diff options
Diffstat (limited to 'modules/MacroEnsureVersion.cmake')
| -rw-r--r-- | modules/MacroEnsureVersion.cmake | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/modules/MacroEnsureVersion.cmake b/modules/MacroEnsureVersion.cmake index 9d936ce7..c6df537a 100644 --- a/modules/MacroEnsureVersion.cmake +++ b/modules/MacroEnsureVersion.cmake @@ -33,3 +33,39 @@ MACRO(MACRO_ENSURE_VERSION requested_version found_version var_too_old) endif (found_vers_num LESS req_vers_num) ENDMACRO(MACRO_ENSURE_VERSION) + + +# This macro compares version numbers of the form "x.y" +# MACRO_ENSURE_VERSION( FOO_MIN_VERSION FOO_VERSION_FOUND FOO_VERSION_OK) +# will set FOO_VERSIN_OK to true if FOO_VERSION_FOUND >= FOO_MIN_VERSION +# where both have to be in a 2-part-version format, leading and trailing +# text is ok, e.g. +# MACRO_ENSURE_VERSION( "0.5" "foo 0.6" VERSION_OK) +# which means 0.5 is required and "foo 0.6" is what was found on the system + +# Copyright (c) 2006, David Faure, <faure@kde.org> +# Copyright (c) 2007, Pino Toscano, <pino@kde.org> +# +# Redistribution and use is allowed according to the terms of the BSD license. +# For details see the accompanying COPYING-CMAKE-SCRIPTS file. + +MACRO(MACRO_ENSURE_VERSION2 requested_version found_version var_too_old) + + # parse the parts of the version string + STRING(REGEX REPLACE "([0-9]+)\\.[0-9]+" "\\1" req_major_vers "${requested_version}") + STRING(REGEX REPLACE "[0-9]+\\.([0-9]+)" "\\1" req_minor_vers "${requested_version}") + + STRING(REGEX REPLACE "[^0-9]*([0-9]+)\\.[0-9]+.*" "\\1" found_major_vers "${found_version}") + STRING(REGEX REPLACE "[^0-9]*[0-9]+\\.([0-9]+).*" "\\1" found_minor_vers "${found_version}") + + # compute an overall version number which can be compared at once + MATH(EXPR req_vers_num "${req_major_vers}*100 + ${req_minor_vers}") + MATH(EXPR found_vers_num "${found_major_vers}*100 + ${found_minor_vers}") + + if (found_vers_num LESS req_vers_num) + set( ${var_too_old} FALSE ) + else (found_vers_num LESS req_vers_num) + set( ${var_too_old} TRUE ) + endif (found_vers_num LESS req_vers_num) + +ENDMACRO(MACRO_ENSURE_VERSION2) |