Merge commit '26c8cc348eacea01237cd64e1a68d0df8141e848'

deps/glfw/docs/CMakeLists.txt

@@ -1,34 +1,57 @@
 
 # NOTE: The order of this list determines the order of items in the Guides
 #       (i.e. Pages) list in the generated documentation
-set(GLFW_DOXYGEN_SOURCES
-    "include/GLFW/glfw3.h"
-    "include/GLFW/glfw3native.h"
-    "docs/main.dox"
-    "docs/news.dox"
-    "docs/quick.dox"
-    "docs/moving.dox"
-    "docs/compile.dox"
-    "docs/build.dox"
-    "docs/intro.dox"
-    "docs/context.dox"
-    "docs/monitor.dox"
-    "docs/window.dox"
-    "docs/input.dox"
-    "docs/vulkan.dox"
-    "docs/compat.dox"
-    "docs/internal.dox")
+set(source_files
+    main.md
+    news.md
+    quick.md
+    moving.md
+    compile.md
+    build.md
+    intro.md
+    context.md
+    monitor.md
+    window.md
+    input.md
+    vulkan.md
+    compat.md
+    internal.md)
+
+set(extra_files DoxygenLayout.xml header.html footer.html extra.css spaces.svg)
+
+set(header_paths
+    "${GLFW_SOURCE_DIR}/include/GLFW/glfw3.h"
+    "${GLFW_SOURCE_DIR}/include/GLFW/glfw3native.h")
 
 # Format the source list into a Doxyfile INPUT value that Doxygen can parse
-foreach(path IN LISTS GLFW_DOXYGEN_SOURCES)
-    set(GLFW_DOXYGEN_INPUT "${GLFW_DOXYGEN_INPUT} \\\n\"${GLFW_SOURCE_DIR}/${path}\"")
+foreach(path IN LISTS header_paths)
+    string(APPEND GLFW_DOXYGEN_INPUT " \\\n\"${path}\"")
+endforeach()
+foreach(file IN LISTS source_files)
+    string(APPEND GLFW_DOXYGEN_INPUT " \\\n\"${CMAKE_CURRENT_SOURCE_DIR}/${file}\"")
 endforeach()
 
-configure_file(Doxyfile.in Doxyfile @ONLY)
+set(DOXYGEN_SKIP_DOT TRUE)
+find_package(Doxygen)
 
-add_custom_target(docs ALL "${DOXYGEN_EXECUTABLE}"
-                  WORKING_DIRECTORY "${GLFW_BINARY_DIR}/docs"
-                  COMMENT "Generating HTML documentation" VERBATIM)
+if (NOT DOXYGEN_FOUND OR DOXYGEN_VERSION VERSION_LESS "1.9.8")
+    message(STATUS "Documentation generation requires Doxygen 1.9.8 or later")
+else()
+    configure_file(Doxyfile.in Doxyfile @ONLY)
+    add_custom_command(OUTPUT "html/index.html"
+                       COMMAND "${DOXYGEN_EXECUTABLE}"
+                       WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}"
+                       MAIN_DEPENDENCY Doxyfile
+                       DEPENDS ${header_paths} ${source_files} ${extra_files}
+                       COMMENT "Generating HTML documentation"
+                       VERBATIM)
 
-set_target_properties(docs PROPERTIES FOLDER "GLFW3")
+    add_custom_target(docs ALL SOURCES "html/index.html")
+    set_target_properties(docs PROPERTIES FOLDER "GLFW3")
+
+    if (GLFW_INSTALL)
+        install(DIRECTORY "${GLFW_BINARY_DIR}/docs/html"
+                DESTINATION "${CMAKE_INSTALL_DOCDIR}")
+    endif()
+endif()