ba8ba4c451
Simplified hardware model testing. Even smarter compiler option generation using sysctl and new GCC 4.2 features. Get processor count from sysctl and thus remove our dependency on RubyCocoa.
107 lines
3.0 KiB
Ruby
107 lines
3.0 KiB
Ruby
# Copyright 2009 Max Howell and other contributors.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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class Hardware
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# These methods use info spewed out by sysctl.
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# Look in <mach/machine.h> for decoding info.
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def self.cpu_type
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@@cpu_type ||= `/usr/sbin/sysctl -n hw.cputype`.to_i
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case @@cpu_type
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when 7
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:intel
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when 18
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:ppc
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else
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:dunno
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end
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end
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def self.intel_family
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@@intel_family ||= `/usr/sbin/sysctl -n hw.cpufamily`.to_i
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case @@intel_family
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when 0x73d67300 # Yonah: Core Solo/Duo
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:core
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when 0x426f69ef # Merom: Core 2 Duo
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:core2
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when 0x78ea4fbc # Penryn
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:penryn
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when 0x6b5a4cd2 # Nehalem
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:nehalem
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else
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:dunno
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end
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end
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def self.processor_count
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@@processor_count ||= `/usr/sbin/sysctl -n hw.ncpu`.to_i
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end
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def self.gcc_march # what to pass to gcc
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@@gcc_march ||= if self.cpu_type == :intel
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case self.intel_family
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when :core
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" -march=prescott"
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when :core2, :penryn, :nehalem
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# GCC 4.3 has a -march=core2, but this isn't 4.3 and nocona is correct
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" -march=nocona"
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end
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else
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""
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end
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end
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def self.gcc_msse # what to pass to gcc
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# avoid sse4 for now in case it blows up
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@@gcc_msse ||= if sysctl_bool("hw.optional.sse3")
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" -msse3 -mfpmath=sse"
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else
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""
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end
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end
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def self.gcc_mmmx # what to pass to gcc
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@@gcc_mmmx ||= if sysctl_bool("hw.optional.mmx")
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" -mmmx"
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else
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""
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end
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end
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def self.is_64bit?
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@@is_64bit ||= sysctl_bool("hw.cpu64bit_capable")
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end
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protected
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def self.sysctl_bool(property)
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result = nil
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IO.popen("/usr/sbin/sysctl -n #{property} 2>/dev/null") do |f|
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result = f.gets.to_i # should be 0 or 1
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end
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$?.success? && result == 1 # sysctl call succeded and printed 1
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end
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end
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