User profile for user: Mazam1212
Mazam1212 Author
User level: Level 1
0 points

Clang and G not compiling correctly

Currently I am having issues compiling programs in Terminal. I have the latest version of the dev tools and updated version of Xcode. This is the current error that I have when I compile with gcc and clang. G++ does not return anything.


Program I am trying to run:


// myfirst.cpp -- displays a message


#include <iostream>

int main()

{

using namespace std;

}

cout << "Come up and C++ me some time.";

cout << endl;

cout << "You won't regret it!" << endl;

return 0;


error message:

Undefined symbols for architecture x86_64:

"std::__1::locale::use_facet(std::__1::locale::id&) const", referenced from:

std::__1::basic_ostream<char, std::__1::char_traits<char> >& std::__1::endl<char, std::__1::char_traits<char> >(std::__1::basic_ostream<char, std::__1::char_traits<char> >&) in myfirst-3e8045.o

std::__1::basic_ostream<char, std::__1::char_traits<char> >& std::__1::__put_character_sequence<char, std::__1::char_traits<char> >(std::__1::basic_ostream<char, std::__1::char_traits<char> >&, char const*, unsigned long) in myfirst-3e8045.o

"std::__1::ios_base::getloc() const", referenced from:

std::__1::basic_ostream<char, std::__1::char_traits<char> >& std::__1::endl<char, std::__1::char_traits<char> >(std::__1::basic_ostream<char, std::__1::char_traits<char> >&) in myfirst-3e8045.o

std::__1::basic_ostream<char, std::__1::char_traits<char> >& std::__1::__put_character_sequence<char, std::__1::char_traits<char> >(std::__1::basic_ostream<char, std::__1::char_traits<char> >&, char const*, unsigned long) in myfirst-3e8045.o

"std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::__init(unsigned long, char)", referenced from:

std::__1::ostreambuf_iterator<char, std::__1::char_traits<char> > std::__1::__pad_and_output<char, std::__1::char_traits<char> >(std::__1::ostreambuf_iterator<char, std::__1::char_traits<char> >, char const*, char const*, char const*, std::__1::ios_base&, char) in myfirst-3e8045.o

"std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::~basic_string()", referenced from:

std::__1::ostreambuf_iterator<char, std::__1::char_traits<char> > std::__1::__pad_and_output<char, std::__1::char_traits<char> >(std::__1::ostreambuf_iterator<char, std::__1::char_traits<char> >, char const*, char const*, char const*, std::__1::ios_base&, char) in myfirst-3e8045.o

"std::__1::basic_ostream<char, std::__1::char_traits<char> >::put(char)", referenced from:

std::__1::basic_ostream<char, std::__1::char_traits<char> >& std::__1::endl<char, std::__1::char_traits<char> >(std::__1::basic_ostream<char, std::__1::char_traits<char> >&) in myfirst-3e8045.o

"std::__1::basic_ostream<char, std::__1::char_traits<char> >::flush()", referenced from:

std::__1::basic_ostream<char, std::__1::char_traits<char> >& std::__1::endl<char, std::__1::char_traits<char> >(std::__1::basic_ostream<char, std::__1::char_traits<char> >&) in myfirst-3e8045.o

"std::__1::basic_ostream<char, std::__1::char_traits<char> >::sentry::sentry(std::__1::basic_ostream<char, std::__1::char_traits<char> >&)", referenced from:

std::__1::basic_ostream<char, std::__1::char_traits<char> >& std::__1::__put_character_sequence<char, std::__1::char_traits<char> >(std::__1::basic_ostream<char, std::__1::char_traits<char> >&, char const*, unsigned long) in myfirst-3e8045.o

"std::__1::basic_ostream<char, std::__1::char_traits<char> >::sentry::~sentry()", referenced from:

std::__1::basic_ostream<char, std::__1::char_traits<char> >& std::__1::__put_character_sequence<char, std::__1::char_traits<char> >(std::__1::basic_ostream<char, std::__1::char_traits<char> >&, char const*, unsigned long) in myfirst-3e8045.o

"std::__1::cout", referenced from:

_main in myfirst-3e8045.o

"std::__1::ctype<char>::id", referenced from:

std::__1::basic_ostream<char, std::__1::char_traits<char> >& std::__1::endl<char, std::__1::char_traits<char> >(std::__1::basic_ostream<char, std::__1::char_traits<char> >&) in myfirst-3e8045.o

std::__1::basic_ostream<char, std::__1::char_traits<char> >& std::__1::__put_character_sequence<char, std::__1::char_traits<char> >(std::__1::basic_ostream<char, std::__1::char_traits<char> >&, char const*, unsigned long) in myfirst-3e8045.o

