Include all the SDK static archives directly

This avoids all sorts of complex linking activity downstream

Cargo.toml

@@ -6,9 +6,11 @@ edition = "2018"
 links = "sdk"
 
 [dependencies]
+freertos_rs = { git = "https://github.com/hashmismatch/freertos.rs", rev = "a5b296a64d48db97c711673a825f6a0e5b9d9188" }
 cty = "0.2"
 
 [build-dependencies]
 cc = { version = "1.0", features = ["parallel"] }
 bindgen = "0.49.0"
 llvm-tools = "0.1.1"
+glob = "0.3.0"

build.rs

@@ -1,13 +1,16 @@
 extern crate bindgen;
 extern crate cc;
+extern crate glob;
 extern crate llvm_tools;
 
+use glob::glob;
+use llvm_tools::LlvmTools;
 use std::env;
+use std::fmt;
+use std::fs;
 use std::path::PathBuf;
 use std::process::Command;
 
-use llvm_tools::LlvmTools;
-
 const STDLIB_INCLUDE_PATHS: &[&'static str] = &[
     "/usr/lib/gcc/arm-none-eabi/5.4.1/include",
     "/usr/lib/gcc/arm-none-eabi/5.4.1/include-fixed",
@@ -239,8 +242,21 @@ const SDK_C_FILES: &[&'static str] = &[
     "vendor/sdk/component/common/utilities/xml.c",
 ];
 
+const SDK_STATIC_LIBS: &[&'static str] = &[
+    "platform",
+    "wlan",
+    "http",
+    "dct",
+    "wps",
+    "rtlstd",
+    "websocket",
+    "xmodem",
+    "mdns"
+];
+
 fn main() {
     let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
+    let sdk_staticlib_path = PathBuf::from("vendor/sdk/component/soc/realtek/8195a/misc/bsp/lib/common/GCC").canonicalize().unwrap();
 
     let tools = LlvmTools::new().unwrap();
     let objcopy = match tools.tool("llvm-objcopy") {
@@ -248,6 +264,23 @@ fn main() {
         None => panic!("Couldn't find objcopy"),
     };
 
+    for lib_name in SDK_STATIC_LIBS.iter() {
+        fs::create_dir_all(out_path.join("static").join(lib_name)).expect("Could not create directory");
+
+        Command::new("ar")
+            .arg("x")
+            .arg(sdk_staticlib_path.join(format!("lib_{}.a", lib_name)).to_str().unwrap())
+            .current_dir(out_path.join("static").join(lib_name))
+            .status().unwrap();
+    }
+
+    let sdk_static_lib_object_paths = glob(out_path.join("static/**/*.o").to_str().unwrap()).unwrap().into_iter().filter_map(|entry| {
+        match entry {
+            Ok(path) => Some(path),
+            Err(_) => None,
+        }
+    }).collect::<Vec<_>>();
+
     Command::new(objcopy)
         .args(&["--rename-section", ".data=.loader.data,contents,alloc,load,readonly,data"])
         .args(&["-I", "binary"])
@@ -287,23 +320,17 @@ fn main() {
         compiler.include(path);
     }
 
+    for path in sdk_static_lib_object_paths {
+        compiler.object(path);
+    }
+
     compiler
         .object(out_path.join("ram_1.r.o"))
+        .object("vendor/sdk/component/soc/realtek/8195a/misc/bsp/lib/common/GCC/lib_wlan.a")
         .files(SDK_C_FILES)
         .file("src/freertos_rs.c")
         .compile("sdk");
 
-    println!("cargo:rustc-link-search=native=vendor/sdk/component/soc/realtek/8195a/misc/bsp/lib/common/GCC/");
-    println!("cargo:rustc-link-lib=_platform");
-    println!("cargo:rustc-link-lib=_wlan");
-    println!("cargo:rustc-link-lib=_http");
-    println!("cargo:rustc-link-lib=_dct");
-    println!("cargo:rustc-link-lib=_wps");
-    println!("cargo:rustc-link-lib=_rtlstd");
-    println!("cargo:rustc-link-lib=_websocket");
-    println!("cargo:rustc-link-lib=_xmodem");
-    println!("cargo:rustc-link-lib=_mdns");
-
     let bindings = bindgen::Builder::default()
         .header("include/wrapper.h")
         .whitelist_function("wifi_manager_init")