[jackhill/guix/guix.git] / gnu / packages / cross-base.scm

;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2013, 2014, 2015 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2014, 2015 Mark H Weaver <mhw@netris.org>
;;;
;;; 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
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; 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 <http://www.gnu.org/licenses/>.

(define-module (gnu packages cross-base)
  #:use-module (guix licenses)
  #:use-module (gnu packages)
  #:use-module (gnu packages gcc)
  #:use-module (gnu packages base)
  #:use-module (gnu packages commencement)
  #:use-module (gnu packages linux)
  #: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)
  #:export (cross-binutils
            cross-libc
            cross-gcc))

(define %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'.
  gcc)

(define (cross p target)
  (package (inherit p)
    (name (string-append (package-name p) "-cross-" target))
    (arguments
     (substitute-keyword-arguments (package-arguments p)
       ((#:configure-flags flags)
        `(cons ,(string-append "--target=" target)
               ,flags))))))

(define (package-with-patch original patch)
  "Return package ORIGINAL with PATCH applied."
  (package (inherit original)
    (source (origin (inherit (package-source original))
              (patches (list patch))))))

(define (cross-binutils target)
  "Return a cross-Binutils for TARGET."
  (let ((binutils (package (inherit binutils)
                    (arguments
                     (substitute-keyword-arguments (package-arguments
                                                    binutils)
                       ((#: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
                        ;; `genscripts.sh' sets `USE_LIBPATH=yes', which tells
                        ;; elf32.em to use DT_RUNPATH in its search list.
                        ;; See <http://sourceware.org/ml/binutils/2013-05/msg00312.html>.
                        ;;
                        ;; 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 (if (string-prefix? "xtensa-" target)
               (package-with-patch binutils
                                   (search-patch
                                    "ath9k-htc-firmware-binutils.patch"))
               binutils)
           target)))

(define (cross-gcc-arguments target libc)
  "Return build system arguments for a cross-gcc for TARGET, 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
    ;; <http://lists.fedoraproject.org/pipermail/arm/2010-August/000663.html>
    ;; 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. 
                               "--disable-libcilkrts")
                             `( ;; Disable features not needed at this stage.
                               "--disable-shared" "--enable-static"

                               ;; Disable C++ because libstdc++'s configure
                               ;; script otherwise fails with "Link tests are not
                               ;; allowed after GCC_NO_EXECUTABLES."
                               "--enable-languages=c"

                               "--disable-threads" ;libgcc, would need libc
                               "--disable-libatomic"
                               "--disable-libmudflap"
                               "--disable-libgomp"
                               "--disable-libssp"
                               "--disable-libquadmath"
                               "--disable-decimal-float" ;would need libc
                               "--disable-libcilkrts"
                               )))

                 ,(if libc
                      flags
                      `(remove (cut string-match "--enable-languages.*" <>)
                               ,flags))))
       ((#: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")
                     ,flags))
            flags))
       ((#:phases phases)
        (let ((phases
               `(alist-cons-after
                 'install 'make-cross-binutils-visible
                 (lambda* (#:key outputs inputs #:allow-other-keys)
                   (let* ((out      (assoc-ref outputs "out"))
                          (libexec  (string-append out "/libexec/gcc/"
                                                   ,target))
                          (binutils (string-append
                                     (assoc-ref inputs "binutils-cross")
                                     "/bin/" ,target "-"))
                          (wrapper  (string-append
                                     (assoc-ref inputs "ld-wrapper-cross")
                                     "/bin/" ,target "-ld")))
                     (for-each (lambda (file)
                                 (symlink (string-append binutils file)
                                          (string-append libexec "/"
                                                         file)))
                               '("as" "nm"))
                     (symlink wrapper (string-append libexec "/ld"))
                     #t))
                 (alist-replace
                  'install
                  (lambda _
                    ;; Unlike our 'strip' phase, this will do the right thing
                    ;; for cross-compilers.
                    (zero? (system* "make" "install-strip")))
                  ,phases))))
          (if libc
              `(alist-cons-before
                'configure 'set-cross-path
                (lambda* (#:key inputs #:allow-other-keys)
                  ;; Add the cross Linux headers to CROSS_CPATH, and remove them
                  ;; from CPATH.
                  (let ((libc  (assoc-ref inputs "libc"))
                        (linux (assoc-ref inputs "xlinux-headers")))
                    (define (cross? x)
                      ;; Return #t if X is a cross-libc or cross Linux.
                      (or (string-prefix? libc x)
                          (string-prefix? linux x)))

