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					64 lines
				
				2.1 KiB
			
		
		
			
		
	
	
					64 lines
				
				2.1 KiB
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											3 years ago
										 
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								import os
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								from distutils.msvc9compiler import MSVCCompiler as _MSVCCompiler
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								from .system_info import platform_bits
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								def _merge(old, new):
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								    """Concatenate two environment paths avoiding repeats.
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								    Here `old` is the environment string before the base class initialize
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								    function is called and `new` is the string after the call. The new string
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								    will be a fixed string if it is not obtained from the current environment,
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								    or the same as the old string if obtained from the same environment. The aim
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								    here is not to append the new string if it is already contained in the old
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								    string so as to limit the growth of the environment string.
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								    Parameters
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								    ----------
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								    old : string
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								        Previous environment string.
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								    new : string
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								        New environment string.
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								    Returns
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								    -------
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								    ret : string
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								        Updated environment string.
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								    """
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								    if not old:
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								        return new
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								    if new in old:
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								        return old
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								    # Neither new nor old is empty. Give old priority.
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								    return ';'.join([old, new])
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								class MSVCCompiler(_MSVCCompiler):
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								    def __init__(self, verbose=0, dry_run=0, force=0):
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								        _MSVCCompiler.__init__(self, verbose, dry_run, force)
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								    def initialize(self, plat_name=None):
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								        # The 'lib' and 'include' variables may be overwritten
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								        # by MSVCCompiler.initialize, so save them for later merge.
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								        environ_lib = os.getenv('lib')
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								        environ_include = os.getenv('include')
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								        _MSVCCompiler.initialize(self, plat_name)
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								        # Merge current and previous values of 'lib' and 'include'
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								        os.environ['lib'] = _merge(environ_lib, os.environ['lib'])
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								        os.environ['include'] = _merge(environ_include, os.environ['include'])
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								        # msvc9 building for 32 bits requires SSE2 to work around a
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								        # compiler bug.
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								        if platform_bits == 32:
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								            self.compile_options += ['/arch:SSE2']
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								            self.compile_options_debug += ['/arch:SSE2']
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								    def manifest_setup_ldargs(self, output_filename, build_temp, ld_args):
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								        ld_args.append('/MANIFEST')
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								        _MSVCCompiler.manifest_setup_ldargs(self, output_filename,
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								                                            build_temp, ld_args)
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