[llvm] [OCaml] build ocaml_doc by default to avoid missing install artifacts (PR #154412)

[via llvm-commits]

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@@ -136,17 +136,19 @@ if( NOT uses_ocaml LESS 0 AND LLVM_ENABLE_OCAMLDOC )
     list(APPEND odoc_files -load ${odoc_file})
   endforeach()
 
-  add_custom_target(ocaml_doc
-    COMMAND ${CMAKE_COMMAND} -E remove_directory ${CMAKE_CURRENT_BINARY_DIR}/ocamldoc/html
-    COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_CURRENT_BINARY_DIR}/ocamldoc/html
-    COMMAND ${OCAMLFIND} ocamldoc -d ${CMAKE_CURRENT_BINARY_DIR}/ocamldoc/html
-                                  -sort -colorize-code -html ${odoc_files}
-    COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_CURRENT_SOURCE_DIR}/_ocamldoc/style.css
-                                     ${CMAKE_CURRENT_BINARY_DIR}/ocamldoc/html)
+  if(LLVM_BUILD_DOCS)
+    add_custom_target(ocaml_doc ${OCAML_DOC_ADD_TO_ALL}
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Acture wrote:

@nikic Let me know if there's anything else I can do.

https://github.com/llvm/llvm-project/pull/154412