C++ will not run on my mac, symbol(s) not found for architecture x86_64

Question

Heres the code, extremely basic Cpp

#include <iostream>
using namespace std;

int main(){
    cout << "C++ is FUN!\n";
    return 0;
}

The symbols that can not be found are "std" trying to use the name space, and "cout". the full error message is.

make: *** [FirstProject] Error 1    FirstProject            C/C++ Problem   
Symbol 'cout' could not be resolved FirstProgram.cpp    /FirstProject   line 5  Semantic Error    
Symbol 'std' could not be resolved  FirstProgram.cpp    /FirstProject   line 2  Semantic Error    
symbol(s) not found for architecture x86_64 FirstProject            C/C++ Problem

EDIT: here is the whole linker line:

make all 
Building target: FirstProject
Invoking: Cross G++ Linker
g++  -o "FirstProject"  ./FirstProgram.o   
Undefined symbols for architecture x86_64:
  "_main", referenced from:
     implicit entry/start for main executable
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [FirstProject] Error 1

Does anyone know what could potentially be the problem?

I added the console line to the post, and it is GCC, G++ isn't an option for me to choose in Eclipse — TopQuark, Jul 23 '14 at 14:12
`Invoking: Cross G++ Linker g++ -o "FirstProject" ./FirstProgram.o`... — Havenard, Jul 23 '14 at 14:15
@trojanfoe I don't know how to find the compiler line, or how to tell eclipse to compile in the answer below — TopQuark, Jul 23 '14 at 14:22
@user3570569, google that error and you will find solutions to overcome that error — Spikatrix, Jul 23 '14 at 14:33
If you are just starting C++ on OSX I would use Xcode as this should just work and only when you learn what the parts of a program are then use other IDEs - and note on recent OSX versions GNU compiler is not there by default it has clang — mmmmmm, Jul 23 '14 at 14:37

score 0 · Answer 1 · answered Jul 23 '14 at 14:12

0

You are not compiling using a C++ compiler.

If you are using the GNU toolchain then use g++ and not gcc.

answered Jul 23 '14 at 14:12

trojanfoe

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score 0 · Answer 2 · answered Jul 23 '14 at 14:14

0

You need to compile then link:

g++ -c -o FirstProgram.o FirstProgram.c
g++ -o FirstProject FirstProgram.o

Or you can combine into one statement:

g++ -o FirstProject FirstProgram.c

answered Jul 23 '14 at 14:14

Thomas Matthews

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C++ will not run on my mac, symbol(s) not found for architecture x86_64

2 Answers2