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Doc: Update Gitian (Reproducible Builds) with small code snippets and fixes

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mj-xmr 2021-04-10 10:53:12 +02:00
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contrib/gitian/README.md
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@ -36,6 +36,10 @@ This guide explains how to set up the environment, and how to start the builds.
You need to create a new user called `gitianuser` and be logged in as that user. The user needs `sudo` access. You need to create a new user called `gitianuser` and be logged in as that user. The user needs `sudo` access.
```bash
sudo adduser gitianuser
sudo usermod -aG sudo gitianuser
```
LXC LXC
--- ---
@ -83,7 +87,7 @@ Docker
Prepare for building with docker: Prepare for building with docker:
```bash ```bash
sudo apt-get install git make curl docker.io sudo bash -c 'apt-get update && apt-get upgrade -y && apt-get install git curl docker.io'
``` ```
Consider adding `gitianuser` to the `docker` group after reading about [the security implications](https://docs.docker.com/v17.09/engine/installation/linux/linux-postinstall/): Consider adding `gitianuser` to the `docker` group after reading about [the security implications](https://docs.docker.com/v17.09/engine/installation/linux/linux-postinstall/):
@ -96,13 +100,12 @@ sudo usermod -aG docker gitianuser
Optionally add yourself to the docker group. Note that this will give docker root access to your system. Optionally add yourself to the docker group. Note that this will give docker root access to your system.
```bash ```bash
sudo usermod -aG docker gitianuser sudo usermod -aG docker $USER
``` ```
Manual Building Manual Building
------------------- -------------------
The instructions below use the automated script [gitian-build.py](gitian-build.py) which only works in Ubuntu.
======= =======
The script automatically installs some packages with apt. If you are not running it on a debian-like system, pass `--no-apt` along with the other The script automatically installs some packages with apt. If you are not running it on a debian-like system, pass `--no-apt` along with the other
arguments to it. It calls all available .yml descriptors, which in turn pass the build configurations for different platforms to gitian. arguments to it. It calls all available .yml descriptors, which in turn pass the build configurations for different platforms to gitian.
@ -122,17 +125,23 @@ cp monero/contrib/gitian/gitian-build.py .
### Setup the required environment ### Setup the required environment
Setup for LXC: Common setup part:
```bash ```bash
GH_USER=fluffypony su - gitianuser
VERSION=v0.17.0.0
./gitian-build.py --setup $GH_USER $VERSION GH_USER=YOUR_GITHUB_USER_NAME
VERSION=v0.17.2.0
``` ```
Where `GH_USER` is your Github user name and `VERSION` is the version tag you want to build. Where `GH_USER` is your Github user name and `VERSION` is the version tag you want to build.
Setup for LXC:
```bash
./gitian-build.py --setup $GH_USER $VERSION
```
Setup for docker: Setup for docker:
```bash ```bash
@ -145,8 +154,10 @@ fork the [gitian.sigs repository](https://github.com/monero-project/gitian.sigs)
or pass the signed assert file back to your build machine. or pass the signed assert file back to your build machine.
```bash ```bash
git clone git@github.com:monero-project/gitian.sigs.git git clone https://github.com/monero-project/gitian.sigs/
git remote add $GH_USER git@github.com:$GH_USER/gitian.sigs.git pushd gitian.sigs
git remote add $GH_USER https://github.com/$GH_USER/gitian.sigs
popd
``` ```
Build the binaries Build the binaries
@ -154,13 +165,26 @@ Build the binaries
**Note:** if you intend to build MacOS binaries, please follow [these instructions](https://github.com/bitcoin-core/docs/blob/master/gitian-building/gitian-building-mac-os-sdk.md) to get the required SDK. **Note:** if you intend to build MacOS binaries, please follow [these instructions](https://github.com/bitcoin-core/docs/blob/master/gitian-building/gitian-building-mac-os-sdk.md) to get the required SDK.
