Recommended way to override `superlu_abort_and_exit()` with `USER_ABORT`?

[alexchandel]

What is the supported way to override superlu_abort_and_exit() using USER_ABORT? While one can define the macro to one's own function (e.g. -DUSER_ABORT=MySUError), SuperLU provides no way to inject the declaration, and the signature of void superlu_abort_and_exit(char *) is not the signature of an implicit function.

[xiaoyeli]

Have you tried?

-DUSER_ABORT(msg)=MySUError(msg)

Or, you can modify the source file SRC/slu_util.h, with your new definitions.

[alexchandel]

-DUSER_ABORT(msg)=MySUError(msg)

That's equivalent to -DUSER_ABORT=MySUError, although less portable between compilers.

The problem is that regardless of what you define USER_ABORT to be, it will be implicitly defined (short of modding SuperLU's own headers as you suggest, which is not maintainable), and it will likely have an invalid signature.

[mennodeij]

I encountered the same issue, and solved it with

1. -DUSER_ABORT=__wrap_superlu_abort_and_exit and
2. the GCC/Clang linker flag -Wl,--wrap=superlu_abort_and_exit which redirects calls to superlu_abort_and_exit to __wrap_superlu_abort_and_exit

you need to supply the __wrap_superlu_abort_and_exit function to effectively replace superlu_abort_and_exit