I'm using Ubuntu and arm-none-eabi to crosscompile some baremetal programs for the Raspberry Pi, my problem now is, that this:

 char ch[32];
    const char doubleout[] = "double received: ";
    std::string doublestring;
    std::string outstring;
    const char string[] = "character received: ";
    double received = 0.0;
        int32_t retVal = uart->read(ch,32);
        if (retVal > 0){

            doublestring = std::string(ch);
            received = std::stod(doublestring);
            outstring = std::to_string(received);
            write(outstring.c_str(), outstring.length()-1);


Doesn't crosscompile with this error:

uart3.cpp: In member function 'virtual void UartTest::run()':
uart3.cpp:48:16: error: 'stod' is not a member of 'std'
 received = std::stod(doublestring);
uart3.cpp:49:17: error: 'to_string' is not a member of 'std'
 outstring = std::to_string(received);

Compiling for Linux (amd64/x86) instead works fine, it also compiles when using C-methods, like atof(), but not with string or stod().

Is there a solution for this?

1 Answer 1


I solved the problem by using the compiler option "-std=c++0x".

  • Can you maybe give a bit more detail on how you used it?
    – Kachamenus
    Oct 15, 2015 at 13:11
  • Can you explain what those options do and why they help in this particular case?
    – Phil B.
    Oct 15, 2015 at 19:00

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