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Instead, create a new tool called EnvDefaults. This tool now needs to be explicitly listed in the set of tools available through an Environment, but that's easy to do in on place (all environments should stem from main). Hijacking default like we were doing was (as far as I can tell) not how that tool was intended to be used, and doing things this way is a bit less hacky. Also, we can split more Builders, etc, out of SConstruct, and these will need to attach to main in the same way. We're going to need a list of tools when main is constructed one way or the other, so we might as well follow the rules. Change-Id: I392e1639cb69d373c64970dccf45258000498cc3 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/40965 Reviewed-by: Gabe Black <gabe.black@gmail.com> Tested-by: kokoro <noreply+kokoro@google.com> Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
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.