Add SPDX License identifiers to source files rust-embedded#101

Author: kaidokert

build.rs

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT OR Apache-2.0
+
 //! This build script copies the `memory.x` file from the crate root into
 //! a directory where the linker can always find it at build time.
 //! For many projects this is optional, as the linker always searches the

examples/allocator.rs

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT OR Apache-2.0
+
 //! How to use the heap and a dynamic memory allocator
 //!
 //! This example depends on the alloc-cortex-m crate so you'll have to add it to your Cargo.toml:

examples/crash.rs

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT OR Apache-2.0
+
 //! Debugging a crash (exception)
 //!
 //! Most crash conditions trigger a hard fault exception, whose handler is defined via

examples/device.rs

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT OR Apache-2.0
+
 //! Using a device crate
 //!
 //! Crates generated using [`svd2rust`] are referred to as device crates. These crates provide an

examples/exception.rs

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT OR Apache-2.0
+
 //! Overriding an exception handler
 //!
 //! You can override an exception handler using the [`#[exception]`][1] attribute.

examples/hello.rs

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT OR Apache-2.0
+
 //! Prints "Hello, world!" on the host console using semihosting
 
 #![no_main]

examples/itm.rs

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT OR Apache-2.0
+
 //! Sends "Hello, world!" through the ITM port 0
 //!
 //! ITM is much faster than semihosting. Like 4 orders of magnitude or so.

examples/panic.rs

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT OR Apache-2.0
+
 //! Changing the panicking behavior
 //!
 //! The easiest way to change the panicking behavior is to use a different [panic handler crate][0].

examples/test_on_host.rs

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT OR Apache-2.0
+
 //! Conditionally compiling tests with std and our executable with no_std.
 //!
 //! Rust's built in unit testing framework requires the standard library,

src/main.rs

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT OR Apache-2.0
+
 #![no_std]
 #![no_main]