We currently bundle a version of elfutils with patches to export
additional stack tracing functionality. This has a few drawbacks:
- Most of drgn's build time is actually building elfutils.
- Distributions don't like packages that bundle verions of other
packages.
- elfutils, and thus drgn, can't be built with clang.
Now that we've replaced the elfutils DWARF unwinder with our own, we
don't need the patches, so we can drop the bundled elfutils and fix
these issues.
Signed-off-by: Omar Sandoval <osandov@osandov.com>
Apparently the package index can be out of date on the newly brought up
VM, leading to 404s, so make sure to update it first.
Signed-off-by: Omar Sandoval <osandov@osandov.com>
Travis CI is no longer offering free open source CI, so migrate to
GitHub Actions. The only downside is that GitHub Actions doesn't support
nested virtualization, but we can work around that by falling back to
slow emulation.
Signed-off-by: Omar Sandoval <osandov@osandov.com>
