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build/zig: Really support cross compilation.

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* guix/build/zig-build-system.scm (configure): New procedure.
(set-cc,set-zig-global-cache-dir): Delete procedures.
(%standard-phases): Adjust accordingly.

Change-Id: I08d15add2b249f7016f9cbb07f151ecf469fe656
This commit is contained in:
Hilton Chain 2024-11-17 02:42:35 +08:00
parent 8808ea98ae
commit 6fc811d02a
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GPG key ID: ACC66D09CA528292
1 changed files with 19 additions and 10 deletions
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29
guix/build/zig-build-system.scm
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@ -1,5 +1,6 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2023 Ekaitz Zarraga <ekaitz@elenq.tech>
;;; Copyright © 2024 Hilton Chain <hako@ultrarare.space>
;;;
;;; This file is part of GNU Guix.
;;;
@ -34,14 +35,24 @@ (define-module (guix build zig-build-system)
;; https://github.com/riverwm/river/blob/master/PACKAGING.md
(define global-cache-dir "zig-cache")
(define* (set-cc #:rest args)
;; TODO: Zig needs the gcc-toolchain in order to find the libc.
;; we need to think about how to solve this in the build system
;; directly: --libc
(setenv "CC" "gcc"))
(define* (configure #:key inputs target #:allow-other-keys)
;; Set cache dir, otherwise Zig looks for `$HOME/.cache'.
(setenv "ZIG_GLOBAL_CACHE_DIR" global-cache-dir)
(define* (set-zig-global-cache-dir #:rest args)
(setenv "ZIG_GLOBAL_CACHE_DIR" global-cache-dir))
;; Libc paths for target.
(let ((libc (assoc-ref inputs (if target "cross-libc" "libc")))
(port (open-file "/tmp/guix-zig-libc-paths" "w" #:encoding "utf8")))
(display
(string-append "\
include_dir=" libc "/include
sys_include_dir=" libc "/include
crt_dir=" libc "/lib
msvc_lib_dir=
kernel32_lib_dir=
gcc_dir=")
port)
(close-port port))
(setenv "ZIG_LIBC" "/tmp/guix-zig-libc-paths"))
(define* (build #:key
zig-build-flags
@ -91,9 +102,7 @@ (define* (install #:key inputs outputs #:allow-other-keys)
(define %standard-phases
(modify-phases gnu:%standard-phases
(delete 'bootstrap)
(delete 'configure)
(add-before 'build 'set-zig-global-cache-dir set-zig-global-cache-dir)
(add-before 'build 'set-cc set-cc)
(replace 'configure configure)
(replace 'build build)
(replace 'check check)
(replace 'install install)))