Is it possible to change the C/C++ Compiler used by ffcx, when installing fenicsx with conda? I’m working on Linux (openSUSE Leap 15.6) and have installed fenicsx via conda as described on Download | FEniCS Project, but compiling the linear forms with ffcx/jit uses the default gcc-Compiler (Version 7.5.0) instead of the more recent gcc-14 compiler on my computer.
Hence, the compilation of demo_poisson.py from Poisson equation — DOLFINx 0.10.0.0 documentation failed since gcc-7 does not support C17 (compiler flag -std=c17 was not accepted when comiling the C-code generated by ffcx/jit). Changing the compiler to gcc-14, which is not the default compiler /usr/bin/gcc, would probably solve the problem, but I found no option to change the compiler, neither during the installation with conda, nor at runtime as additional option for ffcx. Just additional compiler flags can be set to the constructor of dolfinx.fem.petsc.LinearProblem in the tutorial, but not the compiler itself could be changed. Thanks for your help!