vcpkg/scripts/cmake/vcpkg_install_copyright.cmake

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CMake
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function(vcpkg_install_copyright)
cmake_parse_arguments(PARSE_ARGV 0 arg "" "COMMENT" "FILE_LIST")
if(DEFINED arg_UNPARSED_ARGUMENTS)
message(FATAL_ERROR "${CMAKE_CURRENT_FUNCTION} was passed extra arguments: ${arg_UNPARSED_ARGUMENTS}")
endif()
if(NOT DEFINED arg_FILE_LIST)
message(FATAL_ERROR "FILE_LIST must be specified")
endif()
list(LENGTH arg_FILE_LIST FILE_LIST_LENGTH)
set(out_string "")
if(FILE_LIST_LENGTH LESS_EQUAL 0)
message(FATAL_ERROR "FILE_LIST must contain at least one file")
elseif(FILE_LIST_LENGTH EQUAL 1)
if(arg_COMMENT)
file(READ "${arg_FILE_LIST}" out_string)
else()
file(INSTALL "${arg_FILE_LIST}" DESTINATION "${CURRENT_PACKAGES_DIR}/share/${PORT}" RENAME copyright)
return()
endif()
else()
foreach(file_item IN LISTS arg_FILE_LIST)
if(NOT EXISTS "${file_item}")
message(FATAL_ERROR "\n${CMAKE_CURRENT_FUNCTION} was passed a non-existing path: ${file_item}\n")
endif()
get_filename_component(file_name "${file_item}" NAME)
file(READ "${file_item}" file_contents)
string(APPEND out_string "${file_name}:\n\n${file_contents}\n\n")
endforeach()
endif()
if(arg_COMMENT)
string(PREPEND out_string "${arg_COMMENT}\n\n")
endif()
file(WRITE "${CURRENT_PACKAGES_DIR}/share/${PORT}/copyright" "${out_string}")
endfunction()