macOS Error found when compiling

[CuteBoA]

Line Location Tool:0: Command /Developer/usr/bin/g++-4.0 failed with exit code 1


Line Location Tool:0: duplicate symbol _main in /Users/indahandriani/Desktop/a/build/a.build/Debug/a.build/Objects-normal/i386/a.o and /Users/indahandriani/Desktop/a/build/a.build/Debug/a.build/Objects-normal/i386/main.o


hello, anyone know whats the problem with that? and what should i do with that?
thank you!

 

[lloyddean]

Are you compiling from the command line, or an Xcode project file?

 

[CuteBoA]

Are you compiling from the command line, or an Xcode project file?

.cpp one..

 

[Reason077]

The problem is that you are compiling/linking two different files which both have a main() function. There can only be one main() in your application.

 

[CuteBoA]

The problem is that you are compiling/linking two different files which both have a main() function. There can only be one main() in your application.

how can I fixed it then? HELP!

 

[lloyddean]

Please tell us how you are compiling your source files?

 

[Cromulent]

.cpp one..

That answer doesn't really mean much. Are you compiling on the command line or from within Xcode? If you are compiling from within Xcode it already has a default main() function defined so you don't need to define your own (assuming you chose the correct project template).

 

[CuteBoA]

That answer doesn't really mean much. Are you compiling on the command line or from within Xcode? If you are compiling from within Xcode it already has a default main() function defined so you don't need to define your own (assuming you chose the correct project template).

im still pretty confused with how Xcode works.. what is command line?
usually i write my program in .cpp file, and then i press build and debug..
so what does that meann?
i never had this kind of problem before..

i usually compile the one with. xcodeproj

 

[lloyddean]

i usually compile the one with. xcodeproj

OK, we now understand you are using Xcode.

Could you tell us how many files end in either ".c", ".cp" or ".cpp". As well as their names!

 

[CuteBoA]

OK, we now understand you are using Xcode.

Could you tell us how many files end in either ".c", ".cp" or ".cpp". As well as their names!

aaa.cpp
main.cp
TApplication.cp
TCarbonEvent.cp
TEventHandler.cp
TNib.cp
TWindow.cp

thats it!

 

[lloyddean]

The easiest way to help is to have you create a new project with the setting you see below. Name the project whatever seems appropriate to you.



Once the project is open you'll see it contains a file "main.cpp".



Open "main.cpp" replacing it's contents with yours.

Compile, run and enjoy!!!

 

[CuteBoA]

The easiest way to help is to have you create a new project with the setting you see below. Name the project whatever seems appropriate to you.

View attachment 220936

Once the project is open you'll see it contains a file "main.cpp".

View attachment 220937


Compile, run and enjoy!!!

i cant seem to find how to make mine like the first picture..
what should i do to make that box appear?

 

[lloyddean]

You are running an older version of Xcode, so select "Command Line Utility" from the list on the left side of that Dialog-Window. The content on the right side may change allowing you to choose a C++ type project, which is what you want!

 

[chown33]

Post your OS version and Xcode version.

OS version:
https://wiki.csuchico.edu/confluence/display/usrvkb/Checking+your+Mac+OS+Version

Xcode version:
Launch Xcode. Choose About Xcode from the Xcode menu.

 

[CuteBoA]

You are running an older version of Xcode, so select "Command Line Utility" from the list on the left side of that Dialog-Window. The content on the right side may change allowing you to choose a C++ type project, which is what you want!

it works now!! thank you so much for helping me!