--- Begin Message ---
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Subject: |
[core-updates]: [PATCH] gnu: perl: Actually produce a host perl when cross-compiling. |
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Date: |
Sat, 18 Apr 2020 18:31:59 +0200 |
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
>From b96825876eea5c0dff9414d88a8dc3302b2d2f7f Mon Sep 17 00:00:00 2001
From: "Jan (janneke) Nieuwenhuizen" <address@hidden>
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(-)
diff --git a/gnu/packages/perl.scm b/gnu/packages/perl.scm
index d6a75506ec..67f4cb969c 100644
--- a/gnu/packages/perl.scm
+++ b/gnu/packages/perl.scm
@@ -11,7 +11,7 @@
;;; Copyright © 2016 Alex Sassmannshausen <address@hidden>
;;; Copyright © 2016, 2018, 2020 Roel Janssen <address@hidden>
;;; Copyright © 2016 Ben Woodcroft <address@hidden>
-;;; Copyright © 2016 Jan Nieuwenhuizen <address@hidden>
+;;; Copyright © 2016, 2020 Jan (janneke) Nieuwenhuizen <address@hidden>
;;; Copyright © 2017 Raoul J.P. Bonnal <address@hidden>
;;; Copyright © 2017, 2018 Marius Bakke <address@hidden>
;;; Copyright © 2017 Adriano Peluso <address@hidden>
@@ -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
--
Jan Nieuwenhuizen <address@hidden> | GNU LilyPond http://lilypond.org
Freelance IT http://JoyofSource.com | Avatar® http://AvatarAcademy.com
--- End Message ---
--- Begin Message ---
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Subject: |
Re: [bug#40698] [core-updates]: [PATCH v2] gnu: perl: Actually produce a host perl when cross-compiling. |
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Date: |
Mon, 20 Apr 2020 07:38:57 +0200 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/26.3 (gnu/linux) |
Marius Bakke writes:
Hello Marius,
>> Using this, I can cross-build perl and which allows me to ceate patches
>> to cross build, autoconf and automake that work to configure Guix git on
>> the Hurd.
>
> Wooow, awesome work (as usual)!
>
> Some feedback on the patch:
Wow, thanks!
>> - (which "pwd")))
>> + (which "pwd"))) ;TODO: fix cross-compile next rebuild cycle
>
> It might be clearer to add "TODO: use coreutils from INPUTS instead of
> 'which'" here, maybe mentioning the related substitution below.
Yes, changed now to
;; Use the right path for `pwd'.
;; TODO: use coreutils from INPUTS instead of 'which'
;; in next rebuild cycle, see fixup below.
(substitute* "dist/PathTools/Cwd.pm"
(("/bin/pwd")
(which "pwd")))
>> + (let ((cross-checkout (assoc-ref %build-inputs
>> "perl-cross")))
>> + (invoke "chmod" "-R" "+w" ".")
>
> Please use 'make-file-writable' instead of chmod.
Finally changed it to
(rename-file "Artistic" "Artistic.perl")
(rename-file "Copying" "Copying.perl")
>> + (copy-recursively cross-checkout "."))
>> + (let ((bash (assoc-ref %build-inputs "bash")))
>
> Use the scoped 'inputs' instead of the magical %build-inputs.
Ah, right! There is the scoped `native-inputs' too. I have always
missed that and been using %build-inputs instead. Hmm.
>> + (substitute* '("ext/Errno/Errno_pm.PL")
>> + (( "\\$cpp < errno.c") "gcc -E errno.c")))
>
> Should $cpp not be replaced with 'g++'?
No, I don't think so. The non-replaced value of $cpp is "gcc -E -P -", and
that breaks terribly; this substitution is only to remove -the `-P' and
input redirection. I did change this to the somewhat nicer
(substitute* '("ext/Errno/Errno_pm.PL")
(("\\$cpp < errno.c") "$Config{cc} -E errno.c")))
and mentioned this with my patch sent to `perl-cross'.
>> + #t))
>> + (replace 'configure
...
>> + (("/gnu/store/[^/]*-bash-[^/]*") bash))
>
> This phase should add a let binding for (%store-directory) and refer to
> that instead of the literal /gnu/store strings (see e.g. 'git').
Ah...nice! Done.
>> + (substitute* '("config.h")
>> + (("^#define OSNAME .*")
>> + (string-append "#define OSNAME \""
>> + ,(if (hurd-target?) "GNU" "Linux")
>
> Would it make sense to upstream this?
Yes, I think so. I created a patch, now added as `perl-cross.patch' too
and sent it upstream.
>> + "\"\n"))
>> + (("^# HAS_NANOSLEEP") "/* #undef HAS_NANOSLEEP */")
>
> Is this substitution required on all cross-compilation targets?
Good question. This is no longer necessary now that configure actually
detects the Hurd using gcc; togeether with my patch.
>> + ;; `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 "")))
>
> Using '(call-with-output-file "foo" (const #t))' is clearer IMO. Also
> consider using 'for-each' here.
Changed to
(with-directory-excursion "cpan"
(mkdir-p "Pod-Usage/blib/script")
(mkdir-p "Pod-Parser/blib/script")
(for-each (lambda (file)
(call-with-output-file file
(lambda (port) (display "" port))))
'("Pod-Usage/blib/script/pod2text"
"Pod-Usage/blib/script/pod2usage"
"Pod-Checker/blib/script/podchecker"
"Pod-Parser/blib/script/podselect")))
> Phew! Thanks a lot for this, LGTM!
With these changes, pushed to core-updates as
eaff60b35fed75c60d0db76c589e17d1500f60dd
Thanks a lot for your review, I was pretty certain that I missed some
things; but there were more things that I learned than I expected.
Also, a good question here and there is really helpful for me to improve
things or to do the right thing.
Greetings,
janneke
--
Jan Nieuwenhuizen <address@hidden> | GNU LilyPond http://lilypond.org
Freelance IT http://JoyofSource.com | Avatar® http://AvatarAcademy.com
--- End Message ---