"""SCons.Tool.ifort

Tool-specific initialization for newer versions of the Intel Fortran Compiler
for Linux/Windows (and possibly Mac OS X).

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__
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# The above copyright notice and this permission notice shall be included
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__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"

import SCons.Defaults
from SCons.Scanner.Fortran import FortranScan
from .FortranCommon import add_all_to_env

def generate(env):
    """Add Builders and construction variables for ifort to an Environment."""
    # ifort supports Fortran 90 and Fortran 95
    # Additionally, ifort recognizes more file extensions.
    fscan = FortranScan("FORTRANPATH")
    SCons.Tool.SourceFileScanner.add_scanner('.i', fscan)
    SCons.Tool.SourceFileScanner.add_scanner('.i90', fscan)

    if 'FORTRANFILESUFFIXES' not in env:
        env['FORTRANFILESUFFIXES'] = ['.i']
    else:
        env['FORTRANFILESUFFIXES'].append('.i')

    if 'F90FILESUFFIXES' not in env:
        env['F90FILESUFFIXES'] = ['.i90']
    else:
        env['F90FILESUFFIXES'].append('.i90')

    add_all_to_env(env)

    fc = 'ifort'

    for dialect in ['F77', 'F90', 'FORTRAN', 'F95']:
        env['%s' % dialect] = fc
        env['SH%s' % dialect] = '$%s' % dialect
        if env['PLATFORM'] == 'posix':
            env['SH%sFLAGS' % dialect] = SCons.Util.CLVar('$%sFLAGS -fPIC' % dialect)

    if env['PLATFORM'] == 'win32':
        # On Windows, the ifort compiler specifies the object on the
        # command line with -object:, not -o.  Massage the necessary
        # command-line construction variables.
        for dialect in ['F77', 'F90', 'FORTRAN', 'F95']:
            for var in ['%sCOM' % dialect, '%sPPCOM' % dialect,
                        'SH%sCOM' % dialect, 'SH%sPPCOM' % dialect]:
                env[var] = env[var].replace('-o $TARGET', '-object:$TARGET')
        env['FORTRANMODDIRPREFIX'] = "/module:"
    else:
        env['FORTRANMODDIRPREFIX'] = "-module "

def exists(env):
    return env.Detect('ifort')

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