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# Locate Lua executable, library, and headers.
# This module supersedes FindLua50 and FindLua51 (and also supports
# Lua-5.2) by using the
# lua -v command to determine version.
# This module defines
# LUA_FOUND, if false, do not try to link to Lua
# LUA_EXECUTABLE, full path of Lua executable used to determine LUA_VERSION
# LUA_VERSION
# LUA_LIBRARIES
# LUA_INCLUDE_DIR, where to find lua.h
#
# Note that the expected include convention is
# #include "lua.h"
# and not
# #include <lua/lua.h>
# This is because, the lua location is not standardized and may exist
# in locations other than lua/
#=============================================================================
# CMake - Cross Platform Makefile Generator
# Copyright 2000-2011 Kitware, Inc., Insight Software Consortium
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# * Neither the names of Kitware, Inc., the Insight Software Consortium,
# nor the names of their contributors may be used to endorse or promote
# products derived from this software without specific prior written
# permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# ------------------------------------------------------------------------------
# The above copyright and license notice applies to distributions of
# CMake in source and binary form. Some source files contain additional
# notices of original copyright by their contributors; see each source
# for details. Third-party software packages supplied with CMake under
# compatible licenses provide their own copyright notices documented in
# corresponding subdirectories.
#
# ------------------------------------------------------------------------------
#
# CMake was initially developed by Kitware with the following sponsorship:
#
# * National Library of Medicine at the National Institutes of Health
# as part of the Insight Segmentation and Registration Toolkit (ITK).
#
# * US National Labs (Los Alamos, Livermore, Sandia) ASC Parallel
# Visualization Initiative.
#
# * National Alliance for Medical Image Computing (NAMIC) is funded by the
# National Institutes of Health through the NIH Roadmap for Medical Research,
# Grant U54 EB005149.
#
# * Kitware, Inc.
# No PATHS or anything else to make sure to not find Linux version
# on Wine.
find_program(LUA_EXECUTABLE lua
)
if(LUA_EXECUTABLE)
#N.B. lua -v outputs results to stderr (at least for lua-5.1) so
#look for version string results in both stderr and stdout.
execute_process(
COMMAND ${LUA_EXECUTABLE} -v
RESULT_VARIABLE LUA_ERR
OUTPUT_VARIABLE LUA_VERSION_STRING
ERROR_VARIABLE LUA_VERSION_STRING
OUTPUT_STRIP_TRAILING_WHITESPACE
ERROR_STRIP_TRAILING_WHITESPACE
)
if(LUA_ERR)
message(WARNING "Lua executable broken. Could not determine version string without an error")
set(LUA_EXECUTABLE OFF CACHE BOOL "Lua executable location" FORCE)
endif(LUA_ERR)
endif(LUA_EXECUTABLE)
if(LUA_EXECUTABLE)
string(REGEX MATCH "5\\.[0-9]" LUA_VERSION "${LUA_VERSION_STRING}")
message(STATUS "LUA_VERSION = ${LUA_VERSION}")
string(REGEX MATCH "[0-9]$" LUA_VERSION_SUFFIX "${LUA_VERSION}")
set(LUA_INCLUDE_SUFFIX_VERSIONS include/lua5${LUA_VERSION_SUFFIX} include/lua5.${LUA_VERSION_SUFFIX})
set(LUA_LIBRARY_NAME_VERSIONS lua5${LUA_VERSION_SUFFIX} lua5.${LUA_VERSION_SUFFIX} lua-5.${LUA_VERSION_SUFFIX})
if(NOT LUA_VERSION MATCHES "5\\.[0-9]")
message(WARNING "Could not parse Lua version string")
set(LUA_EXECUTABLE OFF CACHE BOOL "Lua executable location" FORCE)
endif(NOT LUA_VERSION MATCHES "5\\.[0-9]")
endif(LUA_EXECUTABLE)
if(LUA_EXECUTABLE)
find_path(LUA_INCLUDE_DIR lua.h
HINTS
$ENV{LUA_DIR}
PATH_SUFFIXES ${LUA_INCLUDE_SUFFIX_VERSIONS} include/lua include
PATHS
~/Library/Frameworks
/Library/Frameworks
/usr/local
/usr
/sw # Fink
/opt/local # DarwinPorts
/opt/csw # Blastwave
/opt
)
message(STATUS "LUA_INCLUDE_DIR = ${LUA_INCLUDE_DIR}")
find_library(LUA_LIBRARY
NAMES ${LUA_LIBRARY_NAME_VERSIONS} lua
HINTS
$ENV{LUA_DIR}
PATH_SUFFIXES lib64 lib
PATHS
~/Library/Frameworks
/Library/Frameworks
/usr/local
/usr
/sw
/opt/local
/opt/csw
/opt
)
if(LUA_LIBRARY)
# include the math library for Unix
if(UNIX AND NOT APPLE)
find_library(LUA_MATH_LIBRARY m)
set( LUA_LIBRARIES "${LUA_LIBRARY};${LUA_MATH_LIBRARY}" CACHE STRING "Lua Libraries")
# For Windows and Mac, don't need to explicitly include the math library
else(UNIX AND NOT APPLE)
set( LUA_LIBRARIES "${LUA_LIBRARY}" CACHE STRING "Lua Libraries")
endif(UNIX AND NOT APPLE)
endif(LUA_LIBRARY)
message(STATUS "LUA_LIBRARIES = ${LUA_LIBRARIES}")
endif(LUA_EXECUTABLE)
include(FindPackageHandleStandardArgs)
# handle the QUIET and REQUIRED arguments and set LUA_FOUND to TRUE if
# all listed variables are TRUE
find_package_handle_standard_args(Lua DEFAULT_MSG LUA_EXECUTABLE LUA_VERSION LUA_LIBRARIES LUA_INCLUDE_DIR)
mark_as_advanced(LUA_INCLUDE_DIR LUA_LIBRARIES LUA_LIBRARY LUA_MATH_LIBRARY)
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