- Thanks to James Wookey for the Intel Mac version of g77. Binaries: g77-bin.tar.gz (PowerPC only), g77-intel-bin.tar.gz (Intel Mac only), updated October 2006. Documentation: click here! F2C based Fortran: This is the oldest Fortran compiler available for OS X. Its been around since OS X was in a public beta state.
- Gcc is the C and C compiler developed by GNU project. It is widely adopted as the default compiler of UNIX-like systems. If you are using a Mac, you may also get gcc by installing Xcode (Developer) Tools in the Mac OS X installation Disc #1. Assume that we have a C source file 'garbage.c' with the content of shown below.
I have install Mountain Lion (Mac OS X 10.8) and now gcc doesn't seem to be available anymore. I've also installed Xcode 4.4 so there is no more /Developer directory. I need gcc both for mac ports and for ruby gems (that have native extensions). Does Xcode 4.4 include gcc or is there a way to install gcc?
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Introduction
![Gcc Gcc](/uploads/1/2/5/8/125847742/814149400.jpg)
This document provides instructions for setting up the programming environment we use in CS-11 on the Macintosh computer running OS-X version 10.9 or later. For OS-X 10.8 or earlier see the instructions here. We use the free developer tools supplied by Apple Computer.
Installing g++
- Open a Terminal window.Press ⌘ Command+Space, type Terminal in the search field, and press the Return key.
- In the Terminal window type
g++
and press the Return key. We will see an alert box like this: - Choose Install to get only the command line tools unless you want to learn Xcode.Xcode can be installed later from the App Store.
- After installation, type
g++
in the Terminal, press the Return key, and verify the terminal prints the message, 'no input files'. - After installation, set your computer to show file extensions in Finder.
As an optional step, register (for free) on the Apple Developer Connection as a basic developer. This gives you access to additional software and articles as well as older versions of Xcode.
Gcc Macos High Sierra
Setting Up TextEdit
To save code we need to use a plain text editor like TextEdit. However, we need to set up TextEdit to save files using plain text and not in rich-text format (RTF). Our programs will not compile unless we use plain text. These instructions setup TextEdit to make programming easier.
- Open TextEdit.Press ⌘ Command+Space, type TextEdit in the search field, and press the Return key.
- From the TextEdit menu, select Preferences. We will see a dialog box like this:
- In the Prefences dialog:
- Select Plain text.
- Set Window Size Width to 80 characters.
- Uncheck both Smart quotes and Smart dashes.
To jump to a specific line in an open document, press ⌘ Command+L to bring up the Select Line tool. Enter the line number and press the Return key.
Installing TextWrangler
Even though we can use TextEdit for developing program source code, other editors like TextWrangler are more convenient because we can see line numbers more easily. When we compile code, all errors are reported by line number. Easily viewing line numbers speeds up the program development process. These instructions describe how to install and set up TextWrangler.
- Start the App Store application on your Mac computer.
- Apple logo -> App Store..
- In the App Store, search for TextWrangler and select it from the search list.
- Press the Get button and wait for the installation to complete.
- In the App Store, press the Open button.
- In TextWrangler, open the Preferences dialog.
- In the Editor Defaults panel, check the box to Auto-expand tabs.
- In the Text Files panel, check the box to Ensure file ends with line break.
To start TextWrangler after installation, press the ⌘ Command+Space, type TextWrangler in the search field, and press the Return key.
Compiling and Running Programs
Use this source code to test that your installation can compile and run programs.
- Copy the above program into a text editor and save the file as
hello.cpp
on your Desktop. - Open a Terminal window and type
cd Desktop
follwed by the Return key to change directories (cd) to the Desktop: - To compile, enter the following in the Terminal window follwed by the Return key:We see the file
hello
appear on the desktop under an exec icon. - Run the compiled program by typing the following in the Terminal window followed by the Return key:
gfortran for Mac
DISCLAIMER: I provide this information here to aid my memory and in thehope that others will find it a useful resource based on my experiences of installing a gfortran compiler on Macs. I am not a computer scientist orFortran guru and, as such, am unlikely to be able to help you with Fortran code,compilation or runtime problems.
There are several options available for installing gfortran for Mac OS X,other than installing from source code.
GCC Wiki
I currently choose to use the relevant gfortran installer (.dmg) packagesprovided through the GCC Wiki (opens in new window). Note that the files areinstalled in /usr/local system directories which require the administratorpassword.
HPC
There are also various tar-files of gfortran distributions provided at the High PerformanceComputing web page. There are up-to-date distributions for some systems(only Mac OS X 10.7 (Lion), 10.8 (Mountain Lion), 10.9 (Mavericks) and 10.10(Yosemite) as of the last update of this page).
I recommend not to choose a package containing a version that is not a stable version accordingto the main GCC web site. Furthermore, for simplicity, I would recommendonly to install the relevant 'gfortran only' distributions.
