| Peter Zotov | a0a26f2 | 2014-12-01 19:50:23 +0000 | [diff] [blame] | 1 | # CMake find_package() module for the OCaml language. |
| 2 | # Assumes ocamlfind will be used for compilation. |
| 3 | # http://ocaml.org/ |
| 4 | # |
| 5 | # Example usage: |
| 6 | # |
| 7 | # find_package(OCaml) |
| 8 | # |
| 9 | # If successful, the following variables will be defined: |
| 10 | # OCAMLFIND |
| 11 | # OCAML_VERSION |
| 12 | # OCAML_STDLIB_PATH |
| 13 | # HAVE_OCAMLOPT |
| 14 | # |
| 15 | # Also provides find_ocamlfind_package() macro. |
| 16 | # |
| 17 | # Example usage: |
| 18 | # |
| 19 | # find_ocamlfind_package(ctypes) |
| 20 | # |
| 21 | # In any case, the following variables are defined: |
| 22 | # |
| 23 | # HAVE_OCAML_${pkg} |
| 24 | # |
| 25 | # If successful, the following variables will be defined: |
| 26 | # |
| 27 | # OCAML_${pkg}_VERSION |
| 28 | |
| 29 | include( FindPackageHandleStandardArgs ) |
| 30 | |
| 31 | find_program(OCAMLFIND |
| 32 | NAMES ocamlfind) |
| 33 | |
| 34 | if( OCAMLFIND ) |
| 35 | execute_process( |
| 36 | COMMAND ${OCAMLFIND} ocamlc -version |
| 37 | OUTPUT_VARIABLE OCAML_VERSION |
| 38 | OUTPUT_STRIP_TRAILING_WHITESPACE) |
| 39 | |
| 40 | execute_process( |
| 41 | COMMAND ${OCAMLFIND} ocamlc -where |
| 42 | OUTPUT_VARIABLE OCAML_STDLIB_PATH |
| 43 | OUTPUT_STRIP_TRAILING_WHITESPACE) |
| 44 | |
| 45 | execute_process( |
| 46 | COMMAND ${OCAMLFIND} ocamlc -version |
| 47 | OUTPUT_QUIET |
| 48 | RESULT_VARIABLE find_ocaml_result) |
| 49 | if( find_ocaml_result EQUAL 0 ) |
| 50 | set(HAVE_OCAMLOPT TRUE) |
| 51 | else() |
| 52 | set(HAVE_OCAMLOPT FALSE) |
| 53 | endif() |
| 54 | endif() |
| 55 | |
| 56 | find_package_handle_standard_args( OCaml DEFAULT_MSG |
| 57 | OCAMLFIND |
| 58 | OCAML_VERSION |
| 59 | OCAML_STDLIB_PATH) |
| 60 | |
| 61 | mark_as_advanced( |
| 62 | OCAMLFIND) |
| 63 | |
| 64 | function(find_ocamlfind_package pkg) |
| 65 | CMAKE_PARSE_ARGUMENTS(ARG "OPTIONAL" "VERSION" "" ${ARGN}) |
| 66 | |
| 67 | execute_process( |
| 68 | COMMAND "${OCAMLFIND}" "query" "${pkg}" "-format" "%v" |
| 69 | RESULT_VARIABLE result |
| 70 | OUTPUT_VARIABLE version |
| 71 | ERROR_VARIABLE error |
| 72 | OUTPUT_STRIP_TRAILING_WHITESPACE |
| 73 | ERROR_STRIP_TRAILING_WHITESPACE) |
| 74 | |
| 75 | if( NOT result EQUAL 0 AND NOT ARG_OPTIONAL ) |
| 76 | message(FATAL_ERROR ${error}) |
| 77 | endif() |
| 78 | |
| 79 | if( result EQUAL 0 ) |
| 80 | set(found TRUE) |
| 81 | else() |
| 82 | set(found FALSE) |
| 83 | endif() |
| 84 | |
| 85 | if( found AND ARG_VERSION ) |
| 86 | if( version VERSION_LESS ARG_VERSION AND ARG_OPTIONAL ) |
| 87 | # If it's optional and the constraint is not satisfied, pretend |
| 88 | # it wasn't found. |
| 89 | set(found FALSE) |
| 90 | elseif( version VERSION_LESS ARG_VERSION ) |
| 91 | message(FATAL_ERROR |
| 92 | "ocamlfind package ${pkg} should have version ${ARG_VERSION} or newer") |
| 93 | endif() |
| 94 | endif() |
| 95 | |
| 96 | string(TOUPPER ${pkg} pkg) |
| 97 | |
| 98 | set(HAVE_OCAML_${pkg} ${found} |
| 99 | PARENT_SCOPE) |
| 100 | |
| 101 | set(OCAML_${pkg}_VERSION ${version} |
| 102 | PARENT_SCOPE) |
| 103 | endfunction() |