On Thu, Apr 7, 2011 at 10:03 PM, Faré <fahree@gmail.com> wrote:
Could Juanjo or another hacker work with me
and/or Peter over skype and/or IRC to get the damn thing working?

I am having a hell of a month right now. Would it be ok if I just answer by email? Asynchronous processing of information is more convenient when one does not have very precise schedules.
If I understand correctly,
* I want to compile everything I will later link into a .o with
(compile-file lsp-file :system-p t :output o-file)

* If I want to load, I first have to convert to a fasl with
(c::build-fasl fas-file :lisp-files (list o-file))

* If I want to link files together, I call (c::builder ...) and there
I'm not sure exactly what to do or not to do

Depends. Do you want to join all files into a unique FASL?

(c::build-fasl fasl-file :lisp-files (list o-file1 o-file2 ... o-fileN))

Does it have to be a program instead? Then change -fasl with -program.
Things I don't understand:
* When to or not to produce and/or use a static or dynamic library, in
the context of an overall Lisp application [IIUC, make systems into a
.a for easier linking, otherwise load individual files as .so]

In ASDF-ECL I build a static library for each large component, such as cl-ppcre, alexandria, etc. The reasons for this are based on linker limitations: C:BUILD-FASL can not take an arbitrary number of object files, because the command line argument for "ld" is limited to a given size. Instead ASDF-ECL prceeds as follwows

- Compile all object files in the order mandated by ASDF.
- Whenever a file has to be loaded, use build-fasl on it and load it.
- At any point a library is fully compiled, join all object files into a *.a library using C::BUILD-STATIC-LIBRARY (same syntax as BUILD-FASL).
- For convenience, that static library can be converted into a large FASL file using (C::BUILD-FASL joined-fasl-file-name :lisp-files (list name-of-library-file))
- Finally, all libraries are linked together into a single program using
(C::BUILD-PROGRAM output-program :lisp-files (list library-1 library-2 ... library-N))
* How to make sure the initialization functions of objects and
libraries are called [IIUC, nothing required]

No requirement to do that. ECL's object files execute all statements sequentially in the order in which they were declared in the source file.
* What to put or not to put in the prologue and epilogue. [IIUC, only
prologue required, when building a .exe, and that can be standardized
into setting a few variables and jumping to a main lisp function]

You probably do not have to add anything.
* If using .a libraries, do I coalesce previous libraries in a bigger
one, or get a chain of libraries that require each other? [IIUC, a

When linking multiple *.a libraries using BUILD-PROGRAM or BUILD-FASL to get a larger entity, they simply have to be specified in the order in which they would have been loaded by the lisp image.
* Same question when using .so files. [IIUC, it depends and it's complicated]

Same as above.
* In a chain of .so libraries that require each other, what is the
proper way to load them, and how do I control the load path?

List them in the appropriate order. This is what my use of ASDF:TRAVERSE is for in ASDF-ECL.


Instituto de Física Fundamental, CSIC
c/ Serrano, 113b, Madrid 28006 (Spain)