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CMake/Modules/FindRuby.cmake
Julien Marrec 905d5667e8 FindRuby: Add support for RVM installations
2020-03-23 13:22:23 +01:00

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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
#[=======================================================================[.rst:
FindRuby
--------
Find Ruby
This module finds if Ruby is installed and determines where the
include files and libraries are. Ruby 1.8 through 2.7 are
supported.
The minimum required version of Ruby can be specified using the
standard syntax, e.g.
.. code-block:: cmake
find_package(Ruby 2.5.1 EXACT REQUIRED)
# OR
find_package(Ruby 2.4)
It also determines what the name of the library is.
Virtual environments such as RVM are handled as well, by passing
the argument ``Ruby_FIND_VIRTUALENV``
Result Variables
^^^^^^^^^^^^^^^^
This module will set the following variables in your project:
``Ruby_FOUND``
set to true if ruby was found successfully
``Ruby_EXECUTABLE``
full path to the ruby binary
``Ruby_INCLUDE_DIRS``
include dirs to be used when using the ruby library
``Ruby_LIBRARIES``
libraries needed to use ruby from C.
``Ruby_VERSION``
the version of ruby which was found, e.g. "1.8.7"
``Ruby_VERSION_MAJOR``
Ruby major version.
``Ruby_VERSION_MINOR``
Ruby minor version.
``Ruby_VERSION_PATCH``
Ruby patch version.
Also:
``Ruby_INCLUDE_PATH``
same as Ruby_INCLUDE_DIRS, only provided for compatibility reasons, don't use it
Hints
^^^^^
``Ruby_ROOT_DIR``
Define the root directory of a Ruby installation.
``Ruby_FIND_VIRTUALENV``
This variable defines the handling of virtual environments managed by
``rvm``. It is meaningful only when a virtual environment
is active (i.e. the ``rvm`` script has been evaluated or at least the
``MY_RUBY_HOME`` environment variable is set).
The ``Ruby_FIND_VIRTUALENV`` variable can be set to empty or
one of the following:
* ``FIRST``: The virtual environment is used before any other standard
paths to look-up for the interpreter. This is the default.
* ``ONLY``: Only the virtual environment is used to look-up for the
interpreter.
* ``STANDARD``: The virtual environment is not used to look-up for the
interpreter (assuming it isn't still in the PATH...)
#]=======================================================================]
# Backwards compatibility
# Define camel case versions of input variables
foreach(UPPER
RUBY_EXECUTABLE
RUBY_LIBRARY
RUBY_INCLUDE_DIR
RUBY_CONFIG_INCLUDE_DIR
)
if (DEFINED ${UPPER})
string(REPLACE "RUBY_" "Ruby_" Camel ${UPPER})
if (NOT DEFINED ${Camel})
set(${Camel} ${${UPPER}})
endif()
endif()
endforeach()
# Ruby_ARCHDIR=`$RUBY -r rbconfig -e 'printf("%s",Config::CONFIG@<:@"archdir"@:>@)'`
# Ruby_SITEARCHDIR=`$RUBY -r rbconfig -e 'printf("%s",Config::CONFIG@<:@"sitearchdir"@:>@)'`
# Ruby_SITEDIR=`$RUBY -r rbconfig -e 'printf("%s",Config::CONFIG@<:@"sitelibdir"@:>@)'`
# Ruby_LIBDIR=`$RUBY -r rbconfig -e 'printf("%s",Config::CONFIG@<:@"libdir"@:>@)'`
# Ruby_LIBRUBYARG=`$RUBY -r rbconfig -e 'printf("%s",Config::CONFIG@<:@"LIBRUBYARG_SHARED"@:>@)'`
# uncomment the following line to get debug output for this file
# set(_Ruby_DEBUG_OUTPUT TRUE)
# Determine the list of possible names of the ruby executable depending
# on which version of ruby is required
set(_Ruby_POSSIBLE_EXECUTABLE_NAMES ruby)