                    (setenv "CROSS_CPATH"
                            (string-append libc "/include:"
                                           linux "/include"))
                    (setenv "CROSS_LIBRARY_PATH"
                            (string-append libc "/lib"))

                    (let ((cpath   (search-path-as-string->list
                                    (getenv "CPATH")))
                          (libpath (search-path-as-string->list
                                    (getenv "LIBRARY_PATH"))))
                      (setenv "CPATH"
                              (list->search-path-as-string
                               (remove cross? cpath) ":"))
                      (setenv "LIBRARY_PATH"
                              (list->search-path-as-string
                               (remove cross? libpath) ":"))
                      #t)))
                ,phases)
              phases)))))))

(define (cross-gcc-patches target)
  "Return GCC patches needed for TARGET."
  (cond ((string-prefix? "xtensa-" target)
         ;; Patch by Qualcomm needed to build the ath9k-htc firmware.
         (list (search-patch "ath9k-htc-firmware-gcc.patch")))
        (else '())))

(define* (cross-gcc target
                    #:optional (xbinutils (cross-binutils target)) libc)
  "Return a cross-compiler for TARGET, where TARGET is a GNU triplet.  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-")
                         target))
    (source (origin (inherit (package-source %xgcc))
              (patches
               (append
                (origin-patches (package-source %xgcc))
                (cons (search-patch "gcc-cross-environment-variables.patch")
                      (cross-gcc-patches target))))))

    ;; For simplicity, use a single output.  Otherwise libgcc_s & co. are not
    ;; found by default, etc.
    (outputs '("out"))

    (arguments
     `(#:implicit-inputs? #f
       #:modules ((guix build gnu-build-system)
                  (guix build utils)
                  (ice-9 regex)
                  (srfi srfi-1)
                  (srfi srfi-26))

       ,@(cross-gcc-arguments target libc)))

    (native-inputs
     `(("ld-wrapper-cross" ,(make-ld-wrapper
                             (string-append "ld-wrapper-" target)
                             #:target target
                             #:binutils xbinutils))
       ("binutils-cross" ,xbinutils)

       ;; Call it differently so that the builder can check whether the "libc"
       ;; input is #f.
       ("libc-native" ,@(assoc-ref %final-inputs "libc"))

       ;; Remaining inputs.
       ,@(let ((inputs (append (package-inputs %xgcc)
                               (alist-delete "libc" %final-inputs))))
           (if libc
               `(("libc" ,libc)
                 ("xlinux-headers"                ;the target headers
                  ,@(assoc-ref (package-propagated-inputs libc)
                               "linux-headers"))
                 ,@inputs)
               inputs))))

    (inputs '())

    ;; Only search target inputs, not host inputs.
    (search-paths
     (list (search-path-specification
            (variable "CROSS_CPATH")
            (files '("include")))
           (search-path-specification
            (variable "CROSS_LIBRARY_PATH")
            (files '("lib" "lib64")))))
    (native-search-paths '())))

(define* (cross-libc target
                     #:optional
                     (xgcc (cross-gcc target))
                     (xbinutils (cross-binutils target)))
  "Return a libc cross-built for TARGET, a GNU triplet.  Use XGCC and
XBINUTILS and the cross tool chain."
  (define xlinux-headers
    (package (inherit linux-libre-headers)
      (name (string-append (package-name linux-libre-headers)
                           "-cross-" target))
      (arguments
       (substitute-keyword-arguments
           `(#:implicit-cross-inputs? #f
             ,@(package-arguments linux-libre-headers))
         ((#:phases phases)
          `(alist-replace
            'build
            (lambda _
              (setenv "ARCH" ,(system->linux-architecture target))
              (format #t "`ARCH' set to `~a' (cross compiling)~%" (getenv "ARCH"))

              (and (zero? (system* "make" "defconfig"))
                   (zero? (system* "make" "mrproper" "headers_check"))))
            ,phases))))
      (native-inputs `(("cross-gcc" ,xgcc)
                       ("cross-binutils" ,xbinutils)
                       ,@(package-native-inputs linux-libre-headers)))))

