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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2013, 2014, 2015, 2016, 2017, 2018, 2020 Ludovic Courtès <>
;;; Copyright © 2014, 2015, 2018 Mark H Weaver <>
;;; Copyright © 2016, 2019 Jan (janneke) Nieuwenhuizen <>
;;; Copyright © 2016 Manolis Fragkiskos Ragkousis <>
;;; Copyright © 2018 Tobias Geerinckx-Rice <>
;;; Copyright © 2019, 2020 Marius Bakke <>
;;; Copyright © 2019 Carl Dong <>
;;; Copyright © 2020 Mathieu Othacehe <>
;;; 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
;;; 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 <>.
(define-module (gnu packages cross-base)
#:use-module (gnu packages)
#:use-module (gnu packages gcc)
#:use-module (gnu packages base)
#:use-module (gnu packages linux)
#:use-module (gnu packages hurd)
#:use-module (gnu packages mingw)
#:use-module (guix packages)
#:use-module (guix download)
#:use-module (guix utils)
#:use-module (guix build-system gnu)
#:use-module (guix build-system trivial)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-26)
#:use-module (ice-9 match)
#:use-module (ice-9 regex)
#:export (cross-binutils
(define-syntax %xgcc
;; GCC package used as the basis for cross-compilation. It doesn't have to
;; be 'gcc' and can be a specific variant such as 'gcc-4.8'.
;; Note: This is a macro so that we do not refer to 'gcc' from the top
;; level, which would lead to circular-dependency issues.
(identifier-syntax gcc))
(define %gcc-include-paths
;; Environment variables for header search paths.
;; Note: See <> for why not 'CPATH'.
(define %gcc-cross-include-paths
;; Search path for target headers when cross-compiling.
(map (cut string-append "CROSS_" <>) %gcc-include-paths))
(define (cross p target)
(package (inherit p)
(name (string-append (package-name p) "-cross-" target))
(substitute-keyword-arguments (package-arguments p)
((#:configure-flags flags)
`(cons ,(string-append "--target=" target)
(define* (cross-binutils target #:optional (binutils binutils))
"Return a cross-Binutils for TARGET using BINUTILS."
(let ((binutils (package (inherit binutils)
(substitute-keyword-arguments (package-arguments
((#:configure-flags flags)
;; Build with `--with-sysroot' so that ld honors
;; DT_RUNPATH entries when searching for a needed
;; library. This works because as a side effect
;; `' sets `USE_LIBPATH=yes', which tells
;; elf32.em to use DT_RUNPATH in its search list.
;; See <>.
;; In theory choosing / as the sysroot could lead ld
;; to pick up native libs instead of target ones. In
;; practice the RUNPATH of target libs only refers to
;; target libs, not native libs, so this is safe.
`(cons "--with-sysroot=/" ,flags)))))))
;; For Xtensa, apply Qualcomm's patch.
(cross (cond ((string-prefix? "xtensa-" target)
(package-with-patches binutils
((target-mingw? target)
(search-patches "binutils-mingw-w64-timestamp.patch"
(else binutils))
(define (cross-gcc-arguments target xgcc libc)
"Return build system arguments for a cross-gcc for TARGET, using XGCC as the
base compiler and using LIBC (which may be either a libc package or #f.)"
;; Set the current target system so that 'glibc-dynamic-linker' returns the
;; right name.
(parameterize ((%current-target-system target))
;; Disable stripping as this can break binaries, with object files of
;; libgcc.a showing up as having an unknown architecture. See
;; <>
;; for instance.
(let ((args `(#:strip-binaries? #f
,@(package-arguments xgcc))))
(substitute-keyword-arguments args
((#:configure-flags flags)
`(append (list ,(string-append "--target=" target)
,@(if libc
`( ;; Disable libcilkrts because it is not
;; ported to GNU/Hurd.
;; When building a cross compiler, --with-sysroot is
;; implicitly set to "$gcc_tooldir/sys-root". This does
;; not work for us, because --with-native-system-header-dir
;; is searched for relative to this location. Thus, we set
;; it to "/" so GCC is able to find the target libc headers.
;; This is safe because in practice GCC uses CROSS_CPATH
;; & co to separate target and host libraries.
`( ;; Disable features not needed at this stage.