# If not specified, allow everything as far back as 1.8.0
if(NOT DEFINED Ruby_FIND_VERSION_MAJOR)
set(Ruby_FIND_VERSION "1.8.0")
set(Ruby_FIND_VERSION_MAJOR 1)
set(Ruby_FIND_VERSION_MINOR 8)
set(Ruby_FIND_VERSION_PATCH 0)
endif()
if(_Ruby_DEBUG_OUTPUT)
message("Ruby_FIND_VERSION=${Ruby_FIND_VERSION}")
message("Ruby_FIND_VERSION_MAJOR=${Ruby_FIND_VERSION_MAJOR}")
message("Ruby_FIND_VERSION_MINOR=${Ruby_FIND_VERSION_MINOR}")
message("Ruby_FIND_VERSION_PATCH=${Ruby_FIND_VERSION_PATCH}")
endif()
set(Ruby_FIND_VERSION_SHORT_NODOT "${Ruby_FIND_VERSION_MAJOR}${Ruby_FIND_VERSION_MINOR}")
# Set name of possible executables, ignoring the minor
# Eg:
# 2.1.1 => from ruby27 to ruby21 included
# 2.1 => from ruby27 to ruby21 included
# 2 => from ruby26 to ruby20 included
# empty => from ruby27 to ruby18 included
if(NOT Ruby_FIND_VERSION_EXACT)
foreach(_ruby_version RANGE 27 18 -1)
string(SUBSTRING "${_ruby_version}" 0 1 _ruby_major_version)
string(SUBSTRING "${_ruby_version}" 1 1 _ruby_minor_version)
if(NOT "${_ruby_major_version}${_ruby_minor_version}" VERSION_LESS ${Ruby_FIND_VERSION_SHORT_NODOT})
# Append both rubyX.Y and rubyXY (eg: ruby2.7 ruby27)
list(APPEND _Ruby_POSSIBLE_EXECUTABLE_NAMES ruby${_ruby_major_version}.${_ruby_minor_version} ruby${_ruby_major_version}${_ruby_minor_version})
else()
break()
endif()
endforeach()
list(REMOVE_DUPLICATES _Ruby_POSSIBLE_EXECUTABLE_NAMES)
endif()
# virtual environments handling (eg RVM)
if (DEFINED ENV{MY_RUBY_HOME})
if(_Ruby_DEBUG_OUTPUT)
message("My ruby home is defined: $ENV{MY_RUBY_HOME}")
endif()
if (DEFINED Ruby_FIND_VIRTUALENV)
if (NOT Ruby_FIND_VIRTUALENV MATCHES "^(FIRST|ONLY|STANDARD)$")
message (AUTHOR_WARNING "FindRuby: ${Ruby_FIND_VIRTUALENV}: invalid value for 'Ruby_FIND_VIRTUALENV'. 'FIRST', 'ONLY' or 'STANDARD' expected. 'FIRST' will be used instead.")
set (_Ruby_FIND_VIRTUALENV "FIRST")
else()
set (_Ruby_FIND_VIRTUALENV ${Ruby_FIND_VIRTUALENV})
endif()
else()
set (_Ruby_FIND_VIRTUALENV FIRST)
endif()
else()
if (DEFINED Ruby_FIND_VIRTUALENV)
message("Environment variable MY_RUBY_HOME isn't set, defaulting back to Ruby_FIND_VIRTUALENV=STANDARD")
endif()
set (_Ruby_FIND_VIRTUALENV STANDARD)
endif()
if(_Ruby_DEBUG_OUTPUT)
message("_Ruby_POSSIBLE_EXECUTABLE_NAMES=${_Ruby_POSSIBLE_EXECUTABLE_NAMES}")
message("_Ruby_FIND_VIRTUALENV=${_Ruby_FIND_VIRTUALENV}")
endif()
function (_RUBY_VALIDATE_INTERPRETER)
if (NOT Ruby_EXECUTABLE)
return()
endif()
cmake_parse_arguments (PARSE_ARGV 0 _RVI "EXACT;CHECK_EXISTS" "" "")
if (_RVI_UNPARSED_ARGUMENTS)
set (expected_version ${_RVI_UNPARSED_ARGUMENTS})
else()
unset (expected_version)
endif()
if (_RVI_CHECK_EXISTS AND NOT EXISTS "${Ruby_EXECUTABLE}")
