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(com_err.info)The error-table compiler

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The error-table compiler
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   The error table compiler is named `compile_et'.  It takes one
argument, the pathname of a file (ending in `.et', e.g., `dsc_err.et')
containing an error table source file.  It parses the error table, and
generates two output files - a C header file (`discuss_err.h') which
contains definitions of the numerical values of the error codes defined
in the error table, and a C source file which should be compiled and
linked with the executable.  The header file must be included in the
source of a module which wishes to reference the error codes defined;
the object module generated from the C code may be linked in to a
program which wishes to use the printed forms of the error codes.