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# - try to find Java's IDLJ Interface Definition Language compiler.
#
# Ideally used with CMake 2.8.5 or newer for Java support using FindJava.cmake
# and UseJava.cmake
#
# Variables:
# Java_IDLJ_COMMAND, executable for idlj
# IDLJ_FOUND, If false, do not try to use this
#
# Function:
# java_idlj(varname idlfile [extra idlj args]) - Generates
# the Java source files from the IDL file you indicate, and
# appends filenames suitable to add to a add_jar() call to the
# variable you specified.
#
# Because the files generated from an IDL file are not entirely predictable,
# java_idlj runs idlj in the cmake step, rather than the build step, and triggers
# a CMake re-run when an idl file is modified. Already up-to-date generated source
# is not re-generated, however.
#
# Files are generated in a directory created specifically for
# the particular IDL file and the particular call, in the build directory -
# there should be no worries about overwriting files or picking up too much
# with the wildcard.
#
# You may wish to add the IDL file to your list of sources if you want it
# to appear in your IDE, but it is not necessary.
#
# Original Author:
# 2012 Rylie Pavlik <rylie@ryliepavlik.com>
# https://ryliepavlik.com/
# Iowa State University HCI Graduate Program/VRAC
#
# Copyright 2012, Iowa State University
#
# 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)
#
# SPDX-License-Identifier: BSL-1.0
if(NOT JAVA_FOUND)
find_package(Java QUIET)
endif()
if(JAVA_FOUND)
get_filename_component(JAVA_BIN_DIR "${Java_JAVAC_EXECUTABLE}" PATH)
find_program(Java_IDLJ_COMMAND
idlj
HINTS
${JAVA_BIN_DIR}
)
endif()
# handle the QUIETLY and REQUIRED arguments and set xxx_FOUND to TRUE if
# all listed variables are TRUE
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(IDLJ
DEFAULT_MSG
Java_IDLJ_COMMAND
JAVA_FOUND)
if(IDLJ_FOUND)
function(java_idlj _varname _idlfile)
# Get some unique value we can use in a directory name
# TODO would be better to somehow munge the full path relative to CMAKE_CURRENT_SOURCE_DIR
# in case somebody has multiple idl files with the same name
get_filename_component(_idl_name "${_idlfile}" NAME_WE)
get_filename_component(_idl_abs "${_idlfile}" ABSOLUTE)
# Compute directory name and stamp filename
set(outdir "${CMAKE_CURRENT_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/idlj/${_idl_name}.dir")
set(stampfile "${CMAKE_CURRENT_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/idlj/${_idl_name}.stamp")
# Force re-cmake if idl file changes
configure_file("${_idl_abs}" "${stampfile}" COPY_ONLY)
if((NOT EXISTS "${outdir}") OR ("${_idl_abs}" IS_NEWER_THAN "${outdir}"))
file(REMOVE_RECURSE "${outdir}")
message(STATUS "Processing ${_idlfile} with Java's idlj")
execute_process(COMMAND
"${Java_IDLJ_COMMAND}" -fclient -fallTIE -td "${outdir}" ${ARGN} "${_idlfile}"
WORKING_DIRECTORY
"${CMAKE_CURRENT_SOURCE_DIR}")
endif()
file(GLOB_RECURSE _idl_output "${outdir}/*")
set(${_varname} ${_idl_output} PARENT_SCOPE)
# Clean up after ourselves on make clean
set_property(DIRECTORY APPEND PROPERTY ADDITIONAL_MAKE_CLEAN_FILES "${outdir}" "${stampfile}")
endfunction()
endif()
mark_as_advanced(Java_IDLJ_COMMAND)
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