Add a crate to test gcc

.travis.yml

@@ -7,6 +7,7 @@ sudo: false
 script:
   - cargo build --verbose
   - cargo test --verbose
+  - cargo test --manifest-path gcc-test/Cargo.toml
   - cargo doc
   - rustdoc --test README.md -L target/debug
 after_success: |

gcc-test/Cargo.lock

@@ -0,0 +1,11 @@
+[root]
+name = "gcc-test"
+version = "0.1.0"
+dependencies = [
+ "gcc 0.3.8",
+]
+
+[[package]]
+name = "gcc"
+version = "0.3.8"
+

gcc-test/Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "gcc-test"
+version = "0.1.0"
+authors = ["Alex Crichton <alex@alexcrichton.com>"]
+build = "build.rs"
+
+[lib]
+name = "gcc-test"
+doctest = false
+
+[build-dependencies]
+gcc = { path = ".." }

gcc-test/build.rs

@@ -0,0 +1,17 @@
+extern crate gcc;
+
+fn main() {
+    gcc::Config::new()
+                .file("src/foo.c")
+                .compile("libfoo.a");
+
+    gcc::Config::new()
+                .file("src/bar1.c")
+                .file("src/bar2.c")
+                .compile("libbar.a");
+
+    gcc::Config::new()
+                .file("src/bar1.c")
+                .file("src/bar2.c")
+                .compile("libbar.a");
+}

gcc-test/src/bar1.c

@@ -0,0 +1,6 @@
+#include <stdint.h>
+
+int32_t bar1() {
+  return 5;
+}
+

gcc-test/src/bar2.c

@@ -0,0 +1,6 @@
+#include <stdint.h>
+
+int32_t bar2() {
+  return 6;
+}
+

gcc-test/src/foo.c

@@ -0,0 +1,5 @@
+#include <stdint.h>
+
+int32_t foo() {
+  return 4;
+}

gcc-test/src/lib.rs

@@ -0,0 +1,23 @@
+extern {
+    pub fn foo() -> i32;
+}
+
+extern {
+    pub fn bar1() -> i32;
+    pub fn bar2() -> i32;
+}
+
+#[test]
+fn foo_here() {
+    unsafe {
+        assert_eq!(foo(), 4);
+    }
+}
+
+#[test]
+fn bar_here() {
+    unsafe {
+        assert_eq!(bar1(), 5);
+        assert_eq!(bar2(), 6);
+    }
+}