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# - Copy/parse lua source files as a custom target
#
# include(LuaTargets)
# add_lua_target(<target_name> <directory to copy to> [<luafile> <luafile>])
# Relative paths for the destination directory are considered with
# with respect to CMAKE_CURRENT_BINARY_DIR
#
# install_lua_target(<target_name> [arguments to INSTALL(PROGRAMS ...) ])
#
# Set this variable to specify location of luac, if it is not a target:
# LUA_TARGET_LUAC_EXECUTABLE
#
# Requires CMake 2.6 or newer (uses the 'function' command)
#
# Original Author:
# 2009-2010 Ryan Pavlik <rpavlik@iastate.edu> <abiryan@ryand.net>
# http://academic.cleardefinition.com
# Iowa State University HCI Graduate Program/VRAC
#
# Copyright Iowa State University 2009-2010.
# Distributed under the Boost Software License, Version 1.0.
# (See accompanying file LICENSE_1_0.txt or copy at
# http://www.boost.org/LICENSE_1_0.txt)
if(__add_lua)
return()
endif()
set(__add_lua YES)
include(FileCopyTargets)
function(add_lua_target _target _dest)
if(NOT ARGN)
message(WARNING
"In add_lua_target call for target ${_target}, no source files were specified!")
return()
endif()
if(NOT LUA_TARGET_LUAC_EXECUTABLE)
if(TARGET luac)
set(LUA_TARGET_LUAC_EXECUTABLE luac)
mark_as_advanced(LUA_TARGET_LUAC_EXECUTABLE)
else()
find_program(LUA_TARGET_LUAC_EXECUTABLE NAMES luac)
endif()
endif()
if(NOT LUA_TARGET_LUAC_EXECUTABLE)
message(FATAL_ERROR
"Can't find luac: please give LUA_TARGET_LUAC_EXECUTABLE a useful value - currently ${LUA_TARGET_LUAC_EXECUTABLE}")
endif()
mark_as_advanced(LUA_TARGET_LUAC_EXECUTABLE)
set(ALLFILES)
set(SOURCES)
foreach(fn ${ARGN})
# Produce an absolute path to the input file
if(IS_ABSOLUTE "${fn}")
get_filename_component(fullpath "${fn}" ABSOLUTE)
get_filename_component(fn "${fn}" NAME)
else()
get_filename_component(fullpath
"${CMAKE_CURRENT_SOURCE_DIR}/${fn}"
ABSOLUTE)
endif()
# Clean up output file name
get_filename_component(absout "${_dest}/${fn}" ABSOLUTE)
add_custom_command(OUTPUT "${absout}"
COMMAND
${CMAKE_COMMAND}
ARGS -E make_directory "${_dest}"
COMMAND
${CMAKE_COMMAND}
ARGS -E copy "${fullpath}" "${_dest}"
COMMAND
"${LUA_TARGET_LUAC_EXECUTABLE}"
ARGS -p "${fullpath}"
MAIN_DEPENDENCY "${fullpath}"
VERBATIM
COMMENT "Copying ${fn} to ${absout} and parsing...")
list(APPEND SOURCES "${fullpath}")
list(APPEND ALLFILES "${absout}")
endforeach()
# Custom target depending on all the file copy commands
add_custom_target(${_target}
SOURCES ${SOURCES}
DEPENDS ${ALLFILES})
if(TARGET "${LUA_TARGET_LUAC_EXECUTABLE}")
get_property(_luac_imported
TARGET
"${LUA_TARGET_LUAC_EXECUTABLE}"
PROPERTY
IMPORTED)
if(NOT _luac_imported)
add_dependencies(${_target} ${LUA_TARGET_LUAC_EXECUTABLE})
endif()
endif()
set_property(TARGET ${_target} PROPERTY FILE_COPY_TARGET YES)
endfunction()
function(install_lua_target)
install_file_copy_target(${ARGN})
endfunction()
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