cmake/modules/FindRuby.cmake

   1 # - Find Ruby
   2 # This module finds if Ruby is installed and determines where the include files
   3 # and libraries are. It also determines what the name of the library is. This
   4 # code sets the following variables:
   5 #
   6 #  RUBY_INCLUDE_PATH = path to where ruby.h can be found
   7 #  RUBY_EXECUTABLE   = full path to the ruby binary
   8
   9 # Copyright (c) 2002 Kitware, Inc., Insight Consortium.  All rights reserved.
  10 # See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
  11
  12
  13 if(RUBY_LIBRARY AND RUBY_INCLUDE_PATH)
  14    # Already in cache, be silent
  15    set(RUBY_FIND_QUIETLY TRUE)
  16 endif (RUBY_LIBRARY AND RUBY_INCLUDE_PATH)
  17
  18 #   RUBY_ARCHDIR=`$RUBY -r rbconfig -e 'printf("%s",Config::CONFIG@<:@"archdir"@:>@)'`
  19 #   RUBY_SITEARCHDIR=`$RUBY -r rbconfig -e 'printf("%s",Config::CONFIG@<:@"sitearchdir"@:>@)'`
  20 #   RUBY_SITEDIR=`$RUBY -r rbconfig -e 'printf("%s",Config::CONFIG@<:@"sitelibdir"@:>@)'`
  21 #   RUBY_LIBDIR=`$RUBY -r rbconfig -e 'printf("%s",Config::CONFIG@<:@"libdir"@:>@)'`
  22 #   RUBY_LIBRUBYARG=`$RUBY -r rbconfig -e 'printf("%s",Config::CONFIG@<:@"LIBRUBYARG_SHARED"@:>@)'`
  23
  24 FIND_PROGRAM(RUBY_EXECUTABLE NAMES ruby ruby1.8 ruby18 )
  25
  26 EXECUTE_PROCESS(COMMAND ${RUBY_EXECUTABLE} -r rbconfig -e "print Config::CONFIG['archdir']"
  27    OUTPUT_VARIABLE RUBY_ARCH_DIR)
  28
  29 EXECUTE_PROCESS(COMMAND ${RUBY_EXECUTABLE} -r rbconfig -e "print Config::CONFIG['libdir']"
  30    OUTPUT_VARIABLE RUBY_POSSIBLE_LIB_PATH)
  31
  32 EXECUTE_PROCESS(COMMAND ${RUBY_EXECUTABLE} -r rbconfig -e "print Config::CONFIG['rubylibdir']"
  33    OUTPUT_VARIABLE RUBY_RUBY_LIB_PATH)
  34
  35 # site_ruby
  36 EXECUTE_PROCESS(COMMAND ${RUBY_EXECUTABLE} -r rbconfig -e "print Config::CONFIG['sitearchdir']"
  37    OUTPUT_VARIABLE RUBY_SITEARCH_DIR)
  38
  39 EXECUTE_PROCESS(COMMAND ${RUBY_EXECUTABLE} -r rbconfig -e "print Config::CONFIG['sitelibdir']"
  40    OUTPUT_VARIABLE RUBY_SITELIB_DIR)
  41
  42
  43 # vendor_ruby
  44 EXECUTE_PROCESS(COMMAND ${RUBY_EXECUTABLE} -r vendor-specific -e "print '-rvendor-specific'"
  45    OUTPUT_VARIABLE RUBY_VENDOR_ARG)
  46
  47 IF(RUBY_VENDOR_ARG)
  48     EXECUTE_PROCESS(COMMAND ${RUBY_EXECUTABLE} -r rbconfig -e "print Config::CONFIG['vendorarchdir']"
  49        OUTPUT_VARIABLE RUBY_VENDORARCH_DIR)
  50
  51     EXECUTE_PROCESS(COMMAND ${RUBY_EXECUTABLE} -r rbconfig -e "print Config::CONFIG['vendorlibdir']"
  52        OUTPUT_VARIABLE RUBY_VENDORLIB_DIR)
  53 ELSE(RUBY_VENDOR_ARG)
  54     # fall back to site*dir
  55     EXECUTE_PROCESS(COMMAND ${RUBY_EXECUTABLE} -r rbconfig -e "print Config::CONFIG['sitearchdir']"
  56        OUTPUT_VARIABLE RUBY_VENDORARCH_DIR)
  57
  58     EXECUTE_PROCESS(COMMAND ${RUBY_EXECUTABLE} -r rbconfig -e "print Config::CONFIG['sitelibdir']"
  59        OUTPUT_VARIABLE RUBY_VENDORLIB_DIR)
  60 ENDIF(RUBY_VENDOR_ARG)
  61
  62 # this is not needed if you use "print" inside the ruby statements
  63 # remove the new lines from the output by replacing them with empty strings
  64 #STRING(REPLACE "\n" "" RUBY_ARCH_DIR "${RUBY_ARCH_DIR}")
  65 #STRING(REPLACE "\n" "" RUBY_POSSIBLE_LIB_PATH "${RUBY_POSSIBLE_LIB_PATH}")
  66 #STRING(REPLACE "\n" "" RUBY_RUBY_LIB_PATH "${RUBY_RUBY_LIB_PATH}")
  67
  68
  69 FIND_PATH(RUBY_INCLUDE_PATH
  70    NAMES ruby.h
  71   PATHS
  72    ${RUBY_ARCH_DIR}
  73   /usr/lib/ruby/1.8/i586-linux-gnu/ )
  74
  75 FIND_LIBRARY(RUBY_LIBRARY
  76   NAMES ruby ruby1.8
  77   PATHS ${RUBY_POSSIBLE_LIB_PATH}
  78   )
  79
  80 MARK_AS_ADVANCED(
  81   RUBY_EXECUTABLE
  82   RUBY_LIBRARY
  83   RUBY_INCLUDE_PATH
  84   )