jpayne@69: # This is a basic version file for the Config-mode of find_package().
jpayne@69: # It is used by write_basic_package_version_file() as input file for configure_file()
jpayne@69: # to create a version-file which can be installed along a config.cmake file.
jpayne@69: #
jpayne@69: # The created file sets PACKAGE_VERSION_EXACT if the current version string and
jpayne@69: # the requested version string are exactly the same and it sets
jpayne@69: # PACKAGE_VERSION_COMPATIBLE if the current version is >= requested version,
jpayne@69: # but only if the requested major version is the same as the current one.
jpayne@69: # The variable CVF_VERSION must be set before calling configure_file().
jpayne@69: 
jpayne@69: 
jpayne@69: set(PACKAGE_VERSION "1.5.6")
jpayne@69: 
jpayne@69: if(PACKAGE_VERSION VERSION_LESS PACKAGE_FIND_VERSION)
jpayne@69:   set(PACKAGE_VERSION_COMPATIBLE FALSE)
jpayne@69: else()
jpayne@69: 
jpayne@69:   if("1.5.6" MATCHES "^([0-9]+)\\.")
jpayne@69:     set(CVF_VERSION_MAJOR "${CMAKE_MATCH_1}")
jpayne@69:     if(NOT CVF_VERSION_MAJOR VERSION_EQUAL 0)
jpayne@69:       string(REGEX REPLACE "^0+" "" CVF_VERSION_MAJOR "${CVF_VERSION_MAJOR}")
jpayne@69:     endif()
jpayne@69:   else()
jpayne@69:     set(CVF_VERSION_MAJOR "1.5.6")
jpayne@69:   endif()
jpayne@69: 
jpayne@69:   if(PACKAGE_FIND_VERSION_RANGE)
jpayne@69:     # both endpoints of the range must have the expected major version
jpayne@69:     math (EXPR CVF_VERSION_MAJOR_NEXT "${CVF_VERSION_MAJOR} + 1")
jpayne@69:     if (NOT PACKAGE_FIND_VERSION_MIN_MAJOR STREQUAL CVF_VERSION_MAJOR
jpayne@69:         OR ((PACKAGE_FIND_VERSION_RANGE_MAX STREQUAL "INCLUDE" AND NOT PACKAGE_FIND_VERSION_MAX_MAJOR STREQUAL CVF_VERSION_MAJOR)
jpayne@69:           OR (PACKAGE_FIND_VERSION_RANGE_MAX STREQUAL "EXCLUDE" AND NOT PACKAGE_FIND_VERSION_MAX VERSION_LESS_EQUAL CVF_VERSION_MAJOR_NEXT)))
jpayne@69:       set(PACKAGE_VERSION_COMPATIBLE FALSE)
jpayne@69:     elseif(PACKAGE_FIND_VERSION_MIN_MAJOR STREQUAL CVF_VERSION_MAJOR
jpayne@69:         AND ((PACKAGE_FIND_VERSION_RANGE_MAX STREQUAL "INCLUDE" AND PACKAGE_VERSION VERSION_LESS_EQUAL PACKAGE_FIND_VERSION_MAX)
jpayne@69:         OR (PACKAGE_FIND_VERSION_RANGE_MAX STREQUAL "EXCLUDE" AND PACKAGE_VERSION VERSION_LESS PACKAGE_FIND_VERSION_MAX)))
jpayne@69:       set(PACKAGE_VERSION_COMPATIBLE TRUE)
jpayne@69:     else()
jpayne@69:       set(PACKAGE_VERSION_COMPATIBLE FALSE)
jpayne@69:     endif()
jpayne@69:   else()
jpayne@69:     if(PACKAGE_FIND_VERSION_MAJOR STREQUAL CVF_VERSION_MAJOR)
jpayne@69:       set(PACKAGE_VERSION_COMPATIBLE TRUE)
jpayne@69:     else()
jpayne@69:       set(PACKAGE_VERSION_COMPATIBLE FALSE)
jpayne@69:     endif()
jpayne@69: 
jpayne@69:     if(PACKAGE_FIND_VERSION STREQUAL PACKAGE_VERSION)
jpayne@69:       set(PACKAGE_VERSION_EXACT TRUE)
jpayne@69:     endif()
jpayne@69:   endif()
jpayne@69: endif()
jpayne@69: 
jpayne@69: 
jpayne@69: # if the installed or the using project don't have CMAKE_SIZEOF_VOID_P set, ignore it:
jpayne@69: if("${CMAKE_SIZEOF_VOID_P}" STREQUAL "" OR "8" STREQUAL "")
jpayne@69:   return()
jpayne@69: endif()
jpayne@69: 
jpayne@69: # check that the installed version has the same 32/64bit-ness as the one which is currently searching:
jpayne@69: if(NOT CMAKE_SIZEOF_VOID_P STREQUAL "8")
jpayne@69:   math(EXPR installedBits "8 * 8")
jpayne@69:   set(PACKAGE_VERSION "${PACKAGE_VERSION} (${installedBits}bit)")
jpayne@69:   set(PACKAGE_VERSION_UNSUITABLE TRUE)
jpayne@69: endif()