id summary reporter owner description type status milestone component version severity resolution keywords cc 11165 using cpp_int and other integer types gives unknown type name 'cpp_int' error when compiled on Xcode 6 on a macbook. yavuz@… John Maddock "#include #include int main(int argc, const char * argv[]) { using namespace boost::multiprecision; cpp_int factorial = 1; return 0; } BTW, since boost installation doesn't specify where boost should be installed, I installed it in my home directory and that led me to writing out the path to it in the include directive. Otherwise, include gives an error message." Bugs closed To Be Determined multiprecision Boost 1.57.0 Problem worksforme