@@ -338,3 +338,81 @@ Feature detection flags:
338338* `` __wasm_bulk_memory__ ``
339339* `` __wasm_atomics__ ``
340340* `` __wasm_mutable_globals__ ``
341+
342+ ##Install SDKs and dependencies manually
343+
344+ In some cases (e.g. build bots) you may prefer to install build dependencies
345+ directly on the system instead of using the container image. Total disk size
346+ of SDKs and cached libraries is about 1.6 GB.
347+
348+ ###Install OS dependencies
349+
350+ ``` shell
351+ # Debian/Ubuntu
352+ apt update
353+ apt install -y git make xz-utils bzip2 curl python3-minimal ccache
354+ ```
355+
356+ ``` shell
357+ # Fedora
358+ dnf install -y git make xz bzip2 which ccache
359+ ```
360+
361+ ###Install[ Emscripten SDK] ( https://emscripten.org/docs/getting_started/downloads.html )
362+
363+ ** NOTE** : Follow the on-screen instructions how to add the SDK to`` PATH `` .
364+
365+ ``` shell
366+ git clone https://github.com/emscripten-core/emsdk.git /opt/emsdk
367+ /opt/emsdk/emsdk install latest
368+ /opt/emsdk/emsdk activate latest
369+ ```
370+
371+ ###Optionally: pre-build and cache static libraries
372+
373+ Emscripten SDK provides static builds of core libraries without PIC
374+ (position-independent code). Python builds with`` dlopen `` support require
375+ PIC. To populate the build cache, run:
376+
377+ ``` shell
378+ . /opt/emsdk/emsdk_env.sh
379+ embuilder build --force zlib bzip2
380+ embuilder build --force --pic \
381+ zlib bzip2 libc-mt libdlmalloc-mt libsockets-mt \
382+ libstubs libcompiler_rt libcompiler_rt-mt crtbegin libhtml5 \
383+ libc++-mt-noexcept libc++abi-mt-noexcept \
384+ libal libGL-mt libstubs-debug libc-mt-debug
385+ ```
386+
387+ ###Install[ WASI-SDK] ( https://github.com/WebAssembly/wasi-sdk )
388+
389+ ** NOTE** : WASI-SDK's clang may show a warning on Fedora:
390+ `` /lib64/libtinfo.so.6: no version information available `` ,
391+ [ RHBZ #1875587 ] ( https://bugzilla.redhat.com/show_bug.cgi?id=1875587 ) .
392+
393+ ``` shell
394+ export WASI_VERSION=16
395+ export WASI_VERSION_FULL=${WASI_VERSION} .0
396+ curl -sSf -L -O https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-${WASI_VERSION} /wasi-sdk-${WASI_VERSION_FULL} -linux.tar.gz
397+ mkdir -p /opt/wasi-sdk
398+ tar --strip-components=1 -C /opt/wasi-sdk -xvf wasi-sdk-${WASI_VERSION_FULL} -linux.tar.gz
399+ rm -f wasi-sdk-${WASI_VERSION_FULL} -linux.tar.gz
400+ ```
401+
402+ ###Install[ wasmtime] ( https://github.com/bytecodealliance/wasmtime ) WASI runtime
403+
404+ ** NOTE** : wasmtime 0.37 has a bug. Newer versions should be fine again.
405+
406+ ``` shell
407+ curl -sSf -L -o~ /install-wasmtime.sh https://wasmtime.dev/install.sh
408+ chmod +x~ /install-wasmtime.sh
409+ ~ /install-wasmtime.sh --version v0.36.0
410+ ln -srf -t /usr/local/bin/~ /.wasmtime/bin/wasmtime
411+ ```
412+
413+ ###Install[ WASIX] ( https://github.com/singlestore-labs/wasix )
414+
415+ ``` shell
416+ git clone https://github.com/singlestore-labs/wasix.git~ /wasix
417+ make install -C~ /wasix
418+ ```