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Build gem5 through buildroot

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Oh, btw, also make it work, since the build was completely broken since
the recent -K refactoring :0)
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Ciro Santilli
2018-03-12 03:46:53 +00:00
parent 7b08433840
commit b8413532a5
6 changed files with 45 additions and 31 deletions
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gem5/README.adoc Normal file
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= gem5
We Build gem5 as a Buildroot package for the following reasons:
* if we build in tree without Buildroot, we still want to build the `m5` tool through Buildroot. But then Buildroot rsyncs the build for all archs into `output/build`, which takes quite some disk space. There seems to be no way to exclude some packages from the sync.
* it allows us to reuse Buildroot's:
** configuration system, which reduces duplication: set the gem5 package option, everything just gets built
** timestamping system, which could save a few seconds on rebuilds, since we then don't ever run `scons` when gem5 is not modified
What is preventing upstreaming to Buildroot: a minimal kernel config like the ones QEMU has.