e245e6dd9c
* Add examples of linking and WASI This commit adds two example programs, one for linking two modules together and one for instantiating WASI. The linkage example additionally uses WASI to get some meaningful output at this time. cc #1272 * Add examples to the book as well * More links! * Ignore examples from rustdoc testsing * More example updates * More ignored
101 lines
3.1 KiB
Rust
101 lines
3.1 KiB
Rust
use std::collections::BTreeSet;
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use std::process::Command;
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fn main() {
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let example_to_run = std::env::args().nth(1);
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let examples = std::fs::read_dir("examples").unwrap();
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let examples = examples
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.filter_map(|e| {
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let e = e.unwrap();
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let path = e.path();
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let dir = e.metadata().unwrap().is_dir();
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if let Some("wat") = path.extension().and_then(|s| s.to_str()) {
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return None;
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}
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Some((path.file_stem().unwrap().to_str().unwrap().to_owned(), dir))
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})
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.collect::<BTreeSet<_>>();
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println!("======== Building libwasmtime.a ===========");
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run(Command::new("cargo")
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.args(&["build"])
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.current_dir("crates/c-api"));
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for (example, is_dir) in examples {
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if example == "README" {
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continue;
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}
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if let Some(example_to_run) = &example_to_run {
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if !example.contains(&example_to_run[..]) {
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continue;
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}
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}
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if is_dir {
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println!("======== Rust wasm file `{}` ============", example);
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let target = if example == "fib-debug" {
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"wasm32-unknown-unknown"
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} else {
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"wasm32-wasi"
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};
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run(Command::new("cargo")
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.arg("build")
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.arg("-p")
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.arg(format!("example-{}-wasm", example))
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.arg("--target")
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.arg(target));
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}
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println!("======== Rust example `{}` ============", example);
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run(Command::new("cargo")
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.arg("run")
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.arg("--example")
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.arg(&example));
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println!("======== C example `{}` ============", example);
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let mut cmd = cc::Build::new()
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.opt_level(0)
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.cargo_metadata(false)
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.target(env!("TARGET"))
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.host(env!("TARGET"))
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.include("crates/c-api/include")
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.include("crates/c-api/wasm-c-api/include")
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.define("WASM_API_EXTERN", Some("")) // static linkage, not dynamic
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.warnings(false)
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.get_compiler()
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.to_command();
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if is_dir {
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cmd.arg(format!("examples/{}/main.c", example));
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} else {
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cmd.arg(format!("examples/{}.c", example));
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}
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let exe = if cfg!(windows) {
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cmd.arg("target/debug/wasmtime.lib")
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.arg("ws2_32.lib")
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.arg("advapi32.lib")
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.arg("userenv.lib")
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.arg("ntdll.lib")
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.arg("shell32.lib")
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.arg("ole32.lib");
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"./main.exe"
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} else {
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cmd.arg("target/debug/libwasmtime.a").arg("-o").arg("foo");
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"./foo"
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};
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if cfg!(target_os = "linux") {
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cmd.arg("-lpthread").arg("-ldl").arg("-lm");
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}
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run(&mut cmd);
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run(&mut Command::new(exe));
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}
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}
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fn run(cmd: &mut Command) {
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let s = cmd.status().unwrap();
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if !s.success() {
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eprintln!("failed to run {:?}", cmd);
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eprintln!("status: {}", s);
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std::process::exit(1);
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}
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}
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