"""engine.SCons.Tool.g77

Tool-specific initialization for g77.

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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__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"

import os.path

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

compilers = ['g77', 'f77']

F77Suffixes = ['.f', '.for', '.FOR']
F77PPSuffixes = ['.fpp', '.FPP']
if os.path.normcase('.f') == os.path.normcase('.F'):
    F77Suffixes.append('.F')
else:
    F77PPSuffixes.append('.F')

def generate(env, platform):
    """Add Builders and construction variables for g77 to an Environment."""
    static_obj, shared_obj = SCons.Tool.createObjBuilders(env)

    for suffix in F77Suffixes:
        static_obj.add_action(suffix, SCons.Defaults.F77Action)
        shared_obj.add_action(suffix, SCons.Defaults.ShF77Action)

    for suffix in F77PPSuffixes:
        static_obj.add_action(suffix, SCons.Defaults.F77PPAction)
        shared_obj.add_action(suffix, SCons.Defaults.ShF77PPAction)

    env['F77']        = env.Detect(compilers) or 'g77'
    env['F77FLAGS']   = ''
    env['F77COM']     = '$F77 $F77FLAGS $_F77INCFLAGS -c -o $TARGET $SOURCES'
    env['F77PPCOM']   = '$F77 $F77FLAGS $CPPFLAGS $_F77INCFLAGS -c -o $TARGET $SOURCES'
    env['SHF77']      = '$F77'
    env['SHF77FLAGS'] = '$F77FLAGS -fPIC'
    env['SHF77COM']   = '$SHF77 $SHF77FLAGS $_F77INCFLAGS -c -o $TARGET $SOURCES'
    env['SHF77PPCOM'] = '$SHF77 $SHF77FLAGS $CPPFLAGS $_F77INCFLAGS -c -o $TARGET $SOURCES'

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