gjacobs at bioinfotools.com
Mon Mar 3 23:24:55 CET 2003
At 1:22 PM +0100 3/3/03, Frank Heckenbach wrote:
>Grant Jacobs wrote:
>> 1. The compiler won't make .o files for units that are found in a
>> directory other than the one you're compiling from.
>> I have three directories and I compile from within one of them. The
>> units in the other two directories are located using --unit-path
>> compiler option. Reading the docs, I'm under the impression its
>> supposed to default to placing the .o files into the directory you
>> compile from for all units,
>Yes, I think that's how it should be (and seems to be in my test).
>> regardless where the units are located
>> unless you play with the compiler options. The .gpi files *are* made
>> correctly. (I'm using --autobuild, btw.)
>Sorry, but your description is not really clear to me. Are no .o
>files created, or in which directories are they created, and what
>about the gpi files? Which compiler options did you use, and which
>files are located where?
No .o files are made for nits which lie outside the current
directory. You have to do them yourself manually, which in my case is
simply a matter of 'gpc -c ../otherdir/*.p'. However, its not what I
expected. I thought the compiler would locate them via --unit-path
which I use on the command line, etc.
alias gpc="gpc --executable-file-name --nested-comments
(Excuse the wraparound.) I compile from
The units in GHJLibraries and table_code_dir have their .gpi files
made into aa_prog_dir as expected; but no .o files are made for these
units. .o files are made for all the units in aa_prog_dir, but not
the other two directories.
I can work around it, but it might be worth noting as something that
might be tackled "one day".
> > 2. (Less important: I suspect this will resolve itself once the above
>> issue is dealt with.) The linker its looking for a lot of init_*
>> references, which I presume are initialisation routines. The docs
>> indicate that units don't need to supply an initialisation part. Does
>> linker simply "do away" with these references, or are empty
>> initialisation routines required?
>The problem is that while compiling the interface, it is not known
>whether the unit has an initialisation part (or any variables that
>need initialization, or uses any units that have an initializer,
>...). So if you wanted to convey the information whether there's one
>to the user of the unit, the GPI file would have to be updated
>Even worse, with circular unit references (which I don't like, but
>we have to support them), things get even trickier. I could
>construct some example if you really care ...
>AFAICS, improving it would cost much effort and gain very little
>(the costs of a redundant empty initalizer is almost always
Leave it. This looks more trouble than its worth.
Grant Jacobs Ph.D. BioinfoTools
ph. +64 3 476 1820 (office, after 10am) PO Box 6129,
or +64 25 601 5917 (mobile) Dunedin,
gjacobs at bioinfotools.com NEW ZEALAND.
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