CMake - Argumen Parser Helper

CMake - Argumen Parser Helper.cmake

# Note: this parser 

# Here is the helper macro to use in your project:

macro(parse_arguments)
    cmake_parse_arguments(__argument_parser "" "PREFIX" "FLAG;VALUE;MULTI;ARGS" ${ARGN})
    if(NOT DEFINED __argument_parser_PREFIX)
        set(__argument_parser_PREFIX "${CMAKE_CURRENT_FUNCTION}")
    endif()
    cmake_parse_arguments("${__argument_parser_PREFIX}" "${__argument_parser_FLAG}" "${__argument_parser_VALUE}" "${__argument_parser_MULTI}" ${__argument_parser_ARGS})
    set(arg_prefix "${__argument_parser_PREFIX}_")
endmacro()

# Here is example usage:

function(my_function ARG1)
  message("ARG1 is ${ARG1}")
  parse_arguments(
    FLAG IS_FOO NOT_BAR  # (optional) provide FLAG arguments, if any
    VALUE NAME TARGET    # (optional) provide single VALUE arguments, if any
    MULTI FILES SOURCES  # (optional) provide MULTI arguments which can have pass multiple values, if any
    ARGS ${ARGN}         # (required) provide ARGN (additional arguments passed to the function/macro)
  )
  message("Name: ${${arg_prefix}NAME}") # Just prefix each argument with ${arg_prefix} when accessing it
endfunction()

# Call the function normally:

my_function("Whatever" IS_FOO FILES a.txt b.txt c.txt NAME CoolName)

# You NEVER need to provide a "PREFIX" using this helper. It defaults to the name of the current function.
# Note: in macros, it'll also default to the name of the current *function*.
# If you ever want/need to set the previs manually, just pass PREFIX "Something". You can still use ${arg_prefix}.