Building from Source
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Building Wasmer from source requires 1.45+.
The easiest way to install Rust on your system is via Rustup. To get Rustup on Linux and macOS, you can run the following:
If you have installed:
Or, if you have :
Windows support is experimental. WASI is fully supported, but Emscripten support is in the works.
First, let's clone Wasmer:
Wasmer supports three different compilers at the moment:
Build Wasmer:
Note: you should see this as the first line in the console:
Available compilers: singlepass
The Cranelift compiler will work if you are in a X86 or ARM machine, so you don't need to do anything in your system to enable it.
Note: should see this as the first line in the console:
Available backends: cranelift
If you want support for the Wasmer LLVM backend, then you will also need to ensure:
Ensure that LLVM 8.0.x > is installed on your system
In case llvm-config
is not accessible, set the correct environment variable for LLVM to access: For example, the environment variable for LLVM 8.0.x would be: LLVM_SYS_80_PREFIX=/path/to/unpacked/llvm-8.0
And create a Wasmer release
Note: you should see this as the first line in the console:
Available backends: llvm
Once you have LLVM and Rust, you can just run:
Note: you should see this as the first line in the console:
Available backends: singlepass cranelift llvm
Once you run the make build-wasmer
command, you will have a new binary ready to be used!
However, you can also compile the shared library from source:
This will generate the shared library (depending on your system):
Windows: target/release/wasmer_runtime_c_api.dll
macOS: target/release/libwasmer_runtime_c_api.dylib
Linux: target/release/libwasmer_runtime_c_api.so
By default, the Wasmer C API shared library is built with Cranelift as the default backend and JIT enabled. You can generate the C-API for a specific backend with:
Singlepass: make build-capi-singlepass-jit
Cranelift:
JIT: make build-capi-cranelift-jit
Native Engine: make build-capi-cranelift-native
LLVM: make build-capi-llvm
JIT: make build-capi-llvm-jit
Native Engine: make build-capi-llvm-native
If you want to generate the library and headers for using them easily, you can execute:
Install
Install
Install . Allow it to add git.exe
to your PATH (default settings for the installer are fine).
Install . Ensure CMake is in your PATH.
(optional) Install
Wasmer is built with , the Rust package manager.
You can also
Wasmer provides a pre-compiled version for the C-API on its .
This command will generate a package
directory, that you can then use easily in the .