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# - Find Ruby
# This module finds if Ruby is installed and determines where the include files
# and libraries are. It also determines what the name of the library is. This
# code sets the following variables:
#
# RUBY_LIBRARY = full path+file to the ruby library
# RUBY_INCLUDE_PATH = path to where ruby.h can be found
# RUBY_EXECUTABLE = full path+file to the ruby binary
# RUBY_FOUND = Ruby was found under system.
# Copyright (c) 2006,2007 Laurent Montel, <montel@kde.org>
#
# Redistribution and use is allowed according to the terms of the BSD license.
# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
if(RUBY_LIBRARY AND RUBY_INCLUDE_PATH)
# Already in cache, be silent
SET(RUBY_FOUND TRUE)
endif (RUBY_LIBRARY AND RUBY_INCLUDE_PATH)
# 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"@:>@)'`
FIND_PROGRAM(RUBY_EXECUTABLE NAMES ruby ruby1.8 ruby18 ruby1.9 ruby19)
IF(RUBY_EXECUTABLE)
EXECUTE_PROCESS(COMMAND ${RUBY_EXECUTABLE} -r rbconfig -e "puts Config::CONFIG['archdir'] || Config::CONFIG['rubyincludedir']"
OUTPUT_VARIABLE RUBY_ARCH_DIR)
EXECUTE_PROCESS(COMMAND ${RUBY_EXECUTABLE} -r rbconfig -e "puts Config::CONFIG['libdir']"
OUTPUT_VARIABLE RUBY_POSSIBLE_LIB_PATH)
EXECUTE_PROCESS(COMMAND ${RUBY_EXECUTABLE} -r rbconfig -e "puts Config::CONFIG['rubylibdir']"
OUTPUT_VARIABLE RUBY_RUBY_LIB_PATH)
EXECUTE_PROCESS(COMMAND ${RUBY_EXECUTABLE} -r rbconfig -e "puts Config::CONFIG['ruby_version']"
OUTPUT_VARIABLE RUBY_VERSION)
EXECUTE_PROCESS(COMMAND ${RUBY_EXECUTABLE} -r rbconfig -e "puts Config::CONFIG['sitelibdir']"
OUTPUT_VARIABLE RUBY_SITE_LIB_DIR)
EXECUTE_PROCESS(COMMAND ${RUBY_EXECUTABLE} -r rbconfig -e "puts Config::CONFIG['sitearchdir']"
OUTPUT_VARIABLE RUBY_SITE_ARCH_DIR)
# remove the new lines from the output by replacing them with empty strings
STRING(REPLACE "\n" "" RUBY_ARCH_DIR "${RUBY_ARCH_DIR}")
STRING(REPLACE "\n" "" RUBY_POSSIBLE_LIB_PATH "${RUBY_POSSIBLE_LIB_PATH}")
STRING(REPLACE "\n" "" RUBY_RUBY_LIB_PATH "${RUBY_RUBY_LIB_PATH}")
STRING(REPLACE "\n" "" RUBY_VERSION "${RUBY_VERSION}")
STRING(REPLACE "." "" RUBY_VERSION_NODOT "${RUBY_VERSION}")
STRING(REPLACE "\n" "" RUBY_SITE_LIB_DIR "${RUBY_SITE_LIB_DIR}")
STRING(REPLACE "\n" "" RUBY_SITE_ARCH_DIR "${RUBY_SITE_ARCH_DIR}")
FIND_PATH(RUBY_INCLUDE_PATH
NAMES ruby.h
PATHS ${RUBY_ARCH_DIR} /usr/include/ruby-${RUBY_VERSION}
)
FIND_LIBRARY(RUBY_LIBRARY
NAMES ruby${RUBY_VERSION} ruby msvcrt-ruby${RUBY_VERSION_NODOT}
PATHS ${RUBY_POSSIBLE_LIB_PATH} ${RUBY_RUBY_LIB_PATH}
)
if(RUBY_LIBRARY AND RUBY_INCLUDE_PATH)
SET(RUBY_FOUND TRUE)
endif (RUBY_LIBRARY AND RUBY_INCLUDE_PATH)
MARK_AS_ADVANCED(
RUBY_EXECUTABLE
RUBY_LIBRARY
RUBY_INCLUDE_PATH
)
ENDIF(RUBY_EXECUTABLE)
IF(RUBY_FOUND)
IF(NOT RUBY_FIND_QUIETLY)
MESSAGE(STATUS "Ruby found: ${RUBY_LIBRARY}")
ENDIF(NOT RUBY_FIND_QUIETLY)
ELSE(RUBY_FOUND)
IF(RUBY_FIND_REQUIRED)
MESSAGE(FATAL_ERROR "Could not find Ruby")
ENDIF(RUBY_FIND_REQUIRED)
ENDIF(RUBY_FOUND)
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