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set(min_ver 2.7.20090305)
cmake_minimum_required(VERSION ${min_ver})
if("${CMAKE_VERSION}" VERSION_LESS "${min_ver}")
message(FATAL_ERROR
"CMAKE_VERSION=[${CMAKE_VERSION}] is less than [${min_ver}]")
else()
message("CMAKE_VERSION=[${CMAKE_VERSION}] is not less than [${min_ver}]")
endif()
set(EQUALV "1 1")
list(APPEND EQUALV "1.0 1")
list(APPEND EQUALV "1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0 1")
list(APPEND EQUALV "1.2.3.4.5.6.7 1.2.3.4.5.6.7")
list(APPEND EQUALV "1.2.3.4.5.6.7.8.9 1.2.3.4.5.6.7.8.9")
foreach(v IN LISTS EQUALV)
string(REGEX MATCH "(.*) (.*)" _dummy "${v}")
# modify any of the operands to see the negative check also works
if("${CMAKE_MATCH_1}.2" VERSION_EQUAL CMAKE_MATCH_2)
message(FATAL_ERROR "${CMAKE_MATCH_1}.2 is equal ${CMAKE_MATCH_2}?")
else()
message(STATUS "${CMAKE_MATCH_1}.2 is not equal ${CMAKE_MATCH_2}")
endif()
if(CMAKE_MATCH_1 VERSION_EQUAL "${CMAKE_MATCH_2}.2")
message(FATAL_ERROR "${CMAKE_MATCH_1} is equal ${CMAKE_MATCH_2}.2?")
else()
message(STATUS "${CMAKE_MATCH_1} is not equal ${CMAKE_MATCH_2}.2")
endif()
endforeach()
# test the negative outcomes first, due to the implementation the positive
# allow some additional strings to pass that would not fail for the negative
# tests
list(APPEND EQUALV "1a 1")
list(APPEND EQUALV "1.1a 1.1")
list(APPEND EQUALV "1.0a 1")
list(APPEND EQUALV "1a 1.0")
foreach(v IN LISTS EQUALV)
# check equal versions
string(REGEX MATCH "(.*) (.*)" _dummy "${v}")
if(CMAKE_MATCH_1 VERSION_EQUAL CMAKE_MATCH_2)
message(STATUS "${CMAKE_MATCH_1} is equal ${CMAKE_MATCH_2}")
else()
message(FATAL_ERROR "${CMAKE_MATCH_1} is not equal ${CMAKE_MATCH_2}?")
endif()
# still equal, but inverted order of operands
string(REGEX MATCH "(.*) (.*)" _dummy "${v}")
if(CMAKE_MATCH_2 VERSION_EQUAL CMAKE_MATCH_1)
message(STATUS "${CMAKE_MATCH_2} is equal ${CMAKE_MATCH_1}")
else()
message(FATAL_ERROR "${CMAKE_MATCH_2} is not equal ${CMAKE_MATCH_1}?")
endif()
endforeach()
set(LESSV "1.2.3.4.5.6.7.8 1.2.3.4.5.6.7.9")
list(APPEND LESSV "1.2.3.4.5.6.7 1.2.3.4.5.6.7.9")
list(APPEND LESSV "1 1.0.0.1")
foreach(v IN LISTS LESSV)
string(REGEX MATCH "(.*) (.*)" _dummy "${v}")
# check less
if(CMAKE_MATCH_1 VERSION_LESS CMAKE_MATCH_2)
message(STATUS "${CMAKE_MATCH_1} is less than ${CMAKE_MATCH_2}")
else()
message(FATAL_ERROR "${CMAKE_MATCH_1} is not less than ${CMAKE_MATCH_2}?")
endif()
# check greater
if(CMAKE_MATCH_2 VERSION_GREATER CMAKE_MATCH_1)
message(STATUS "${CMAKE_MATCH_2} is greater than ${CMAKE_MATCH_1}")
else()
message(FATAL_ERROR "${CMAKE_MATCH_2} is not greater than ${CMAKE_MATCH_1}?")
endif()
# check less negative case
if(NOT CMAKE_MATCH_2 VERSION_LESS CMAKE_MATCH_1)
message(STATUS "${CMAKE_MATCH_2} is not less than ${CMAKE_MATCH_1}")
else()
message(FATAL_ERROR "${CMAKE_MATCH_2} is less than ${CMAKE_MATCH_1}?")
endif()
# check greater negative case
if(NOT CMAKE_MATCH_1 VERSION_GREATER CMAKE_MATCH_2)
message(STATUS "${CMAKE_MATCH_1} is not greater than ${CMAKE_MATCH_2}")
else()
message(FATAL_ERROR "${CMAKE_MATCH_1} is greater than ${CMAKE_MATCH_2}?")
endif()
endforeach()
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