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a0a26f222b
Closes PR15325. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223071 91177308-0d34-0410-b5e6-96231b3b80d8
104 lines
2.3 KiB
CMake
104 lines
2.3 KiB
CMake
# CMake find_package() module for the OCaml language.
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# Assumes ocamlfind will be used for compilation.
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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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# find_package(OCaml)
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#
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# If successful, the following variables will be defined:
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# OCAMLFIND
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# OCAML_VERSION
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# OCAML_STDLIB_PATH
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# HAVE_OCAMLOPT
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#
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# Also provides find_ocamlfind_package() macro.
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#
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# Example usage:
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#
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# find_ocamlfind_package(ctypes)
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#
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# In any case, the following variables are defined:
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#
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# HAVE_OCAML_${pkg}
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#
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# If successful, the following variables will be defined:
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#
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# OCAML_${pkg}_VERSION
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include( FindPackageHandleStandardArgs )
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find_program(OCAMLFIND
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NAMES ocamlfind)
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if( OCAMLFIND )
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execute_process(
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COMMAND ${OCAMLFIND} ocamlc -version
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OUTPUT_VARIABLE OCAML_VERSION
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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execute_process(
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COMMAND ${OCAMLFIND} ocamlc -where
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OUTPUT_VARIABLE OCAML_STDLIB_PATH
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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execute_process(
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COMMAND ${OCAMLFIND} ocamlc -version
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OUTPUT_QUIET
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RESULT_VARIABLE find_ocaml_result)
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if( find_ocaml_result EQUAL 0 )
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set(HAVE_OCAMLOPT TRUE)
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else()
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set(HAVE_OCAMLOPT FALSE)
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endif()
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endif()
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find_package_handle_standard_args( OCaml DEFAULT_MSG
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OCAMLFIND
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OCAML_VERSION
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OCAML_STDLIB_PATH)
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mark_as_advanced(
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OCAMLFIND)
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function(find_ocamlfind_package pkg)
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CMAKE_PARSE_ARGUMENTS(ARG "OPTIONAL" "VERSION" "" ${ARGN})
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execute_process(
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COMMAND "${OCAMLFIND}" "query" "${pkg}" "-format" "%v"
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RESULT_VARIABLE result
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OUTPUT_VARIABLE version
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ERROR_VARIABLE error
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OUTPUT_STRIP_TRAILING_WHITESPACE
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ERROR_STRIP_TRAILING_WHITESPACE)
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if( NOT result EQUAL 0 AND NOT ARG_OPTIONAL )
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message(FATAL_ERROR ${error})
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endif()
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if( result EQUAL 0 )
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set(found TRUE)
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else()
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set(found FALSE)
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endif()
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if( found AND ARG_VERSION )
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if( version VERSION_LESS ARG_VERSION AND ARG_OPTIONAL )
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# If it's optional and the constraint is not satisfied, pretend
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# it wasn't found.
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set(found FALSE)
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elseif( version VERSION_LESS ARG_VERSION )
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message(FATAL_ERROR
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"ocamlfind package ${pkg} should have version ${ARG_VERSION} or newer")
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endif()
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endif()
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string(TOUPPER ${pkg} pkg)
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set(HAVE_OCAML_${pkg} ${found}
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PARENT_SCOPE)
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set(OCAML_${pkg}_VERSION ${version}
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PARENT_SCOPE)
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endfunction()
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