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GNU Info (g77-295.info)Output Assumed To FlushOutput Assumed To Flush ----------------------- For several versions prior to 0.5.20, `g77' configured its version of the `libf2c' run-time library so that one of its configuration macros, `ALWAYS_FLUSH', was defined. This was done as a result of a belief that many programs expected output to be flushed to the operating system (under UNIX, via the `fflush()' library call) with the result that errors, such as disk full, would be immediately flagged via the relevant `ERR=' and `IOSTAT=' mechanism. Because of the adverse effects this approach had on the performance of many programs, `g77' no longer configures `libf2c' (now named `libg2c' in its `g77' incarnation) to always flush output. If your program depends on this behavior, either insert the appropriate `CALL FLUSH' statements, or modify the sources to the `libg2c', rebuild and reinstall `g77', and relink your programs with the modified library. (Ideally, `libg2c' would offer the choice at run-time, so that a compile-time option to `g77' or `f2c' could result in generating the appropriate calls to flushing or non-flushing library routines.) Note: Always Flush Output, for information on how to modify the `g77' source tree so that a version of `libg2c' can be built and installed with the `ALWAYS_FLUSH' macro defined. automatically generated by info2www version 1.2.2.9 |