From c4f25c1759b5d8cff1f3198144b2495b502db99c Mon Sep 17 00:00:00 2001 Message-Id: From: Efraim Flashner Date: Mon, 26 Apr 2021 21:13:06 +0300 Subject: [PATCH v4] build/go: Support cross compiling. * guix/build-system/go.scm (go-target): New procedure. (go-build): Add goarch, goos keywords. (lower): Only add target to private-keywords when not cross compiling. Adjust bag depending if doing a native or cross compile. (go-cross-build): New procedure. * guix/build/go-build-system.scm (setup-go-environment): Accept goarch, goos keywords. Set go environment variables based on target architecture. --- guix/build-system/go.scm | 164 +++++++++++++++++++++++++++++---- guix/build/go-build-system.scm | 19 +++- 2 files changed, 165 insertions(+), 18 deletions(-) diff --git a/guix/build-system/go.scm b/guix/build-system/go.scm index 8f55796e86..55db449cdf 100644 --- a/guix/build-system/go.scm +++ b/guix/build-system/go.scm @@ -2,6 +2,7 @@ ;;; Copyright © 2016 Petter ;;; Copyright © 2017 Leo Famulari ;;; Copyright © 2020 Jakub Kądziołka +;;; Copyright © 2021 Efraim Flashner ;;; ;;; This file is part of GNU Guix. ;;; @@ -27,6 +28,7 @@ #:use-module (guix packages) #:use-module (ice-9 match) #:use-module (ice-9 regex) + #:use-module (srfi srfi-1) #:export (%go-build-system-modules go-build go-build-system @@ -78,6 +80,24 @@ present) if a pseudo-version pattern is not recognized." commit hash and its date rather than a proper release tag." (regexp-exec %go-pseudo-version-rx version)) +(define (go-target target) + ;; Parse the nix-system equivalent of the target and set the + ;; target for compilation accordingly. + (match (string-split (gnu-triplet->nix-system target) #\-) + ((arch os) + (list (match arch + ("aarch64" "arm64") + ("armhf" "arm") + ("powerpc64le" "ppc64le") + ("powerpc64" "ppc64") + ("i686" "386") + ("x86_64" "amd64") + ("mips64el" "mips64le") + (_ arch)) + (match os + ((or "mingw32" "cygwin") "windows") + (_ os)))))) + (define %go-build-system-modules ;; Build-side modules imported and used by default. `((guix build go-build-system) @@ -96,24 +116,40 @@ commit hash and its date rather than a proper release tag." #:rest arguments) "Return a bag for NAME." (define private-keywords - '(#:source #:target #:go #:inputs #:native-inputs)) + `(#:source #:go #:inputs #:native-inputs + ,@(if target '() '(#:target)))) - (and (not target) ;XXX: no cross-compilation - (bag - (name name) - (system system) - (host-inputs `(,@(if source - `(("source" ,source)) - '()) - ,@inputs + (bag + (name name) + (system system) + (target target) + (build-inputs `(,@(if source + `(("source" ,source)) + '()) + ,@`(("go" ,go)) + ,@native-inputs + ,@(if target '() inputs) + ,@(if target + ;; Use the standard cross inputs of + ;; 'gnu-build-system'. + (standard-cross-packages target 'host) + '()) + ;; Keep the standard inputs of 'gnu-build-system'. + ,@(standard-packages))) + (host-inputs (if target inputs '())) - ;; Keep the standard inputs of 'gnu-build-system'. - ,@(standard-packages))) - (build-inputs `(("go" ,go) - ,@native-inputs)) - (outputs outputs) - (build go-build) - (arguments (strip-keyword-arguments private-keywords arguments))))) + ;; The cross-libc is really a target package, but for bootstrapping + ;; reasons, we can't put it in 'host-inputs'. Namely, 'cross-gcc' is a + ;; native package, so it would end up using a "native" variant of + ;; 'cross-libc' (built with 'gnu-build'), whereas all the other packages + ;; would use a target variant (built with 'gnu-cross-build'.) + (target-inputs (if target + (standard-cross-packages target 'target) + '())) + + (outputs outputs) + (build (if target go-cross-build go-build)) + (arguments (strip-keyword-arguments private-keywords arguments)))) (define* (go-build store name inputs #:key @@ -128,6 +164,8 @@ commit hash and its date rather than a proper release tag." (tests? #t) (allow-go-reference? #f) (system (%current-system)) + (goarch (first (go-target (%current-system)))) + (goos (last (go-target (%current-system)))) (guile #f) (imported-modules %go-build-system-modules) (modules '((guix build go-build-system) @@ -147,6 +185,8 @@ commit hash and its date rather than a proper release tag." #:system ,system #:phases ,phases #:outputs %outputs + #:goarch ,goarch + #:goos ,goos #:search-paths ',(map search-path-specification->sexp