// This is a dummy program that just needs to compile and link to tell us if
// the C++17 std::filesystem API is available. Use CMake's configure_file
// command to replace the FILESYSTEM_HEADER and FILESYSTEM_NAMESPACE tokens
// for each combination of headers and namespaces which we want to pass to the
// CMake try_compile command.

#include <@FILESYSTEM_HEADER@>

// clang-format off
int main()
{
#if defined( __cpp_exceptions )
   try {
      throw @FILESYSTEM_NAMESPACE@::filesystem_error( "instantiate one to make sure it links", std::make_error_code( std::errc::function_not_supported ) );
   }
   catch( const @FILESYSTEM_NAMESPACE@::filesystem_error& error ) {
      return -1;
   }
#endif

   return !@FILESYSTEM_NAMESPACE@::temp_directory_path().is_absolute();
}