# interpreter does not exist anymore
set (_Ruby_Interpreter_REASON_FAILURE "Cannot find the interpreter \"${Ruby_EXECUTABLE}\"")
set_property (CACHE Ruby_EXECUTABLE PROPERTY VALUE "Ruby_EXECUTABLE-NOTFOUND")
return()
endif()
# Check the version it returns
# executable found must have a specific version
execute_process (COMMAND "${Ruby_EXECUTABLE}" -e "puts RUBY_VERSION"
RESULT_VARIABLE result
OUTPUT_VARIABLE version
ERROR_QUIET
OUTPUT_STRIP_TRAILING_WHITESPACE)
if (result OR (_RVI_EXACT AND NOT version VERSION_EQUAL expected_version) OR (version VERSION_LESS expected_version))
# interpreter not usable or has wrong major version
if (result)
set (_Ruby_Interpreter_REASON_FAILURE "Cannot use the interpreter \"${Ruby_EXECUTABLE}\"")
else()
set (_Ruby_Interpreter_REASON_FAILURE "Wrong major version for the interpreter \"${Ruby_EXECUTABLE}\"")
endif()
set_property (CACHE Ruby_EXECUTABLE PROPERTY VALUE "Ruby_EXECUTABLE-NOTFOUND")
return()
endif()
endfunction()
while(1)
# Virtual environments handling
if(_Ruby_FIND_VIRTUALENV MATCHES "^(FIRST|ONLY)$")
if(_Ruby_DEBUG_OUTPUT)
message("Inside Matches")
endif()
find_program (Ruby_EXECUTABLE
NAMES ${_Ruby_POSSIBLE_EXECUTABLE_NAMES}
NAMES_PER_DIR
PATHS ENV MY_RUBY_HOME
PATH_SUFFIXES bin Scripts
NO_CMAKE_PATH
NO_CMAKE_ENVIRONMENT_PATH
NO_SYSTEM_ENVIRONMENT_PATH
NO_CMAKE_SYSTEM_PATH)
if(_Ruby_DEBUG_OUTPUT)
message("Ruby_EXECUTABLE=${Ruby_EXECUTABLE}")
endif()
_RUBY_VALIDATE_INTERPRETER (${Ruby_FIND_VERSION}})
if(Ruby_EXECUTABLE)
break()
endif()
if(NOT _Ruby_FIND_VIRTUALENV STREQUAL "ONLY")
break()
endif()
elseif(_Ruby_DEBUG_OUTPUT)
message("_Ruby_FIND_VIRTUALENV doesn't match: ${_Ruby_FIND_VIRTUALENV}")
endif()
# try using standard paths
find_program (Ruby_EXECUTABLE
NAMES ${_Ruby_POSSIBLE_EXECUTABLE_NAMES}
NAMES_PER_DIR)
_RUBY_VALIDATE_INTERPRETER (${Ruby_FIND_VERSION})
if (Ruby_EXECUTABLE)
break()
endif()
break()
endwhile()
if(Ruby_EXECUTABLE AND NOT Ruby_VERSION_MAJOR)
function(_RUBY_CONFIG_VAR RBVAR OUTVAR)
execute_process(COMMAND ${Ruby_EXECUTABLE} -r rbconfig -e "print RbConfig::CONFIG['${RBVAR}']"
RESULT_VARIABLE _Ruby_SUCCESS
OUTPUT_VARIABLE _Ruby_OUTPUT
ERROR_QUIET)
if(_Ruby_SUCCESS OR _Ruby_OUTPUT STREQUAL "")
execute_process(COMMAND ${Ruby_EXECUTABLE} -r rbconfig -e "print Config::CONFIG['${RBVAR}']"
RESULT_VARIABLE _Ruby_SUCCESS
OUTPUT_VARIABLE _Ruby_OUTPUT
ERROR_QUIET)
endif()
set(${OUTVAR} "${_Ruby_OUTPUT}" PARENT_SCOPE)
endfunction()
# query the ruby version
_RUBY_CONFIG_VAR("MAJOR" Ruby_VERSION_MAJOR)
_RUBY_CONFIG_VAR("MINOR" Ruby_VERSION_MINOR)
_RUBY_CONFIG_VAR("TEENY" Ruby_VERSION_PATCH)
# query the different directories
_RUBY_CONFIG_VAR("archdir" Ruby_ARCH_DIR)
_RUBY_CONFIG_VAR("arch" Ruby_ARCH)
_RUBY_CONFIG_VAR("rubyhdrdir" Ruby_HDR_DIR)
_RUBY_CONFIG_VAR("rubyarchhdrdir" Ruby_ARCHHDR_DIR)
_RUBY_CONFIG_VAR("libdir" Ruby_POSSIBLE_LIB_DIR)
_RUBY_CONFIG_VAR("rubylibdir" Ruby_RUBY_LIB_DIR)
# site_ruby
_RUBY_CONFIG_VAR("sitearchdir" Ruby_SITEARCH_DIR)
_RUBY_CONFIG_VAR("sitelibdir" Ruby_SITELIB_DIR)
