Hello, I am using Quartus 18.1 release and I am trying to compile C++ code which requires libstdc++ std::to_string() and std::stoi() and a large number of other string related library function.

​I installed Quartus Prime standard 18.1.0.625. Looking back just now I was confused about the file name I tried to include. In the directory I mentioned there is a "basic_string.h" file which has an inline definition of the to_string () template functions variations I need. The linker complains that to_string is not a member of std:: namespace. If I drop the std:: This led me to believe that the header file is not being included I am off working on something else right now so I don't have the example error handy. but this trivial test show the problem

#include <string>

using namespace std;

int main()

{

string teststring("hey there");

printf("srtring = %s \n", std::to_string(teststring);

return 0;

}

~

$ nios2-elf-g++ -std=c++14 -c fo.cpp

fo.cpp: In function 'int main()':

fo.cpp:8:31: error: 'to_string' is not a member of 'std'

printf("srtring = %s \n", std::to_string(teststring);

^

Thanks for the response. Sorry I wasn't clearer.

Bill