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What Fortran compilers are available?

April 26, 2017compilers FORTRAN

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What Fortran compilers are available?

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Most of our systems have compilers for the 1978 (called Fortran 77), 1990, and 1995 ISO Standards, with the expected names f77, f90, and f95. The expected file suffixes are .f, .f90, and .f95, respectively. Because Fortran 90 introduced a new (somewhat) free-form source format, the later compilers assume the old Fortran 66 and 77 style 72-column fixed format if the file suffix is .f, and otherwise, expect the free-form format. Some have command-line options to specify the source format: consult the appropriate compiler manual pages for details. There are no widespread conventions for suffixes of header files: both .inc and .h have been used. Most of our systems have the GNU Fortran 77 compiler, g77. Only the GNU/Linux AMD64, IA-32, and IA-64 systems, and the Mac OS X systems, have the GNU Fortran 90/95 compiler, gfortran. Almost all of our systems have the AT&T Bell Laboratories Fortran-to-C translator, f2c, which handles Fortran 77 only. On Apple Mac OS X, that translator is used inte