makefile flags

[milosavpejic]

I have problems with linking object files.This is what I get:
mt2d.o: In function `MAIN__':
fort77-15047-1.c.text+0x1e3): undefined reference to `boumedcell_'
fort77-15047-1.c.text+0x3b9): undefined reference to `sflfld_'
fort77-15047-1.c.text+0x3d2): undefined reference to `koef3rhs_'
fort77-15047-1.c.text+0x445): undefined reference to `gaussrrhs_'
Which flag should I use?
I have tried with -fno-underscore but no use.
F77=f77
FFLAG= -O3 -fno-underscore
Any suggestions?

[clowenstein]

I have problems with linking object files.This is what I get:
mt2d.o: In function `MAIN__':
fort77-15047-1.c.text+0x1e3): undefined reference to `boumedcell_'
fort77-15047-1.c.text+0x3b9): undefined reference to `sflfld_'
fort77-15047-1.c.text+0x3d2): undefined reference to `koef3rhs_'
fort77-15047-1.c.text+0x445): undefined reference to `gaussrrhs_'
Which flag should I use?
I have tried with -fno-underscore but no use.
F77=f77
FFLAG= -O3 -fno-underscore
Any suggestions?

Is mt2d a program that you wrote yourself, or are you trying to compile someone else's source files?

The initial appearance is that you have some undefined variables, either because they are mis-spelled or because there is a missing library which contains their definitions.

[wildpossum]

You need to supply the complete gcc line - Why well you problem could be library based, not just command line option based. Hence if you want an answer you need to supply full details of what and how you doing things.

[Rubberman]

This is indicative that you are not linking in the library that contains/implements the functions/symbols named in the error output. You need to tell the fortran compiler to link to the required library in your Makefile. As to which it is, I have no clue - that's your job!

[milosavpejic]

Well,the fact is I have used much part of the code from a collegue physicist.His code was working in windows I have remade it.
boumedcell_,the underscore could be related to fortran compiler but how?

[Rubberman]

The underscore is added by the compiler - not a problem unless you compiled with different options than the original one did (assuming you got a binary of the libraries in question). If you got the source code, make sure you are using the same compiler and/or compatible options/flags.

[milosavpejic]

I have solved it.But now I get this:
make: Circular boumedcell.o <- boumedcell.o dependency dropped.
f77 -o mt mt.o indat.o re2.o defpol12.o boumedcell.o boufld.o koef3.o gaussr.o sflfld.o koef3rhs.o gaussrrhs.o surfce.o
koef3rhs.o: In function `MAIN__':
fort77-10987-1.c.text+0x0): multiple definition of `MAIN__'
mt.o:fort77-10933-1.c.text+0x0): first defined here
mt.o: In function `MAIN__':
Why do I have multiple definiton of MAIN?

[Rubberman]

Well, it seems two of the components of the build (mt.o, koef3rhs.o) have both have implemented main(). Fix that and I think you are golden.

[milosavpejic]

I have fix it.But:
make: Circular boumedcell.o <- boumedcell.o dependency dropped.