extcentry man page on IRIX

extcentry man page on IRIX

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EXTCENTRY(1)							  EXTCENTRY(1)

NAME
     extcentry - extract FORTRAN-callable entry points from a C file

SYNOPSIS
     extcentry infile outfile

DESCRIPTION
     Extcentry is used to extract C functions for which FORTRAN-callable
     interface routines (wrappers) are to be generated by the program
     mkf2c(1).	Extcentry accepts as input any C file (infile), and outputs
     (to outfile) only those portions which are surrounded by the special
     comments /* CENTRY */ and /* ENDCENTRY */.

     The first step in generating a FORTRAN-to-C interface routine is to
     surround only those C functions for which entry points are to be
     generated by these special comments and to run the file through
     extcentry. The FORTRAN-to-C interface generator program mkf2c can then be
     invoked on the resultant file to generate the assembly language wrapper.
     This is necessary since mkf2c understands only a limited subset of the C
     grammar, and cannot parse such constructs as external declarations,
     typedefs, and C-preprocessor directives.

SEE ALSO
     mkf2c(1)

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