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gfortran is the name of the GNU Fortran compiler, which is part of the GNU Compiler Collection (GCC). gfortran has replaced the g77 compiler, which stopped development before GCC version 4.0. It includes support for the Fortran 95 language and is compatible with most language extensions supported by g77[1], allowing it to serve as a drop-in replacement in many cases. Parts of Fortran 2003[2] and Fortran 2008[3] have also been implemented.

An experimental version of gfortran has been included in GCC versions 4.0.x, but only from version 4.1 on it is considered user-ready by its developers. Development is ongoing together with the rest of GCC. gfortran forked off from g95 in January 2003, which itself started in early 2000. The two codebases have "significantly diverged" according to GCC developers.[4]


  1. "Discussion of incompatibilities between g77 and gfortran". GNU. Retrieved 2007-01-26. 
  2. "Chart of Fortran 2003 Features supported by GNU Fortran". GNU. Retrieved 2009-06-25. 
  3. "Chart of Fortran 2008 Features supported by GNU Fortran". GNU. Retrieved 2009-06-25. 
  4. "The other GCC-based Fortran compiler". GNU. Retrieved 2007-04-11. 

External links

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es:GNU Fortran it:GFortran pl:GFortran ru:Gfortran zh:GFORTRAN

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