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# PrintableOptions.cmake
#
# Provides functions to manage printable options,
# which can be printed at the end of the configuration
#
# add_printable_variable_bare(_name)
# adds variable named _name to the list of prinable options
#
# add_printable_option(_name _description _default_value)
# the same as option() command, only also notes this option for later printing
#
# add_printable_variable(_name _description _default_value)
# sets a new cached STRING variable and adds it to the list of printable options
#
# add_printable_variable_path(_name _description _default_value)
# sets a new cached PATH variable and adds it to the list of printable options
#
# print_build_options()
# prints all the build options previously added with the above functions
macro(add_printable_variable_bare _name)
if("${_name}" STREQUAL "")
message(FATAL_ERROR "variable name cannot be empty")
endif("${_name}" STREQUAL "")
list(APPEND _printable_options ${_name})
endmacro()
macro(add_printable_option _name _description _default_value)
if("${_name}" STREQUAL "")
message(FATAL_ERROR "option name cannot be empty")
endif("${_name}" STREQUAL "")
option(${_name} ${_description} ${_default_value})
add_printable_variable_bare(${_name})
endmacro()
macro(add_printable_variable _name _description _default_value)
if("${_name}" STREQUAL "")
message(FATAL_ERROR "variable name cannot be empty")
endif("${_name}" STREQUAL "")
set(${_name} ${_default_value} CACHE STRING ${_description})
add_printable_variable_bare(${_name})
endmacro()
macro(add_printable_variable_path _name _description _default_value)
if("${_name}" STREQUAL "")
message(FATAL_ERROR "path variable name cannot be empty")
endif("${_name}" STREQUAL "")
set(${_name} ${_default_value} CACHE PATH ${_description})
add_printable_variable_bare(${_name})
endmacro()
macro(add_printable_variable_filepath _name _description _default_value)
if("${_name}" STREQUAL "")
message(FATAL_ERROR "filepath variable name cannot be empty")
endif("${_name}" STREQUAL "")
set(${_name} ${_default_value} CACHE FILEPATH ${_description})
add_printable_variable_bare(${_name})
endmacro()
function(print_build_options)
message(STATUS "Configure options:")
set(max_len 0)
foreach(opt IN LISTS _printable_options)
string(LENGTH "${opt}" len)
if(max_len LESS len)
set(max_len ${len})
endif(max_len LESS len)
endforeach()
math(EXPR max_len "${max_len} + 2")
foreach(opt IN LISTS _printable_options)
string(LENGTH "${opt}" len)
set(str " ${opt} ")
foreach (IGNORE RANGE ${len} ${max_len})
set(str "${str}.")
endforeach ()
set(str "${str} ${${opt}}")
message(STATUS ${str})
endforeach()
endfunction()
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