[Pkg-cmake-team] Problem with ftbfs on armel and mipsel with cmake 3.16.3

[John Scott]

On Wednesday, June 3, 2020 4:58:08 PM EDT Håvard Flaget Aasen wrote:
> The beginning of the error message is:
> CMake Error at
> /usr/share/cmake-3.16/Modules/CMakeCompilerIdDetection.cmake:26 (list):
>   list sub-command REMOVE_ITEM requires two or more arguments.

That part of the module says
list(REMOVE_ITEM lang_files ${nonlang_files})
so the error probably has to do with ${nonlang_files} being empty. I reproduced 
on mipsel emulated with qemu-user-static (a wonderful gem [1]), I didn't try 
this on real hardware.

It looks like the part to define nonlang_files immediately preceding is 
file(GLOB nonlang_files
      "${CMAKE_ROOT}/Modules/Compiler/*-${nonlang}-DetermineCompiler.cmake")

Rolling back to CMake to 3.15.4 was the same, but CMake 3.13.2 worked. So I 
looked as to what the difference would be between those paths and got files.diff.
I've attached the diff on CMakeCompilerIdDetection.cmake. Both of these 
together seem to be ARM and MIPS-specific, so are probably related to the issue 
somehow.

I'm CC'ing the CMake folks should they have a clue.

[1] https://wiki.debian.org/QemuUserEmulation
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