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GNU Info (g77-300.info)Cannot Link Fortran ProgramsCannot Link Fortran Programs ---------------------------- On some systems, perhaps just those with out-of-date (shared?) libraries, unresolved-reference errors happen when linking `g77'-compiled programs (which should be done using `g77'). If this happens to you, try appending `-lc' to the command you use to link the program, e.g. `g77 foo.f -lc'. `g77' already specifies `-lg2c -lm' when it calls the linker, but it cannot also specify `-lc' because not all systems have a file named `libc.a'. It is unclear at this point whether there are legitimately installed systems where `-lg2c -lm' is insufficient to resolve code produced by `g77'. If your program doesn't link due to unresolved references to names like `_main', make sure you're using the `g77' command to do the link, since this command ensures that the necessary libraries are loaded by specifying `-lg2c -lm' when it invokes the `gcc' command to do the actual link. (Use the `-v' option to discover more about what actually happens when you use the `g77' and `gcc' commands.) Also, try specifying `-lc' as the last item on the `g77' command line, in case that helps. automatically generated by info2www version 1.2.2.9 |