develop c++ without Xcode IDE
I want to develop c++ programs on mac os and I have installed Xcode with a bunch of frameworks.
However I would like to write code without Xcode IDE but just write my own makefile and directly compile/link with gcc (shipped with Xcode).
Take a opengl program as example
I tried to compile it with the command
gcc -I/usr/include/ -I/Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/GLUT.framework/Headers/ -I/Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/OpenGL.framework/Headers -L/usr/lib -L/usr/X11/lib/ -L/Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/OpenGL.framework/Libraries/ -lGL -lGLU -lGLUTt main.cpp
or
gcc -I/usr/include/ -L/usr/lib -framework OpenGL -framework GLUT -lm main.cpp
But they ended up with linking error
Undefined symbols:
"std::basic_ostream
::operator<<(long)", referenced from: reshape(int, int)in ccKBRSF9.o display() in ccKBRSF9.o "___gxx_personality_v0", referenced from: ___gxx_personality_v0$non_lazy_ptr in ccKBRSF9.o (maybe you meant: ___gxx_personality_v0$non_lazy_ptr) "std::ios_base::Init::~Init()", referenced from: ___tcf_0 in ccKBRSF9.o "std::basic_string, std::allocator ::operator[](unsigned long) const", referenced from: std::__verify_grouping(char const*, unsigned long, std::basic_string, std::allocator > const&)in ccKBRSF9.o std::__verify_grouping(char const*, unsigned long, std::basic_string, std::allocator > const&)in ccKBRSF9.o std::__verify_grouping(char const*, unsigned long, std::basic_string, std::allocator > const&)in ccKBRSF9.o "std::basic_ostream >& std::operator<< (std::basic_ostream >&, char const*)", referenced from: keyboard(unsigned char, int, int)in ccKBRSF9.o keyboard(unsigned char, int, int)in ccKBRSF9.o keyboard(unsigned char, int, int)in ccKBRSF9.o reshape(int, int)in ccKBRSF9.o display() i n ccKBRSF9.o "std::ios_base::Init::Init()", referenced from: __static_initialization_and_destruction_0(int, int)in ccKBRSF9.o
"std::basic_string, std::allocator >::size() const", referenced from: std::__verify_grouping(char const*, unsigned long, std::basic_string, std::allocator > const&)in ccKBRSF9.o "std::cout", referenced from: __ZSt4cout$non_lazy_ptr in ccKBRSF9.o (maybe you meant: __ZSt4cout$non_lazy_ptr) ld: symbol(s) not found collect2: ld returned 1 exit status
Did I miss something?
Use g++ to compile C++. It's the C++ front-end for GCC. Eg:
g++ -I/usr/include/ -L/usr/lib -framework OpenGL -framework GLUT -lm main.cpp
你也可以使用clang++ ，但在这两种情况下，你将不得不使用C++编译器或-lstdc++选项。
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