C++ Compiling with Python.h Undefined Symbols - c++

Question

So, I've been trying to start using Python.h for a little project I want to work on that seems pretty /simple/. But before I start I want to try to learn how to use Python.h.
So I found this little example online.
#include "Python/Python.h"
int main(int argc, char** argv)
{
Py_Initialize();
PyRun_SimpleString("print 'Test'");
PyRun_SimpleString("print str(3 + 5)");
Py_Exit(0);
}
Seems pretty straight forward. When i first used
gcc test.cpp
to compile, i got some undefined symbols. I quickly found out I should use
-lpython2.7
then I found out I could also use
-L/Library/Frameworks/Python.framework/Versions/2.7/lib/
that didn't work (I made sure that /Library/Frameworks/Python/Versions/2.7/lib/ existed)
I'm stuck, what do I do?
I get
Undefined symbols:
"_Py_Initialize", referenced from:
_main in ccoUOSlc.o
"_PyRun_SimpleStringFlags", referenced from:
_main in ccoUOSlc.o
_main in ccoUOSlc.o
"___gxx_personality_v0", referenced from:
_main in ccoUOSlc.o
CIE in ccoUOSlc.o
"_Py_Exit", referenced from:
_main in ccoUOSlc.o
ld: symbol(s) not found
collect2: ld returned 1 exit status
EDIT:
I just tried using the -Framework argument, and tried adding after the -L the -l python2.7 argument, and I now get
Undefined symbols:
"___gxx_personality_v0", referenced from:
_main in ccfvtJ4j.o
CIE in ccfvtJ4j.o
ld: symbol(s) not found
collect2: ld returned 1 exit status
Now what?

Answer 1

If you are using an Python framework installation on OS X as it appears you are based on the paths, you can use the -framework argument to the Apple compiler drivers:
cc test.cpp -framework Python
Alternatively, you can explicitly specify the directory path and library name:
cc test.cpp -L /Library/Frameworks/Python.framework/Versions/2.7/lib/ -l python2.7
Update: With the configuration you report in the comments (Xcode 3.2.6, gcc-4.2), it appears you need to explicitly invoke the c++ variant of gcc. Either:
g++ test.cpp -framework Python
or
c++ test.cpp -framework Python
should work.