diff options
Diffstat (limited to 'Modules/CheckTypeSize.cmake')
| -rw-r--r-- | Modules/CheckTypeSize.cmake | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/Modules/CheckTypeSize.cmake b/Modules/CheckTypeSize.cmake index 1717718c9..7285b8a6d 100644 --- a/Modules/CheckTypeSize.cmake +++ b/Modules/CheckTypeSize.cmake @@ -24,6 +24,11 @@ # size check automatically includes the available headers, thus # supporting checks of types defined in the headers. # +# Despite the name of the macro you may use it to check the size of +# more complex expressions, too. To check e.g. for the size of a struct +# member you can do something like this: +# check_type_size("((struct something*)0)->member" SIZEOF_MEMBER) +# # The following variables may be set before calling this macro to # modify the way the check is run: # @@ -142,7 +147,7 @@ function(__check_type_size_impl type var map builtin) file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log "Determining size of ${type} passed with the following output:\n${output}\n\n") set(${var} "${${var}}" CACHE INTERNAL "CHECK_TYPE_SIZE: sizeof(${type})") - else(HAVE_${var}) + else() # The check failed to compile. message(STATUS "Check size of ${type} - failed") file(READ ${src} content) @@ -150,7 +155,7 @@ function(__check_type_size_impl type var map builtin) "Determining size of ${type} failed with the following output:\n${output}\n${src}:\n${content}\n\n") set(${var} "" CACHE INTERNAL "CHECK_TYPE_SIZE: ${type} unknown") file(REMOVE ${map}) - endif(HAVE_${var}) + endif() endfunction() #----------------------------------------------------------------------------- |