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Use lz4 instead of zstd, add prebuilt static library

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Rien Maertens
2020-03-17 23:44:55 +01:00
parent c9af230f3a
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README.md
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@ -29,19 +29,15 @@ On your **reMarkable** nothing is needed, unless you want...
### Sub-second latency
To achieve sub-second latency, you'll need [zstd](https://zstd.net) on your
host and on your reMarkable.
To achieve sub-second latency, you'll need [lz4](https://github.com/lz4/lz4)
on your host and on your reMarkable.
You can install `zstd` on your host with your usual package manager. On Ubuntu,
`apt install zstd` will work.
You can install `lz4` on your host with your usual package manager. On Ubuntu,
`apt install liblz4-tool` will do the trick.
On your **reMarkable** you can do `opkg install zstd` if you have [entware](https://github.com/evidlo/remarkable_entware) installed. If you don't you can use the binary provided in this repository. In general you shouldn't trust binaries strangers on the internet provide to you, but I provide the option if you don't want the hassle of installing entware.
You can install `zstd` on your reMarkable with the following steps:
- Copy zstd: `scp zstd.arm root@10.11.99.1:~/zstd`
- SSH to your reMarkable `ssh root@10.11.99.1`
- Create the opt lib directory `mkdir -p /opt/lib`
- Symlink a needed library `ln -s /lib/ld-linux-armhf.so.3 /opt/lib/ld-linux.so.3`
This is currently a bit cumbersome. I'm trying to make this a bit easier.
On your **reMarkable** you'll need a binary of `lz4` build for the arm platform,
you can do this yourself by [installing the reMarkable toolchain](https://remarkablewiki.com/devel/qt_creator#toolchain)
and compiling `lz4` from source with the toolchain enabled, or you can use the
statically linked binary I have already built and put in this repo.
Copy the `lz4` program to your reMarkable with `scp lz4.arm.static root@10.11.99.1:~/lz4` and you're ready to go.