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[project] Update README for previous bonnibel update

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This readme update on building jsix was long overdue.
This commit is contained in:
Justin C. Miller
2021-08-07 10:11:13 -07:00
parent 03d4a9ba3c
commit 75b5d11181
1 changed files with 34 additions and 19 deletions
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README.md
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@@ -98,31 +98,41 @@ Major tasks still to do:
## Building ## Building
jsix uses the [Ninja][] build tool, and generates the build files for it with a jsix uses the [Ninja][] build tool, and generates the build files for it with a
custom tool called [Bonnibel][]. Bonnibel can be installed with [Cargo][], or custom tool called [Bonnibel][]. The build also relies on a custom sysroot,
downloaded as a prebuilt binary from its Github repository. which can be downloaded via the [Peru][] tool, or built locally.
[Ninja]: https://ninja-build.org [Ninja]: https://ninja-build.org
[Bonnibel]: https://github.com/justinian/bonnibel_rs [Bonnibel]: https://github.com/justinian/bonnibel
[Cargo]: https://crates.io/crates/bonnibel [Pery]: https://github.com/buildinspace/peru
Requrirements: Requrirements:
* bonnibel * Bonnibel
* ninja * ninja
* clang * clang & lld
* nasm * nasm
* mtools * mtools
* curl for downloading the toolchain * curl and Peru if downloading the toolchain
### Setting up the cross toolchain Both Bonnibel and Peru can be installed via `pip`:
Running `pb sync` will download and unpack the toolchain into `sysroot`. ```sh
pip3 install --user -U bonnibel peru
```
#### Compiling the toolchain yourself ### Setting up the sysroot
If you have `clang` and `curl` installed, runing the `scripts/build_sysroot.sh` Running `peru sync` will download and unpack the toolchain into `sysroot`.
script will download and build a LLVM toolchain configured for building jsix
host binaries. #### Compiling the sysroot yourself
If you have CMake installed, runing the `scripts/build_sysroot.sh`
script will download and build a LLVM toolchain configured for building the
sysroot, and then build the sysroot with it.
Built sysroots are actually stored in `~/.local/lib/jsix/sysroots` and installed
in the project dir via symbolic link, so having mulitple jsix working trees or
switching sysroot versions is easy.
### Building and running jsix ### Building and running jsix
@@ -132,11 +142,16 @@ you have `qemu-system-x86_64` installed, the `qemu.sh` script will to run jsix
in QEMU `-nographic` mode. in QEMU `-nographic` mode.
I personally run this either from a real debian amd64 testing/buster machine or I personally run this either from a real debian amd64 testing/buster machine or
a windows WSL debian testing/buster installation. The following should be a windows WSL debian testing/buster installation. After installing
enough to set up such a system to build the kernel: [the LLVM APT sources][llvm], the following should be enough to set up such a
system to build the kernel:
sudo apt install qemu-system-x86 nasm clang-10 mtools curl ninja-build ```sh
sudo update-alternatives /usr/bin/clang clang /usr/bin/clang-10 1000 pip3 install --user -U bonnibel peru
sudo update-alternatives /usr/bin/clang++ clang++ /usr/bin/clang++-10 1000 sudo apt install qemu-system-x86 nasm clang-11 lld-11 mtools curl ninja-build
curl -L -o pb https://github.com/justinian/bonnibel_rs/releases/download/v2.3.0/pb-linux-amd64 && chmod a+x pb sudo update-alternatives /usr/bin/clang clang /usr/bin/clang-11 1100
sudo update-alternatives /usr/bin/clang++ clang++ /usr/bin/clang++-11 1100
sudo update-alternatives /usr/bin/ld.lld ld.lld /usr/bin/ld.lld-11 1100
```
[llvm]: https://apt.llvm.org