Linking problem: undefined reference to log@GLIBC_2.29 about fcwt

[stryder-vtx]

I got it to build in a docker container running Rocky Linux 9.2 after modifying the CMakeLists.txt to use the installed FFTW libraries and look in /usr/lib64.

[felixdollack]

@stellarpower there is a pending pull (#33) request to do just that

[felixdollack]

@stryder-vtx it seems with RHEL 7 it is not possible to install GLIBC 2.29.
In a recent issue of another project someone commented on a workaround using RHEL 9...

[stryder-vtx]

Is there anything special about the libfftw3fl.so library such that it can't be built on a RHEL 7 machine? Or perhaps I can just use an existing libfftw3f.so or libfftw3l.so?

[stellarpower]

glibc errors usually occur for me when I build a project on one OS release, and then try to run it on another. Are you installing the FFTW package from the repos for a newer version of RedHat?

[felixdollack]

@stryder-vtx, I am glad you got it working for you.
Since Rocky Linux is the open-source variant of RHEL, you also could have used RHEL9 as mentioned before.

[stellarpower]

It sounds like it could be time to add a CI build to the project, given the number of opened issues relating to building. And maybe a simple CMake-based example application, aimed at the experience level of say an academic more so than at a programmer.