From b96825876eea5c0dff9414d88a8dc3302b2d2f7f Mon Sep 17 00:00:00 2001
From: "Jan (janneke) Nieuwenhuizen" <janneke@gnu.org>
Date: Sat, 18 Apr 2020 17:05:48 +0200
Subject: [PATCH] gnu: perl: Actually produce a host perl when cross-compiling.
* gnu/packages/perl.scm (perl)[native-inputs]: When cross-compiling, add
`perl-cross' input.
[arguments]: When cross-compiling, use it to produce binary for host.
---
gnu/packages/perl.scm | 85 ++++++++++++++++++++++++++++++++++++++++---
1 file changed, 80 insertions(+), 5 deletions(-)
@@ -11,7 +11,7 @@
;;; Copyright © 2016 Alex Sassmannshausen <alex@pompo.co>
;;; Copyright © 2016, 2018, 2020 Roel Janssen <roel@gnu.org>
;;; Copyright © 2016 Ben Woodcroft <donttrustben@gmail.com>
-;;; Copyright © 2016 Jan Nieuwenhuizen <janneke@gnu.org>
+;;; Copyright © 2016, 2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
;;; Copyright © 2017 Raoul J.P. Bonnal <ilpuccio.febo@gmail.com>
;;; Copyright © 2017, 2018 Marius Bakke <mbakke@fastmail.com>
;;; Copyright © 2017 Adriano Peluso <catonano@gmail.com>
@@ -48,6 +48,7 @@
#:use-module (gnu packages)
#:use-module (guix packages)
#:use-module (guix download)
+ #:use-module (guix git-download)
#:use-module (guix utils)
#:use-module (guix build-system gnu)
#:use-module (guix build-system perl)
@@ -120,10 +121,72 @@
(("-std=c89")
"-std=gnu89"))
#t))
- (replace 'configure
- (lambda* (#:key configure-flags #:allow-other-keys)
- (format #t "Perl configure flags: ~s~%" configure-flags)
- (apply invoke "./Configure" configure-flags)))
+ ,@(if (%current-target-system)
+ `((add-after 'unpack 'unpack-cross
+ (lambda* (#:key inputs #:allow-other-keys)
+ (let ((cross-checkout (assoc-ref %build-inputs "perl-cross")))
+ (invoke "chmod" "-R" "+w" ".")
+ (copy-recursively cross-checkout "."))
+ (let ((bash (assoc-ref %build-inputs "bash")))
+ (substitute* '("Makefile.config.SH"
+ "cnf/config.guess"
+ "cnf/config.sub"
+ "cnf/configure"
+ "cnf/configure_misc.sh"
+ "miniperl_top")
+ (("! */bin/sh") (string-append "! " bash "/bin/bash"))
+ ((" /bin/sh") (string-append bash "/bin/bash")))
+ (substitute* '("cnf/configure_tool.sh")
+ (( "[\t ]*result \"BSD\".*")
+ "\
+ result \"BSD\"
+ ;;
+ *-gnu)
+ result \"GNU\"
+"))
+ (substitute* '("ext/Errno/Errno_pm.PL")
+ (( "\\$cpp < errno.c") "gcc -E errno.c")))
+ #t))
+ (replace 'configure
+ (lambda* (#:key configure-flags outputs #:allow-other-keys)
+ (let* ((out (assoc-ref outputs "out"))
+ (configure-flags
+ (cons*
+ ;; `perl-cross' confuses target and host
+ (string-append "--target=" ,(%current-target-system))
+ (string-append "--prefix=" out)
+ "-Dbyteorder=1234"
+ (filter (negate
+ (lambda (x) (or (string-prefix? "-d" x)
+ (string-prefix? "-Dcc=" x))))
+ configure-flags))))
+ (format (current-error-port)
+ "running ./configure ~a\n" (string-join configure-flags))
+ (apply invoke (cons "./configure" configure-flags))
+ (substitute* "config.sh"
+ (("^libs=.*") "libs='-ldl -lpthread -lm'\n")
+ (("^perllibs=.*") "perllibs='-ldl -lpthread -lm'\n"))
+ (substitute* "config.h"
+ (("^# HAS_NANOSLEEP") "/* #undef HAS_NANOSLEEP */"))
+ #t)))
+ (add-after 'build 'touch-non-built-files-for-install
+ (lambda _
+ ;; `make install' wants to install this; it wasn't built...
+ (mkdir-p "cpan/Pod-Usage/blib/script")
+ (with-output-to-file "cpan/Pod-Usage/blib/script/pod2text"
+ (lambda _ (display "")))
+ (with-output-to-file "cpan/Pod-Usage/blib/script/pod2usage"
+ (lambda _ (display "")))
+ (with-output-to-file "cpan/Pod-Checker/blib/script/podchecker"
+ (lambda _ (display "")))
+ (mkdir-p "cpan/Pod-Parser/blib/script")
+ (with-output-to-file "cpan/Pod-Parser/blib/script/podselect"
+ (lambda _ (display "")))
+ #t)))
+ `((replace 'configure
+ (lambda* (#:key configure-flags #:allow-other-keys)
+ (format #t "Perl configure flags: ~s~%" configure-flags)
+ (apply invoke "./Configure" configure-flags)))))
(add-after 'install 'remove-extra-references
(lambda* (#:key inputs outputs #:allow-other-keys)
(let* ((out (assoc-ref outputs "out"))
@@ -152,6 +215,18 @@
"/lib',\n"))))
config2)
#t))))))
+ (native-inputs
+ (if (%current-target-system)
+ `(("perl-cross"
+ ,(origin
+ (method git-fetch)
+ (uri (git-reference
+ (url "https://github.com/arsv/perl-cross")
+ (commit "1.3.3")))
+ (file-name (git-file-name "perl-cross" "1.3.3"))
+ (sha256
+ (base32 "065qbl1x44maykaj8p8za0b6qxj74bz7fi2zsrlydir1mqb1js3d")))))
+ '()))
(native-search-paths (list (search-path-specification
(variable "PERL5LIB")
(files '("lib/perl5/site_perl")))))
--
2.26.0
Hi! As discussed on IRC, I tried to apply perl-cross (https://github.com/arsv/perl-cross) to make perl actually cross build for our Hurd VM. There's some weirdness wrt some pod scripts; no idea. I haven't gotten round to test the package itself yet on the Hurd. Also, first tests on the Hurd show a possible problem with Perl's system or shell -- no idea. I get things like Can't exec "": No such file or directory at /gnu/store/dd5a35aca6411w5l29ask7pl626v8j4r-perl-5.30.2/lib/perl5/5.30.2/i586-/Cwd.pm line 204. Can't exec "": No such file or directory at /gnu/store/mfnmg1m37kyrb65alnj6jn2fzw7zkapw-autoconf-cross-2.69/share/autoconf/Autom4te/FileUtils.pm line 345. to me that's just as cryptic as Perl code itself. I'll have a look into that later tonight. Greetings, janneke