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CMake/Modules/FindRuby.cmake
Alex Neundorf a9bca052f8 FindRuby.cmake: add more debug output 
Alex
2012-01-05 21:58:49 +01:00

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# - Find Ruby
# This module finds if Ruby is installed and determines where the include files
# and libraries are. Ruby 1.8 and 1.9 are supported.
#
# The minimum required version of Ruby can be specified using the
# standard syntax, e.g. FIND_PACKAGE(Ruby 1.8)
#
# It also determines what the name of the library is. This
# code sets the following variables:
#
# RUBY_EXECUTABLE = full path to the ruby binary
# RUBY_INCLUDE_DIRS = include dirs to be used when using the ruby library
# RUBY_LIBRARY = full path to the ruby library
# RUBY_VERSION = the version of ruby which was found, e.g. "1.8.7"
# RUBY_FOUND = set to true if ruby ws found successfully
#
# RUBY_INCLUDE_PATH = same as RUBY_INCLUDE_DIRS, only provided for compatibility reasons, don't use it
#=============================================================================
# Copyright 2004-2009 Kitware, Inc.
# Copyright 2008-2009 Alexander Neundorf <neundorf@kde.org>
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================
# (To distribute this file outside of CMake, substitute the full
# License text for the above reference.)
# 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=`$RUBY -r rbconfig -e 'printf("%s",Config::CONFIG@<:@"LIBRUBYARG_SHARED"@:>@)'`
# uncomment the following line to get debug output for this file
# SET(_RUBY_DEBUG_OUTPUT TRUE)
# Determine the list of possible names of the ruby executable depending
# on which version of ruby is required
SET(_RUBY_POSSIBLE_EXECUTABLE_NAMES ruby)
# if 1.9 is required, don't look for ruby18 and ruby1.8, default to version 1.8
IF(Ruby_FIND_VERSION_MAJOR AND Ruby_FIND_VERSION_MINOR)
SET(Ruby_FIND_VERSION_SHORT_NODOT "${Ruby_FIND_VERSION_MAJOR}${RUBY_FIND_VERSION_MINOR}")
ELSE(Ruby_FIND_VERSION_MAJOR AND Ruby_FIND_VERSION_MINOR)
SET(Ruby_FIND_VERSION_SHORT_NODOT "18")
ENDIF(Ruby_FIND_VERSION_MAJOR AND Ruby_FIND_VERSION_MINOR)
SET(_RUBY_POSSIBLE_EXECUTABLE_NAMES ${_RUBY_POSSIBLE_EXECUTABLE_NAMES} ruby1.9 ruby19)
# if we want a version below 1.9, also look for ruby 1.8
IF("${Ruby_FIND_VERSION_SHORT_NODOT}" VERSION_LESS "19")
SET(_RUBY_POSSIBLE_EXECUTABLE_NAMES ${_RUBY_POSSIBLE_EXECUTABLE_NAMES} ruby1.8 ruby18)
ENDIF("${Ruby_FIND_VERSION_SHORT_NODOT}" VERSION_LESS "19")
FIND_PROGRAM(RUBY_EXECUTABLE NAMES ${_RUBY_POSSIBLE_EXECUTABLE_NAMES})
IF(RUBY_EXECUTABLE AND NOT RUBY_VERSION_MAJOR)
# query the ruby version
EXECUTE_PROCESS(COMMAND ${RUBY_EXECUTABLE} -r rbconfig -e "print Config::CONFIG['MAJOR']"
OUTPUT_VARIABLE RUBY_VERSION_MAJOR)
EXECUTE_PROCESS(COMMAND ${RUBY_EXECUTABLE} -r rbconfig -e "print Config::CONFIG['MINOR']"
OUTPUT_VARIABLE RUBY_VERSION_MINOR)
EXECUTE_PROCESS(COMMAND ${RUBY_EXECUTABLE} -r rbconfig -e "print Config::CONFIG['TEENY']"
OUTPUT_VARIABLE RUBY_VERSION_PATCH)
# query the different directories
EXECUTE_PROCESS(COMMAND ${RUBY_EXECUTABLE} -r rbconfig -e "print Config::CONFIG['archdir']"
OUTPUT_VARIABLE RUBY_ARCH_DIR)
EXECUTE_PROCESS(COMMAND ${RUBY_EXECUTABLE} -r rbconfig -e "print Config::CONFIG['arch']"
OUTPUT_VARIABLE RUBY_ARCH)
EXECUTE_PROCESS(COMMAND ${RUBY_EXECUTABLE} -r rbconfig -e "print Config::CONFIG['rubyhdrdir']"
OUTPUT_VARIABLE RUBY_HDR_DIR)
EXECUTE_PROCESS(COMMAND ${RUBY_EXECUTABLE} -r rbconfig -e "print Config::CONFIG['libdir']"
OUTPUT_VARIABLE RUBY_POSSIBLE_LIB_DIR)