Currently working MacOS solution:
```bash
curl -O https://bitcoincore.org/depends-sources/sdks/MacOSX10.11.sdk.tar.gz
mv MacOSX10.11.sdk.tar.gz builder/inputs
```
To build the most recent tag (pass in `--docker` if using docker): To build the most recent tag (pass in `--docker` if using docker):
```bash ```bash
./gitian-build.py --detach-sign --no-commit --build $GH_USER $VERSION ./gitian-build.py --detach-sign --no-commit --build $GH_USER $VERSION
``` ```
To speed up the build, use `-j 5 --memory 5000` as the first arguments, where `5` is the number of CPU's you allocated to the VM plus one, and 5000 is a little bit less than then the MB's of RAM you allocated. If there is memory corruption on your machine, try to tweak these values. To speed up the build, use `-j 5 --memory 10000` as the first arguments, where `5` is the number of CPU's you allocated to the VM plus one, and 10000 is a little bit less than then the MB's of RAM you allocated. If there is memory corruption on your machine, try to tweak these values. A good rule of thumb is, that Monero currently needs about 2 GB of RAM per core.
A full example for `docker` would look like the following:
```bash
./gitian-build.py -j 5 --memory 10000 --docker --detach-sign --no-commit --build $GH_USER $VERSION
```
If all went well, this produces a number of (uncommitted) `.assert` files in the gitian.sigs directory. If all went well, this produces a number of (uncommitted) `.assert` files in the gitian.sigs directory.
@ -171,6 +195,22 @@ Take a look in the assert files and note the SHA256 checksums listed there.
You should verify that the checksum that is listed matches each of the binaries you actually built. You should verify that the checksum that is listed matches each of the binaries you actually built.
This may be done on Linux using the `sha256sum` command or on MacOS using `shasum --algorithm 256` for example. This may be done on Linux using the `sha256sum` command or on MacOS using `shasum --algorithm 256` for example.
An example script to verify the checksums would be:
```bash
pushd out/${VERSION}
for ASSERT in ../../sigs/${VERSION}-*/*/*.assert; do
if ! sha256sum --ignore-missing -c "${ASSERT}" ; then
echo "FAILED for ${ASSERT} ! Please inspect manually."
fi
done
popd
```
Don't ignore the incorrect formatting of the found assert files. These files you'll have to compare manually (currently OSX and FreeBSD).
You can also look in the [gitian.sigs](https://github.com/monero-project/gitian.sigs/) repo and / or [getmonero.org release checksums](https://web.getmonero.org/downloads/hashes.txt) to see if others got the same checksum for the same version tag. If there is ever a mismatch -- **STOP! Something is wrong**. Contact others on IRC / github to figure out what is going on. You can also look in the [gitian.sigs](https://github.com/monero-project/gitian.sigs/) repo and / or [getmonero.org release checksums](https://web.getmonero.org/downloads/hashes.txt) to see if others got the same checksum for the same version tag. If there is ever a mismatch -- **STOP! Something is wrong**. Contact others on IRC / github to figure out what is going on.
@ -181,14 +221,7 @@ Signing assert files
If you chose to do detached signing using `--detach-sign` above (recommended), you need to copy these uncommitted changes to your host machine, then sign them using your gpg key like so: If you chose to do detached signing using `--detach-sign` above (recommended), you need to copy these uncommitted changes to your host machine, then sign them using your gpg key like so:
```bash ```bash
GH_USER=fluffypony for ASSERT in sigs/${VERSION}-*/*/*.assert; do gpg --detach-sign ${ASSERT}; done
VERSION=v0.17.0.0
gpg --detach-sign ${VERSION}-linux/${GH_USER}/monero-linux-*-build.assert
gpg --detach-sign ${VERSION}-win/${GH_USER}/monero-win-*-build.assert
gpg --detach-sign ${VERSION}-osx/${GH_USER}/monero-osx-*-build.assert
gpg --detach-sign ${VERSION}-android/${GH_USER}/monero-android-*-build.assert
gpg --detach-sign ${VERSION}-freebsd/${GH_USER}/monero-freebsd-*-build.assert
``` ```
This will create a `.sig` file for each `.assert` file above (2 files for each platform). This will create a `.sig` file for each `.assert` file above (2 files for each platform).
@ -201,6 +234,7 @@ Make a pull request (both the `.assert` and `.assert.sig` files) to the
[monero-project/gitian.sigs](https://github.com/monero-project/gitian.sigs/) repository: [monero-project/gitian.sigs](https://github.com/monero-project/gitian.sigs/) repository:
```bash ```bash
cd gitian.sigs
git checkout -b $VERSION git checkout -b $VERSION
# add your assert and sig files... # add your assert and sig files...
git commit -S -a -m "Add $GH_USER $VERSION" git commit -S -a -m "Add $GH_USER $VERSION"