# Copyright 2018 Google, Inc.
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Import('*')

from gem5_scons import warning

def use_systemc_check(env, warn=False):
    import platform
    host_isa = platform.machine()
    # Disallow compiling systemc if the host ISA is RISC-V.
    # The error is described here: https://gem5.atlassian.net/browse/GEM5-1027
    if host_isa.startswith("riscv"):
        if warn:
            warning('Warning: Systemc may not work on RISC-V.')
        return False
    if env['PLATFORM'] == 'darwin':
        if warn:
            warning('Warning: Systemc may not work on Mac OS.')
        return False
    return True

main.AddMethod(use_systemc_check, 'UseSystemcCheck')

sticky_vars.Add(BoolVariable('USE_SYSTEMC', 'Enable SystemC API support',
                             main.UseSystemcCheck()))

export_vars.append('USE_SYSTEMC')