# vendor_ruby available ?
execute_process(COMMAND ${Ruby_EXECUTABLE} -r vendor-specific -e "print 'true'"
OUTPUT_VARIABLE Ruby_HAS_VENDOR_RUBY ERROR_QUIET)
if(Ruby_HAS_VENDOR_RUBY)
_RUBY_CONFIG_VAR("vendorlibdir" Ruby_VENDORLIB_DIR)
_RUBY_CONFIG_VAR("vendorarchdir" Ruby_VENDORARCH_DIR)
endif()
# save the results in the cache so we don't have to run ruby the next time again
set(Ruby_VERSION_MAJOR ${Ruby_VERSION_MAJOR} CACHE PATH "The Ruby major version" FORCE)
set(Ruby_VERSION_MINOR ${Ruby_VERSION_MINOR} CACHE PATH "The Ruby minor version" FORCE)
set(Ruby_VERSION_PATCH ${Ruby_VERSION_PATCH} CACHE PATH "The Ruby patch version" FORCE)
set(Ruby_ARCH_DIR ${Ruby_ARCH_DIR} CACHE PATH "The Ruby arch dir" FORCE)
set(Ruby_HDR_DIR ${Ruby_HDR_DIR} CACHE PATH "The Ruby header dir (1.9+)" FORCE)
set(Ruby_ARCHHDR_DIR ${Ruby_ARCHHDR_DIR} CACHE PATH "The Ruby arch header dir (2.0+)" FORCE)
set(Ruby_POSSIBLE_LIB_DIR ${Ruby_POSSIBLE_LIB_DIR} CACHE PATH "The Ruby lib dir" FORCE)
set(Ruby_RUBY_LIB_DIR ${Ruby_RUBY_LIB_DIR} CACHE PATH "The Ruby ruby-lib dir" FORCE)
set(Ruby_SITEARCH_DIR ${Ruby_SITEARCH_DIR} CACHE PATH "The Ruby site arch dir" FORCE)
set(Ruby_SITELIB_DIR ${Ruby_SITELIB_DIR} CACHE PATH "The Ruby site lib dir" FORCE)
set(Ruby_HAS_VENDOR_RUBY ${Ruby_HAS_VENDOR_RUBY} CACHE BOOL "Vendor Ruby is available" FORCE)
set(Ruby_VENDORARCH_DIR ${Ruby_VENDORARCH_DIR} CACHE PATH "The Ruby vendor arch dir" FORCE)
set(Ruby_VENDORLIB_DIR ${Ruby_VENDORLIB_DIR} CACHE PATH "The Ruby vendor lib dir" FORCE)
mark_as_advanced(
Ruby_ARCH_DIR
Ruby_ARCH
Ruby_HDR_DIR
Ruby_ARCHHDR_DIR
Ruby_POSSIBLE_LIB_DIR
Ruby_RUBY_LIB_DIR
Ruby_SITEARCH_DIR
Ruby_SITELIB_DIR
Ruby_HAS_VENDOR_RUBY
Ruby_VENDORARCH_DIR
Ruby_VENDORLIB_DIR
Ruby_VERSION_MAJOR
Ruby_VERSION_MINOR
Ruby_VERSION_PATCH
)
endif()
