how initialize char* const argv [] in c++

An API function takes an argument of type 'char *const argv[]' I am initializing this type of arguments in my c++ application like:

char* const  argv[] = {"--timeout=0", NULL}; 

and passing the arguments to API function like:

Spawner spawner;
spawner.execute (argv, true);

using g++ compiler, I am getting following Error:

error: deprecated conversion from string constant to 'char*' [-Werror=write-strings]

how can I get rid of above error?

Below is the declaration of execute function in API:

void Spawner::execute (char *const argv[], bool bShowChildWindow)