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Improve default compiler story for wasmer cli

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This commit reenables the clif compiler as the default for wasmer cli,
updates an error message, and adds a compile_error if no backends are enabled.
This commit is contained in:
Mark McCaskey 2019-12-02 15:34:40 -08:00
parent d639748a20
commit ab111443be
2 changed files with 14 additions and 2 deletions
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2
Cargo.toml
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@ -74,7 +74,7 @@ serde = { version = "1", features = ["derive"] } # used by the plugin example
typetag = "0.1" # used by the plugin example typetag = "0.1" # used by the plugin example
[features] [features]
default = ["fast-tests", "wasi"] default = ["fast-tests", "wasi", "backend-cranelift"]
"loader-kernel" = ["wasmer-kernel-loader"] "loader-kernel" = ["wasmer-kernel-loader"]
debug = ["wasmer-runtime-core/debug"] debug = ["wasmer-runtime-core/debug"]
trace = ["wasmer-runtime-core/trace"] trace = ["wasmer-runtime-core/trace"]

14
src/bin/wasmer.rs
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@ -40,6 +40,13 @@ use wasmer_runtime_core::{
#[cfg(feature = "wasi")] #[cfg(feature = "wasi")]
use wasmer_wasi; use wasmer_wasi;
#[cfg(all(
not(feature = "backend-cranelift"),
not(feature = "backend-llvm"),
not(feature = "backend-singlepass")
))]
compile_error!("Please enable at least one of the compiler backends");
#[derive(Debug, StructOpt)] #[derive(Debug, StructOpt)]
#[structopt(name = "wasmer", about = "Wasm execution runtime.", author)] #[structopt(name = "wasmer", about = "Wasm execution runtime.", author)]
/// The options for the wasmer Command Line Interface /// The options for the wasmer Command Line Interface
@ -560,7 +567,12 @@ fn execute_wasm(options: &Run) -> Result<(), String> {
let compiler: Box<dyn Compiler> = match get_compiler_by_backend(options.backend, options) { let compiler: Box<dyn Compiler> = match get_compiler_by_backend(options.backend, options) {
Some(x) => x, Some(x) => x,
None => return Err("the requested backend is not enabled".into()), None => {
return Err(format!(
"the requested backend, \"{}\", is not enabled",
options.backend.to_string()
))
}
}; };
#[cfg(feature = "backend-llvm")] #[cfg(feature = "backend-llvm")]