilders(env)

    for suffix in ASSuffixes:
        static_obj.add_action(suffix, SCons.Defaults.ASAction)
        shared_obj.add_action(suffix, SCons.Defaults.ASAction)
        static_obj.add_emitter(suffix, SCons.Defaults.StaticObjectEmitter)
        shared_obj.add_emitter(suffix, SCons.Defaults.SharedObjectEmitter)

    for suffix in ASPPSuffixes:
        static_obj.add_action(suffix, SCons.Defaults.ASPPAction)
        shared_obj.add_action(suffix, SCons.Defaults.ASPPAction)
        static_obj.add_emitter(suffix, SCons.Defaults.StaticObjectEmitter)
        shared_obj.add_emitter(suffix, SCons.Defaults.SharedObjectEmitter)

    env['AS']        = env.Detect(assemblers) or 'as'
    env['ASFLAGS']   = SCons.Util.CLVar('')
    env['ASCOM']     = '$AS $ASFLAGS -o $TARGET $SOURCES'
    env['ASPPFLAGS'] = '$ASFLAGS'
    env['ASPPCOM']   = '$CC $ASPPFLAGS $CPPFLAGS $_CPPDEFFLAGS $_CPPINCFLAGS -c -o $TARGET $SOURCES'

def exists(env):
    return env.Detect(assemblers)

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