# In case Ruby_EXECUTABLE could not be executed (e.g. cross compiling)
# try to detect which version we found. This is not too good.
if(Ruby_EXECUTABLE AND NOT Ruby_VERSION_MAJOR)
# by default assume 1.8.0
set(Ruby_VERSION_MAJOR 1)
set(Ruby_VERSION_MINOR 8)
set(Ruby_VERSION_PATCH 0)
# check whether we found 1.9.x
if(${Ruby_EXECUTABLE} MATCHES "ruby1\\.?9")
set(Ruby_VERSION_MAJOR 1)
set(Ruby_VERSION_MINOR 9)
endif()
# check whether we found 2.0.x
if(${Ruby_EXECUTABLE} MATCHES "ruby2\\.?0")
set(Ruby_VERSION_MAJOR 2)
set(Ruby_VERSION_MINOR 0)
endif()
# check whether we found 2.1.x
if(${Ruby_EXECUTABLE} MATCHES "ruby2\\.?1")
set(Ruby_VERSION_MAJOR 2)
set(Ruby_VERSION_MINOR 1)
endif()
# check whether we found 2.2.x
if(${Ruby_EXECUTABLE} MATCHES "ruby2\\.?2")
set(Ruby_VERSION_MAJOR 2)
set(Ruby_VERSION_MINOR 2)
endif()
# check whether we found 2.3.x
if(${Ruby_EXECUTABLE} MATCHES "ruby2\\.?3")
set(Ruby_VERSION_MAJOR 2)
set(Ruby_VERSION_MINOR 3)
endif()
# check whether we found 2.4.x
if(${Ruby_EXECUTABLE} MATCHES "ruby2\\.?4")
set(Ruby_VERSION_MAJOR 2)
set(Ruby_VERSION_MINOR 4)
endif()
# check whether we found 2.5.x
if(${Ruby_EXECUTABLE} MATCHES "ruby2\\.?5")
set(Ruby_VERSION_MAJOR 2)
set(Ruby_VERSION_MINOR 5)
endif()
# check whether we found 2.6.x
if(${Ruby_EXECUTABLE} MATCHES "ruby2\\.?6")
set(Ruby_VERSION_MAJOR 2)
set(Ruby_VERSION_MINOR 6)
endif()
# check whether we found 2.7.x
if(${Ruby_EXECUTABLE} MATCHES "ruby2\\.?7")
set(Ruby_VERSION_MAJOR 2)
set(Ruby_VERSION_MINOR 7)
endif()
endif()
if(Ruby_VERSION_MAJOR)
set(Ruby_VERSION "${Ruby_VERSION_MAJOR}.${Ruby_VERSION_MINOR}.${Ruby_VERSION_PATCH}")
set(_Ruby_VERSION_SHORT "${Ruby_VERSION_MAJOR}.${Ruby_VERSION_MINOR}")
set(_Ruby_VERSION_SHORT_NODOT "${Ruby_VERSION_MAJOR}${Ruby_VERSION_MINOR}")
set(_Ruby_NODOT_VERSION "${Ruby_VERSION_MAJOR}${Ruby_VERSION_MINOR}${Ruby_VERSION_PATCH}")
endif()
# FIXME: Currently we require both the interpreter and development components to be found
# in order to use either. See issue #20474.
find_path(Ruby_INCLUDE_DIR
NAMES ruby.h
HINTS
${Ruby_HDR_DIR}
${Ruby_ARCH_DIR}
/usr/lib/ruby/${_Ruby_VERSION_SHORT}/i586-linux-gnu/
)
set(Ruby_INCLUDE_DIRS ${Ruby_INCLUDE_DIR})
# if ruby > 1.8 is required or if ruby > 1.8 was found, search for the config.h dir
if( Ruby_FIND_VERSION VERSION_GREATER_EQUAL "1.9" OR Ruby_VERSION VERSION_GREATER_EQUAL "1.9" OR Ruby_HDR_DIR)
find_path(Ruby_CONFIG_INCLUDE_DIR
NAMES ruby/config.h config.h
HINTS
${Ruby_HDR_DIR}/${Ruby_ARCH}
${Ruby_ARCH_DIR}
${Ruby_ARCHHDR_DIR}
)
set(Ruby_INCLUDE_DIRS ${Ruby_INCLUDE_DIRS} ${Ruby_CONFIG_INCLUDE_DIR} )
endif()
# Determine the list of possible names for the ruby library
set(_Ruby_POSSIBLE_LIB_NAMES ruby ruby-static ruby${_Ruby_VERSION_SHORT} ruby${_Ruby_VERSION_SHORT_NODOT} ruby-${_Ruby_VERSION_SHORT} ruby-${Ruby_VERSION})
