Merge pull request #353 from rustwasm/rustc-version-check

feat(build): add rustc check
7 years ago · d5d3358ff3
parent 69982de8cc 0c696e2289
commit d5d3358ff3
6 changed files with 131 additions and 70 deletions
--- a/Cargo.lock
+++ b/Cargo.lock
@ -16,7 +16,7 @@ name = "ansi_term"
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 source = "registry+https://github.com/rust-lang/crates.io-index"
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+ "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

 [[package]]
@ -26,7 +26,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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+ "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
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 [[package]]
@ -38,7 +38,7 @@ dependencies = [
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- "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
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 [[package]]
@ -92,7 +92,7 @@ dependencies = [
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- "serde_json 1.0.28 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.30 (registry+https://github.com/rust-lang/crates.io-index)",
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 [[package]]
@ -137,7 +137,7 @@ dependencies = [
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 "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
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 [[package]]
@ -161,7 +161,7 @@ dependencies = [
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- "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
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 [[package]]
@ -194,11 +194,11 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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 "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
- "libz-sys 1.0.22 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libz-sys 1.0.23 (registry+https://github.com/rust-lang/crates.io-index)",
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- "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
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 [[package]]
@ -311,7 +311,7 @@ dependencies = [
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- "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
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 [[package]]
@ -338,7 +338,7 @@ name = "lazy_static"
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 [[package]]
@ -348,7 +348,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"

 [[package]]
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@ -373,7 +373,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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+ "version_check 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
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 [[package]]
@ -411,7 +411,7 @@ version = "0.1.6"
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 [[package]]
@ -499,7 +499,7 @@ dependencies = [
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- "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
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 [[package]]
@ -535,7 +535,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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- "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
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 [[package]]
@ -547,7 +547,7 @@ dependencies = [
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 [[package]]
@ -613,7 +613,7 @@ name = "remove_dir_all"
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 [[package]]
@ -640,7 +640,7 @@ version = "0.1.13"
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 [[package]]
@ -674,12 +674,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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 [[package]]
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@ -730,7 +730,7 @@ dependencies = [
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 [[package]]
@ -774,7 +774,7 @@ dependencies = [

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@ -800,7 +800,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"

 [[package]]
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@ -828,7 +828,7 @@ dependencies = [
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@ -949,7 +949,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"

 [[package]]
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@ -1002,7 +1002,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"

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--- a/README.md
+++ b/README.md
@ -24,6 +24,8 @@ visiting that repo!

 ## 🔮 Prerequisities

+This project requires Rust 1.30.0 or later.
+
 - [Development Environment](https://rustwasm.github.io/wasm-pack/book/prerequisites/index.html)
 - [Installation](https://rustwasm.github.io/wasm-pack/installer)
 - [Project Setup](https://rustwasm.github.io/wasm-pack/book/project-setup/index.html)
--- a/src/build.rs
+++ b/src/build.rs
@ -5,20 +5,62 @@ use error::Error;
 use progressbar::Step;
 use std::path::Path;
 use std::process::Command;
+use std::str;
 use PBAR;

+/// Ensure that `rustc` is present and that it is >= 1.30.0
+pub fn check_rustc_version(step: &Step) -> Result<String, Error> {
+    let msg = format!("{}Checking `rustc` version...", emoji::CRAB);
+    PBAR.step(step, &msg);
+    let local_minor_version = rustc_minor_version();
+    match local_minor_version {
+        Some(mv) => {
+            if mv < 30 {
+              return Err(Error::RustcVersion {
+                message: format!(
+                  "Your version of Rust, '1.{}', is not supported. Please install Rust version 1.30.0 or higher.",
+                  mv.to_string()
+                ),
+                local_minor_version: mv.to_string(),
+              })
+            } else {
+              Ok(mv.to_string())
+            }
+      },
+      None => Err(Error::RustcMissing {
+        message: "We can't figure out what your Rust version is- which means you might not have Rust installed. Please install Rust version 1.30.0 or higher.".to_string(),
+      }),
+    }
+}
+
+// from https://github.com/alexcrichton/proc-macro2/blob/79e40a113b51836f33214c6d00228934b41bd4ad/build.rs#L44-L61
+fn rustc_minor_version() -> Option<u32> {
+    macro_rules! otry {
+        ($e:expr) => {
+            match $e {
+                Some(e) => e,
+                None => return None,
+            }
+        };
+    }
+    let output = otry!(Command::new("rustc").arg("--version").output().ok());
+    let version = otry!(str::from_utf8(&output.stdout).ok());
+    let mut pieces = version.split('.');
+    if pieces.next() != Some("rustc 1") {
+        return None;
+    }
+    otry!(pieces.next()).parse().ok()
+}
+
 /// Ensure that `rustup` has the `wasm32-unknown-unknown` target installed for
-/// the `nightly` toolchain.
+/// current toolchain
 pub fn rustup_add_wasm_target(step: &Step) -> Result<(), Error> {
    let msg = format!("{}Adding WASM target...", emoji::TARGET);
    PBAR.step(step, &msg);
-    ensure_nightly()?;
    let output = Command::new("rustup")
        .arg("target")
        .arg("add")
        .arg("wasm32-unknown-unknown")
-        .arg("--toolchain")
-        .arg("nightly")
        .output()?;
    if !output.status.success() {
        let s = String::from_utf8_lossy(&output.stderr);
@ -28,34 +70,13 @@ pub fn rustup_add_wasm_target(step: &Step) -> Result<(), Error> {
    }
 }

