Generate and install a version header alongside manifold headers.

CMakeLists.txt

@@ -421,6 +421,15 @@ install(
   DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/manifold
 )
 
+configure_file(version.h.in
+  ${CMAKE_CURRENT_BINARY_DIR}/include/manifold/version.h @ONLY)
+set_source_files_properties(include/manifold/version.h
+  PROPERTIES GENERATED TRUE)
+install(
+  FILES ${CMAKE_CURRENT_BINARY_DIR}/include/manifold/version.h
+  DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/manifold
+)
+
 # PkgConfig file
 if(MANIFOLD_CROSS_SECTION)
   set(TEMPLATE_OPTIONAL_CLIPPER "Clipper2")

version.h.in

@@ -0,0 +1,23 @@
+// Copyright 2024 The Manifold Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#pragma once
+#ifndef MANIFOLD_VERSION_H_
+#define MANIFOLD_VERSION_H_
+
+#define MANIFOLD_VERSION_MAJOR @MANIFOLD_VERSION_MAJOR@
+#define MANIFOLD_VERSION_MINOR @MANIFOLD_VERSION_MINOR@
+#define MANIFOLD_VERSION_PATH @MANIFOLD_VERSION_PATCH@
+
+#endif  // MANIFOLD_VERSION_H_