File: clFFTConfigVersion.cmake.in

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# This is a basic version file for the Config-mode of find_package().
# It is used by write_basic_package_version_file() as input file for configure_file()
# to create a version-file which can be installed along a config.cmake file.
#
# The created file sets PACKAGE_VERSION_EXACT if the current version string and
# the requested version string are exactly the same and it sets
# PACKAGE_VERSION_COMPATIBLE if the current version is >= requested version,
# but only if the requested major version is the same as the current one.
# The variable CLFFT_VERSION must be set before calling configure_file().


set(PACKAGE_VERSION "@CLFFT_VERSION@")

if("${PACKAGE_VERSION}" VERSION_LESS "${PACKAGE_FIND_VERSION}" )
  set(PACKAGE_VERSION_COMPATIBLE FALSE)
else()

  if("@CLFFT_VERSION@" MATCHES "^([0-9]+)\\.")
    set(CLFFT_VERSION_MAJOR "${CMAKE_MATCH_1}")
  else()
    set(CLFFT_VERSION_MAJOR "@CLFFT_VERSION@")
  endif()

  if("${PACKAGE_FIND_VERSION_MAJOR}" STREQUAL "${CLFFT_VERSION_MAJOR}")
    set(PACKAGE_VERSION_COMPATIBLE TRUE)
  else()
    set(PACKAGE_VERSION_COMPATIBLE FALSE)
  endif()

  if( "${PACKAGE_FIND_VERSION}" STREQUAL "${PACKAGE_VERSION}")
      set(PACKAGE_VERSION_EXACT TRUE)
  endif()
endif()


# if the installed or the using project don't have CMAKE_SIZEOF_VOID_P set, ignore it:
if("${CMAKE_SIZEOF_VOID_P}"  STREQUAL ""  OR "@CMAKE_SIZEOF_VOID_P@" STREQUAL "")
   return()
endif()

# check that the installed version has the same 32/64bit-ness as the one which is currently searching:
if(NOT "${CMAKE_SIZEOF_VOID_P}" STREQUAL "@CMAKE_SIZEOF_VOID_P@")
  math(EXPR installedBits "@CMAKE_SIZEOF_VOID_P@ * 8")
  set(PACKAGE_VERSION "${PACKAGE_VERSION} (${installedBits}bit)")
  set(PACKAGE_VERSION_UNSUITABLE TRUE)
endif()