Switch to using cargo for Rust build

Author: vshymanskyy

wasm_apps/rust/.cargo/config

@@ -0,0 +1,5 @@
+[build]
+target = "wasm32-unknown-unknown"
+rustflags = [
+  "-C", "link-args=-zstack-size=2048 -s",
+]

wasm_apps/rust/Cargo.toml

@@ -0,0 +1,21 @@
+[package]
+name = "app"
+version = "0.1.0"
+authors = ["Volodymyr Shymanskyy <vshymanskyi@gmail.com>"]
+edition = "2018"
+
+[lib]
+path = "src/app.rs"
+crate-type = ["cdylib"]
+
+[dependencies]
+
+[profile.dev]
+panic = "abort"
+
+[profile.release]
+panic = "abort"
+opt-level = "s"
+codegen-units = 1
+lto = true
+#debug = true

wasm_apps/rust/app.wasm

@@ -2,21 +2,21 @@ unsigned char app_wasm[] = {
   0x00, 0x61, 0x73, 0x6d, 0x01, 0x00, 0x00, 0x00, 0x01, 0x11, 0x04, 0x60,
   0x02, 0x7f, 0x7f, 0x00, 0x60, 0x00, 0x00, 0x60, 0x01, 0x7f, 0x00, 0x60,
   0x00, 0x01, 0x7f, 0x02, 0x4e, 0x04, 0x07, 0x61, 0x72, 0x64, 0x75, 0x69,
-  0x6e, 0x6f, 0x05, 0x64, 0x65, 0x6c, 0x61, 0x79, 0x00, 0x02, 0x07, 0x61,
-  0x72, 0x64, 0x75, 0x69, 0x6e, 0x6f, 0x07, 0x70, 0x69, 0x6e, 0x4d, 0x6f,
-  0x64, 0x65, 0x00, 0x00, 0x07, 0x61, 0x72, 0x64, 0x75, 0x69, 0x6e, 0x6f,
-  0x0c, 0x64, 0x69, 0x67, 0x69, 0x74, 0x61, 0x6c, 0x57, 0x72, 0x69, 0x74,
-  0x65, 0x00, 0x00, 0x07, 0x61, 0x72, 0x64, 0x75, 0x69, 0x6e, 0x6f, 0x09,
-  0x67, 0x65, 0x74, 0x50, 0x69, 0x6e, 0x4c, 0x45, 0x44, 0x00, 0x03, 0x03,
+  0x6e, 0x6f, 0x09, 0x67, 0x65, 0x74, 0x50, 0x69, 0x6e, 0x4c, 0x45, 0x44,
+  0x00, 0x03, 0x07, 0x61, 0x72, 0x64, 0x75, 0x69, 0x6e, 0x6f, 0x07, 0x70,
+  0x69, 0x6e, 0x4d, 0x6f, 0x64, 0x65, 0x00, 0x00, 0x07, 0x61, 0x72, 0x64,
+  0x75, 0x69, 0x6e, 0x6f, 0x0c, 0x64, 0x69, 0x67, 0x69, 0x74, 0x61, 0x6c,
+  0x57, 0x72, 0x69, 0x74, 0x65, 0x00, 0x00, 0x07, 0x61, 0x72, 0x64, 0x75,
+  0x69, 0x6e, 0x6f, 0x05, 0x64, 0x65, 0x6c, 0x61, 0x79, 0x00, 0x02, 0x03,
   0x02, 0x01, 0x01, 0x05, 0x03, 0x01, 0x00, 0x01, 0x06, 0x0d, 0x02, 0x7f,
   0x00, 0x41, 0x80, 0x10, 0x0b, 0x7f, 0x00, 0x41, 0x80, 0x10, 0x0b, 0x07,
   0x2e, 0x04, 0x06, 0x6d, 0x65, 0x6d, 0x6f, 0x72, 0x79, 0x02, 0x00, 0x0a,
   0x5f, 0x5f, 0x64, 0x61, 0x74, 0x61, 0x5f, 0x65, 0x6e, 0x64, 0x03, 0x00,
   0x0b, 0x5f, 0x5f, 0x68, 0x65, 0x61, 0x70, 0x5f, 0x62, 0x61, 0x73, 0x65,
   0x03, 0x01, 0x06, 0x5f, 0x73, 0x74, 0x61, 0x72, 0x74, 0x00, 0x04, 0x0a,
-  0x2a, 0x01, 0x28, 0x01, 0x01, 0x7f, 0x10, 0x03, 0x22, 0x00, 0x41, 0x01,
+  0x2a, 0x01, 0x28, 0x01, 0x01, 0x7f, 0x10, 0x00, 0x22, 0x00, 0x41, 0x01,
   0x10, 0x01, 0x03, 0x40, 0x20, 0x00, 0x41, 0x01, 0x10, 0x02, 0x41, 0xe4,
-  0x00, 0x10, 0x00, 0x20, 0x00, 0x41, 0x00, 0x10, 0x02, 0x41, 0x84, 0x07,
-  0x10, 0x00, 0x0c, 0x00, 0x0b, 0x00, 0x0b
+  0x00, 0x10, 0x03, 0x20, 0x00, 0x41, 0x00, 0x10, 0x02, 0x41, 0x84, 0x07,
+  0x10, 0x03, 0x0c, 0x00, 0x0b, 0x00, 0x0b
 };
 unsigned int app_wasm_len = 223;

wasm_apps/rust/app.wasm.h

@@ -1,9 +1,6 @@
 # Compile
-rustc -O --crate-type=cdylib              \
-      --target=wasm32-unknown-unknown     \
-      -C link-arg=-zstack-size=2048       \
-      -C link-arg=-s                      \
-      -o app.wasm app.rs
+cargo build --release
+cp ./target/wasm32-unknown-unknown/release/app.wasm ./
 
 # Optimize (optional)
 wasm-opt -O3 app.wasm -o app.wasm