Error with c std library

[moeryomenko]

$ constexpr-everything src/configuration.cpp
In file included from /path/to/src/configuration.cpp:3:
In file included from /path/to/src/include/configuration.h:5:
In file included from /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../include/c++/10.2.0/map:60:
In file included from /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../include/c++/10.2.0/bits/stl_tree.h:63:
In file included from /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../include/c++/10.2.0/bits/stl_algobase.h:67:
In file included from /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../include/c++/10.2.0/bits/stl_iterator.h:81:
In file included from /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../include/c++/10.2.0/new:41:
In file included from /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../include/c++/10.2.0/exception:147:
In file included from /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../include/c++/10.2.0/bits/exception_ptr.h:38:
/usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../include/c++/10.2.0/bits/cxxabi_init_exception.h:38:10: fatal error: 'stddef.h' file not found
#include <stddef.h>
         ^~~~~~~~~~
1 error generated.
Error while processing /path/to/src/configuration.cpp.

$ constexpr-everything --version
LLVM (http://llvm.org/):
  LLVM version 11.1.0
  Optimized build.
  Default target: x86_64-pc-linux-gnu
  Host CPU: znver1