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9.10 Fortran 77 Support

Automake includes full support for Fortran 77.

Any package including Fortran 77 code must define the output variable `F77' in `configure.in'; the simplest way to do this is to use the AC_PROG_F77 macro (see section `Particular Program Checks' in The Autoconf Manual). See section 9.10.4 Fortran 77 and Autoconf.

A few additional variables are defined when a Fortran 77 source file is seen:

F77
The name of the Fortran 77 compiler.

FFLAGS
Any flags to pass to the Fortran 77 compiler.

AM_FFLAGS
The maintainer's variant of FFLAGS.

RFLAGS
Any flags to pass to the Ratfor compiler.

AM_RFLAGS
The maintainer's variant of RFLAGS.

F77COMPILE
The command used to actually compile a Fortran 77 source file. The file name is appended to form the complete command line.

FLINK
The command used to actually link a pure Fortran 77 program or shared library.

Automake can handle preprocessing Fortran 77 and Ratfor source files in addition to compiling them(6). Automake also contains some support for creating programs and shared libraries that are a mixture of Fortran 77 and other languages (see section 9.10.3 Mixing Fortran 77 With C and C++).

These issues are covered in the following sections.

9.10.1 Preprocessing Fortran 77  
9.10.2 Compiling Fortran 77 Files  
9.10.3 Mixing Fortran 77 With C and C++  
9.10.4 Fortran 77 and Autoconf  


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