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Update BLST, add force-adx support (#1595)

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## Issue Addressed

Closes #1504
Closes https://github.com/sigp/lighthouse/issues/1505

## Proposed Changes

* Update `blst` to the latest version, which is more portable and includes finer-grained compilation controls (see below).
* Detect the case where a binary has been explicitly compiled with ADX support but it's missing at runtime, and report a nicer error than `SIGILL`.

## Known Issues

* None. The previous issue with `make build-aarch64` (https://github.com/supranational/blst/issues/27), has been resolved.

## Additional Info

I think we should tweak our release process and our Docker builds so that we provide two options:

Binaries:

* `lighthouse`: compiled with `modern`/`force-adx`, for CPUs 2013 and newer
* `lighthouse-portable`: compiled with `portable` for older CPUs

Docker images:

* `sigp/lighthouse:latest`: multi-arch image with `modern` x86_64 and vanilla aarch64 binary
* `sigp/lighthouse:latest-portable`: multi-arch image with `portable` builds for x86_64 and aarch64

And relevant Docker images for the releases (as per https://github.com/sigp/lighthouse/pull/1574#issuecomment-687766141), tagged `v0.x.y` and `v0.x.y-portable`
This commit is contained in:
Michael Sproul
2020-09-22 05:40:02 +00:00
parent d85d5a435e
commit 4fca306397
5 changed files with 23 additions and 12 deletions
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18
book/src/cross-compiling.md
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@@ -18,17 +18,15 @@ project.
The `Makefile` in the project contains four targets for cross-compiling:
- `build-x86_64`: builds an optimized version for x86_64 processors (suitable
for most users).
- `build-x86_64-portable`: builds a version x86_64 processors which avoids
using some modern CPU instructions that might cause an "illegal
instruction" error on older CPUs.
- `build-aarch64`: builds an optimized version for 64bit ARM processors
- `build-x86_64`: builds an optimized version for x86_64 processors (suitable for most users).
Supports Intel Broadwell (2014) and newer, and AMD Ryzen (2017) and newer.
- `build-x86_64-portable`: builds a version for x86_64 processors which avoids using some modern CPU
instructions that are incompatible with older CPUs. Suitable for pre-Broadwell/Ryzen CPUs.
- `build-aarch64`: builds an optimized version for 64-bit ARM processors
(suitable for Raspberry Pi 4).
- `build-aarch64-portable`: builds a version 64 bit ARM processors which avoids
using some modern CPU instructions that might cause an "illegal
instruction" error on older CPUs.
- `build-aarch64-portable`: builds a version for 64-bit ARM processors which avoids using some
modern CPU instructions. In practice, very few ARM processors lack the instructions necessary to
run the faster non-portable build.
### Example