The files are gzip'd tar-files which should be unpacked, for instance byusing the Terminal application, as follows:
sudo tar xvfz[tar-file] -C /
Note that the files are installed in /usr/local system directories whichrequire the administrator password.
The R Project
Previously, I had preferred to use the gfortran packages distributed inassociation with the R Project. These can be found in the 'Apple Xcode gcc-42add-ons' section of their Tools web page (opens in new window) or via the direct linksbelow. These gfortran packages and updates are specifically built to matchApple's own gcc builds. This does mean that the version is back at GCC 4.2,which is undoubtedly where it will stay since GCC changed their licensing andApple has stopped updating their GCC distribution with Xcode. Nonetheless, myexperience shows that this distribution is one that always works.
There are several packages relevant to particular Mac OS X and Xcodeinstallations. Run gcc-v to find out which Apple gcc build is currently installed as part of theXcode tools.
- Mac OS X 10.7 (Lion) and 10.8 (Mountain Lion): One may need to apply a link after installing one of these packages so 'gfortran' may be used as a command, e.g.sudo ln -s /usr/bin/gfortran-4.2 /usr/bin/gfortranOtherwise, simply use the explicit command 'gfortran-4.2'.
- Mac OS X 10.6 (Snow Leopard):
- Mac OS X 10.5 (Leopard):
The files for builds 5564 and 5566 are gzip'd tar-files which should beunpacked, for instance by using the Terminal application, as follows:
sudo tar xvfz[tar-file] -C /
Note that the files are installed in /usr system directories which requirethe administrator password.
Packages for older OS X and Xcode versions are also available on the pagelinked to above.
Compatibility and uninstalling
Asus wireless utility for mac. Note that each of these distributions has different associated libraries andother installed files which may conflict with or be wholly or partiallyoverwritten by one another. It is therefore advisable to ensure that you haveonly one distribution installed at any one time.
It is straightforward to uninstall the GCC Wiki distribution and instructionsare provided on the detailed instructions web page. Simply run the command:
sudo rm -r/usr/local/gfortran /usr/local/bin/gfortran
It is slightly more difficult to uninstall the R Project or HPC distribution. HPC distributes gfortran as a tar-file. Therefore each file contained in thetar-file should be removed. The easiest way to do this is probably to run thecommand:
For sh/bash:
for file in $(tar tfz[tar-file]); do sudo rm -f /$file; done
for file in $(tar tfz[tar-file]); do sudo rm -f /$file; done
For csh/tcsh:
foreach file ( `tar tfz[tar-file]` )
sudo rm -f /$file
end
foreach file ( `tar tfz[tar-file]` )
sudo rm -f /$file
end
where [tar-file] is the package, for example gfortran-4.7-bin.tar.gz,gfortran-lion.tar.gz, gfortran-snwleo-intel-bin.tar.gz, etc. This will removeall files but not directories, which may contain other files that are not to be removed. To remove empty directories only, then run the command:
For sh/bash:
for file in $(tar tfz[tar-file]); do sudo rmdir -p /$file; done
for file in $(tar tfz[tar-file]); do sudo rmdir -p /$file; done
For csh/tcsh:
foreach file ( `tar tfz[tar-file]` )
sudo rmdir -p /$file
end
foreach file ( `tar tfz[tar-file]` )
sudo rmdir -p /$file
end
The R Project distribution is a .pkg file and this adds another level ofcomplication. To list the files that were installed from this package, oneneeds to locate the 'receipt', which is a .bom file. On my system (Mac OS X10.8, Mountain Lion) the file is located at/private/var/db/receipts/org.r-project.gcc-42.darwin11.pkg.bom (was/private/var/db/receipts/org.r-project.gnuFortran42.lion.usr.pkg.bom for Mac OSX 10.7, Lion; or /private/var/db/receipts/org.r-project.mac.tools.gfortran.bom for Mac OS X 10.6, Snow Leopard). To find the file, run a command such as:
sudo find / -iname'*fortran*.bom'
Gcc Compiler For Mac Os
Once the appropriate file has been located, a list of files that have beeninstalled can be found by running the command:
lsbom -pF [bom-file]
Therefore, similarly to removing the HPC distribution, the files can beremoved by running commands such as:
For sh/bash:
for file in $(lsbom -pF[bom-file]); do sudo rm -f $file; done
for file in $(lsbom -pF[bom-file]); do sudo rmdir -p $file; done
for file in $(lsbom -pF[bom-file]); do sudo rm -f $file; done
for file in $(lsbom -pF[bom-file]); do sudo rmdir -p $file; done
For csh/tcsh:
foreach file ( `lsbom-pF [bom-file]` )
sudo rm -f $file
end
foreach file ( `lsbom-pF [bom-file]` )
sudo rmdir -p $file
end
foreach file ( `lsbom-pF [bom-file]` )
sudo rm -f $file
end
foreach file ( `lsbom-pF [bom-file]` )
sudo rmdir -p $file
end
Note that these commands should be run from the root directory (cd / first).
Last updated: 2020-09-02, M.Floyd (MIT)
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