I ran into an error when compiling The Dark Mod on Linux with glibc 2.34.
Building CXX object CMakeFiles/TheDarkMod.dir/tests/TestRun.cpp.o
In file included from /home/dm/darkmod_src/tests/testing.h:22,
from /home/dm/darkmod_src/tests/TestRun.cpp:18:
/home/dm/darkmod_src/ThirdParty/artefacts/doctest/include/doctest/doctest.h:3998:47: error: size of array ‘altStackMem’ is not an integral constant-expression
3998 | static char altStackMem[4 * SIGSTKSZ];