Add a library target

Cargo.toml

@@ -11,6 +11,10 @@ readme = "README.md"
 categories = ["command-line-utilities"]
 rust-version = "1.85"
 
+[lib]
+name = "decomp_toolkit"
+path = "src/lib.rs"
+
 [[bin]]
 name = "dtk"
 path = "src/main.rs"

src/cmd/dol.rs

@@ -869,11 +869,11 @@ fn resolve_external_relocations(
     Ok(())
 }
 
-struct AnalyzeResult {
-    obj: ObjInfo,
-    dep: Vec<Utf8NativePathBuf>,
-    symbols_cache: Option<FileReadInfo>,
-    splits_cache: Option<FileReadInfo>,
+pub struct AnalyzeResult {
+    pub obj: ObjInfo,
+    pub dep: Vec<Utf8NativePathBuf>,
+    pub symbols_cache: Option<FileReadInfo>,
+    pub splits_cache: Option<FileReadInfo>,
 }
 
 fn load_dol_module(
@@ -897,7 +897,7 @@ fn load_dol_module(
     Ok((obj, object_path))
 }
 
-fn load_analyze_dol(config: &ProjectConfig, object_base: &ObjectBase) -> Result<AnalyzeResult> {
+pub fn load_analyze_dol(config: &ProjectConfig, object_base: &ObjectBase) -> Result<AnalyzeResult> {
     let (mut obj, object_path) = load_dol_module(&config.base, object_base)?;
     let mut dep = vec![object_path];
 

src/lib.rs

@@ -0,0 +1,22 @@
+#![deny(unused_crate_dependencies)]
+//! decomp-toolkit as a library.
+//!
+//! The `dtk` binary in `main.rs` is the primary consumer, and these modules are
+//! arranged for it rather than as a curated public API.
+//!
+//! Nothing here is covered by a stability promise: it moves with `dtk`.
+
+pub mod analysis;
+pub mod argp_version;
+pub mod cmd;
+pub mod obj;
+pub mod util;
+pub mod vfs;
+
+// Dependencies of the `dtk` binary alone. `unused_crate_dependencies` is
+// checked per target, so without these the library target reports them unused.
+use enable_ansi_support as _;
+#[cfg(target_env = "musl")]
+use mimalloc as _;
+use supports_color as _;
+use tracing_subscriber as _;

src/main.rs

@@ -1,20 +1,13 @@
-#![deny(unused_crate_dependencies)]
 use std::{env, ffi::OsStr, fmt::Display, path::PathBuf, process::exit, str::FromStr};
 
 use anyhow::Error;
 use argp::{FromArgValue, FromArgs};
+use decomp_toolkit::{argp_version, cmd};
 use enable_ansi_support::enable_ansi_support;
 use supports_color::Stream;
 use tracing::level_filters::LevelFilter;
 use tracing_subscriber::EnvFilter;
 
-pub mod analysis;
-pub mod argp_version;
-pub mod cmd;
-pub mod obj;
-pub mod util;
-pub mod vfs;
-
 // musl's allocator is very slow, so use mimalloc when targeting musl.
 // Otherwise, use the system allocator to avoid extra code size.
 #[cfg(target_env = "musl")]