I am trying to build the DJI Onboard-SDK on a Raspberry Pi 4, and have had errors with different libraries missing that I have managed to resolve by installing those libraries. I've now gotten an error saying std::string isan incomplete type and printf is not declared. The only suggestions I've found say to install build-essentials, which I've already got installed and up to date. Can anyone give me suggestions about where to look next?

I've tried reinstalling g++ and ensuring all packages are up to date. I'm still getting the following errors in my make output;

[ 26%] Building CXX object osdk-core/CMakeFiles/djiosdk-core.dir/modules/src/filemgr/impl/mmap_file_buffer.cpp.o
In file included from /home/pi/catkin_ws/src/Onboard-SDK/osdk-core/modules/src/filemgr/impl/mmap_file_buffer.cpp:4:
/home/pi/catkin_ws/src/Onboard-SDK/osdk-core/modules/inc/filemgr/impl/mmap_file_buffer.hpp:23:15: error: field ‘currentLogFilePath’ has incomplete type ‘std::string’ {aka ‘std::__cxx11::basic_string<char>’}
   23 |   std::string currentLogFilePath;
      |               ^~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10/iosfwd:39,
                 from /usr/include/c++/10/memory:74,
                 from /home/pi/catkin_ws/src/Onboard-SDK/osdk-core/modules/inc/filemgr/impl/mmap_file_buffer.hpp:13,
                 from /home/pi/catkin_ws/src/Onboard-SDK/osdk-core/modules/src/filemgr/impl/mmap_file_buffer.cpp:4:
/usr/include/c++/10/bits/stringfwd.h:74:11: note: declaration of ‘std::string’ {aka ‘class std::__cxx11::basic_string<char>’}
   74 |     class basic_string;
      |           ^~~~~~~~~~~~
/home/pi/catkin_ws/src/Onboard-SDK/osdk-core/modules/src/filemgr/impl/mmap_file_buffer.cpp:15:39: error: ‘path’ has incomplete type
   15 | bool MmapFileBuffer::init(std::string path, uint64_t fileSize) {
      |                           ~~~~~~~~~~~~^~~~
In file included from /usr/include/c++/10/iosfwd:39,
                 from /usr/include/c++/10/memory:74,
                 from /home/pi/catkin_ws/src/Onboard-SDK/osdk-core/modules/inc/filemgr/impl/mmap_file_buffer.hpp:13,
                 from /home/pi/catkin_ws/src/Onboard-SDK/osdk-core/modules/src/filemgr/impl/mmap_file_buffer.cpp:4:
/usr/include/c++/10/bits/stringfwd.h:74:11: note: declaration of ‘std::string’ {aka ‘class std::__cxx11::basic_string<char>’}
   74 |     class basic_string;
      |           ^~~~~~~~~~~~
/home/pi/catkin_ws/src/Onboard-SDK/osdk-core/modules/src/filemgr/impl/mmap_file_buffer.cpp: In member function ‘bool DJI::OSDK::MmapFileBuffer::init(std::string, uint64_t)’:
/home/pi/catkin_ws/src/Onboard-SDK/osdk-core/modules/src/filemgr/impl/mmap_file_buffer.cpp:19:3: error: ‘printf’ was not declared in this scope
   19 |   printf("Preparing File : %s\n", this->currentLogFilePath.c_str());
      |   ^~~~~~
/home/pi/catkin_ws/src/Onboard-SDK/osdk-core/modules/src/filemgr/impl/mmap_file_buffer.cpp:7:1: note: ‘printf’ is defined in header ‘<cstdio>’; did you forget to ‘#include <cstdio>’?
    6 | #include <string.h>
  +++ |+#include <cstdio>
    7 |
make[2]: *** [osdk-core/CMakeFiles/djiosdk-core.dir/build.make:524: osdk-core/CMakeFiles/djiosdk-core.dir/modules/src/filemgr/impl/mmap_file_buffer.cpp.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:580: osdk-core/CMakeFiles/djiosdk-core.dir/all] Error 2
make: *** [Makefile:149: all] Error 2