Setup your C/C++ environment
To build C applications that use the Wasmer runtime as a host for guest Wasm modules, you will need a C compiler installed (
clang or gcc, for example). Check the compiler installation instructions here.Starting with Wasmer 1.0 all the releases ship with the required libraries and headers to use Wasmer from C and C++.
If you haven't yet, let's install Wasmer:
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curl https://get.wasmer.io -sSfL | sh
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Once Wasmer is installed, you can get the
pkg-config easily:1
$ wasmer config --pkg-config
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prefix=/Users/USER/.wasmer
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exec_prefix=/Users/USER/.wasmer/bin
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includedir=/Users/USER/.wasmer/include
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libdir=/Users/syrus/.wasmer/lib
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Name: wasmer
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Description: The Wasmer library for running WebAssembly
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Version: 2.0.0
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Cflags: -I/Users/USER/.wasmer/include/wasmer
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Libs: -L/Users/syrus/.wasmer/lib -lwasmer
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Manual Installation
- Linux:
wasmer-linux-amd64.tar.gzorwasmer-linux-aarch64.tar.gz - macOS:
wasmer-darwin-amd64.tar.gzorwasmer-darwin-arm64.tar.gz - Windows:
wasmer-windows.tar.gz
Once you have downloaded the framework, you can now extract its contents and set the
WASMER_DIR environment variable to the path of the wasmer directory (this will be very useful when running the examples):1
# Extract the contents to a dir
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mkdir wasmer
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tar -C wasmer -zxvf wasmer-*.tar.gz
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export WASMER_DIR=$(pwd)/wasmer
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# Update LD_LIBRARY_PATH to link against the libwasmer.so in the examples
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export LD_LIBRARY_PATH=$WASMER_DIR/lib/:$LD_LIBRARY_PATH
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Installing Clang/GCC
First, you can test if
clang or gcc is installed already by running:1
gcc --version
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If this command does not return the version, then see the following:
MacOS
gcc / clang is usually installed by default. However, if it is not, you can install gcc/clang by installing xcode-select on your mac.Debian / Debian Based / Linux
To install gcc on a Debian based, you will want to run the following:
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sudo apt-get install build-essential
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Gcc should be installable on your favorite linux distro as well. Please search for the correct command for your desired distribution.
Windows
To install gcc on Windows, you will probably want to install a GNU environment on windows. We suggest using MinGW.
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gcc --version
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# This should output: "ATTRIBUTIONS LICENSE bin include lib"
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ls $WASMER_DIR
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If these commands work, The compiler and the Wasmer C API are successfully installed!
Next, let's take a look at some examples!
Last modified 2mo ago