Compiler and library support for the ISO C++ 2011 standard

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I am trying to create an i2c communication in raspbery Pi(debian wheezy) using Qt creator with rpi-hw library. I successfully compiled and installed the rpi-hw library in my linux system. But when I try to include this in my Qt. Got the following errors.

/usr/include/c++/4.7/bits/c++0x_warning.h:32: error: #error This file requires compiler and library support for the ISO C++ 2011 standard. This support is currently experimental, and must be enabled with the -std=c++11 or -std=gnu++11 compiler options.
/usr/include/rpi-hw.hpp:159: In file included from /usr/include/rpi-hw.hpp:159:0,
/home/pi/untitled/main.cpp:2: from ../untitled/main.cpp:2:
/usr/include/rpi-hw/types.hpp:32: error: 'std::int8_t' has not been declared
/usr/include/rpi-hw/types.hpp:33: error: 'std::int16_t' has not been declared
/usr/include/rpi-hw/types.hpp:34: error: 'std::int32_t' has not been declared
/usr/include/rpi-hw/types.hpp:35: error: 'std::int64_t' has not been declared
/usr/include/rpi-hw/types.hpp:37: error: 'std::uint8_t' has not been declared

Any one know how to fix this in my Qt creator. I tried to add -std=gnu++11 in Projects->Build Steps-> Additional arguments but no luck

Please help.

Posted 5-May-14 19:02pm

Arun Kumar K S

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Sergey Alexandrovich Kryukov 6-May-14 1:44am

What's the point of your question?! The errors shown for C++ prior to C++11 are irrelevant to the problem.
You should have shown the errors you have after you added -std=gnu+11 or -std=c++11. Wasn't that obvious? When you say "no luck", you should have explained what went wrong.
—SA

Arun Kumar K S 6-May-14 3:28am

I tried to add -std=gnu++11 in Projects->Build Steps-> Additional arguments in Qt creator but that didn't solved the error.

Sergey Alexandrovich Kryukov 6-May-14 3:30am

We already knew that. Well, if you don't want to report these important detail on the errors you get, don't... :-) But aren't you trying to get some help?
—SA

Arun Kumar K S 6-May-14 3:41am

When I add -std=gnu++11 the compiler output like this 
 
 
07:36:03: The process "/usr/bin/qmake-qt4" exited with code 1. 
Error while building/deploying project untitled (target: Embedded Linux) 
When executing step 'qmake'

I added LIBS += -lrpihw library in pro file

and my main function is

#include <iostream>
#include <rpi-hw.hpp>
#include <rpi-hw driver="" i2c.hpp="">

using namespace std;
using namespace rpihw;

#define ID_I2C_SLAVE_ADDRESS 0x20
#define ID_I2C_DEV_PATH "/dev/i2c-0"

int main()
{

rpihw::driver::i2c objI2C(ID_I2C_DEV_PATH, ID_I2C_SLAVE_ADDRESS);

char *chData;
int iSize=0;
objI2C.write(chData, iSize);

cout << "Hello World!" << endl;
return 0;
}

and my RPi-hw library from https://github.com/Wicker25/Rpi-hw

Do I need to add any more information

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pitonyak · Accepted Answer · 2014-05-08T07:25:00

Solution 1

I use the following in my PRO files

Quote:
QMAKE_CXXFLAGS += -std=c++0x

Determine which flags are required by your compiler (and it looks like your error message makes two suggestions).

Posted 8-May-14 7:25am

pitonyak

Comments

Arun Kumar K S 9-May-14 1:41am

Many thanks...