Using C Libraries for C++ Programs

Question

I am trying to control Dynamixel servos using a GUI made using Qt. Dynamixel provides a C set of C libraries to control the motors, while the only way of making GUI\'s I kno

Answer 1

Yes. To use C library function use extern "C" as below in your .cpp program , myprog.cpp

extern "C" {
    // C Function call
    cfunc();
}

int main()
{
    cfunc();
    return 0;
}

This cfunc should be defined in c library as below prog.c

#include 

void cfunc()
{
   printf("This is from c library");
}

Then you need to create .o object file and .so shared object files for your C library as below

$] gcc -c prog.c -o prog
$] gcc -shared -o libprog.so prog.o

$] export LD_LIBRARY_PATH=/path/to/clibrary:$LD_LIBRARY_PATH
$] g++ -L/path/to/clibrary myprog.cpp -o myprog.o -lprog