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42 lines
2.5 KiB
42 lines
2.5 KiB
function(compare_compiler_version lang)
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cmake_policy(GET CMP0129 LCC_FALLBACK_MODE)
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if(${CMAKE_${lang}_COMPILER} STREQUAL "LCC" OR ${CMAKE_${lang}_COMPILER} STREQUAL "GNU")
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execute_process(COMMAND ${CMAKE_${lang}_COMPILER} --version OUTPUT_VARIABLE output)
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if("${output}" MATCHES [[lcc:([0-9]+.[0-9]+.([0-9]+)):]])
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set(native_version ${CMAKE_MATCH_1})
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else()
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message(FATAL_ERROR "Can not identify native LCC version for language ${lang}.")
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endif()
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if("${output}" MATCHES [[\(GCC\) ([0-9]+.[0-9]+.([0-9]+)) compatible]])
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set(simulated_version ${CMAKE_MATCH_1})
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else()
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message(FATAL_ERROR "Can not identify simulated GNU version for language ${lang}.")
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endif()
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message(STATUS "Compiler native version is ${native_version}, simulated version is ${simulated_version}.")
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if("${LCC_FALLBACK_MODE}" STREQUAL "NEW")
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if(NOT "${CMAKE_${lang}_COMPILER_ID}" STREQUAL "LCC")
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message(FATAL_ERROR "Policy is in NEW mode, but compiler identification is ${CMAKE_${lang}_COMPILER_ID} instead of LCC.")
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endif()
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if(NOT "${CMAKE_${lang}_COMPILER_VERSION}" STREQUAL "${native_version}")
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message(FATAL_ERROR "Policy is in NEW mode, but compiler version is ${CMAKE_${lang}_COMPILER_VERSION} instead of ${native_version}.")
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endif()
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if(NOT "${CMAKE_${lang}_SIMULATE_ID}" STREQUAL "GNU")
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message(FATAL_ERROR "Policy is in NEW mode, but simulated compiler identification is ${CMAKE_${lang}_SIMULATE_ID} instead of GNU.")
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endif()
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if(NOT "${CMAKE_${lang}_SIMULATE_VERSION}" STREQUAL "${simulated_version}")
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message(FATAL_ERROR "Policy is in NEW mode, but simulated compiler version is ${CMAKE_${lang}_SIMULATE_VERSION} instead of ${simulated_version}.")
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endif()
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else()
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if(NOT "${CMAKE_${lang}_COMPILER_ID}" STREQUAL "GNU")
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message(FATAL_ERROR "Policy is in OLD mode, but compiler identification is ${CMAKE_${lang}_COMPILER_ID} instead of GNU.")
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endif()
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if(NOT "${CMAKE_${lang}_COMPILER_VERSION}" STREQUAL "${simulated_version}")
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message(FATAL_ERROR "Policy is in OLD mode, but compiler version is ${CMAKE_${lang}_COMPILER_VERSION} instead of ${simulated_version}.")
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endif()
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if(${CMAKE_${lang}_SIMULATE_VERSION} OR ${CMAKE_${lang}_SIMULATE_ID)
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message(FATAL_ERROR "Policy is in OLD mode, but simulated compiler ID/version is ${CMAKE_${lang}_COMPILER_ID}/${CMAKE_${lang}_COMPILER_VERSION} instead of undefined.")
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endif()
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endif()
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endif()
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endfunction()
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