CODEWITHSUNDEEP
c++macosg++
Josh Glover
Josh Glover

Reputation: 26170

How do I install g++ on MacOS X?

I want to compile C++ code on MacOS X, using the g++ compiler. How do I install it?

Upvotes: 32

Views: 212356

Answers (6)

William Rogers
William Rogers

Reputation: 31

Here is how to do it on the newer mac chips and how to switch from clang(default) to g++

  • Install g++ through home-brew.

  • Check out the version you just installed, probably 12th or higher

  • You can make a symbolic link from g++-12 to g++

In order to do it, just type in your terminal:

sudo ln -s $(which g++-12) /usr/local/bin/g++.

Now open a new terminal and check your version again and you should see g++ instead of clang

g++ --version

Upvotes: 3

Omnifarious
Omnifarious

Reputation: 56088

That's the compiler that comes with Apple's XCode tools package. They've hacked on it a little, but basically it's just g++.

You can download XCode for free (well, mostly, you do have to sign up to become an ADC member, but that's free too) here: http://developer.apple.com/technology/xcode.html

Edit 2013-01-25: This answer was correct in 2010. It needs an update.

While XCode tools still has a command-line C++ compiler, In recent versions of OS X (I think 10.7 and later) have switched to clang/llvm (mostly because Apple wants all the benefits of Open Source without having to contribute back and clang is BSD licensed). Secondly, I think all you have to do to install XCode is to download it from the App store. I'm pretty sure it's free there.

So, in order to get g++ you'll have to use something like homebrew (seemingly the current way to install Open Source software on the Mac (though homebrew has a lot of caveats surrounding installing gcc using it)), fink (basically Debian's apt system for OS X/Darwin), or MacPorts (Basically, OpenBSDs ports system for OS X/Darwin) to get it.

Fink definitely has the right packages. On 2016-12-26, it had gcc 5 and gcc 6 packages.

I'm less familiar with how MacPorts works, though some initial cursory investigation indicates they have the relevant packages as well.

Upvotes: 30

kobe24
kobe24

Reputation: 189

Type g++(or make) on terminal.

This will prompt for you to install the developer tools, if they are missing.

Also the size will be very less when compared to xcode

Upvotes: 6

All-Purpose Guru
All-Purpose Guru

Reputation: 11

xcode is now available for free from the app store. Just "buy it" (for free) and it will download. To get the command line tools go into preferences/downloads and "install command line compiler tools".

Instead of gcc you are using clang, but it works the same.

Upvotes: 1

Dave Dopson
Dave Dopson

Reputation: 42716

Installing XCode requires:

  • Enrolling on the Apple website (not fun)
  • Downloading a 4.7G installer

To install g++ *WITHOUT* having to download the MASSIVE 4.7G xCode install, try this package:

https://github.com/kennethreitz/osx-gcc-installer

The DMG files linked on that page are ~270M and much quicker to install. This was perfect for me, getting homebrew up and running with a minimum of hassle.

The github project itself is basically a script that repackages just the critical chunks of xCode for distribution. In order to run that script and build the DMG files, you'd need to already have an XCode install, which would kind of defeat the point, so the pre-built DMG files are hosted on the project page.

Upvotes: 10

Josh Glover
Josh Glover

Reputation: 26170

Download Xcode, which is free with an ADC online membership (also free):

http://developer.apple.com/technology/xcode.html

Upvotes: 4

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