281 lines
12 KiB
Scheme
281 lines
12 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2013, 2014 Ludovic Courtès <ludo@gnu.org>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (gnu packages cross-base)
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#:use-module (guix licenses)
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#:use-module (gnu packages)
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#:use-module (gnu packages gcc)
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#:use-module (gnu packages base)
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#:use-module (gnu packages linux)
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#:use-module (guix packages)
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#:use-module (guix download)
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#:use-module (guix utils)
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#:use-module (guix build-system gnu)
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#:use-module (guix build-system trivial)
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#:use-module (srfi srfi-1)
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#:use-module (srfi srfi-26)
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#:use-module (ice-9 match)
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#:export (cross-binutils
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cross-libc
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cross-gcc))
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(define (cross p target)
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(package (inherit p)
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(location (source-properties->location (current-source-location)))
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(name (string-append (package-name p) "-cross-" target))
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(arguments
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(substitute-keyword-arguments (package-arguments p)
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((#:configure-flags flags)
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`(cons ,(string-append "--target=" target)
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,flags))))))
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(define (cross-binutils target)
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"Return a cross-Binutils for TARGET."
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(let ((binutils (package (inherit binutils)
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(arguments
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(substitute-keyword-arguments (package-arguments
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binutils)
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((#:configure-flags flags)
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;; Build with `--with-sysroot' so that ld honors
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;; DT_RUNPATH entries when searching for a needed
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;; library. This works because as a side effect
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;; `genscripts.sh' sets `USE_LIBPATH=yes', which tells
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;; elf32.em to use DT_RUNPATH in its search list.
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;; See <http://sourceware.org/ml/binutils/2013-05/msg00312.html>.
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;;
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;; In theory choosing / as the sysroot could lead ld
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;; to pick up native libs instead of target ones. In
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;; practice the RUNPATH of target libs only refers to
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;; target libs, not native libs, so this is safe.
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`(cons "--with-sysroot=/" ,flags)))))))
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(cross binutils target)))
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(define* (cross-gcc target
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#:optional (xbinutils (cross-binutils target)) libc)
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"Return a cross-compiler for TARGET, where TARGET is a GNU triplet. Use
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XBINUTILS as the associated cross-Binutils. If LIBC is false, then build a
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GCC that does not target a libc; otherwise, target that libc."
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(package (inherit gcc-4.8)
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(name (string-append "gcc-cross-"
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(if libc "" "sans-libc-")
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target))
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(source (origin (inherit (package-source gcc-4.8))
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(patches
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(list (search-patch
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"gcc-cross-environment-variables.patch")))))
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;; For simplicity, use a single output. Otherwise libgcc_s & co. are not
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;; found by default, etc.
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(outputs '("out"))
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(arguments
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`(#:implicit-inputs? #f
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#:modules ((guix build gnu-build-system)
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(guix build utils)
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(ice-9 regex)
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(srfi srfi-1)
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(srfi srfi-26))
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,@(substitute-keyword-arguments (package-arguments gcc-4.8)
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((#:configure-flags flags)
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`(append (list ,(string-append "--target=" target)
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,@(gcc-configure-flags-for-triplet target)
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,@(if libc
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'()
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`( ;; Disable features not needed at this stage.
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"--disable-shared" "--enable-static"
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;; Disable C++ because libstdc++'s
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;; configure script otherwise fails with
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;; "Link tests are not allowed after
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;; GCC_NO_EXECUTABLES."
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"--enable-languages=c"
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"--disable-threads" ; libgcc, would need libc
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"--disable-libatomic"
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"--disable-libmudflap"
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"--disable-libgomp"
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"--disable-libssp"
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"--disable-libquadmath"
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"--disable-decimal-float" ; would need libc
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)))
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,(if libc
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flags
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`(remove (cut string-match "--enable-languages.*" <>)
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,flags))))
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((#:make-flags flags)
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(if libc
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`(let ((libc (assoc-ref %build-inputs "libc")))
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;; FLAGS_FOR_TARGET are needed for the target libraries to
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;; receive the -Bxxx for the startfiles.
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(cons (string-append "FLAGS_FOR_TARGET=-B" libc "/lib")
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,flags))
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flags))
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((#:phases phases)
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(let ((phases
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`(alist-cons-after
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'install 'make-cross-binutils-visible
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(lambda* (#:key outputs inputs #:allow-other-keys)
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(let* ((out (assoc-ref outputs "out"))
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(libexec (string-append out "/libexec/gcc/"
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,target))
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(binutils (string-append
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(assoc-ref inputs "binutils-cross")
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"/bin/" ,target "-")))
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(for-each (lambda (file)
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(symlink (string-append binutils file)
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(string-append libexec "/"
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file)))
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'("as" "ld" "nm"))
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#t))
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,phases)))
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(if libc
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`(alist-cons-before
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'configure 'set-cross-path
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(lambda* (#:key inputs #:allow-other-keys)
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;; Add the cross Linux headers to CROSS_CPATH, and remove
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;; them from CPATH.
