linking errors in C language from fortran library

cvnravi
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July 3, 2009 1:38 AM PDT
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#2 Reply to #1
Quoting - Jugoslav Dujic

It sounds as if you did redeclaration by include, like:

File Preparx.for
==========================
INCLUDE "Serverstuff.for"
SUBROUTINE Preparx()
...
END
INCLUDE statement basically works as a copy/paste macro, and in effect you define Subroutine ServerStuff in every of your sources. I don't think that C/Fortran has anything to do with that error.

I don't know how it compiled with another compiler, but that's not the way to do things in Fortran. Actually, that's not how to do things in C either -- C include files should contain just function prototypes, not their bodies.

If my analysis is correct, you should get rid of those INCLUDE lines. Have in mind, though, that I haven't seen your actual code and that I might easily have misdiagnosed the situation.


Hi Thanks for your reply.. Part of your investigation is correct.. But serverstuff is a COMMON data which is included in  "server.for" file. Check the below code from server.for file.

INTEGER clientIndex !index into client list
CHARACTER*136 Buffer(17) !buffer for pipe i/o
CHARACTER dBuffer(2313) !buffer for pipe i/o
EQUIVALENCE(dBuffer,Buffer)
COMMON/serverstuff/clientIndex,dBuffer

DATA dBuffer(2313)/0/


As you said, server.for is included in some of the other files, though it is a global variable, serverstuff is giving redecleration problem when linking libraries. How can i split that COMMON data in such a way that, it should include in all required files and should not give redecleration error??

clientindex and dBuffer are using in C language piping calls(PipeRead and PipeWrite) which are called from fortran.

Thanks in advance..

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