64d1297d86
These are no longer split out and shared in the root build/ directory. This does result in a small amount of overhead from building redundant copies of these files, although the overhead is not significant. When building 7 different variants of gem5, all the ISAs and NULL, the difference on my machine was: Before: real 41m25.372s user 914m22.266s sys 41m51.816s After: real 42m38.074s user 921m36.852s sys 43m2.949s This is about a 2-3% difference, which is a worse than typical case, since the overhead scales with the number of variants being built. The benefit of pulling ext/ into the variant directory is that there can now be a single config which applies to all files used to build gem5, and that config is represented by the variant of gem5 being built. Change-Id: I6f0db97c63a7f3e252e7e351aa862340978e701b Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/56750 Maintainer: Gabe Black <gabe.black@gmail.com> Tested-by: kokoro <noreply+kokoro@google.com> Reviewed-by: Gabe Black <gabe.black@gmail.com>
91 lines
3.6 KiB
Python
91 lines
3.6 KiB
Python
# -*- mode:python -*-
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# Copyright (c) 2013 ARM Limited
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# All rights reserved.
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#
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# The license below extends only to copyright in the software and shall
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# not be construed as granting a license to any other intellectual
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# property including but not limited to intellectual property relating
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# to a hardware implementation of the functionality of the software
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# licensed hereunder. You may use the software subject to the license
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# terms below provided that you ensure that this notice is replicated
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# unmodified and in its entirety in all distributions of the software,
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# modified or unmodified, in source code or in binary form.
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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 are
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# met: 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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# 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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# neither the name of the copyright holders nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# 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
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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import os
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Import('env')
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# See if we got a cloned DRAMSim2 repo as a subdirectory and set the
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# HAVE_DRAMSIM flag accordingly
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if not os.path.exists(Dir('.').srcnode().abspath + '/DRAMSim2'):
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env['HAVE_DRAMSIM'] = False
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Return()
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# We have got the folder, so add the library and build the wrappers
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env['HAVE_DRAMSIM'] = True
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# Add the appropriate files. We leave out the trace driven simulator
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dram_files = []
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def DRAMFile(filename):
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dram_files.append(File('DRAMSim2/' + filename))
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DRAMFile('AddressMapping.cpp')
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DRAMFile('Bank.cpp')
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DRAMFile('BankState.cpp')
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DRAMFile('BusPacket.cpp')
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DRAMFile('ClockDoenv.cpp')
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DRAMFile('CommandQueue.cpp')
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DRAMFile('IniReader.cpp')
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DRAMFile('MemoryController.cpp')
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DRAMFile('MemorySystem.cpp')
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DRAMFile('MultiChannelMemorySystem.cpp')
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DRAMFile('Rank.cpp')
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DRAMFile('SimulatorObject.cpp')
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DRAMFile('Transaction.cpp')
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# DRAMSim2 violates some of the warning flags used by gem5, so
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# we explicitly disable them here
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dramenv = env.Clone()
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dramenv.Append(CCFLAGS=['-Wno-unused-value', '-Wno-error=nonnull-compare'])
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# If we are using clang, there are more flags to disable
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if env['CLANG']:
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dramenv.Append(CCFLAGS=['-Wno-unused-private-field',
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'-Wno-tautological-undefined-compare'])
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# Tell DRAMSim2 to not store any data as this is already covered by
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# the wrapper
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dramenv.Append(CCFLAGS=['-DNO_STORAGE'])
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dramenv.Library('dramsim2', [dramenv.SharedObject(f) for f in dram_files])
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env.Prepend(CPPPATH=Dir('.'))
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env.Append(LIBS=['dramsim2'])
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env.Prepend(LIBPATH=[Dir('.')])
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