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(let ((libc (assoc-ref inputs "libc"))
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(linux (assoc-ref inputs
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"libc/cross-linux-headers")))
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(define (cross? x)
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;; Return #t if X is a cross-libc or cross Linux.
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(or (string-prefix? libc x)
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(string-prefix? linux x)))
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(setenv "CROSS_CPATH"
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(string-append libc "/include:"
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linux "/include"))
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(setenv "CROSS_LIBRARY_PATH"
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(string-append libc "/lib"))
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(let ((cpath (search-path-as-string->list
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(getenv "CPATH")))
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(libpath (search-path-as-string->list
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(getenv "LIBRARY_PATH"))))
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(setenv "CPATH"
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(list->search-path-as-string
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(remove cross? cpath) ":"))
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(setenv "LIBRARY_PATH"
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(list->search-path-as-string
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(remove cross? libpath) ":"))
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#t)))
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,phases)
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phases)))
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((#:strip-binaries? _)
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;; Disable stripping as this can break binaries, with object files
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;; of libgcc.a showing up as having an unknown architecture. See
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;; <http://lists.fedoraproject.org/pipermail/arm/2010-August/000663.html>
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;; for instance.
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#f))))
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(native-inputs
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`(("binutils-cross" ,xbinutils)
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;; Call it differently so that the builder can check whether the "libc"
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;; input is #f.
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("libc-native" ,@(assoc-ref %final-inputs "libc"))
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;; Remaining inputs.
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,@(let ((inputs (append (package-inputs gcc-4.8)
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(alist-delete "libc" %final-inputs))))
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(if libc
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`(("libc" ,libc)
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,@inputs)
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inputs))))
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(inputs '())
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;; Only search target inputs, not host inputs.
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(search-paths
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(list (search-path-specification
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(variable "CROSS_CPATH")
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(directories '("include")))
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(search-path-specification
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(variable "CROSS_LIBRARY_PATH")
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(directories '("lib" "lib64")))))
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(native-search-paths '())))
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(define* (cross-libc target
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#:optional
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(xgcc (cross-gcc target))
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(xbinutils (cross-binutils target)))
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"Return a libc cross-built for TARGET, a GNU triplet. Use XGCC and
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XBINUTILS and the cross tool chain."
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(define xlinux-headers
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(package (inherit linux-libre-headers)
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(name (string-append (package-name linux-libre-headers)
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"-cross-" target))
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(arguments
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(substitute-keyword-arguments (package-arguments linux-libre-headers)
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((#:phases phases)
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`(alist-replace
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'build
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(lambda _
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(setenv "ARCH" ,(system->linux-architecture target))
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(format #t "`ARCH' set to `~a' (cross compiling)~%" (getenv "ARCH"))
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(and (zero? (system* "make" "defconfig"))
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(zero? (system* "make" "mrproper" "headers_check"))))
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,phases))))
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(native-inputs `(("cross-gcc" ,xgcc)
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("cross-binutils" ,xbinutils)
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,@(package-native-inputs linux-libre-headers)))))
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(package (inherit glibc)
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(name (string-append "glibc-cross-" target))
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(arguments
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(substitute-keyword-arguments
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`(#:strip-binaries? #f ; disable stripping (see above)
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,@(package-arguments glibc))
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((#:configure-flags flags)
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`(cons ,(string-append "--host=" target)
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,flags))
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((#:phases phases)
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`(alist-cons-before
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'configure 'set-cross-linux-headers-path
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(lambda* (#:key inputs #:allow-other-keys)
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(let ((linux (assoc-ref inputs "cross-linux-headers")))
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(setenv "CROSS_CPATH"
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(string-append linux "/include"))
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#t))
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,phases))))
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(propagated-inputs `(("cross-linux-headers" ,xlinux-headers)))
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(native-inputs `(("cross-gcc" ,xgcc)
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("cross-binutils" ,xbinutils)
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,@(package-native-inputs glibc)))))
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;;;
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;;; Concrete cross toolchains.
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;;;
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(define-public xgcc-mips64el
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(let ((triplet "mips64el-linux-gnuabi64")) ; N64 ABI
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(cross-gcc triplet
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(cross-binutils triplet)
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(cross-libc triplet))))
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;; (define-public xgcc-armel
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;; (let ((triplet "armel-linux-gnueabi"))
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;; (cross-gcc triplet
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;; (cross-binutils triplet)
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;; (cross-libc triplet))))
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