"--disable-shared" "--enable-static"
;; libstdc++ cannot be built at this stage
;; ("Link tests are not allowed after
"--disable-threads" ;libgcc, would need libc
"--disable-decimal-float" ;would need libc
;; When target is any OS other than 'none' these
;; libraries will fail if there is no libc
;; present. See
;; <>
;; Install cross-built libraries such as in
;; the "lib" output.
,@(if libc
`((string-append "--with-toolexeclibdir="
(assoc-ref %outputs "lib")
"/" ,target "/lib"))
;; For a newlib (non-glibc) target
,@(if (cross-newlib? target)
,(if libc
`(remove (cut string-match "--enable-languages.*" <>)
((#:make-flags flags)
(if libc
`(let ((libc (assoc-ref %build-inputs "libc")))
;; FLAGS_FOR_TARGET are needed for the target libraries to receive
;; the -Bxxx for the startfiles.
(cons (string-append "FLAGS_FOR_TARGET=-B" libc "/lib")
((#:phases phases)
`(cross-gcc-build-phases ,target ,phases))))))
(define (cross-gcc-patches xgcc target)
"Return GCC patches needed for XGCC and TARGET."
(cond ((string-prefix? "xtensa-" target)
;; Patch by Qualcomm needed to build the ath9k-htc firmware.
(search-patches "ath9k-htc-firmware-gcc.patch"))
((target-mingw? target)
(append (search-patches "gcc-4.9.3-mingw-gthr-default.patch")
(if (version>=? (package-version xgcc) "7.0")
(search-patches "gcc-7-cross-mingw.patch")
(else '())))
(define (cross-gcc-snippet target)
"Return GCC snippet needed for TARGET."
,@(if (target-mingw? target)
'((copy-recursively "libstdc++-v3/config/os/mingw32-w64"
;; TOOLDIR_BASE_PREFIX is erroneous when using a separate "lib"
;; output. Specify it correctly, otherwise GCC won't find its shared
;; libraries installed in the "lib" output. See:
(substitute* "gcc/"
(define* (cross-gcc target
(xgcc %xgcc)
(xbinutils (cross-binutils target))
(libc #f))
"Return a cross-compiler for TARGET, where TARGET is a GNU triplet. Use
XGCC as the base compiler. Use XBINUTILS as the associated cross-Binutils.
If LIBC is false, then build a GCC that does not target a libc; otherwise,
target that libc."
(package (inherit xgcc)
(name (string-append "gcc-cross-"
(if libc "" "sans-libc-")
(inherit (package-source xgcc))
(origin-patches (package-source xgcc))
(append (cond
((version>=? (package-version xgcc) "8.0")
(search-patches "gcc-8-cross-environment-variables.patch"))
((version>=? (package-version xgcc) "6.0")
(search-patches "gcc-7-cross-toolexeclibdir.patch"
(search-patches "gcc-cross-environment-variables.patch")))
(cross-gcc-patches xgcc target))))
(modules '((guix build utils)))
(cross-gcc-snippet target))))
(outputs '("out" "lib"))
`(#:implicit-inputs? #f
#:imported-modules ((gnu build cross-toolchain)
#:modules ((guix build gnu-build-system)
(guix build utils)
(gnu build cross-toolchain)
(srfi srfi-1)
(srfi srfi-26)
(ice-9 regex))
,@(cross-gcc-arguments target xgcc libc)))
`(("ld-wrapper-cross" ,(make-ld-wrapper
(string-append "ld-wrapper-" target)
#:target (const target)
#:binutils xbinutils))
("binutils-cross" ,xbinutils)
,@(let ((inputs (append (package-inputs xgcc)
(fold alist-delete (%final-inputs)
'("libc" "libc:static"))
;; Call it differently so that the builder can
;; check whether the "libc" input is #f.
,@(assoc-ref (%final-inputs) "libc"))
,@(assoc-ref (%final-inputs)
((target-mingw? target)
(if libc
("libc" ,libc))
("mingw-source" ,(package-source mingw-w64)))))
("libc" ,libc)
("libc:static" ,libc "static")
("xkernel-headers" ;the target headers
,@(assoc-ref (package-propagated-inputs libc)
(else inputs)))))
(inputs '())
;; Only search target inputs, not host inputs.
(search-paths (cons (search-path-specification
(files '("lib" "lib64")))
(map (lambda (variable)
(variable variable)
;; Add 'include/c++' here so that <cstdlib>'s
;; "#include_next <stdlib.h>" finds GCC's
;; <stdlib.h>, not libc's.
