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6bf98dba01
We introduce the "CMake.If" test to try out conversion of constants and variables to boolean values in the if() command. We cover both OLD and NEW behavior for policy CMP0012.
159 lines
3.9 KiB
CMake
159 lines
3.9 KiB
CMake
# Prepare variable definitions.
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set(VAR_UNDEFINED)
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set(VAR_PATH /some/path/to/a/file.txt)
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set(FALSE_NAMES OFF NO FALSE N FOO-NOTFOUND IGNORE Off No False Ignore off n no false ignore)
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set(TRUE_NAMES ON YES TRUE Y On Yes True on yes true y)
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foreach(_arg "" 0 1 2 ${TRUE_NAMES} ${FALSE_NAMES})
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set(VAR_${_arg} "${_arg}")
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endforeach()
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macro(test_vars _old)
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# Variables set to false or not set.
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foreach(_var "" 0 ${FALSE_NAMES} UNDEFINED)
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if(VAR_${_var})
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message(FATAL_ERROR "${_old}if(VAR_${_var}) is true!")
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else()
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message(STATUS "${_old}if(VAR_${_var}) is false")
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endif()
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if(NOT VAR_${_var})
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message(STATUS "${_old}if(NOT VAR_${_var}) is true")
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else()
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message(FATAL_ERROR "${_old}if(NOT VAR_${_var}) is false!")
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endif()
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endforeach()
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# Variables set to true.
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foreach(_var 1 2 ${TRUE_NAMES} PATH)
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if(VAR_${_var})
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message(STATUS "${_old}if(VAR_${_var}) is true")
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else()
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message(FATAL_ERROR "${_old}if(VAR_${_var}) is false!")
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endif()
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if(NOT VAR_${_var})
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message(FATAL_ERROR "${_old}if(NOT VAR_${_var}) is true!")
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else()
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message(STATUS "${_old}if(NOT VAR_${_var}) is false")
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endif()
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endforeach()
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endmacro()
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#-----------------------------------------------------------------------------
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# Test the OLD behavior of CMP0012.
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cmake_policy(SET CMP0012 OLD)
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# False constants not recognized (still false).
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foreach(_false "" ${FALSE_NAMES})
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if("${_false}")
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message(FATAL_ERROR "OLD if(${_false}) is true!")
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else()
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message(STATUS "OLD if(${_false}) is false")
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endif()
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if(NOT "${_false}")
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message(STATUS "OLD if(NOT ${_false}) is true")
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else()
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message(FATAL_ERROR "OLD if(NOT ${_false}) is false!")
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endif()
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endforeach()
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# True constants not recognized.
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foreach(_false ${TRUE_NAMES})
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if(${_false})
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message(FATAL_ERROR "OLD if(${_false}) is true!")
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else()
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message(STATUS "OLD if(${_false}) is false")
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endif()
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if(NOT ${_false})
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message(STATUS "OLD if(NOT ${_false}) is true")
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else()
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message(FATAL_ERROR "OLD if(NOT ${_false}) is false!")
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endif()
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endforeach()
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# Numbers not recognized properly.
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foreach(_num 2 -2 2.0 -2.0 2x -2x)
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if(${_num})
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message(FATAL_ERROR "OLD if(${_num}) is true!")
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else()
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message(STATUS "OLD if(${_num}) is false")
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endif()
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if(NOT ${_num})
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message(FATAL_ERROR "OLD if(NOT ${_num}) is true!")
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else()
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message(STATUS "OLD if(NOT ${_num}) is false")
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endif()
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endforeach()
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test_vars("OLD ")
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#-----------------------------------------------------------------------------
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# Test the NEW behavior of CMP0012.
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cmake_policy(SET CMP0012 NEW)
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# Test false constants.
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foreach(_false "" 0 ${FALSE_NAMES})
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if("${_false}")
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message(FATAL_ERROR "if(${_false}) is true!")
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else()
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message(STATUS "if(${_false}) is false")
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endif()
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if(NOT "${_false}")
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message(STATUS "if(NOT ${_false}) is true")
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else()
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message(FATAL_ERROR "if(NOT ${_false}) is false!")
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endif()
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endforeach()
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# Test true constants.
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foreach(_true 1 ${TRUE_NAMES})
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if(${_true})
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message(STATUS "if(${_true}) is true")
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else()
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message(FATAL_ERROR "if(${_true}) is false!")
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endif()
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if(NOT ${_true})
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message(FATAL_ERROR "if(NOT ${_true}) is true!")
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else()
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message(STATUS "if(NOT ${_true}) is false")
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endif()
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endforeach()
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# Numbers recognized properly.
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foreach(_num 2 -2 2.0 -2.0)
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if(${_num})
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message(STATUS "if(${_num}) is true")
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else()
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message(FATAL_ERROR "if(${_num}) is false!")
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endif()
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if(NOT ${_num})
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message(FATAL_ERROR "if(NOT ${_num}) is true!")
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else()
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message(STATUS "if(NOT ${_num}) is false")
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endif()
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endforeach()
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# Bad numbers not recognized.
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foreach(_bad 2x -2x)
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if(${_bad})
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message(FATAL_ERROR "if(${_bad}) is true!")
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else()
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message(STATUS "if(${_bad}) is false")
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endif()
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if(NOT ${_bad})
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message(STATUS "if(NOT ${_bad}) is true")
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else()
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message(FATAL_ERROR "if(NOT ${_bad}) is false!")
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endif()
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endforeach()
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test_vars("")
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