[...]
In file included from /usr/x86_64-pc-linux-gnu/include/signal.h:328,
                 from ./catch/single_include/catch2/catch.hpp:8034,
                 from src/global-init.cxx:27:
./catch/single_include/catch2/catch.hpp:10822:58: error: call to non-'constexpr' function 'long int sysconf(int)'
10822 |     static constexpr std::size_t sigStackSize = 32768 >= MINSIGSTKSZ ? 32768 : MINSIGSTKSZ;
      |                                                          ^~~~~~~~~~~
In file included from /usr/x86_64-pc-linux-gnu/include/bits/sigstksz.h:24,
                 from /usr/x86_64-pc-linux-gnu/include/signal.h:328,
                 from ./catch/single_include/catch2/catch.hpp:8034,
                 from src/global-init.cxx:27:
/usr/x86_64-pc-linux-gnu/include/unistd.h:641:17: note: 'long int sysconf(int)' declared here
  641 | extern long int sysconf (int __name) __THROW;
      |                 ^~~~~~~
In file included from src/global-init.cxx:27:
./catch/single_include/catch2/catch.hpp:10881:45: error: size of array 'altStackMem' is not an integral constant-expression
10881 |     char FatalConditionHandler::altStackMem[sigStackSize] = {};
      |
[...]