if(WIN32)
if(MSVC_TOOLSET_VERSION)
set(_Ruby_MSVC_RUNTIME "${MSVC_TOOLSET_VERSION}")
else()
set(_Ruby_MSVC_RUNTIME "")
endif()
set(_Ruby_ARCH_PREFIX "")
if(CMAKE_SIZEOF_VOID_P EQUAL 8)
set(_Ruby_ARCH_PREFIX "x64-")
endif()
list(APPEND _Ruby_POSSIBLE_LIB_NAMES
"${_Ruby_ARCH_PREFIX}msvcr${_Ruby_MSVC_RUNTIME}-ruby${_Ruby_NODOT_VERSION}"
"${_Ruby_ARCH_PREFIX}msvcr${_Ruby_MSVC_RUNTIME}-ruby${_Ruby_NODOT_VERSION}-static"
"${_Ruby_ARCH_PREFIX}msvcrt-ruby${_Ruby_NODOT_VERSION}"
"${_Ruby_ARCH_PREFIX}msvcrt-ruby${_Ruby_NODOT_VERSION}-static" )
endif()
find_library(Ruby_LIBRARY NAMES ${_Ruby_POSSIBLE_LIB_NAMES} HINTS ${Ruby_POSSIBLE_LIB_DIR} )
set(_Ruby_REQUIRED_VARS Ruby_EXECUTABLE Ruby_INCLUDE_DIR Ruby_LIBRARY)
if(_Ruby_VERSION_SHORT_NODOT GREATER 18)
list(APPEND _Ruby_REQUIRED_VARS Ruby_CONFIG_INCLUDE_DIR)
endif()
if(_Ruby_DEBUG_OUTPUT)
message(STATUS "--------FindRuby.cmake debug------------")
message(STATUS "_Ruby_POSSIBLE_EXECUTABLE_NAMES: ${_Ruby_POSSIBLE_EXECUTABLE_NAMES}")
message(STATUS "_Ruby_POSSIBLE_LIB_NAMES: ${_Ruby_POSSIBLE_LIB_NAMES}")
message(STATUS "Ruby_ARCH_DIR: ${Ruby_ARCH_DIR}")
message(STATUS "Ruby_HDR_DIR: ${Ruby_HDR_DIR}")
message(STATUS "Ruby_POSSIBLE_LIB_DIR: ${Ruby_POSSIBLE_LIB_DIR}")
message(STATUS "Found Ruby_VERSION: \"${Ruby_VERSION}\" , short: \"${_Ruby_VERSION_SHORT}\", nodot: \"${_Ruby_VERSION_SHORT_NODOT}\"")
message(STATUS "_Ruby_REQUIRED_VARS: ${_Ruby_REQUIRED_VARS}")
message(STATUS "Ruby_EXECUTABLE: ${Ruby_EXECUTABLE}")
message(STATUS "Ruby_LIBRARY: ${Ruby_LIBRARY}")
message(STATUS "Ruby_INCLUDE_DIR: ${Ruby_INCLUDE_DIR}")
message(STATUS "Ruby_CONFIG_INCLUDE_DIR: ${Ruby_CONFIG_INCLUDE_DIR}")
message(STATUS "--------------------")
endif()
include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(Ruby REQUIRED_VARS ${_Ruby_REQUIRED_VARS}
VERSION_VAR Ruby_VERSION )
if(Ruby_FOUND)
set(Ruby_LIBRARIES ${Ruby_LIBRARY})
endif()
mark_as_advanced(
Ruby_EXECUTABLE
Ruby_LIBRARY
Ruby_INCLUDE_DIR
Ruby_CONFIG_INCLUDE_DIR
)
# Set some variables for compatibility with previous version of this file (no need to provide a CamelCase version of that...)
set(RUBY_POSSIBLE_LIB_PATH ${Ruby_POSSIBLE_LIB_DIR})
set(RUBY_RUBY_LIB_PATH ${Ruby_RUBY_LIB_DIR})
set(RUBY_INCLUDE_PATH ${Ruby_INCLUDE_DIRS})
# Backwards compatibility
# Define upper case versions of output variables
foreach(Camel
Ruby_EXECUTABLE
Ruby_INCLUDE_DIRS
Ruby_LIBRARY
Ruby_VERSION
Ruby_VERSION_MAJOR
Ruby_VERSION_MINOR
Ruby_VERSION_PATCH
Ruby_INCLUDE_PATH
Ruby_ARCH_DIR
Ruby_ARCH
Ruby_HDR_DIR
Ruby_ARCHHDR_DIR
Ruby_POSSIBLE_LIB_DIR
Ruby_RUBY_LIB_DIR
Ruby_SITEARCH_DIR
Ruby_SITELIB_DIR
Ruby_HAS_VENDOR_RUBY
Ruby_VENDORARCH_DIR
)
string(TOUPPER ${Camel} UPPER)
set(${UPPER} ${${Camel}})
endforeach()
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