Re: Fortran module checking


"Ken Fairfield" <Ken@xxxxxxxxxxxxxxxxxxxxx> wrote in message
news:5cp9coF30kecaU1@xxxxxxxxxxxxxxxxxxxxx
Eigenvector wrote:
I'm a serious newbie to Fortran and am asking this because I'm being
forced to help debug another unwilling person's code. Forgive the lack
of understanding.

The code that I'm interested in uses modules to retrieve variable names
for the main code. Essentially there is a variable.f containing all the
code variables which is turned into a .mod file - that is then called by
main.f with a USE statement.

It would appear through my debugger (idebug) that attempts to call code
in that .mod file are returning segmentation faults. But I can't prove
that and the developer is balking. So I'm looking for ways to
demonstrate that the contents of the .mod file are being included in the
finished product and available to the executable - that the syntax is
proper. He's a developer and believes my system is in error, I'm a Sys
Ad and believe his code is in error so I'm trying to establish the
validity of my position by demonstrating that either I'm right or wrong.

Is it as simple as (mind you I'm using xlf90)
! variable.f psuedocode
variable1 = tag1, tag2

xlf90 variable.f -o variable.mod (I'm paraphrasing here)

! main.f psuedocode
use tag1="Hello"
use tag2="Hi"

xlf90 main.f -o program.exe

Or are there compile options that should be invoked to ensure that USE
statements get included into the main code?

In addition to the comments of Beliavsky and dpb, note
that compiling a source file containing a MODULE produces
*both* a module output file (typically .mod) *and* an
object file (.o or .obj, etc.).

Compiling a source file that USEs a module requires the
.mod file be present/accessible. Linking the program
requires the .o/.obj files from all USEing files *plus*
all USEd modules.

Finally, and to reinforce the comments of the others,
*none* of what you've shown is Fortran so it's basically
impossible to diagnose the error(s). Please post the
actual source code involved, or at the very least, the
declarations in the module, and the USE statements and
references to the module variables and/or routines in
the main program...exact cut'n'paste please, no paraphrasing...

-Ken

Well I don't have web access from this system so I thought I'd toss out
something and see if anyone bit. Assuming we don't figure this out
tommorrow I'll post up what I can from the hardcopy.


.

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