Patch mspec sources in build.rs

spec-runner/build.rs

@@ -0,0 +1,58 @@
+use fs_extra::dir::{self, CopyOptions};
+use std::env;
+use std::path::PathBuf;
+use std::process::Command;
+
+/// vendored mruby version
+const MRUBY_REVISION: &str = "1685c45";
+
+/// Path helpers
+struct Build;
+
+impl Build {
+    fn root() -> String {
+        env::var("CARGO_MANIFEST_DIR").unwrap()
+    }
+
+    fn mspec_vendored_dir() -> String {
+        format!("{}/spec/mspec", &Build::root(),)
+    }
+
+    fn mspec_source_dir() -> String {
+        format!("{}/mspec", env::var("OUT_DIR").unwrap())
+    }
+
+    fn patch(patch: &str) -> String {
+        format!("{}/spec/{}", Build::root(), patch)
+    }
+}
+
+fn main() {
+    let opts = CopyOptions::new();
+    let _ = dir::remove(Build::mspec_source_dir());
+    dir::copy(
+        Build::mspec_vendored_dir(),
+        env::var("OUT_DIR").unwrap(),
+        &opts,
+    )
+    .unwrap();
+    for patch in vec![
+        "0001-Add-mruby-engine-detection-to-mspec-platform-guard.patch",
+        "0002-Add-fallback-for-Fixnum-size.patch",
+        "0003-Short-circuit-in-mspec-helpers-tmp.patch",
+        "0004-Call-Kernel-require-instead-of-Kernel-load.patch",
+        "0005-Remove-reference-to-SystemExit.patch",
+        "0006-Use-explicit-call-to-to_int.patch",
+    ] {
+        if !Command::new("bash")
+            .arg("-c")
+            .arg(format!("patch -p1 < '{}'", Build::patch(patch)))
+            .current_dir(Build::mspec_source_dir())
+            .status()
+            .unwrap()
+            .success()
+        {
+            panic!("Failed to patch mspec sources with {}", patch);
+        }
+    }
+}