CMake: Install licenses and HTML readmes

CMakeLists.txt

@@ -940,6 +940,23 @@ configure_file(${CMAKE_CURRENT_SOURCE_DIR}/src/core/flags.h.in ${CMAKE_CURRENT_B
 install(FILES ${CMAKE_CURRENT_BINARY_DIR}/flags.h DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/mgba COMPONENT lib${BINARY_NAME})
 
 # Packaging
+install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/res/licenses DESTINATION ${CMAKE_INSTALL_DOCDIR} COMPONENT lib${BINARY_NAME})
+if(DEFINED EXTRA_LICENSES)
+	install(FILES ${EXTRA_LICENSES} DESTINATION ${CMAKE_INSTALL_DOCDIR}/licenses COMPONENT lib${BINARY_NAME})
+endif()
+
+file(GLOB READMES ${CMAKE_CURRENT_SOURCE_DIR}/README*.md)
+install(FILES ${READMES} ${CMAKE_CURRENT_SOURCE_DIR}/CHANGES DESTINATION ${CMAKE_INSTALL_DOCDIR} COMPONENT lib${BINARY_NAME})
+
+find_program(MARKDOWN NAMES markdown kramdown pandoc)
+if(MARKDOWN)
+	foreach(README ${READMES})
+		get_filename_component(README_BASE "${README}" NAME_WE)
+		set(README_HTML "${README_BASE}.html")
+		install(CODE "execute_process(COMMAND \"${MARKDOWN}\" \"${README}\" OUTPUT_FILE \"\$ENV{DESTDIR}\${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_DOCDIR}/${README_HTML}\")")
+	endforeach()
+endif()
+
 set(CPACK_PACKAGE_VERSION ${VERSION_STRING})
 set(CPACK_PACKAGE_VERSION_MAJOR ${LIB_VERSION_MAJOR})
 set(CPACK_PACKAGE_VERSION_MINOR ${LIB_VERSION_MINOR})
@@ -957,9 +974,6 @@ SET(CPACK_DEB_COMPONENT_INSTALL ON)
 
 set(CPACK_STRIP_FILES ${BINARY_NAME})
 
-file(GLOB READMES ${CMAKE_CURRENT_SOURCE_DIR}/README*.md)
-install(FILES ${READMES} ${CMAKE_CURRENT_SOURCE_DIR}/CHANGES DESTINATION ${CMAKE_INSTALL_DOCDIR} COMPONENT lib${BINARY_NAME})
-
 include(CPack)
 
 # Summaries