feat: enable bundled build

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "mt-kahypar"]
+	path = mt-kahypar
+	url = https://github.com/kahypar/mt-kahypar.git

Cargo.toml

@@ -10,3 +10,13 @@ authors = ["Jan Baudisch <[email protected]>"]
 readme = "README.md"
 homepage = "https://github.com/SoftVarE-Group/mt-kahypar-sys"
 repository = "https://github.com/SoftVarE-Group/mt-kahypar-sys.git"
+
+[features]
+bundled = ["dep:cmake", "dep:tbb-sys", "dep:hwlocality-sys"]
+
+[dependencies]
+tbb-sys = { version = "1.1", optional = true }
+hwlocality-sys = { version = "0.2", optional = true }
+
+[build-dependencies]
+cmake = { version = "0.1", optional = true }

build.rs

@@ -3,7 +3,34 @@ use std::path::PathBuf;
 
 fn main() {
     let link_type;
+    #[cfg(feature = "bundled")]
+    {
+        panic!("Bundling is currently not supported, as Mt-KaHyPar can not be built statically.");
+
+        link_type = "static";
+
+        // When bundling mt-kahypar, build it with CMake ...
+        let build_dir = cmake::Config::new("mt-kahypar")
+            .define("BUILD_SHARED_LIBS", "OFF")
+            .build_target("install.mtkahypar")
+            .build();
+
+        // ... and set the path to the built library to be linked (statically).
+        println!(
+            "cargo:rustc-link-search={}",
+            build_dir.join("lib64").display()
+        );
+
+        println!(
+            "cargo:rustc-link-search={}",
+            build_dir.join("lib").display()
+        );
+
+        // Set include path for other libraries depending on mt-kahypar.
+        println!("cargo:include-dir={}", build_dir.join("include").display());
+    }
 
+    #[cfg(not(feature = "bundled"))]
     {
         link_type = "dylib";