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68 lines
2.7 KiB
CMake
68 lines
2.7 KiB
CMake
# FIND_PACKAGE_VERSION_CHECK(NAME (DEFAULT_MSG|"Custom failure message"))
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# This function is intended to be used in FindXXX.cmake modules files.
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# It handles NAME_FIND_VERSION and NAME_VERSION variables in a Module.
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#
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# Example:
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# find_package(LibSSH 0.3.2)
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#
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# # check for the version and set it
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# set(LibSSH_VERSION 0.3.0)
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# find_package_version_check(LibSSH DEFAULT_MSG)
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#
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#
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# Copyright (c) 2009 Andreas Schneider <asn@cryptomilk.org>
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#
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# Redistribution and use is allowed according to the terms of the New
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# BSD license.
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function(FIND_PACKAGE_VERSION_CHECK _NAME _FAIL_MSG)
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string(TOUPPER ${_NAME} _NAME_UPPER)
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set(_AGE "old")
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if(${_NAME}_FIND_VERSION_EXACT)
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if (${_NAME}_FIND_VERSION VERSION_EQUAL ${_NAME}_VERSION)
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# exact version found
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set(${_NAME_UPPER}_FOUND TRUE)
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else (${_NAME}_FIND_VERSION VERSION_EQUAL ${_NAME}_VERSION)
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# exect version not found
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set(${_NAME_UPPER}_FOUND FALSE)
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# check if newer or older
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if (${_NAME}_FIND_VERSION VERSION_LESS ${_NAME}_VERSION)
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set(_AGE "new")
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else (${_NAME}_FIND_VERSION VERSION_LESS ${_NAME}_VERSION)
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set(_AGE "old")
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endif (${_NAME}_FIND_VERSION VERSION_LESS ${_NAME}_VERSION)
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endif (${_NAME}_FIND_VERSION VERSION_EQUAL ${_NAME}_VERSION)
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else (${_NAME}_FIND_VERSION_EXACT)
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if (${_NAME}_FIND_VERSION)
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if (${_NAME}_VERSION VERSION_LESS ${_NAME}_FIND_VERSION)
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set(${_NAME_UPPER}_FOUND FALSE)
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set(_AGE "old")
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else (${_NAME}_VERSION VERSION_LESS ${_NAME}_FIND_VERSION)
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set(${_NAME_UPPER}_FOUND TRUE)
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endif (${_NAME}_VERSION VERSION_LESS ${_NAME}_FIND_VERSION)
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endif (${_NAME}_FIND_VERSION)
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endif(${_NAME}_FIND_VERSION_EXACT)
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if ("${_FAIL_MSG}" STREQUAL "DEFAULT_MSG")
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if (${_NAME}_FIND_VERSION_EXACT)
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set(_FAIL_MESSAGE "The installed ${_NAME} version ${${_NAME}_VERSION} is too ${_AGE}, version ${${_NAME}_FIND_VERSION} is required.")
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else (${_NAME}_FIND_VERSION_EXACT)
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set(_FAIL_MESSAGE "The installed ${_NAME} version ${${_NAME}_VERSION} is too ${_AGE}, at least version ${${_NAME}_FIND_VERSION} is required.")
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endif (${_NAME}_FIND_VERSION_EXACT)
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else ("${_FAIL_MSG}" STREQUAL "DEFAULT_MSG")
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set(_FAIL_MESSAGE "${_FAIL_MSG}")
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endif ("${_FAIL_MSG}" STREQUAL "DEFAULT_MSG")
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if (NOT ${_NAME_UPPER}_FOUND)
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if (${_NAME}_FIND_REQUIRED)
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message(FATAL_ERROR "${_FAIL_MESSAGE}")
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else (${_NAME}_FIND_REQUIRED)
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if (NOT ${_NAME}_FIND_QUIETLY)
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message(STATUS "${_FAIL_MESSAGE}")
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endif (NOT ${_NAME}_FIND_QUIETLY)
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endif (${_NAME}_FIND_REQUIRED)
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endif (NOT ${_NAME_UPPER}_FOUND)
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set(${_NAME_UPPER}_FOUND ${${_NAME_UPPER}_FOUND} PARENT_SCOPE)
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endfunction(FIND_PACKAGE_VERSION_CHECK)
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