Add libcoupemetis.so

[hhirtz]

coupe-metis is an implementation of MeTiS using coupe's algorithms.

TODO

• Compilation flag/feature to choose between i32/f32 and i64/f64
• Makefile
• use vsize when adjwgt is null?
• print errors to stderr instead of stdout, to avoid breaking mesh-part at least

[hhirtz]

Patchs pour utiliser coupe-metis avec metis-rs et ainsi appeller coupe via coupe-metis via metis-rs :

metis-rs :

diff --git a/Cargo.toml b/Cargo.toml
index 3a4bf34..b16a258 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,4 +16,4 @@ keywords = ["graph", "mesh", "matrix", "partitioning", "ordering"]
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

 [dependencies]
-metis-sys = "0.1"
+metis-sys = { version = "0.1", path = "metis-sys" }
diff --git a/metis-sys/build.rs b/metis-sys/build.rs
index 9491683..38fe3be 100644
--- a/metis-sys/build.rs
+++ b/metis-sys/build.rs
@@ -3,7 +3,7 @@ use std::path::PathBuf;
 use std::process;

 fn main() {
-    println!("cargo:rustc-link-lib=metis");
+    println!("cargo:rustc-link-lib=coupemetis");
     println!("cargo:rerun-if-changed=wrapper.h");

     let bindings = bindgen::builder()

coupe :

diff --git a/tools/Cargo.toml b/tools/Cargo.toml
index caa2374..01a586b 100644
--- a/tools/Cargo.toml
+++ b/tools/Cargo.toml
@@ -14,7 +14,7 @@ default = ["scotch", "metis"]
 # Partitioners
 coupe = { version = "0.1", path = ".." }
 scotch = { version = "0.1", optional = true }
-metis = { version = "0.1", optional = true }
+metis = { version = "0.1", optional = true, path = "../../metis-rs" }

 # Random number generation
 rand = { version = "0.8", default-features = false, features = ["std"] }