Hi All,
I have a question about CMake variables and preprocessor directives. I have a
local project built using CMake that relies on ITK. Some of the filters in
this project rely on ITK filters that are in ITKReview. I want to do the right
thing in the CMake of my local project by checking for the ITKReview flag and
then excluding all of my local filters that depend on ITKReview if the flag is
not set.
This process worked fine when using "ITK_USE_REVIEW", but this flag has been
deprecated now. Xiaoxiao told me that the right flag to use is
"ITKReview_LOADED" instead of "Module_ITKReview", and the CMake of my local
project can now read successfully the "ITKReview_LOADED" flag.
However, I am still having trouble with a closely related question: is there a
preprocessor directive for that flag as well? For example, in my local project
I have all of my tests in REGISTER_TEST commands in an AlgorithmsTests.cxx file
(this is the same structure we used to have in ITK). Here is the code:
#if defined(ITK_USE_REVIEW) || defined(ITKReview_LOADED) ||
defined(Module_ITKReview)
REGISTER_TEST(MyTest);
#endif
However, this code is ignored even when I have the Module_ITKReview CMake
variable set. But if I link against a previous version of ITK with
ITK_USE_REVIEW, it works!
Xiaoxiao pointed me to the #cmakedefine commands, and I noticed that in the
itkConfigure.h.in file of InsightToolkit-3.20.1, there is
#cmakedefine ITK_USE_REVIEW
I tried doing a similar thing by adding the following line in
Modules/Core/Common/src/itkConfigure.h of the most recent ITK:
#cmakedefine ITKReview_LOADED
This did not work, so I tried putting the same line in the itkConfigure.h.in of
my local project, but that didn't work either. I also tried the following lines
to no avail:
#define ITKReview_LOADED @ITKReview_LOADED@
#define ITKReview_LOADED
So, my question is: in my local project, how do I access a preprocessor
variable from ITK that tells whether ITKReview is on?
Many thanks,
Dirk
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