EXECUTE_PROCESS(COMMAND ${RUBY_EXECUTABLE} -r rbconfig -e "print Config::CONFIG['rubylibdir']"
OUTPUT_VARIABLE RUBY_RUBY_LIB_DIR)
# site_ruby
EXECUTE_PROCESS(COMMAND ${RUBY_EXECUTABLE} -r rbconfig -e "print Config::CONFIG['sitearchdir']"
OUTPUT_VARIABLE RUBY_SITEARCH_DIR)
EXECUTE_PROCESS(COMMAND ${RUBY_EXECUTABLE} -r rbconfig -e "print Config::CONFIG['sitelibdir']"
OUTPUT_VARIABLE 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)
EXECUTE_PROCESS(COMMAND ${RUBY_EXECUTABLE} -r rbconfig -e "print Config::CONFIG['vendorlibdir']"
OUTPUT_VARIABLE RUBY_VENDORLIB_DIR)
EXECUTE_PROCESS(COMMAND ${RUBY_EXECUTABLE} -r rbconfig -e "print Config::CONFIG['vendorarchdir']"
OUTPUT_VARIABLE RUBY_VENDORARCH_DIR)
ENDIF(RUBY_HAS_VENDOR_RUBY)
# 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_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 ${RUBY_VENDORLIB_DIR} CACHE PATH "The Ruby vendor lib dir" FORCE)
MARK_AS_ADVANCED(
RUBY_ARCH_DIR
RUBY_ARCH
RUBY_HDR_DIR
RUBY_POSSIBLE_LIB_DIR
RUBY_RUBY_LIB_DIR
RUBY_SITEARCH_DIR
RUBY_SITELIB_DIR
RUBY_HAS_VENDOR_RUBY
RUBY_VENDORARCH_DIR
RUBY_VENDORLIB_DIR
RUBY_VERSION_MAJOR
RUBY_VERSION_MINOR
RUBY_VERSION_PATCH
)
ENDIF(RUBY_EXECUTABLE AND NOT RUBY_VERSION_MAJOR)
# In case RUBY_EXECUTABLE could not be executed (e.g. cross compiling)
# try to detect which version we found. This is not too good.
IF(NOT RUBY_VERSION_MAJOR)
# by default assume 1.8.0
SET(RUBY_VERSION_MAJOR 1)
SET(RUBY_VERSION_MINOR 8)
SET(RUBY_VERSION_PATCH 0)
# check whether we found 1.9.x
IF(${RUBY_EXECUTABLE} MATCHES "ruby1.?9" OR RUBY_HDR_DIR)
SET(RUBY_VERSION_MAJOR 1)
SET(RUBY_VERSION_MINOR 9)
ENDIF(${RUBY_EXECUTABLE} MATCHES "ruby1.?9" OR RUBY_HDR_DIR)
ENDIF(NOT RUBY_VERSION_MAJOR)
SET(RUBY_VERSION "${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}")
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_SHORT_NODOT} GREATER 18 OR ${_RUBY_VERSION_SHORT_NODOT} GREATER 18 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}
)
SET(RUBY_INCLUDE_DIRS ${RUBY_INCLUDE_DIRS} ${RUBY_CONFIG_INCLUDE_DIR} )
ENDIF( ${Ruby_FIND_VERSION_SHORT_NODOT} GREATER 18 OR ${_RUBY_VERSION_SHORT_NODOT} GREATER 18 OR RUBY_HDR_DIR)
# Determine the list of possible names for the ruby library
SET(_RUBY_POSSIBLE_LIB_NAMES ruby ruby-static ruby${_RUBY_VERSION_SHORT} ruby${_RUBY_VERSION_SHORT_NODOT} ruby-${_RUBY_VERSION_SHORT} ruby-${RUBY_VERSION})
IF(WIN32)
SET( _RUBY_MSVC_RUNTIME "" )
IF( MSVC60 )
SET( _RUBY_MSVC_RUNTIME "60" )
ENDIF( MSVC60 )
IF( MSVC70 )
SET( _RUBY_MSVC_RUNTIME "70" )
ENDIF( MSVC70 )
IF( MSVC71 )
SET( _RUBY_MSVC_RUNTIME "71" )
ENDIF( MSVC71 )
IF( MSVC80 )
SET( _RUBY_MSVC_RUNTIME "80" )
ENDIF( MSVC80 )
IF( MSVC90 )
SET( _RUBY_MSVC_RUNTIME "90" )
ENDIF( MSVC90 )
LIST(APPEND _RUBY_POSSIBLE_LIB_NAMES
"msvcr${_RUBY_MSVC_RUNTIME}-ruby${_RUBY_NODOT_VERSION}"
"msvcr${_RUBY_MSVC_RUNTIME}-ruby${_RUBY_NODOT_VERSION}-static"
"msvcrt-ruby${_RUBY_NODOT_VERSION}"
"msvcrt-ruby${_RUBY_NODOT_VERSION}-static" )
ENDIF(WIN32)
FIND_LIBRARY(RUBY_LIBRARY NAMES ${_RUBY_POSSIBLE_LIB_NAMES} HINTS ${RUBY_POSSIBLE_LIB_DIR} )
INCLUDE(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
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(_RUBY_VERSION_SHORT_NODOT GREATER 18)
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(_RUBY_DEBUG_OUTPUT)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(Ruby REQUIRED_VARS ${_RUBY_REQUIRED_VARS}
VERSION_VAR RUBY_VERSION )
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
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})
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