Cannot compile ITK with Python wrappings on Fedora 41 with gcc 14.2.1

Engineering
1

Dear ITK community,

I am trying to compile ITK with Python wrappings locally on my machine. I run Fedora Linux 41 with GCC version 14.2.1.

I simply run cmake -DITK_WRAP_PYTHON=ON ../ITK, where ../ITK is the path to ITK sources. cmake runs without any error. I then run make and get several errors, such as

/usr/lib/gcc/x86_64-redhat-linux/14/../../../../include/c++/14/x86_64-redhat-linux/bits/c++config.h:2677:25: error: invalid suffix 'bf16' on floating constant
 2677 |   typedef __decltype(0.0bf16) __bfloat16_t;

or

/usr/lib/gcc/x86_64-redhat-linux/14/../../../../include/c++/14/limits:1989:1: error: invalid suffix 'F32' on floating constant
 1989 | __glibcxx_float_n(32)

It looked to me like an issue with C++ standard, so I tried to play with -std=c++XX but it didn’t work.

However, compilation works fine when compiling with -DITK_WRAP_PYTON=OFF, or when compiling with GCC 13.3.1 that I installed on the same machine.

Did I do something wrong when setting up the compilation? Is there some caveat when compiling with GCC 14? Or perhaps it is a known bug? I tried to go through ITK issue tracker but did not find anything relevant.

Thank you very much!

2

Hello,

A newer version of castxml may be required.

Please try the recently released version. Point your build to it with ITK_USE_SYSTEM_CASTXML and CASTXML_EXECUTABLE CMake variables.

1 Like
3

Hello,

Thank you very much for your answer and I apologize for the long delay. I found a way around the issue by downloading pre-compiled Python wheels but I always wanted to go back to this issue as it is much more convenient to be able to compile the wrappings locally.

I tried to compile CastXML locally, but I failed to do so (I got many different errors, and did not manage to finish the compilation, I can give more details if needed). Then I decided to try the castxml Fedora package, which is I believe at the latest version (0.6.11). However I still get the same error messages.

In the meantime, I cannot compile with GCC 13 anymore, but this is a different issue I believe.

Any pointers would be greatly appreciated. And thank you very much once again for your kind help!

4

Hi,

The Linux binaries here, even though though have ubuntu in the filename, should work on Fedora. And apply ITK_USE_SYSTEM_CASTXML and CASTXML_EXECUTABLE.

5

Hello,

Thank you very much for your answer! Unfortunately using the Linux binary as you suggested does not help. I still get the same error message.

I noticed my issue looks similar to that one, which I just found. I have only a limited understanding of the comments that were made about this issue, could it be the same underlying problem?

6

Hello @acoussat ,

I am not certain that this is the source of your issue, but make sure to:

  1. Use the castxml 0.6.11 binary from the Fedora package.
  2. Either do not try to change the C++ standard version for the ITK build or set it with the cmake option CMAKE_CXX_STANDARD.

HTH