Add version constants to public header

2 files changed, 51 insertions, 0 deletions

diff --git a/include/serd/serd.h b/include/serd/serd.h
index bf02bc96..70168997 100644
--- a/include/serd/serd.h
+++ b/include/serd/serd.h
@@ -19,6 +19,7 @@
 */
 
 #include "serd/attributes.h"
+#include "serd/version.h"
 
 /**
    @}
diff --git a/include/serd/version.h b/include/serd/version.h
new file mode 100644
index 00000000..254e79c8
--- /dev/null
+++ b/include/serd/version.h
@@ -0,0 +1,50 @@
+// Copyright 2011-2022 David Robillard <d@drobilla.net>
+// SPDX-License-Identifier: ISC
+
+#ifndef SERD_VERSION_H
+#define SERD_VERSION_H
+
+#include "serd/attributes.h"
+
+SERD_BEGIN_DECLS
+
+/**
+   @defgroup serd_version Version
+   @ingroup serd_library
+
+   Serd uses a single [semantic version number](https://semver.org) which
+   reflects changes to the C library ABI.
+
+   @{
+*/
+
+/**
+   The major version number of the serd library.
+
+   Semver: Increments when incompatible API changes are made.
+*/
+#define SERD_MAJOR_VERSION 1
+
+/**
+   The minor version number of the serd library.
+
+   Semver: Increments when functionality is added in a backwards compatible
+   manner.
+*/
+#define SERD_MINOR_VERSION 1
+
+/**
+   The micro version number of the serd library.
+
+   Semver: Increments when changes are made that do not affect the API, such as
+   performance improvements or bug fixes.
+*/
+#define SERD_MICRO_VERSION 1
+
+/**
+   @}
+*/
+
+SERD_END_DECLS
+
+#endif // SERD_VERSION_H