search-paths) #:install-source? ,install-source? @@ -174,6 +214,98 @@ commit hash and its date rather than a proper release tag." #:outputs outputs #:guile-for-build guile-for-build)) +(define* (go-cross-build store name + #:key + target native-drvs target-drvs + (phases '(@ (guix build go-build-system) + %standard-phases)) + (outputs '("out")) + (search-paths '()) + (native-search-paths '()) + (install-source? #t) + (import-path "") + (unpack-path "") + (build-flags ''()) + (tests? #f) ; nothing can be done + (allow-go-reference? #f) + (system (%current-system)) + (goarch (first (go-target target))) + (goos (last (go-target target))) + (guile #f) + (imported-modules %go-build-system-modules) + (modules '((guix build go-build-system) + (guix build union) + (guix build utils)))) + "Cross-build NAME using GO, where TARGET is a GNU triplet and with INPUTS." + (define builder + `(begin + (use-modules ,@modules) + (let () + (define %build-host-inputs + ',(map (match-lambda + ((name (? derivation? drv) sub ...) + `(,name . ,(apply derivation->output-path drv sub))) + ((name path) + `(,name . ,path))) + native-drvs)) + + (define %build-target-inputs + ',(map (match-lambda + ((name (? derivation? drv) sub ...) + `(,name . ,(apply derivation->output-path drv sub))) + ((name (? package? pkg) sub ...) + (let ((drv (package-cross-derivation store pkg + target system))) + `(,name . ,(apply derivation->output-path drv sub)))) + ((name path) + `(,name . ,path))) + target-drvs)) + + (go-build #:name ,name + #:source ,(match (assoc-ref native-drvs "source") + (((? derivation? source)) + (derivation->output-path source)) + ((source) + source) + (source + source)) + #:system ,system + #:phases ,phases + #:outputs %outputs + #:target ,target + #:goarch ,goarch + #:goos ,goos + #:inputs %build-target-inputs + #:native-inputs %build-host-inputs + #:search-paths ',(map search-path-specification->sexp + search-paths) + #:native-search-paths ',(map + search-path-specification->sexp + native-search-paths) + #:install-source? ,install-source? + #:import-path ,import-path + #:unpack-path ,unpack-path + #:build-flags ,build-flags + #:tests? ,tests? + #:allow-go-reference? ,allow-go-reference? + #:inputs %build-inputs)))) + + (define guile-for-build + (match guile + ((? package?) + (package-derivation store guile system #:graft? #f)) + (#f ; the default + (let* ((distro (resolve-interface '(gnu packages commencement))) + (guile (module-ref distro 'guile-final))) + (package-derivation store guile system #:graft? #f))))) + + (build-expression->derivation store name builder + #:system system + #:inputs (append native-drvs target-drvs) + #:outputs outputs + #:modules imported-modules + #:guile-for-build guile-for-build)) + (define go-build-system (build-system (name 'go) diff --git a/guix/build/go-build-system.scm b/guix/build/go-build-system.scm index 227df820db..918ce074ad 100644 --- a/guix/build/go-build-system.scm +++ b/guix/build/go-build-system.scm @@ -4,7 +4,7 @@ ;;; Copyright © 2019 Maxim Cournoyer ;;; Copyright © 2020 Jack Hill ;;; Copyright © 2020 Jakub Kądziołka -;;; Copyright © 2020 Efraim Flashner +;;; Copyright © 2020, 2021 Efraim Flashner ;;; ;;; This file is part of GNU Guix. ;;; @@ -131,7 +131,7 @@ ;; ;; Code: -(define* (setup-go-environment #:key inputs outputs #:allow-other-keys) +(define* (setup-go-environment #:key inputs outputs goos goarch #:allow-other-keys) "Prepare a Go build environment for INPUTS and OUTPUTS. Build a file system union of INPUTS. Export GOPATH, which helps the compiler find the source code of the package being built and its dependencies, and GOBIN, which determines @@ -149,6 +149,21 @@ dependencies, so it should be self-contained." ;; GOPATH behavior. (setenv "GO111MODULE" "off") (setenv "GOBIN" (string-append (assoc-ref outputs "out") "/bin")) + + ;; Make sure we're building for the correct architecture and OS. + (setenv "GOARCH" goarch) + (setenv "GOOS" goos) + (match goarch + ("arm" + (setenv "GOARM" "7")) + ((or "mips" "mipsel") + (setenv "GOMIPS" "hardfloat")) + ((or "mips64" "mips64le") + (setenv "GOMIPS64" "hardfloat")) + ((or "ppc64" "ppc64le") + (setenv "GOPPC64" "power8")) + (_ #t)) + (let ((tmpdir (tmpnam))) (match (go-inputs inputs) (((names . directories) ...) base-commit: bb5f395a08deacb799ef1e085863ba01a5f05e70 -- 2.33.0