GCC for Mac OS X. To: gcc at gcc dot gnu dot org; Subject: GCC for Mac OS X; From: Stan Shebs Date: Fri, 11 Feb 2000 15:34:31 -0800; Organization: Core Tools; Reply-To. The GNU Compiler Collection or GCC for short, comprises front ends for C, Objective-C, C, Java, Fortran, Go and Ada, along with libraries for the mentioned languages. GCC us the main component of the GNU toolchain, it is distributed under the GNU General Public License and plays a central role in the. Unzip the compressed file and then launch the Code Blocks application. This should take a few. Open up a new Terminal window in your home directory, type cd gcc-4.2.0 and then ls to verify its all in there. Next, c reate another directory to install gcc into. To go back into the home directory, then type: mkdir avrgcc-4.2 (substituting your gcc version for the 4.2) Navigate to the folder you created. Gcc for mac free download. MSYS2 MSYS2 is a collection of tools and libraries providing you with an easy-to-use environment for build.
https://launchpad.net/gcc-arm-embedded offers recent prebuilt toolchains for Win/Linux/Mac. When installing from a zip/bz2 file, extract to a sensible path on your system and add the resulting bin directory to your path.
Information below is just kept for reference.
Update (2007-04-20): added Mac OS X Intel version
This package is intended for and was tested with small ARM microcontrollers like LPC21xx, AT91SAM7, ST7, ADuC7000, but should work for any system supported by arm-elf. Take a look at the configuration of the components below to find out whether it suits your application.
Content (Build 2)
This build is similar to Martin Thomas' WinARM package. The main difference to GNUARM is that in WinARM and this build Newlib is compiled with the option -DREENTRANT_SYSCALLS_PROVIDED, as recommended in Bill Gatliff's article 'Porting and Using Newlib in Embedded Systems'.
Gcc Macro For Function Name
- Binutils 2.16.1 configured with
--target=arm-elf --enable-interwork --enable-multilib
- GCC 4.1.0 with patched t-arm-elf, configured with
--target=arm-elf --enable-interwork --enable-multilib --enable-languages='c,c++' --with-newlib
- Newlib 1.14.0 configured with
--target=arm-elf --enable-interwork --enable-multilib
and-DREENTRANT_SYSCALLS_PROVIDED
- GDB 6.4 configured with
--target=arm-elf --enable-interwork --enable-multilib
Everything is built with --prefix=/usr/local/arm
. The Linux version is compiled with Debian Sarge, the Mac OS X PPC version with 10.3 (Panther), the Mac OS Intel Version with 10.4 (Tiger). All binaries are stripped. The build process on Linux and Mac OS X is identical.
Download
- Build 2 - Mac OS X Intel (32 MB) (compiled by Darrik Spaude)
Installation
Support forum
Related websites
- GNUARM: Linux, Windows and outdated Mac OS X builds of GCC+Newlib+GDB
- Zylin.com GCC+GDB binaries for arm-elf, cortex, xscale, mips-elf, powerpc-eabi targets, platforms, hosted on Windows MinGW, Crossbuild Windows hosted from Debian, Cygwin,Linux,Mac x86 or Mac PowerPC
- YAATOBS an ARM toolchain build script
Installing G++ on a Mac
This section is intended to get you quickly started with C++ programming on your Mac. We'll be installing GCC 4.8.1 and GDB through a tool called Homebrew. If you want an additional guide on all of the following steps (except for installing GCC), the one by Moncef Belyamani is quite helpful. When you follow it, ignore anything about installing Ruby; that is, stop after setting up git.
Homebrew
Homebrew 'installs the stuff that you need that Apple don't'. It's like Ubuntu's apt-get, where one can install packages easily from repositories. Instead of having to download, configure, and install something yourself, all you need to do is run one command, and Homebrew will take care of the rest for you.
Pre-requisites
Homebrew requires that you have either Xcode or the Xcode command line tools installed on your Mac. Xcode is a free integrated development environment similar to Eclipse designed by Apple and mainly intended for iOS development or targeting the clang
compiler. In this class, we will focus on gcc
.
Xcode is quite a big install, so if you do not want to install it, you can get away with just installing the Xcode command line tools. See a Stackoverflow discussion for instructions on how to install the command line tools regardless of whether you have Xcode installed.
