Build from Raspberry pi

[bnadem]

• Describe what you want to achieve.
  i want to compiler json.hpp under raspbery pi with c++ 17 , when try from Make file i becomen the folowing code error ?

/json.hpp:7914:17: error: ‘assert’ was not declared in this scope
assert(x.f != 0);

warning: there are no arguments to ‘assert’ that depend on a template parameter, so a declaration of ‘assert’ must be available [-fpermissive]
assert(utf8_bytes_filled > 0);
the System ist raspbery pi with new compiler gcc-9.1.0

the version ist the new