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gh-84461: Document how to install SDKs manually (GH-93844) by tiran · Pull Request #93844 · python/cpython · GitHub

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gh-84461: Document how to install SDKs manually (GH-93844) #93844

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tiran merged 3 commits into from
Jun 15, 2022
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gh-84461: Document how to install SDKs manually (GH-93844) #93844

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27a0e1c
gh-84461: Document how to install SDKs manually
tiran Jun 15, 2022
fd040fd
Use my tested fork with nicer Makefile
tiran Jun 15, 2022
cec8b05
Use upstream main for WASIX
tiran Jun 15, 2022
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78 changes: 78 additions & 0 deletions Tools/wasm/README.md
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Expand Up @@ -338,3 +338,81 @@ Feature detection flags:
* ``__wasm_bulk_memory__``
* ``__wasm_atomics__``
* ``__wasm_mutable_globals__``

## Install SDKs and dependencies manually

In some cases (e.g. build bots) you may prefer to install build dependencies
directly on the system instead of using the container image. Total disk size
of SDKs and cached libraries is about 1.6 GB.

### Install OS dependencies

```shell
# Debian/Ubuntu
apt update
apt install -y git make xz-utils bzip2 curl python3-minimal ccache
```

```shell
# Fedora
dnf install -y git make xz bzip2 which ccache
```

### Install [Emscripten SDK](https://emscripten.org/docs/getting_started/downloads.html)

**NOTE**: Follow the on-screen instructions how to add the SDK to ``PATH``.

```shell
git clone https://github.com/emscripten-core/emsdk.git /opt/emsdk
/opt/emsdk/emsdk install latest
/opt/emsdk/emsdk activate latest
```

### Optionally: pre-build and cache static libraries

Emscripten SDK provides static builds of core libraries without PIC
(position-independent code). Python builds with ``dlopen`` support require
PIC. To populate the build cache, run:

```shell
. /opt/emsdk/emsdk_env.sh
embuilder build --force zlib bzip2
embuilder build --force --pic \
zlib bzip2 libc-mt libdlmalloc-mt libsockets-mt \
libstubs libcompiler_rt libcompiler_rt-mt crtbegin libhtml5 \
libc++-mt-noexcept libc++abi-mt-noexcept \
libal libGL-mt libstubs-debug libc-mt-debug
```

### Install [WASI-SDK](https://github.com/WebAssembly/wasi-sdk)

**NOTE**: WASI-SDK's clang may show a warning on Fedora:
``/lib64/libtinfo.so.6: no version information available``,
[RHBZ#1875587](https://bugzilla.redhat.com/show_bug.cgi?id=1875587).

```shell
export WASI_VERSION=16
export WASI_VERSION_FULL=${WASI_VERSION}.0
curl -sSf -L -O https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-${WASI_VERSION}/wasi-sdk-${WASI_VERSION_FULL}-linux.tar.gz
mkdir -p /opt/wasi-sdk
tar --strip-components=1 -C /opt/wasi-sdk -xvf wasi-sdk-${WASI_VERSION_FULL}-linux.tar.gz
rm -f wasi-sdk-${WASI_VERSION_FULL}-linux.tar.gz
```

### Install [wasmtime](https://github.com/bytecodealliance/wasmtime) WASI runtime

**NOTE**: wasmtime 0.37 has a bug. Newer versions should be fine again.

```shell
curl -sSf -L -o ~/install-wasmtime.sh https://wasmtime.dev/install.sh
chmod +x ~/install-wasmtime.sh
~/install-wasmtime.sh --version v0.36.0
ln -srf -t /usr/local/bin/ ~/.wasmtime/bin/wasmtime
```

### Install [WASIX](https://github.com/singlestore-labs/wasix)

```shell
git clone https://github.com/singlestore-labs/wasix.git ~/wasix
make install -C ~/wasix
```
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