Keep trying to add the possibility to build MEOS from scratch

.gitmodules

@@ -1,3 +1,3 @@
-[submodule "sys/MobilityDB"]
-	path = sys/MobilityDB
+[submodule "sys/meos-src/source"]
+	path = sys/meos-src/source
 	url = https://github.com/MobilityDB/MobilityDB.git

Cargo.toml

@@ -13,14 +13,15 @@ edition = "2021"
 
 [dependencies]
 paste = "1.0.15"
-meos-sys = { path = "sys", version = "0.1.5" }
+meos-sys = { path = "sys", version = "0.1.5", features=["bundled_proj"] }
 chrono = "0.4.38"
 libc = "0.2.155"
 bitmask-enum = "2.2.4"
 geos = { version = "9.0.0", optional = true }
 
 [features]
 default = ["geos"]
+geos = ["dep:geos"]
 
 [dev-dependencies]
 csv = "1.3.0"

sys/Cargo.toml

@@ -14,6 +14,7 @@ edition = "2021"
 links = "meos"
 
 [dependencies]
+meos-src = { path = "./meos-src", version = "0.1.3", optional = true }
 
 [build-dependencies]
 pkg-config = "0.3.30"
@@ -24,5 +25,6 @@ bindgen = { version = "0.70.1", optional = true}
 default = ["v1_2"]
 v1_1 = []
 v1_2 = []
-buildtime_bindgen = ["dep:bindgen"]
+
+buildtime_bindgen = ["dep:bindgen", "meos-src"]
 bundled_proj = ["buildtime_bindgen"]

sys/build.rs

@@ -18,17 +18,14 @@ fn main() {
 
     // If `bundled_proj` is on, use the git submodule to build MEOS from scratch
     let include_path = if cfg!(feature = "bundled_proj") {
-        let dst = cmake::Config::new("MobilityDB").define("MEOS", "1").build();
+        let meos_path = std::env::var("DEP_MEOSSRC_SEARCH").unwrap();
 
-        println!(
-            "cargo:rustc-link-search=dylib={}",
-            dst.join("lib").display()
-        );
+        println!("cargo:rustc-link-search=dylib={}", meos_path);
 
         // Tell cargo to tell rustc to link the system meos shared library.
         println!("cargo:rustc-link-lib=meos");
 
-        dst.join("lib")
+        meos_path
     // Else use pkg-config, using a default as a fallback
     } else {
         let pk_include_path = detect_meos_via_pkg_config();
@@ -48,14 +45,14 @@ fn main() {
 
             // Tell cargo to tell rustc to link the system meos shared library.
             println!("cargo:rustc-link-lib=dylib=meos");
-            PathBuf::from(default_include_path)
+            default_include_path
         } else {
-            pk_include_path.unwrap()
+            pk_include_path.unwrap().display().to_string()
         }
     };
 
     #[cfg(feature = "buildtime_bindgen")]
-    generate_bindings(include_path).unwrap();
+    generate_bindings(include_path.into()).unwrap();
 
     #[cfg(not(feature = "buildtime_bindgen"))]
     let _ = include_path;

sys/meos-src/Cargo.toml

@@ -0,0 +1,14 @@
+[package]
+name = "meos-src"
+version = "0.1.3"
+edition = "2021"
+links = "meossrc"
+build = "build.rs"
+description = "static library build for meos-sys"
+repository = "https://github.com/MobilityDB/RustMEOS"
+authors = ["David García Morillo <[email protected]>"]
+license-file = "LICENSE"
+exclude = ["source/tests"]
+
+[build-dependencies]
+cmake = "0.1"

sys/meos-src/build.rs

@@ -0,0 +1,11 @@
+fn main() {
+    println!("cargo:rerun-if-changed=build.rs");
+
+    let libmeos = cmake::Config::new("source").define("MEOS", "1").build();
+
+    println!("cargo:lib=meos");
+
+    let search_path = format!("{}/lib", libmeos.display());
+    assert!(std::path::Path::new(&search_path).exists());
+    println!("cargo:search={}", search_path);
+}

sys/meos-src/src/lib.rs

@@ -0,0 +1 @@
+