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up add_clang_unittest's calling convention. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126031 91177308-0d34-0410-b5e6-96231b3b80d8
81 lines
3.1 KiB
CMake
81 lines
3.1 KiB
CMake
# Copied from http://www.itk.org/Wiki/CMakeMacroParseArguments under
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# http://creativecommons.org/licenses/by/2.5/.
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#
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# The PARSE_ARGUMENTS macro will take the arguments of another macro and define
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# several variables. The first argument to PARSE_ARGUMENTS is a prefix to put on
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# all variables it creates. The second argument is a list of names, and the
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# third argument is a list of options. Both of these lists should be quoted. The
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# rest of PARSE_ARGUMENTS are arguments from another macro to be parsed.
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#
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# PARSE_ARGUMENTS(prefix arg_names options arg1 arg2...)
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#
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# For each item in options, PARSE_ARGUMENTS will create a variable with that
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# name, prefixed with prefix_. So, for example, if prefix is MY_MACRO and
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# options is OPTION1;OPTION2, then PARSE_ARGUMENTS will create the variables
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# MY_MACRO_OPTION1 and MY_MACRO_OPTION2. These variables will be set to true if
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# the option exists in the command line or false otherwise.
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#
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#For each item in arg_names, PARSE_ARGUMENTS will create a variable with that
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#name, prefixed with prefix_. Each variable will be filled with the arguments
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#that occur after the given arg_name is encountered up to the next arg_name or
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#the end of the arguments. All options are removed from these
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#lists. PARSE_ARGUMENTS also creates a prefix_DEFAULT_ARGS variable containing
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#the list of all arguments up to the first arg_name encountered.
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#
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#Here is a simple, albeit impractical, example of using PARSE_ARGUMENTS that
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#demonstrates its behavior.
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#
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# SET(arguments
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# hello OPTION3 world
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# LIST3 foo bar
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# OPTION2
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# LIST1 fuz baz
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# )
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#
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# PARSE_ARGUMENTS(ARG "LIST1;LIST2;LIST3" "OPTION1;OPTION2;OPTION3" ${arguments})
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#
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# PARSE_ARGUMENTS creates 7 variables and sets them as follows:
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# ARG_DEFAULT_ARGS: hello;world
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# ARG_LIST1: fuz;baz
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# ARG_LIST2:
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# ARG_LIST3: foo;bar
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# ARG_OPTION1: FALSE
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# ARG_OPTION2: TRUE
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# ARG_OPTION3: TRUE
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#
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# If you don't have any options, use an empty string in its place.
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# PARSE_ARGUMENTS(ARG "LIST1;LIST2;LIST3" "" ${arguments})
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# Likewise if you have no lists.
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# PARSE_ARGUMENTS(ARG "" "OPTION1;OPTION2;OPTION3" ${arguments})
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MACRO(PARSE_ARGUMENTS prefix arg_names option_names)
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SET(DEFAULT_ARGS)
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FOREACH(arg_name ${arg_names})
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SET(${prefix}_${arg_name})
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ENDFOREACH(arg_name)
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FOREACH(option ${option_names})
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SET(${prefix}_${option} FALSE)
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ENDFOREACH(option)
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SET(current_arg_name DEFAULT_ARGS)
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SET(current_arg_list)
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FOREACH(arg ${ARGN})
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SET(larg_names ${arg_names})
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LIST(FIND larg_names "${arg}" is_arg_name)
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IF (is_arg_name GREATER -1)
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SET(${prefix}_${current_arg_name} ${current_arg_list})
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SET(current_arg_name ${arg})
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SET(current_arg_list)
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ELSE (is_arg_name GREATER -1)
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SET(loption_names ${option_names})
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LIST(FIND loption_names "${arg}" is_option)
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IF (is_option GREATER -1)
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SET(${prefix}_${arg} TRUE)
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ELSE (is_option GREATER -1)
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SET(current_arg_list ${current_arg_list} ${arg})
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ENDIF (is_option GREATER -1)
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ENDIF (is_arg_name GREATER -1)
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ENDFOREACH(arg)
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SET(${prefix}_${current_arg_name} ${current_arg_list})
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ENDMACRO(PARSE_ARGUMENTS)
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