208 lines
		
	
	
		
			6.7 KiB
		
	
	
	
		
			CMake
		
	
	
	
			
		
		
	
	
			208 lines
		
	
	
		
			6.7 KiB
		
	
	
	
		
			CMake
		
	
	
	
# CMake build rules for the OCaml language.
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# Assumes FindOCaml is used.
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# http://ocaml.org/
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#
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# Example usage:
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#
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# add_ocaml_library(pkg_a OCAML mod_a OCAMLDEP pkg_b C mod_a_stubs PKG ctypes LLVM core)
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#
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# Unnamed parameters:
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#
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#   * Library name.
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#
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# Named parameters:
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#
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# OCAML     OCaml module names. Imply presence of a corresponding .ml and .mli files.
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# OCAMLDEP  Names of libraries this library depends on.
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# C         C stub sources. Imply presence of a corresponding .c file.
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# CFLAGS    Additional arguments passed when compiling C stubs.
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# PKG       Names of ocamlfind packages this library depends on.
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# LLVM      Names of LLVM libraries this library depends on.
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# NOCOPY    Do not automatically copy sources (.c, .ml, .mli) from the source directory,
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#           e.g. if they are generated.
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#
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function(add_ocaml_library name)
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  CMAKE_PARSE_ARGUMENTS(ARG "NOCOPY" "" "OCAML;OCAMLDEP;C;CFLAGS;PKG;LLVM" ${ARGN})
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  set(src ${CMAKE_CURRENT_SOURCE_DIR})
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  set(bin ${CMAKE_CURRENT_BINARY_DIR})
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  set(ocaml_pkgs)
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  foreach( ocaml_pkg ${ARG_PKG} )
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    list(APPEND ocaml_pkgs "-package" "${ocaml_pkg}")
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  endforeach()
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  set(sources)
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  set(ocaml_inputs)
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  set(ocaml_outputs "${bin}/${name}.cma")
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  if( ARG_C )
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    list(APPEND ocaml_outputs
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         "${bin}/lib${name}${CMAKE_STATIC_LIBRARY_SUFFIX}")
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    if ( BUILD_SHARED_LIBS )
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      list(APPEND ocaml_outputs
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           "${bin}/dll${name}${CMAKE_SHARED_LIBRARY_SUFFIX}")
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    endif()
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  endif()
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  if( HAVE_OCAMLOPT )
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    list(APPEND ocaml_outputs
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         "${bin}/${name}.cmxa"
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         "${bin}/${name}${CMAKE_STATIC_LIBRARY_SUFFIX}")
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  endif()
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  set(ocaml_flags "-lstdc++" "-ldopt" "-L${LLVM_LIBRARY_DIR}"
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                  "-ccopt" "-L\\$CAMLORIGIN/.."
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                  "-ccopt" "-Wl,-rpath,\\$CAMLORIGIN/.."
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                  ${ocaml_pkgs})
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  foreach( ocaml_dep ${ARG_OCAMLDEP} )
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    get_target_property(dep_ocaml_flags "ocaml_${ocaml_dep}" OCAML_FLAGS)
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    list(APPEND ocaml_flags ${dep_ocaml_flags})
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  endforeach()
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  if( NOT BUILD_SHARED_LIBS )
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    list(APPEND ocaml_flags "-custom")
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  endif()
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  explicit_map_components_to_libraries(llvm_libs ${ARG_LLVM})
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  foreach( llvm_lib ${llvm_libs} )
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    list(APPEND ocaml_flags "-l${llvm_lib}" )
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  endforeach()
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  get_property(system_libs TARGET LLVMSupport PROPERTY LLVM_SYSTEM_LIBS)
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  foreach(system_lib ${system_libs})
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    if (system_lib MATCHES "^-")
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      # If it's an option, pass it without changes.
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      list(APPEND ocaml_flags "${system_lib}" )
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    else()
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      # Otherwise assume it's a library name we need to link with.
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      list(APPEND ocaml_flags "-l${system_lib}" )
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    endif()
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  endforeach()
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  string(REPLACE ";" " " ARG_CFLAGS "${ARG_CFLAGS}")
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  set(c_flags "${ARG_CFLAGS} ${LLVM_DEFINITIONS}")
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  foreach( include_dir ${LLVM_INCLUDE_DIR} ${LLVM_MAIN_INCLUDE_DIR} )
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    set(c_flags "${c_flags} -I${include_dir}")
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  endforeach()
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  foreach( ocaml_file ${ARG_OCAML} )
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    list(APPEND sources "${ocaml_file}.mli" "${ocaml_file}.ml")
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    list(APPEND ocaml_inputs "${bin}/${ocaml_file}.mli" "${bin}/${ocaml_file}.ml")
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    list(APPEND ocaml_outputs "${bin}/${ocaml_file}.cmi" "${bin}/${ocaml_file}.cmo")
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    if( HAVE_OCAMLOPT )
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      list(APPEND ocaml_outputs
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           "${bin}/${ocaml_file}.cmx"
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           "${bin}/${ocaml_file}${CMAKE_C_OUTPUT_EXTENSION}")
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    endif()
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  endforeach()
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  foreach( c_file ${ARG_C} )
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    list(APPEND sources "${c_file}.c")
