Add release-fast and release-small targets to Cargo.toml

Author: tertsdiepraam

Cargo.toml

@@ -512,3 +512,22 @@ path = "src/bin/coreutils.rs"
 name = "uudoc"
 path = "src/bin/uudoc.rs"
 required-features = ["uudoc"]
+
+# The default release profile. It contains all optimizations, without
+# sacrificing debug info. With this profile (like in the standard
+# release profile), the debug info and the stack traces will still be available.
+[profile.release]
+lto = true
+
+# A release-like profile that is tuned to be fast, even when being fast
+# compromises on binary size. This includes aborting on panic.
+[profile.release-fast]
+inherits = "release"
+panic = "abort"
+
+# A release-like profile that is as small as possible.
+[profile.release-small]
+inherits = "release"
+opt-level = "z"
+panic = "abort"
+strip = true

src/uu/stdbuf/build.rs

@@ -23,19 +23,29 @@ fn main() {
     let out_dir = env::var("OUT_DIR").unwrap();
     let mut target_dir = Path::new(&out_dir);
 
-    // Depending on how this is util is built, the directory structure. This seems to work for now.
-    // Here are three cases to test when changing this:
+    // Depending on how this is util is built, the directory structure changes.
+    // This seems to work for now. Here are three cases to test when changing
+    // this:
+    //
     // - cargo run
     // - cross run
     // - cargo install --git
     // - cargo publish --dry-run
+    //
+    // The goal is to find the directory in which we are installing, but that
+    // depends on the build method, which is annoying. Additionally the env
+    // var for the profile can only be "debug" or "release", not a custom
+    // profile name, so we have to use the name of the directory within target
+    // as the profile name.
     let mut name = target_dir.file_name().unwrap().to_string_lossy();
+    let mut profile_name = name.clone();
     while name != "target" && !name.starts_with("cargo-install") {
         target_dir = target_dir.parent().unwrap();
+        profile_name = name.clone();
         name = target_dir.file_name().unwrap().to_string_lossy();
     }
     let mut dir = target_dir.to_path_buf();
-    dir.push(env::var("PROFILE").unwrap());
+    dir.push(profile_name.as_ref());
     dir.push("deps");
     let mut path = None;