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* Teach FortranCInterface about g77 manglingBrad King2009-08-061-0/+1
| | | | | The old GNU g77 Fortran compiler uses the suffix '__' for symbols containing an underscore in their name.
* Sort FortranCInterface global mangling symbolsBrad King2009-08-061-2/+2
| | | | | This just cleans up the list ordering so more entries can be added while keeping everything organized.
* Cleanup FortranCInterface for PGI and GCC 4.2Brad King2009-08-053-8/+10
| | | | | This documents the purpose of the extra my_module_.c and mymodule.c source files, and sorts the symbols.
* Teach FortranC interface for Intel, PGI, and gcc 4.2Bill Hoffman2009-08-053-2/+8
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* Rewrite FortranCInterface moduleBrad King2009-08-0512-0/+154
This is a new FortranCInterface.cmake module to replace the previous prototype. All module support files lie in a FortranCInterface directory next to it. This module uses a new approach to detect Fortran symbol mangling. We build a single test project which defines symbols in a Fortran library (one per object-file) and calls them from a Fortran executable. The executable links to a C library which defines symbols encoding all known manglings (one per object-file). The C library falls back to the Fortran library for symbols it cannot provide. Therefore the executable will always link, but prefers the C-implemented symbols when they match. These symbols store string literals of the form INFO:symbol[<name>] so we can parse them out of the executable. This module also provides a simpler interface. It always detects the mangling as soon as it is included. A single macro is provided to generate mangling macros and optionally pre-mangled symbols.