(files (match variable
'("include/c++" "include"))
(native-search-paths '())))
(define* (cross-kernel-headers target
(linux-headers linux-libre-headers)
(xgcc (cross-gcc target))
(xbinutils (cross-binutils target)))
"Return headers depending on TARGET."
(define xlinux-headers
(package (inherit linux-headers)
(name (string-append (package-name linux-headers)
"-cross-" target))
`(#:implicit-cross-inputs? #f
,@(package-arguments linux-headers))
((#:phases phases)
(lambda _
(setenv "ARCH" ,(system->linux-architecture target))
(format #t "`ARCH' set to `~a' (cross compiling)~%" (getenv "ARCH"))
(invoke "make" ,(system->defconfig target))
(invoke "make" "mrproper" "headers_check"))
(native-inputs `(("cross-gcc" ,xgcc)
("cross-binutils" ,xbinutils)
,@(package-native-inputs linux-headers)))))
(define xgnumach-headers
(package (inherit gnumach-headers)
(name (string-append (package-name gnumach-headers)
"-cross-" target))
(native-inputs `(("cross-gcc" ,xgcc)
("cross-binutils" ,xbinutils)
,@(package-native-inputs gnumach-headers)))))
(define xmig
(package (inherit mig)
(name (string-append "mig-cross"))
`(#:modules ((guix build gnu-build-system)
(guix build utils)
(srfi srfi-26))
#:phases (modify-phases %standard-phases
(add-before 'configure 'set-cross-headers-path
(lambda* (#:key inputs #:allow-other-keys)
(let* ((mach (assoc-ref inputs "cross-gnumach-headers"))
(cpath (string-append mach "/include")))
(for-each (cut setenv <> cpath)
#:configure-flags (list ,(string-append "--target=" target))
#:tests? #f))
(propagated-inputs `(("cross-gnumach-headers" ,xgnumach-headers)))
(native-inputs `(("cross-gcc" ,xgcc)
("cross-binutils" ,xbinutils)
,@(package-native-inputs mig)))))
(define xhurd-headers
(package (inherit hurd-headers)
(name (string-append (package-name hurd-headers)
"-cross-" target))
(native-inputs `(("cross-gcc" ,xgcc)
("cross-binutils" ,xbinutils)
("cross-mig" ,xmig)
,@(alist-delete "mig"(package-native-inputs hurd-headers))))))
(define xglibc/hurd-headers
(package (inherit glibc/hurd-headers)
(name (string-append (package-name glibc/hurd-headers)
"-cross-" target))
`(#:modules ((guix build gnu-build-system)
(guix build utils)
(srfi srfi-26))
,@(package-arguments glibc/hurd-headers))
((#:phases phases)
`(modify-phases ,phases
(add-after 'unpack 'set-cross-headers-path
(lambda* (#:key inputs #:allow-other-keys)
(let* ((mach (assoc-ref inputs "gnumach-headers"))
(hurd (assoc-ref inputs "hurd-headers"))
(cpath (string-append mach "/include:"
hurd "/include")))
(for-each (cut setenv <> cpath)
(propagated-inputs `(("gnumach-headers" ,xgnumach-headers)
("hurd-headers" ,xhurd-headers)))
(native-inputs `(("cross-gcc" ,xgcc)
("cross-binutils" ,xbinutils)
("cross-mig" ,xmig)
,@(alist-delete "mig"(package-native-inputs glibc/hurd-headers))))))
(define xhurd-minimal
(package (inherit hurd-minimal)
(name (string-append (package-name hurd-minimal)
"-cross-" target))
`(#:modules ((guix build gnu-build-system)
(guix build utils)
(srfi srfi-26))
,@(package-arguments hurd-minimal))
((#:phases phases)
`(modify-phases ,phases
(add-before 'configure 'set-cross-headers-path
(lambda* (#:key inputs #:allow-other-keys)
(let* ((glibc-headers (assoc-ref inputs "cross-glibc-hurd-headers"))
(cpath (string-append glibc-headers "/include")))
(for-each (cut setenv <> cpath)
(inputs `(("cross-glibc-hurd-headers" ,xglibc/hurd-headers)))
(native-inputs `(("cross-gcc" ,xgcc)
("cross-binutils" ,xbinutils)
("cross-mig" ,xmig)
,@(alist-delete "mig"(package-native-inputs hurd-minimal))))))
(define xhurd-core-headers
(package (inherit hurd-core-headers)
(name (string-append (package-name hurd-core-headers)
"-cross-" target))
(inputs `(("gnumach-headers" ,xgnumach-headers)
("hurd-headers" ,xhurd-headers)
("hurd-minimal" ,xhurd-minimal)))
(native-inputs `(("cross-gcc" ,xgcc)
("cross-binutils" ,xbinutils)
("cross-mig" ,xmig)
,@(package-native-inputs hurd-core-headers)))))
(match target
((or "i586-pc-gnu" "i586-gnu") xhurd-core-headers)
(_ xlinux-headers)))
(define* (cross-libc target
(libc glibc)
(xgcc (cross-gcc target))
(xbinutils (cross-binutils target))
(xheaders (cross-kernel-headers target)))
"Return LIBC cross-built for TARGET, a GNU triplet. Use XGCC and XBINUTILS
and the cross tool chain."
