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January 2025

6 participants
2 discussions

Balancing ASDF Configuration for Precompiled OS and User-Compiled FASL Files
by Joseph Mingrone 01 Dec '25

01 Dec '25

Hello, I'm attempting to adjust the ASDF configuration for FreeBSD CL ports/packages to balance the use of precompiled FASL files from OS packages with the ability to compile and write code under users' home directories. Details are below. Any advice would be appreciated. The system-wide configuration [0] I'm attempting to adjust is used both when building FreeBSD CL OS packages and on target systems. Specifically, it: - sets up a central registry, - enforces a filesystem layout, - and configures output translations. With this configuration, users can run `pkg install cl-alexandria-sbcl` and two packages will be installed: - cl-alexandria, essentially the upstream repository, - cl-alexandria-sbcl, the compiled code. From their Lisp implementation, users only need to execute (asdf:load-system :alexandria) and no local compilation is required. However, if a user installs only cl-alexandria without cl-alexandria-sbcl, issues arise. Due to the output translations, ASDF attempts to write compiled code to a location where the user lacks write access. On the other hand, if we remove the output translations on target systems, all FASL files provided by the OS packages are ignored, and ASDF tries to recompile and write them under ~/.cache/common-lisp/. Is there a way to configure ASDF to recognize and accept the FASL files from the OS packages and compile and write any missing FASL files to the default untranslated location under ~/.cache/common-lisp/? Thank you, Joe [0] https://cgit.freebsd.org/ports/tree/devel/cl-asdf/bsd.cl-asdf.mk

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package-inferred-system noob-user confusion
by Russell L. Carter 20 Jan '25

20 Jan '25

Greetings, I am a common-lisp noob. I am not a programmer noob, nor a build system noob. I have carefully studied fare's asdf manual, pages 25-26 in the pdf and backwards through the reverse dependencies of the terms used, about the package-inferred-system. I have a problem that I've whittled down to a very small snippet. I'm using SBCL 2.4.10.117-507e7ae05 and its native ASDF, but also tested against ASDF repo head (ln -s into ~/common-lisp, verified in the repl). My question is why this system, located in file "./hello.asd", containing: ***************************************************************** (asdf:defsystem "hello" :class :package-inferred-system :depends-on ("hello/src/main")) ***************************************************************** paired with the system/package file "./src/main.lisp", containing: ****************************************************************** (uiop:define-package :hello/src/main ;; (:use :alexandria) ;; XXXRLC This line fails: "The variable MAIN ;; is unbound". I have no idea why. Backtrace provides no clues ;; (to me). Load the library in the repl matters not. Elide that ;; line and (asdf:load-system "hello") => T and then CL-USER> ;; (hello/src/main:main) => urg \n "urg" as expected. (:export #:main)) (in-package :hello/src/main) (defun main () (write-line "urg")) ******************************************************************* fails as described in the comment. Sure I would like the answer but the more interesting question is how could I debug this failure? I slogged through the late '90s debugging complex C++ template programming errors. Pages and pages of output. I don't mind doing it again. But I don't know where to start with this ASDF build system. Thank you for any suggestions, obviously the answer must be trivial. All the best, Russell L. Carter

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