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Create an AllFlagsFlag class which inherits from the CompoundFlag class. This class is a singleton, and the SimpleFlags install themselves in it instead of having SCons collect them. The allFlagsVersion global variable was supposed to be for debugging according to a comment, but was actually an important part of the "All" flags inner workings. It was not exposed in the header, but was redefined/pulled through in src/python/pybind11/debug.cc. The AllFlagsFlag class now tracks that value, and it can be accessed without reaching behind the curtain. This also somewhat decentralizes the debug flag building process in SCons. The debug/flags.cc still includes all flags at once which centralizes them, but at least now the "All" flag won't also. Change-Id: I8430e0fe9022846aade028fb46c80777169a2007 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/48370 Tested-by: kokoro <noreply+kokoro@google.com> Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br> Reviewed-by: Nathanael Premillieu <nathanael.premillieu@huawei.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
This is the gem5 simulator. The main website can be found at http://www.gem5.org A good starting point is http://www.gem5.org/about, and for more information about building the simulator and getting started please see http://www.gem5.org/documentation and http://www.gem5.org/documentation/learning_gem5/introduction. To build gem5, you will need the following software: g++ or clang, Python (gem5 links in the Python interpreter), SCons, SWIG, zlib, m4, and lastly protobuf if you want trace capture and playback support. Please see http://www.gem5.org/documentation/general_docs/building for more details concerning the minimum versions of the aforementioned tools. Once you have all dependencies resolved, type 'scons build/<ARCH>/gem5.opt' where ARCH is one of ARM, NULL, MIPS, POWER, SPARC, or X86. This will build an optimized version of the gem5 binary (gem5.opt) for the the specified architecture. See http://www.gem5.org/documentation/general_docs/building for more details and options. The basic source release includes these subdirectories: - configs: example simulation configuration scripts - ext: less-common external packages needed to build gem5 - src: source code of the gem5 simulator - system: source for some optional system software for simulated systems - tests: regression tests - util: useful utility programs and files To run full-system simulations, you will need compiled system firmware (console and PALcode for Alpha), kernel binaries and one or more disk images. If you have questions, please send mail to gem5-users@gem5.org Enjoy using gem5 and please share your modifications and extensions.