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Provides the Extension class, used to describe C/C++ extension
modules in setup scripts.
Overridden to support f2py.
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Parameters
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name : str
Extension name.
sources : list of str
List of source file locations relative to the top directory of
the package.
extra_compile_args : list of str
Extra command line arguments to pass to the compiler.
extra_f77_compile_args : list of str
Extra command line arguments to pass to the fortran77 compiler.
extra_f90_compile_args : list of str
Extra command line arguments to pass to the fortran90 compiler.
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