cmake/modules-docs.cmake: added target to generate readme for modules

- e.g., make acc_readme

cmake/modules-docs.cmake

@@ -87,6 +87,11 @@ else()
       DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${MODULE_NAME}/${MODULE_NAME}.txt
     )
 
+    add_custom_target(
+      ${MODULE_NAME}_readme
+      DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/${MODULE_NAME}/README
+    )
+
     add_custom_target(
       ${MODULE_NAME}_doc_html DEPENDS ${DOCS_OUTPUT_DIR}/${MODULE_NAME}.html
     )
@@ -117,6 +122,16 @@ else()
             "Generating text documentation with xsltproc and lynx for ${MODULE_NAME}"
         )
 
+        add_custom_command(
+          OUTPUT ${CMAKE_CURRENT_SOURCE_DIR}/${MODULE_NAME}/README
+          COMMAND
+            ${CMAKE_COMMAND} -E copy
+            ${CMAKE_CURRENT_BINARY_DIR}/${MODULE_NAME}/${MODULE_NAME}.txt
+            ${CMAKE_CURRENT_SOURCE_DIR}/${MODULE_NAME}/README
+          DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${MODULE_NAME}/${MODULE_NAME}.txt
+          COMMENT "Generating README file for module ${MODULE_NAME}"
+        )
+
         add_custom_command(
           OUTPUT ${DOCS_OUTPUT_DIR}/${MODULE_NAME}.html
           COMMAND
@@ -145,6 +160,5 @@ else()
         OPTIONAL
       )
     endif()
-
   endfunction()
 endif()