1# -*- mode:python -*-
2
3# Copyright (c) 2011 Advanced Micro Devices, Inc.
4# Copyright (c) 2009 The Hewlett-Packard Development Company
5# Copyright (c) 2004-2005 The Regents of The University of Michigan
6# All rights reserved.
7#
8# Redistribution and use in source and binary forms, with or without

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705# Check for <fenv.h> (C99 FP environment control)
706have_fenv = conf.CheckHeader('fenv.h', '<>')
707if not have_fenv:
708 print "Warning: Header file <fenv.h> not found."
709 print " This host has no IEEE FP rounding mode control."
710
711######################################################################
712#
713# Finish the configuration
714#
715main = conf.Finish()
716
717######################################################################
718#
719# Collect all non-global variables
720#

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789 BoolVariable('EFENCE', 'Link with Electric Fence malloc debugger',
790 False),
791 BoolVariable('SS_COMPATIBLE_FP',
792 'Make floating-point results compatible with SimpleScalar',
793 False),
794 BoolVariable('USE_SSE2',
795 'Compile for SSE2 (-msse2) to get IEEE FP on x86 hosts',
796 False),
797 BoolVariable('USE_POSIX_CLOCK', 'Use POSIX Clocks', have_posix_clock),
798 BoolVariable('USE_FENV', 'Use <fenv.h> IEEE mode control', have_fenv),
799 BoolVariable('USE_CHECKER', 'Use checker for detailed CPU models', False),
800 BoolVariable('CP_ANNOTATE', 'Enable critical path annotation capability', False),
801 BoolVariable('RUBY', 'Build with Ruby', False),
802 )
803
804# These variables get exported to #defines in config/*.hh (see src/SConscript).
805export_vars += ['FULL_SYSTEM', 'USE_FENV',
806 'NO_FAST_ALLOC', 'FORCE_FAST_ALLOC', 'FAST_ALLOC_STATS',
807 'SS_COMPATIBLE_FP', 'USE_CHECKER', 'TARGET_ISA', 'CP_ANNOTATE',
808 'USE_POSIX_CLOCK' ]
809
810###################################################
811#
812# Define a SCons builder for configuration flag headers.
813#

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962
963 if not env['USE_FENV']:
964 print "Warning: No IEEE FP rounding mode control in", variant_dir + "."
965 print " FP results may deviate slightly from other platforms."
966
967 if env['EFENCE']:
968 env.Append(LIBS=['efence'])
969
970 # Save sticky variable settings back to current variables file
971 sticky_vars.Save(current_vars_file, env)
972
973 if env['USE_SSE2']:
974 env.Append(CCFLAGS=['-msse2'])
975
976 # The src/SConscript file sets up the build rules in 'env' according
977 # to the configured variables. It returns a list of environments,

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