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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2018 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (guix build guile-build-system)
#:use-module ((guix build gnu-build-system) #:prefix gnu:)
#:use-module (guix build utils)
#:use-module (srfi srfi-26)
#:use-module (ice-9 match)
#:use-module (ice-9 popen)
#:use-module (ice-9 rdelim)
#:use-module (ice-9 threads)
#:use-module (guix build utils)
#:export (target-guile-effective-version
%standard-phases
guile-build))
(define* (target-guile-effective-version #:optional guile)
"Return the effective version of GUILE or whichever 'guile' is in $PATH.
Return #false if it cannot be determined."
(let* ((pipe (open-pipe* OPEN_READ
(if guile
(string-append guile "/bin/guile")
"guile")
"-c" "(display (effective-version))"))
(line (read-line pipe)))
(and (zero? (close-pipe pipe))
(string? line)
line)))
(define (file-sans-extension file) ;TODO: factorize
"Return the substring of FILE without its extension, if any."
(let ((dot (string-rindex file #\.)))
(if dot
(substring file 0 dot)
file)))
(define %scheme-file-regexp
;; Regexp to match Scheme files.
"\\.(scm|sls)$")
(define %documentation-file-regexp
;; Regexp to match README files and the likes.
"^(README.*|.*\\.html|.*\\.org|.*\\.md)$")
(define* (set-locale-path #:key inputs native-inputs
#:allow-other-keys)
"Set 'GUIX_LOCPATH'."
(match (assoc-ref (or native-inputs inputs) "locales")
(#f #t)
(locales
(setenv "GUIX_LOCPATH" (string-append locales "/lib/locale"))
#t)))
(define* (invoke-each commands
#:key (max-processes (current-processor-count))
report-progress)
"Run each command in COMMANDS in a separate process, using up to
MAX-PROCESSES processes in parallel. Call REPORT-PROGRESS at each step.
Raise an error if one of the processes exit with non-zero."
(define total
(length commands))
(define (wait-for-one-process)
(match (waitpid WAIT_ANY)
((_ . status)
(unless (zero? (status:exit-val status))
(error "process failed" status)))))
(define (fork-and-run-command command)
(match (primitive-fork)
(0
(apply execlp command))
(pid
#t)))
(let loop ((commands commands)
(running 0)
(completed 0))
(match commands
(()
(or (zero? running)
(let ((running (- running 1))
(completed (+ completed 1)))
(wait-for-one-process)
(report-progress total completed)
(loop commands running completed))))
((command . rest)
(if (< running max-processes)
(let ((running (+ 1 running)))
(fork-and-run-command command)
(report-progress total completed)
(loop rest running completed))
(let ((running (- running 1))
(completed (+ completed 1)))
(wait-for-one-process)
(report-progress total completed)
(loop commands running completed)))))))
(define* (report-build-progress total completed
#:optional (log-port (current-error-port)))
"Report that COMPLETED out of TOTAL files have been completed."
(display #\cr log-port)
(format log-port "compiling...\t~5,1f% of ~d files" ;FIXME: i18n
(* 100. (/ completed total)) total)
(force-output log-port))
(define* (build #:key outputs inputs native-inputs
(source-directory ".")
(compile-flags '())
(scheme-file-regexp %scheme-file-regexp)
target
#:allow-other-keys)
"Build files in SOURCE-DIRECTORY that match SCHEME-FILE-REGEXP."
(let* ((out (assoc-ref outputs "out"))
(guile (assoc-ref (or native-inputs inputs) "guile"))
(effective (target-guile-effective-version guile))
(module-dir (string-append out "/share/guile/site/"
effective))
(go-dir (string-append out "/lib/guile/"
effective "/site-ccache/"))
(guild (string-append guile "/bin/guild"))
(flags (if target
(cons (string-append "--target=" target)
compile-flags)
compile-flags)))
(if target
(format #t "Cross-compiling for '~a' with Guile ~a...~%"
target effective)
(format #t "Compiling with Guile ~a...~%" effective))
(format #t "compile flags: ~s~%" flags)
;; Make installation directories.
(mkdir-p module-dir)
(mkdir-p go-dir)
;; Compile .scm files and install.
(setenv "GUILE_AUTO_COMPILE" "0")
(setenv "GUILE_LOAD_COMPILED_PATH"
(string-append go-dir
(match (getenv "GUILE_LOAD_COMPILED_PATH")
(#f "")
(path (string-append ":" path)))))
(let ((source-files
(with-directory-excursion source-directory
(find-files "." scheme-file-regexp))))
(invoke-each
(map (lambda (file)
(cons* guild
"guild" "compile"
"-L" source-directory
"-o" (string-append go-dir
(file-sans-extension file)
".go")
(string-append source-directory "/" file)
flags))
source-files)
#:max-processes (parallel-job-count)
#:report-progress report-build-progress)
(for-each
(lambda (file)
(install-file (string-append source-directory "/" file)
(string-append module-dir
"/" (dirname file))))
source-files))
#t))
(define* (install-documentation #:key outputs
(documentation-file-regexp
%documentation-file-regexp)
#:allow-other-keys)
"Install files that mactch DOCUMENTATION-FILE-REGEXP."
(let* ((out (assoc-ref outputs "out"))
(doc (string-append out "/share/doc/"
(strip-store-file-name out))))
(for-each (cut install-file <> doc)
(find-files "." documentation-file-regexp))
#t))
(define %standard-phases
(modify-phases gnu:%standard-phases
(delete 'bootstrap)
(delete 'configure)
(add-before 'install-locale 'set-locale-path
set-locale-path)
(replace 'build build)
(add-after 'build 'install-documentation
install-documentation)
(delete 'check)
(delete 'strip)
(delete 'validate-runpath)
(delete 'install)))
(define* (guile-build #:key (phases %standard-phases)
#:allow-other-keys #:rest args)
"Build the given Guile package, applying all of PHASES in order."
(apply gnu:gnu-build #:phases phases args))
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