The table illustrates examples of using the Intel Fortran compiler or the GNU Fortran compiler to link all the objects:. When using the Intel Fortran compiler, if the main program does not exist in a Fortran object file that is compiled by the Intel Fortran Compiler ifort , specify the -nofor-main option on the ifort command line during linking.
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You do not need to specify the -fopenmp option on the link line:. Alternatively, you could use the Intel compiler to link the application, but need to pass multiple gfortran libraries using the -l options on the link line:.
Binaries available for gfortran
Type of File Commands C source gcc -fopenmp -c foo. Submit feedback on this help topic. Fortran source, dynamic link. C source, dynamic link.
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- DESCRIPTION - ifort.
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Absoft's Pro Fortran tool suite automates building extremely fast parallel code on multi-core systems. Arguably the best fortran compiler for Intel macs are the Intel compilers ifort.
Working with Fortran code
They can build pretty much any fortran code including very old fortran as far back as fortran 66 and support the latest fortran standards. They also integrate directly into Xcode and tend to be the most up to date in terms of compatibility with the apple dev tools.
They are also link compatible with both gcc and clang. They provide redistribute libraries for dynamically linked binaries, but they also support static linking, so in either case binaries can be distributed to people without the compiler installed. They aren't free on Mac they are free on Linux , but the academic price is relatively inexpensive. They are better than gcc in terms of codgen, however. So if you aren't using MLK there may be no benefit.
Fortran on a Mac
There are also various tar-files of gfortran distributions provided at the High Performance Computing web page. There are up-to-date distributions for some systems only Mac OS X I recommend not to choose a package containing a version that is not a stable version according to the main GCC web site. Furthermore, for simplicity, I would recommend only to install the relevant "gfortran only" distributions. The files are gzip'd tar-files which should be unpacked, for instance by using the Terminal application, as follows:.
Previously, I had preferred to use the gfortran packages distributed in association with the R Project. These can be found in the "Apple Xcode gcc add-ons" section of their Tools web page opens in new window or via the direct links below.
Fortran/Hello world - Wikibooks, open books for an open world
These gfortran packages and updates are specifically built to match Apple's own gcc builds. This does mean that the version is back at GCC 4. Nonetheless, my experience shows that this distribution is one that always works.
Run gcc -v to find out which Apple gcc build is currently installed as part of the Xcode tools. One may need to apply a link after installing one of these packages so "gfortran" may be used as a command, e.