Installing Homebrew
You need xcode command line tools to install Homebrew. It is very easy to install Homebrew. Open your terminal, and run the following command:
If this doesn't seem to do anything, try killing it (CTRL C) and running it again. Or checkout homebrew website.

GCC and GDB
Installing GCC
First of all, you should make sure that your Homebrew is up-to-date. Check to see if it is so with the following:
As mentioned before, installing packages with Homebrew is very easy. First, we will add the repository from which the GCC package is available, so that Homebrew knows where to find the package we want. The repository is at https://github.com/Homebrew/homebrew-versions.
We do this by using the brew-tap
command. Keep your terminal open, and run the following command. (For more information on how brew-tap works, visit the Homebrew docs):
Next, we will actually install the GCC package. Run the following command:
It might take long time before the installation is complete. If you run into any issues, you can debug with:
Cygwin For Mac
When done, run the following:
Compiler For Mac
The result should look like this:
USC Wireless Warning
Many people have had issues running the brew install
commands while connected to USC Wireless. If you are having trouble, you can either try using a wired connection, a different wireless connection, or do the following:
- Download a homebrew cache
- Open Finder, press CMD (command) + SHIFT + G and type
/Library/Caches/Homebrew
Extract the contents of the .zip you downloaded inside of the folder you opened in the previous step. Do not extract any of the .tar.bz2 or .tar.gz inside of the .zip folder.This should look as follows:
Run
brew install gcc48
in the Terminal as instructed above.
Using G++
To compile with the newly installed G++ compiler, use g++-4.8
.
(Advanced) Aliasing g++
If you prefer calling g++ directly, you can also create a bash alias, as follows:
Put these two lines at the end of the file ~/.bashrc
, and run:source ~/.bashrc
For more information on bash alias, take a look at the GNU Docs.

Installing GDB
Here also we use Homebrew. The following instruction has been taken from GDB on OS X Mavericks and Xcode 5 guide. To install, run the following brew command.
Check if it's installed:
The result should be gdb version 7 or higher.
Codesigning gdb
gdb is not going to debug yet. You'll get an error message like 'please check gdb is codesigned'. You need to create a certificate and sign gdb. By doing so you're telling the operating system that gdb is authorized to attach to other processes for debugging purposes. The following instructions have been taken from this Code Signing guide.
- Open application 'Keychain Access' (/Applications/Utilities/Keychain Access.app)
In Keychain Access, select the 'login' keychain in the 'Keychains' list in the upper left hand corner of the window.
Open the menu item in /Keychain Access/Certificate Assistant/Create a Certificate...
Choose a name ('lldb_codesign' in the example, but you can use anything you want), set 'Identity Type' to 'Self Signed Root', and set 'Certificate Type' to 'Code Signing'. Click 'Create'.
Click continue, continue and done.
Click on the “My Certificates” category on the left side and double click on the new “lldb_codesign” certificate.
Open the context menu for 'Trust' (click the triangle) and change the following:
When using this certificate: Always Trust
Now close this window, and enter your login password to confirm this change.
Option-drag (this meaning holding the option key down and dragging) the new 'lldb_codesign' certificate from the login keychain to the System keychain in the Keychains pane of the main Keychain Access window to make a copy of this certificate in the System keychain. You'll have to authorize a few more times, set it to be 'Always trusted' when asked.
Switch to the 'System' keychain and drag a copy of the 'lldb_codesign' you just made onto the Desktop.
Switch to Terminal and then run the following command (copy paste it!):
sudo security add-trust -d -r trustRoot -p basic -p codeSign -k /Library/Keychains/System.keychain ~/Desktop/lldb_codesign.cer
Then right click on the 'lldb_codesign' certificate in the 'System' keychain (not 'Login') and select 'delete' to delete it from the 'System' keychain.
Then reboot your system/computer.
Finally you can sign gdb:
codesign -s lldb_codesign /usr/local/bin/gdb
If this command doesn't work...then panic! Just kidding, be sure that you have gdb installed and that gdb is actually installed in /usr/local/bin. You may want to try 'which gdb' in your Terminal to figure out where it is.
Finally, remove the lldb_codesign.cer file that's sitting on your desktop, and gdb should be working at this point. :)