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    list(APPEND c_inputs  "${bin}/${c_file}.c")
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    list(APPEND c_outputs "${bin}/${c_file}${CMAKE_C_OUTPUT_EXTENSION}")
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  endforeach()
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  if( NOT ARG_NOCOPY )
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    foreach( source ${sources} )
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      add_custom_command(
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          OUTPUT "${bin}/${source}"
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          COMMAND "${CMAKE_COMMAND}" "-E" "copy" "${src}/${source}" "${bin}"
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          DEPENDS "${src}/${source}"
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          COMMENT "Copying ${source} to build area")
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    endforeach()
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  endif()
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  foreach( c_input ${c_inputs} )
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    get_filename_component(basename "${c_input}" NAME_WE)
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    add_custom_command(
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      OUTPUT "${basename}${CMAKE_C_OUTPUT_EXTENSION}"
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      COMMAND "${OCAMLFIND}" "ocamlc" "-c" "${c_input}" -ccopt ${c_flags}
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      DEPENDS "${c_input}"
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      COMMENT "Building OCaml stub object file ${basename}${CMAKE_C_OUTPUT_EXTENSION}"
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      VERBATIM)
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  endforeach()
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  set(ocaml_params)
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  foreach( ocaml_input ${ocaml_inputs} ${c_outputs})
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    get_filename_component(filename "${ocaml_input}" NAME)
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    list(APPEND ocaml_params "${filename}")
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  endforeach()
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  if( APPLE )
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    set(ocaml_rpath "@executable_path/../../lib")
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  elseif( UNIX )
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    set(ocaml_rpath "\\$ORIGIN/../../lib")
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  endif()
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  list(APPEND ocaml_flags "-ldopt" "-Wl,-rpath,${ocaml_rpath}")
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  add_custom_command(
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    OUTPUT ${ocaml_outputs}
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    COMMAND "${OCAMLFIND}" "ocamlmklib" "-o" "${name}" ${ocaml_flags} ${ocaml_params}
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    DEPENDS ${ocaml_inputs} ${c_outputs}
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    COMMENT "Building OCaml library ${name}"
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    VERBATIM)
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  add_custom_command(
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    OUTPUT "${bin}/${name}.odoc"
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    COMMAND "${OCAMLFIND}" "ocamldoc"
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            "-I" "${bin}"
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            "-I" "${LLVM_LIBRARY_DIR}/ocaml/"
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            "-dump" "${bin}/${name}.odoc"
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            ${ocaml_pkgs} ${ocaml_inputs}
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    DEPENDS ${ocaml_inputs} ${ocaml_outputs}
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    COMMENT "Building OCaml documentation for ${name}"
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    VERBATIM)
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  add_custom_target("ocaml_${name}" ALL DEPENDS ${ocaml_outputs} "${bin}/${name}.odoc")
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  set_target_properties("ocaml_${name}" PROPERTIES
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    OCAML_FLAGS "-I;${bin}")
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  set_target_properties("ocaml_${name}" PROPERTIES
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    OCAML_ODOC "${bin}/${name}.odoc")
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  foreach( ocaml_dep ${ARG_OCAMLDEP} )
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    add_dependencies("ocaml_${name}" "ocaml_${ocaml_dep}")
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  endforeach()
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  foreach( llvm_lib ${llvm_libs} )
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    add_dependencies("ocaml_${name}" "${llvm_lib}")
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  endforeach()
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  set(install_files)
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  set(install_shlibs)
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  foreach( ocaml_output ${ocaml_outputs} )
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    get_filename_component(ext "${ocaml_output}" EXT)
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    if( NOT (ext STREQUAL ".cmo" OR
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             ext STREQUAL CMAKE_C_OUTPUT_EXTENSION OR
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             ext STREQUAL CMAKE_SHARED_LIBRARY_SUFFIX) )
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      list(APPEND install_files "${ocaml_output}")
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    elseif( ext STREQUAL CMAKE_SHARED_LIBRARY_SUFFIX)
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      list(APPEND install_shlibs "${ocaml_output}")
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    endif()
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  endforeach()
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  install(FILES ${install_files}
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          DESTINATION lib/ocaml)
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  install(FILES ${install_shlibs}
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          PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE
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                      GROUP_READ GROUP_EXECUTE
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                      WORLD_READ WORLD_EXECUTE
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          DESTINATION lib/ocaml)
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  foreach( install_file ${install_files} ${install_shlibs} )
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    get_filename_component(filename "${install_file}" NAME)
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    add_custom_command(TARGET "ocaml_${name}" POST_BUILD
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      COMMAND "${CMAKE_COMMAND}" "-E" "copy" "${install_file}"
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                                             "${LLVM_LIBRARY_DIR}/ocaml/"
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      COMMENT "Copying OCaml library component ${filename} to intermediate area"
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      VERBATIM)
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  endforeach()
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endfunction()
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