5e096f5b5d
This adds a new scons flag --no-duplicate-sources to build without linking source files to the build directory. I find this very helpful when using CLion, since I can now generate a compilation database using `bear scons build/ALL/gem5.debug --no-duplicate-sources` and CLion will now correctly semantically analyze all the files inside src/. It also ensures that clicking on a build warning/error now opens the real source file rather than a symlink. This is not enabled by default since it's possible that certain use cases are not working correctly, but the basic testing I've done so far appears to work just fine. It appears that with this change the `<root>/src` directory is no longer added to `PYTHONPATH` when running `tests/main.py`, so this change depends on https://gem5-review.git.corp.google.com/c/public/gem5/+/68757 Change-Id: Iddc9bf9c8211e68e5432c0a07f5c95f427c1ca16 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/68518 Tested-by: kokoro <noreply+kokoro@google.com> Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu> Maintainer: Bobby 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, 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 these tools. Once you have all dependencies resolved, type 'scons build/<CONFIG>/gem5.opt' where CONFIG is one of the options in build_opts like ARM, NULL, MIPS, POWER, SPARC, X86, Garnet_standalone, etc. This will build an optimized version of the gem5 binary (gem5.opt) with the the specified configuration. See http://www.gem5.org/documentation/general_docs/building for more details and options. The main source tree includes these subdirectories: - build_opts: pre-made default configurations for gem5 - build_tools: tools used internally by gem5's build process. - configs: example simulation configuration scripts - ext: less-common external packages needed to build gem5 - include: include files for use in other programs - site_scons: modular components of the build system - 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 may need compiled system firmware, kernel binaries and one or more disk images, depending on gem5's configuration and what type of workload you're trying to run. Many of those resources can be downloaded from http://resources.gem5.org, and/or from the git repository here: https://gem5.googlesource.com/public/gem5-resources/ If you have questions, please send mail to gem5-users@gem5.org Enjoy using gem5 and please share your modifications and extensions.