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# Adds a target that creates a datafile archive containing all files under selected directory tree. For example:
#
# add_datafile(
# shatter
# DIRECTORY shatter
# OUTPUT shatter.dat
# )
#
# Will create 'shatter.dat' in the respective binary directory containing all files in 'shatter' subdirectory of current
# source directory. DIRECTORY option's argument defaults to the target name. OUTPUT option's argument defaults to the
# target name with ".dat" suffix.
#
# To create the archive Datafile.exe is used, so for non-Windows platforms an emulator that can run it is needed.
function(add_datafile)
set(FUNC_DATAFILE_TARGET ${ARGV0})
cmake_parse_arguments(
PARSE_ARGV 1
FUNC_DATAFILE
""
"DIRECTORY;OUTPUT"
""
)
if(NOT DEFINED FUNC_DATAFILE_DIRECTORY)
set(FUNC_DATAFILE_DIRECTORY ${FUNC_DATAFILE_TARGET})
endif()
if(NOT DEFINED FUNC_DATAFILE_OUTPUT)
set(FUNC_DATAFILE_OUTPUT "${FUNC_DATAFILE_TARGET}.dat")
endif()
cmake_path(ABSOLUTE_PATH FUNC_DATAFILE_DIRECTORY NORMALIZE BASE_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
cmake_path(ABSOLUTE_PATH FUNC_DATAFILE_OUTPUT NORMALIZE BASE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
if(CMAKE_HOST_SYSTEM_NAME MATCHES Windows)
set(FUNC_DATAFILE_VAR PATH)
set(FUNC_DATAFILE_PATHS $ENV{PATH})
list(PREPEND FUNC_DATAFILE_PATHS $<TARGET_FILE_DIR:Zlib::zlib>)
else()
set(FUNC_DATAFILE_VAR WINEPATH)
set(FUNC_DATAFILE_PATHS $ENV{WINEPATH})
list(PREPEND FUNC_DATAFILE_PATHS $<TARGET_FILE_DIR:Zlib::zlib>)
list(PREPEND FUNC_DATAFILE_PATHS $<SHELL_PATH:${CMAKE_FIND_ROOT_PATH}/bin>)
endif()
add_custom_command(
OUTPUT ${FUNC_DATAFILE_OUTPUT}
DEPENDS ${FUNC_DATAFILE_DIRECTORY}
COMMAND
${CMAKE_COMMAND} -E env "${FUNC_DATAFILE_VAR}='${FUNC_DATAFILE_PATHS}'"
${CMAKE_CORSSCOMPILING_EMULATOR}
$<TARGET_FILE:Datafile> $<SHELL_PATH:${FUNC_DATAFILE_OUTPUT}> -mak
COMMENT "Creating datafile ${FUNC_DATAFILE_TARGET}"
WORKING_DIRECTORY ${FUNC_DATAFILE_DIRECTORY}
)
add_custom_target(${FUNC_DATAFILE_TARGET} ALL DEPENDS ${FUNC_DATAFILE_OUTPUT})
endfunction()
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