Add Xargo-specific sub project (johnthagen#1)

Author: johnthagen

.travis.yml

@@ -2,17 +2,29 @@ language: rust
 
 matrix:
   include:
+    - os: linux
+      rust: 1.28.0
     - os: linux
       rust: stable
     - os: osx
       rust: stable
     - os: windows
       rust: stable
+    - os: linux
+      rust: nightly-2018-10-31
+      env: CI_BUILD_TYPE="XARGO"
 
 cache: cargo
 
 script:
-  - cargo build --verbose --all
+  - bash -c 'if [[ "$CI_BUILD_TYPE" == "XARGO" ]]; then
+      cd xargo;
+      rustup component add rust-src;
+      cargo install xargo;
+      xargo build --target x86_64-unknown-linux-gnu --release --verbose;
+    else
+      cargo build --release --verbose --all;
+    fi'
 
 notifications:
   email: false

Cargo.toml

@@ -2,7 +2,6 @@
 name = "min-sized-rust"
 version = "0.1.0"
 authors = ["johnthagen <johnthagen@gmail.com>"]
-edition = "2015"
 
 [dependencies]
 

README.md

@@ -117,6 +117,8 @@ panic = 'abort'
 > **Note**: Sometime in early November, 2018 `nightly` broke the way Xargo is used in this example,
 so the nightly has been pinned.
 
+Example project is located in the [xargo](xargo) folder.
+
 Rust ships pre-built copies of the standard library (`std`) with its toolchains. This means
 that developers don't need to build `std` every time they build their applications. `std`
 is statically linked into the binary instead.

xargo/Cargo.lock

@@ -0,0 +1,12 @@
+[package]
+name = "min-sized-rust-xargo"
+version = "0.1.0"
+authors = ["johnthagen <johnthagen@gmail.com>"]
+edition = "2015"
+
+[dependencies]
+
+[profile.release]
+opt-level = 'z'  # Optimize for size.
+lto = true       # Enable Link Time Optimization
+panic = 'abort'  # Abort on panic

xargo/Cargo.toml

@@ -0,0 +1,3 @@
+fn main() {
+    println!("Hello, world!");
+}