Build example/test FFI integration test via a Cargo integration test.

.travis.yml

@@ -17,7 +17,6 @@ env:
 script:
   - (cd mp4parse && cargo test --verbose)
   - (cd mp4parse_capi && cargo test --verbose)
-  - make -C mp4parse_capi/examples check
   - (cd mp4parse_capi && cargo doc)
 
 deploy:

mp4parse_capi/tests/build_ffi_test.rs

@@ -0,0 +1,19 @@
+#[cfg(not(windows))]
+#[test]
+fn build_ffi_test() {
+    use std::process::Command;
+
+    let output = Command::new("make")
+        .arg("-C")
+        .arg("examples")
+        .arg("check")
+        .output()
+        .expect("failed to execute process");
+
+    println!("status: {}", output.status);
+    println!("--- stdout ---");
+    println!("{}", String::from_utf8_lossy(&output.stdout));
+    println!("-- stderr ---");
+    println!("{}", String::from_utf8_lossy(&output.stderr));
+    assert!(output.status.success());
+}