"std::__1::locale::~locale()", referenced from:

std::__1::basic_ostream<char, std::__1::char_traits<char> >& std::__1::endl<char, std::__1::char_traits<char> >(std::__1::basic_ostream<char, std::__1::char_traits<char> >&) in myfirst-3e8045.o

std::__1::basic_ostream<char, std::__1::char_traits<char> >& std::__1::__put_character_sequence<char, std::__1::char_traits<char> >(std::__1::basic_ostream<char, std::__1::char_traits<char> >&, char const*, unsigned long) in myfirst-3e8045.o

"std::__1::ios_base::__set_badbit_and_consider_rethrow()", referenced from:

std::__1::basic_ostream<char, std::__1::char_traits<char> >& std::__1::__put_character_sequence<char, std::__1::char_traits<char> >(std::__1::basic_ostream<char, std::__1::char_traits<char> >&, char const*, unsigned long) in myfirst-3e8045.o

"std::__1::ios_base::clear(unsigned int)", referenced from:

std::__1::basic_ostream<char, std::__1::char_traits<char> >& std::__1::__put_character_sequence<char, std::__1::char_traits<char> >(std::__1::basic_ostream<char, std::__1::char_traits<char> >&, char const*, unsigned long) in myfirst-3e8045.o

"std::terminate()", referenced from:

___clang_call_terminate in myfirst-3e8045.o

"___cxa_begin_catch", referenced from:

___clang_call_terminate in myfirst-3e8045.o

std::__1::basic_ostream<char, std::__1::char_traits<char> >& std::__1::__put_character_sequence<char, std::__1::char_traits<char> >(std::__1::basic_ostream<char, std::__1::char_traits<char> >&, char const*, unsigned long) in myfirst-3e8045.o

"___cxa_end_catch", referenced from:

std::__1::basic_ostream<char, std::__1::char_traits<char> >& std::__1::__put_character_sequence<char, std::__1::char_traits<char> >(std::__1::basic_ostream<char, std::__1::char_traits<char> >&, char const*, unsigned long) in myfirst-3e8045.o

"___gxx_personality_v0", referenced from:

std::__1::basic_ostream<char, std::__1::char_traits<char> >& std::__1::endl<char, std::__1::char_traits<char> >(std::__1::basic_ostream<char, std::__1::char_traits<char> >&) in myfirst-3e8045.o

std::__1::basic_ostream<char, std::__1::char_traits<char> >& std::__1::__put_character_sequence<char, std::__1::char_traits<char> >(std::__1::basic_ostream<char, std::__1::char_traits<char> >&, char const*, unsigned long) in myfirst-3e8045.o

std::__1::ostreambuf_iterator<char, std::__1::char_traits<char> > std::__1::__pad_and_output<char, std::__1::char_traits<char> >(std::__1::ostreambuf_iterator<char, std::__1::char_traits<char> >, char const*, char const*, char const*, std::__1::ios_base&, char) in myfirst-3e8045.o

Dwarf Exception Unwind Info (__eh_frame) in myfirst-3e8045.o

ld: symbol(s) not found for architecture x86_64

clang: error: linker command failed with exit code 1 (use -v to see invocation)


looked online at other forums, no solution beside reinstalling operating system found. i would kind of like to avoid that.

Posted on Jan 29, 2015 7:34 PM

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3 replies
User profile for user: etresoft
etresoft
User level: Level 9
56,686 points

Jan 30, 2015 4:22 AM in response to Mazam1212

You do not need to reinstall the OS. You omitted the only line that has any significance - what you actually typed to attempt to compile this.


It looks like you probably tried: "gcc foo.cpp". That won't work. You have to include the C++ headers and library. The g++ or clang++ executables will do that for you. There is no "G++".


Finally, your code is wrong. You have to move your closing brace to the very end.

Reply
User profile for user: etresoft
etresoft
User level: Level 9
56,686 points

Jan 30, 2015 4:54 PM in response to Mazam1212

Typically, if you are just learning, or trying something out, you would compile a single source file with something like this:

clang++ foo.cpp


This would create an executable named "a.out" that you can run in the Terminal with "./a.out"


If you start getting more complex, you can compile multiple files and give it a meaningful name:

clang++ -o foo foo.cpp subfoo.cpp another.cpp


You could run this with just "./foo". Eventually, typing everything out on the command line gets old and tedious. You will have to progress to either a Makefile or an IDE like Xcode.

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Clang and G not compiling correctly

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