abbott@VUSE.VANDERBILT.EDU (Ben Abbott) (05/07/90)
How many Fortran compilers are available for the transputer? Any experiences ? What is the best way to integrate Fortran code with LSC ? Ben Abbott abbott@vuse.vanderbilt.edu
robertsj@ADMIN.OGI.EDU (John Roberts) (05/08/90)
I'm a software engineer at Cogent Research. We build a transputer-based workstation and compute server. We got our Fortran compiler from Penguin/Pentasoft/Unidot. It is now being distributed by Unidot in Golden, Colorado. It was a shaky Fortran-77 at best, but with some hacking it passed the Fortran-77 validation suite. We totally had to replace the math functions to pass things like the Elementary Functions test (EleFun). In general, though we are able to compile most Fortran codes to run on the transputer. As far as integrating it with Logical Systems C.... that sounds rather dubious at best. I can think of a couple of ways. First you would want to use the option in LSC (the latest release) that causes the code generator to generate relocatable code via passing a static link (global data pointer) as an argument. Our Fortran is set up that way (since we have to have programs load in any arbitrary memory area, they must be relocatable). If you have Fortran set up so it isn't producing relocatable code, then that option should be disabled in LSC. The traditional way to do it is to have either C call a Fortran library routine or visa versa. Fortran always passes an "invisible" pointer as the first argument that points to where to store the return value from a function, so beware of calling conventions, but there's nothing that should prevent you from mixing code. It has been done where I work. John Roberts Cogent Research, Inc. robertsj@admin.ogi.edu