-/// Ensure that the `nightly` toolchain is installed in `rustup`.
-fn ensure_nightly() -> Result<(), Error> {
-    let nightly_check = Command::new("rustc").arg("+nightly").arg("-V").output()?;
-    if !nightly_check.status.success() {
-        let res = Command::new("rustup")
-            .arg("toolchain")
-            .arg("install")
-            .arg("nightly")
-            .output()?;
-        if !res.status.success() {
-            let s = String::from_utf8_lossy(&res.stderr);
-            return Error::cli("Adding the nightly toolchain failed", s);
-        }
-    }
-    Ok(())
-}
-
-/// Run `cargo build` with the `nightly` toolchain and targetting
-/// `wasm32-unknown-unknown`.
+/// Run `cargo build` targetting `wasm32-unknown-unknown`.
 pub fn cargo_build_wasm(path: &Path, debug: bool, step: &Step) -> Result<(), Error> {
    let msg = format!("{}Compiling to WASM...", emoji::CYCLONE);
    PBAR.step(step, &msg);
    let output = {
        let mut cmd = Command::new("cargo");
-        cmd.current_dir(path)
-            .arg("+nightly")
-            .arg("build")
-            .arg("--lib");
+        cmd.current_dir(path).arg("build").arg("--lib");
        if !debug {
            cmd.arg("--release");
        }
@ -71,15 +92,11 @@ pub fn cargo_build_wasm(path: &Path, debug: bool, step: &Step) -> Result<(), Err
    }
 }

-/// Run `cargo build --tests` with the `nightly` toolchain and targetting
-/// `wasm32-unknown-unknown`.
+/// Run `cargo build --tests` targetting `wasm32-unknown-unknown`.
 pub fn cargo_build_wasm_tests(path: &Path, debug: bool) -> Result<(), Error> {
    let output = {
        let mut cmd = Command::new("cargo");
-        cmd.current_dir(path)
-            .arg("+nightly")
-            .arg("build")
-            .arg("--tests");
+        cmd.current_dir(path).arg("build").arg("--tests");
        if !debug {
            cmd.arg("--release");
        }
--- a/src/command/build.rs
+++ b/src/command/build.rs
@ -156,6 +156,7 @@ impl Build {
        }
        match &mode {
            BuildMode::Normal => steps![
+                step_check_rustc_version,
                step_check_crate_config,
                step_add_wasm_target,
                step_build_wasm,
@ -166,6 +167,7 @@ impl Build {
                step_run_wasm_bindgen,
            ],
            BuildMode::Noinstall => steps![
+                step_check_rustc_version,
                step_check_crate_config,
                step_build_wasm,
                step_create_dir,
@ -176,6 +178,14 @@ impl Build {
        }
    }

+    fn step_check_rustc_version(&mut self, step: &Step, log: &Logger) -> Result<(), Error> {
+        info!(&log, "Checking rustc version...");
+        let version = build::check_rustc_version(step)?;
+        let msg = format!("rustc version is {}.", version);
+        info!(&log, "{}", &msg);
+        Ok(())
+    }
+
    fn step_check_crate_config(&mut self, step: &Step, log: &Logger) -> Result<(), Error> {
        info!(&log, "Checking crate configuration...");
        manifest::check_crate_config(&self.crate_path, step)?;
--- a/src/emoji.rs
+++ b/src/emoji.rs
@ -26,3 +26,4 @@ pub static DANCERS: Emoji = Emoji("👯  ", "");
 pub static ERROR: Emoji = Emoji("⛔  ", "");
 pub static INFO: Emoji = Emoji("ℹ️  ", "");
 pub static WRENCH: Emoji = Emoji("🔧  ", "");
+pub static CRAB: Emoji = Emoji("🦀  ", "");
--- a/src/error.rs
+++ b/src/error.rs
@ -29,6 +29,22 @@ pub enum Error {
    /// An error handling zip archives.
    Zip(#[cause] zip::result::ZipError),

+    #[fail(display = "{}", _0)]
+    /// An error in parsing your rustc version.
+    RustcMissing {
+        /// Error message
+        message: String,
+    },
+
+    #[fail(display = "{}", _0)]
+    /// An error from having an unsupported rustc version.
+    RustcVersion {
+        /// Error message
+        message: String,
+        /// The minor version of the local rust
+        local_minor_version: String,
+    },
+
    /// An error invoking another CLI tool.
    #[fail(display = "{}. stderr:\n\n{}", message, stderr)]
    Cli {
@ -112,6 +128,14 @@ impl Error {
        }
    }

+    /// Construct a rustc version error.
+    pub fn rustc_version_error(message: &str, local_version: &str) -> Self {
+        Error::RustcVersion {
+            message: message.to_string(),
+            local_minor_version: local_version.to_string(),
+        }
+    }
+
    /// Get a string description of this error's type.
    pub fn error_type(&self) -> String {
        match self {
@ -119,6 +143,13 @@ impl Error {
            Error::SerdeJson(_) => "There was an JSON error. Details:\n\n",
            Error::SerdeToml(_) => "There was an TOML error. Details:\n\n",
            Error::Zip(_) => "There was an error handling zip files. Details:\n\n",
+            Error::RustcMissing {
+              message: _,
+            } =>  "We can't figure out what your Rust version is- which means you might not have Rust installed. Please install Rust version 1.30.0 or higher.",
+            Error::RustcVersion {
+              message: _,
+              local_minor_version: _,
+            } => "Your rustc version is not supported. Please install version 1.30.0 or higher.",
            Error::Cli {
                message: _,
                stderr: _,