tcourtoi@jarthur.Claremont.EDU (Todd Courtois) (02/26/90)
I need a bit of help. I have a main program written in Pascal, and I have a large (20,000 line) C procedure that I would like to call from the main program, instead of re-writing a similar procedure in Pascal. What do you all suggest? Is there a way to include C source code in a Pascal program and have it compile together? I have access to several different types of Pascal and C compilers, including TurboC/Pascal, QuickC, VAX_Pascal, etc...thus if you have a compiler-specific suggestion, that might still be useful to me. I have heard before that there are converters available which will convert C to Pascal and Pascal to C, but for purposes of debugging I would prefer not to convert the source code, since I already understand the C procedure as written. Thanks very much for any suggestions. E-mail desired but not required. :) --Todd Courtois tcourtoi@jarthur.claremont.edu
james@abby.chem.ucla.edu (James Wilkinson) (02/26/90)
> I need a bit of help. I have a main program written in Pascal, and > I have a large (20,000 line) C procedure that I would like to call > from the main program, instead of re-writing a similar procedure in > Pascal. This should be easy to do on the VAX. Compile the C program as a module (ie., no main section), define the appropriate external routines in the pascal program, call them, and you are happy. You didn't say whether or not you want to call the C code as a whole (which would mean you would need to make the C code callable as a whole), so I'm assuming you only want to call subroutines from the C code. I know there are people at HMC that do this all the time. JaW James Wilkinson Phone: 1-213-206-5104 Department of Chemistry and Biochemistry FAX: 1-213-206-5381 University of California, Los Angeles BITNET: JAMES@UCLACH 405 Hilgard Avenue Internet: JAMES@ABBY.CHEM.UCLA.EDU Los Angeles, California 90024-1569 SPAN: ABBY::JAMES or 5882::JAMES
bigelow@hpfcso.HP.COM (Jim Bigelow) (02/27/90)
> I need a bit of help. I have a main program written in Pascal, and > I have a large (20,000 line) C procedure that I would like to call > from the main program, instead of re-writing a similar procedure in > Pascal. > What do you all suggest? I suggest that you declare the C procedure as external and let the linker resolve the reference and link in the C routine. Jim Bigelow S300 Pascal Colorado Language Lab HP
merriman@ccavax.camb.com (02/28/90)
>> I have a main program written in Pascal, and >> I have a large (20,000 line) C procedure that I would like to call >> from the main program, instead of re-writing a similar procedure in >> Pascal. Three questions: 1. What do the parameters to the C procedure look like? 2. What does the C procedure return? 3. Does the C procedure expect to share any global data with the main program?