我正在使用C ++学习原理和实践，并且遇到了与我正在使用Apple计算机的正确架构有关的问题，我的编译器是gcc版本4.2.1（基于Apple Inc. build 5658）（LLVM构建） 2336.1.00） 当我
file /usr/lib/libffi.dylib
/usr/lib/libffi.dylib: Mach-O universal binary with 2 architectures
/usr/lib/libffi.dylib (for architecture x86_64): Mach-O 64-bit dynamically linked shared library x86_64
/usr/lib/libffi.dylib (for architecture i386): Mach-O dynamically linked shared library i386
我在这里有两个架构/库可用于编译我的程序
g++ -Wall chapter.12.3.cpp -o chapter.12.3
In file included from GUI.h:11,
from Simple_window.h:10,
from chapter.12.3.cpp:7:
Graph.h: In constructor ‘Graph_lib::Color::Color(Graph_lib::Color::Color_type)’:
Graph.h:56: warning: ‘Graph_lib::Color::c’ will be initialized after
Graph.h:55: warning: ‘char Graph_lib::Color::v’
Graph.h:45: warning: when initialized here
Graph.h: In constructor ‘Graph_lib::Color::Color(Graph_lib::Color::Color_type, Graph_lib::Color::Transparency)’:
Graph.h:56: warning: ‘Graph_lib::Color::c’ will be initialized after
Graph.h:55: warning: ‘char Graph_lib::Color::v’
Graph.h:46: warning: when initialized here
Graph.h: In constructor ‘Graph_lib::Color::Color(int)’:
Graph.h:56: warning: ‘Graph_lib::Color::c’ will be initialized after
Graph.h:55: warning: ‘char Graph_lib::Color::v’
Graph.h:47: warning: when initialized here
Graph.h: In constructor ‘Graph_lib::Color::Color(Graph_lib::Color::Transparency)’:
Graph.h:56: warning: ‘Graph_lib::Color::c’ will be initialized after
Graph.h:55: warning: ‘char Graph_lib::Color::v’
Graph.h:48: warning: when initialized here
Graph.h: In constructor ‘Graph_lib::Rectangle::Rectangle(Point, int, int)’:
Graph.h:211: warning: ‘Graph_lib::Rectangle::w’ will be initialized after
Graph.h:210: warning: ‘int Graph_lib::Rectangle::h’
Graph.h:194: warning: when initialized here
Graph.h: In constructor ‘Graph_lib::Rectangle::Rectangle(Point, Point)’:
Graph.h:211: warning: ‘Graph_lib::Rectangle::w’ will be initialized after
Graph.h:210: warning: ‘int Graph_lib::Rectangle::h’
Graph.h:200: warning: when initialized here
In file included from Simple_window.h:10,
from chapter.12.3.cpp:7:
GUI.h: In member function ‘virtual void Graph_lib::Menu::show()’:
GUI.h:107: warning: comparison between signed and unsigned integer expressions
GUI.h: In member function ‘virtual void Graph_lib::Menu::hide()’:
GUI.h:112: warning: comparison between signed and unsigned integer expressions
GUI.h: In member function ‘virtual void Graph_lib::Menu::move(int, int)’:
GUI.h:117: warning: comparison between signed and unsigned integer expressions
Graph.h: In destructor ‘Graph_lib::Vector_ref<T>::~Vector_ref() [with T = Graph_lib::Button]’:
GUI.h:96: instantiated from here
Graph.h:130: warning: comparison between signed and unsigned integer expressions
Undefined symbols for architecture x86_64:
"Simple_window::Simple_window(Point, int, int, String const&)", referenced from:
_main in ccarbqNp.o
"Graph_lib::Polygon::add(Point)", referenced from:
_main in ccarbqNp.o
"Simple_window::wait_for_button()", referenced from:
_main in ccarbqNp.o
"Graph_lib::Shape::Shape()", referenced from:
Graph_lib::Open_polyline::Open_polyline()in ccarbqNp.o
"vtable for Graph_lib::Open_polyline", referenced from:
Graph_lib::Open_polyline::Open_polyline()in ccarbqNp.o
"vtable for Graph_lib::Open_polyline", referenced from:
Graph_lib::Open_polyline::Open_polyline()in ccarbqNp.o
Graph_lib::Open_polyline::~Open_polyline()in ccarbqNp.o
NOTE: a missing vtable usually means the first non-inline virtual member function has no definition.
"vtable for Graph_lib::Closed_polyline", referenced from:
Graph_lib::Closed_polyline::Closed_polyline()in ccarbqNp.o
Graph_lib::Closed_polyline::~Closed_polyline()in ccarbqNp.o
NOTE: a missing vtable usually means the first non-inline virtual member function has no definition.
"vtable for Graph_lib::Polygon", referenced from:
Graph_lib::Polygon::Polygon()in ccarbqNp.o
Graph_lib::Polygon::~Polygon()in ccarbqNp.o
NOTE: a missing vtable usually means the first non-inline virtual member function has no definition.
"vtable for Graph_lib::Shape", referenced from:
Graph_lib::Shape::~Shape()in ccarbqNp.o
NOTE: a missing vtable usually means the first non-inline virtual member function has no definition.
"vtable for Graph_lib::Button", referenced from:
Graph_lib::Button::~Button()in ccarbqNp.o
NOTE: a missing vtable usually means the first non-inline virtual member function has no definition.
"vtable for Graph_lib::Window", referenced from:
Graph_lib::Window::~Window()in ccarbqNp.o
NOTE: a missing vtable usually means the first non-inline virtual member function has no definition.
"Fl_Window::~Fl_Window()", referenced from:
Graph_lib::Window::~Window()in ccarbqNp.o
"Graph_lib::Window::draw()", referenced from:
vtable for Simple_windowin ccarbqNp.o
"Fl_Window::handle(int)", referenced from:
vtable for Simple_windowin ccarbqNp.o
"Fl_Window::resize(int, int, int, int)", referenced from:
vtable for Simple_windowin ccarbqNp.o
"Fl_Window::show()", referenced from:
vtable for Simple_windowin ccarbqNp.o
"Fl_Window::hide()", referenced from:
vtable for Simple_windowin ccarbqNp.o
"Fl_Window::flush()", referenced from:
vtable for Simple_windowin ccarbqNp.o
"typeinfo for Graph_lib::Window", referenced from:
typeinfo for Simple_windowin ccarbqNp.o
ld: symbol(s) not found for architecture x86_64
collect2: ld returned 1 exit status
Compilation exited abnormally with code 1 at Fri Oct 21 12:48:23
当我检查lib文件构建的内容时，我得到：
/usr/local/lib/libbookgui.a: current ar archive random library