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How do I install Apple Developer Tools on my Mac?

I seem to recall a long time ago that when you installed Mac OS X you also got a bunch of cool Unix command line developer tools, including a C compiler, debugging tools and much more. I'm taking a C programming class at the local community college and would like to install these tools, but have no idea where they are any more. Help?


Dave's Answer:

Ah yes, join us now as we travel back in time and visit the software development environment of yesteryear, the Unix command line. Thrill as we see obfuscated error messages from the C compiler, gasp as we come face to face with "vi" and weep in anticipatory frustration as we try to use "gdb" to figure out what the heck's wrong with our simple "hello world" application.

Actually, I have always enjoyed programming in C and have written some quite massive applications in the language. I still dabble in the language, actually, as I find it to be fast, flexible and logical for tasks that can't be forced into a shell script template. I tried object-oriented programming and was even a professional LISP programmer for a while, but never quite wrapped my brain about the concept.

Anyway, Apple does include a C development environment - and quite a bit more - with every copy of Leopard, along with earlier versions of Mac OS X, but truth be told, you need to know one key thing: the Apple development environment toolset is called Xcode.

Now you can drop your install (or restore) disk into your drive and know how to proceed. I am going to be working off an original Leopard OS, but XCode is included with all modern releases of Mac OS X, as far as I am aware.

When you open up the install DVD, you'll see that in addition to the cool "Install Mac OS X" icon, there's also a folder labeled "Optional Installs". That's what you want.

Within there's an icon labeled "Optional Installs.mpkg". That's not what you want, so don't click on it. Instead, go into the folder "Xcode Tools", where you'll see three installers: "Dashcode.pkg", "WebObjects.mpkg" and "XcodeTools.mpkg".

Double-click on "XcodeTools.mpkg" to get started.

Get past the license agreements (yawn) and click on "Customize" and you'll see what's about to be installed:

Mac OS X: Install Xcode Tools

The key one to ensure you have selected is "UNIX Development Support" which gives you access to all the handy commands and tools you seek.

Given that you aren't developing Mac applications with a GUI but want to just experiment with the C language, I suggest that you unselect "Core Reference Library", which is described by Apple as:

"An Xcode documentation set consisting of Apple's Mac OS X and Developer Tools technical resources, including Guides, Reference, Release Notes, Sample Code, Technical Notes, and Technical Q&As. This content is relocatable and placed inside a location chosen by the user (default is /Developer on the boot volume)."
After dropping that off the list, it's still a fairly substantial installation of 1.9GB, but I have a sense we can prune that down further once everything's added, which I'll do by clicking on "Install".

About ten minutes later, it's installed and I quit the install program and open up, of course, a Terminal window (Applications -> Utilities -> Terminal.app) and immediately move to "/Developer" to see what's new:

$ cd /Developer
$ ls
About Xcode Tools.pdf Headers/ SDKs/
Applications/ Icon? Tools/
Documentation/ Library/ usr/
Examples/ Makefiles/
Extras/ Private/

We could dig into things and prune down the installation at this point, as shown here:

$ du -sh *
84K About Xcode Tools.pdf
182M Applications
378M Documentation
148M Examples
3.0M Extras
1.8M Headers
169M Library
1.2M Makefiles
148K Private
353M SDKs
256K Tools
149M usr

but, really, let's get into playing with the tools instead. Far more fun.

It turns out that all the tools are tucked into "/Developer/usr/bin". Go there and you'll find all your favorite developer apps, from ar and cpp to cvs, flex, gcc (the key app: that's the GNU C compiler), lex, m4 and, oh, so many more tools that will bring a tear of joy to your geeky command line eye. :-)

And so, a simple C program:

#include <stdio.h>

main()
{
  printf("Aloha, bruddas!\n");
}

Compiled and run:

$ gcc aloha.c -o aloha
$ ./aloha
Aloha, bruddas!
$

Now we're rockin'. At least, in an old-school programmer geek sense. :-)









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Comments

Thanks Dave for your great tutorials, I just like to point out that it is also possible to download the developer tools from here: http://developer.apple.com/

Posted by: Andrea Belvedere at July 2, 2009 5:16 PM

Hello.


Google bought me here.

I installed Xcode without UNIX support long time ago, and now I'm trying to add it, but when I run the installer it is disable.


Is there something I can do about it?

Thanks in advance.

Posted by: Oscar at April 22, 2010 12:33 PM

After Googleing and reading Apple carefully I just found the answer:

If the "Unix Development Support" option is disabled, it's because you have the WRONG version of XTools for the MacOS X that now you have. For example if you have updated to Snow Leopard, then the XCode 3.1 does NOT be able to install the "Unix Development Support", so to fix this problem download the XCode 3.2 or other newer version that supports your Mac OS X version.

Posted by: Carlos at April 27, 2010 6:45 PM

This was a wonderful reference tool for me--I'm using my boyfriend's Mac for my intro to C++ class and had no clue how to go about installing Xcode.

This is definitely easier than going through the apple developer site....thank you so much!!

Posted by: Aileen at May 1, 2010 3:22 PM

my mac osx install disc installs Xcode 3.0 onto my computer when i run it but when installing macports Wine the installer says i need Xcode 3.1 but i can't find any way to update from 3.0 - 3.1 without redownloading the whole thing again and i can't download the whole 950 mb file over my iphone as modem.
Is it possible to update from 3.0 to 3.1?

Posted by: Aram Madigan at May 7, 2010 1:00 AM

It works! Thanks for the detailed info.

Posted by: MR.Tao at December 1, 2011 12:13 AM

I have something to say, now that you mention it, but ...
Starbucks coffee cup I do have a lot to say, and questions of my own for that matter, but first I'd like to say thank you for all your efforts on this Web site by buying you a cup of coffee!

I do have a comment, now that you mention it!











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