(if (cross-newlib? target libc)
(native-libc target libc
#:xgcc xgcc
#:xbinutils xbinutils)
(inherit libc)
(name (string-append "glibc-cross-" target))
`( ;; Disable stripping (see above.)
#:strip-binaries? #f
;; This package is used as a target input, but it should not have
;; the usual cross-compilation inputs since that would include
;; itself.
#:implicit-cross-inputs? #f
;; We need SRFI 26.
#:modules ((guix build gnu-build-system)
(guix build utils)
(srfi srfi-26))
,@(package-arguments libc))
((#:configure-flags flags)
`(cons ,(string-append "--host=" target)
,(if (hurd-triplet? target)
`(cons "--disable-werror" ,flags)
((#:phases phases)
`(modify-phases ,phases
(add-before 'configure 'set-cross-kernel-headers-path
(lambda* (#:key inputs #:allow-other-keys)
(let* ((kernel (assoc-ref inputs "kernel-headers"))
(cpath (string-append kernel "/include")))
(for-each (cut setenv <> cpath)
(string-append kernel "/lib")) ; for Hurd's libihash
,@(if (hurd-triplet? target)
'((add-after 'install '
(lambda* (#:key outputs #:allow-other-keys)
(let* ((out (assoc-ref outputs "out")))
(substitute* (string-append out "/lib/")
(("/[^ ]+/lib/")
(string-append out "/lib/"
;; TODO: move to glibc in the next rebuild cycle
(add-after 'unpack 'patch-libc/hurd
(lambda* (#:key inputs #:allow-other-keys)
(lambda (name)
(let ((patch (assoc-ref inputs name)))
(invoke "patch" "-p1" "--force" "-i" patch)))
;; Shadow the native "kernel-headers" because glibc's recipe expects the
;; "kernel-headers" input to point to the right thing.
(propagated-inputs `(("kernel-headers" ,xheaders)))
;; FIXME: 'static-bash' should really be an input, not a native input, but
;; to do that will require building an intermediate cross libc.
(inputs '())
(native-inputs `(("cross-gcc" ,xgcc)
("cross-binutils" ,xbinutils)
,@(if (hurd-triplet? target)
,@(assoc-ref (package-native-inputs xheaders)
;; TODO: move to glibc in the next rebuild cycle
,@(search-patches "glibc-hurd-mach-print.patch"))
,@(search-patches "glibc-hurd-gettyent.patch")))
,@(package-inputs libc) ;FIXME: static-bash
,@(package-native-inputs libc))))))
(define* (native-libc target
(libc glibc)
(if (target-mingw? target)
(let ((machine (substring target 0 (string-index target #\-))))
(make-mingw-w64 machine
#:xgcc xgcc
#:xbinutils xbinutils))
(define* (cross-newlib? target
(libc glibc))
(not (eq? (native-libc target libc) libc)))
;;; Concrete cross tool chains are instantiated like this:
;; (define-public xgcc-armhf
;; (let ((triplet "arm-linux-gnueabihf"))
;; (cross-gcc triplet
;; #:xbinutils (cross-binutils triplet)
;; #:libc (cross-libc triplet))))
;;; We don't do that here because we'd be referring to bindings from (gnu
;;; packages gcc) from the top level, which doesn't play well with circular
;;; dependencies among modules.