  (package (inherit glibc)
    (name (string-append "glibc-cross-" target))
    (arguments
     (substitute-keyword-arguments
         `(;; 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

           ,@(package-arguments glibc))
       ((#:configure-flags flags)
        `(cons ,(string-append "--host=" target)
               ,flags))
       ((#:phases phases)
        `(alist-cons-before
          'configure 'set-cross-linux-headers-path
          (lambda* (#:key inputs #:allow-other-keys)
            (let ((linux (assoc-ref inputs "linux-headers")))
              (setenv "CROSS_CPATH"
                      (string-append linux "/include"))
              #t))
          ,phases))))

    ;; Shadow the native "linux-headers" because glibc's recipe expects the
    ;; "linux-headers" input to point to the right thing.
    (propagated-inputs `(("linux-headers" ,xlinux-headers)))

    ;; 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)
                     ,@(package-inputs glibc)     ;FIXME: static-bash
                     ,@(package-native-inputs glibc)))))

\f
;;;
;;; Concrete cross toolchains.
;;;

(define-public xgcc-mips64el
  (let* ((triplet "mips64el-linux-gnuabi64")      ;N64 ABI
         (xgcc    (cross-gcc triplet
                             (cross-binutils triplet)
                             (cross-libc triplet))))
    ;; Don't attempt to build this cross-compiler on i686;
    ;; see <http://bugs.gnu.org/19598>.
    (package (inherit xgcc)
      (supported-systems (fold delete
                               (package-supported-systems xgcc)
                               '("mips64el-linux" "i686-linux"))))))

(define-public xgcc-avr
  ;; AVR cross-compiler, used to build AVR-Libc.
  (let ((triplet "avr"))
    (cross-gcc triplet
               (cross-binutils triplet))))

(define-public xgcc-xtensa
  ;; Bare-bones Xtensa cross-compiler, used to build the Atheros firmware.
  (cross-gcc "xtensa-elf"))

(define-public xgcc-armhf
  (let* ((triplet "arm-linux-gnueabihf")
         (xgcc    (cross-gcc triplet
                             (cross-binutils triplet)
                             (cross-libc triplet))))
    (package (inherit xgcc)
      (supported-systems (delete "armhf-linux" %supported-systems)))))

;; (define-public xgcc-armel
;;   (let ((triplet "armel-linux-gnueabi"))
;;     (cross-gcc triplet
;;                (cross-binutils triplet)
;;                (cross-libc triplet))))
Commit	Line	Data
827d2891	1	;;; GNU Guix --- Functional package management for GNU
6ee01481	2	;;; Copyright © 2013, 2014, 2015 Ludovic Courtès <ludo@gnu.org>
3f00ff8b	3	;;; Copyright © 2014, 2015 Mark H Weaver <mhw@netris.org>
827d2891 LC	4	;;;
	5	;;; This file is part of GNU Guix.
	6	;;;
	7	;;; GNU Guix is free software; you can redistribute it and/or modify it
	8	;;; under the terms of the GNU General Public License as published by
	9	;;; the Free Software Foundation; either version 3 of the License, or (at
	10	;;; your option) any later version.
	11	;;;
	12	;;; GNU Guix is distributed in the hope that it will be useful, but
	13	;;; WITHOUT ANY WARRANTY; without even the implied warranty of
	14	;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	;;; GNU General Public License for more details.
	16	;;;
	17	;;; You should have received a copy of the GNU General Public License
	18	;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
	19
	20	(define-module (gnu packages cross-base)
	21	#:use-module (guix licenses)
	22	#:use-module (gnu packages)
f594028a	23	#:use-module (gnu packages gcc)
827d2891	24	#:use-module (gnu packages base)
bdb36958	25	#:use-module (gnu packages commencement)
827d2891 LC	26	#:use-module (gnu packages linux)
	27	#:use-module (guix packages)
	28	#:use-module (guix download)
	29	#:use-module (guix utils)
	30	#:use-module (guix build-system gnu)
	31	#:use-module (guix build-system trivial)
	32	#:use-module (srfi srfi-1)
	33	#:use-module (srfi srfi-26)
264218a4 LC	34	#:use-module (ice-9 match)
	35	#:export (cross-binutils
	36	cross-libc
	37	cross-gcc))
827d2891	38
c92f1c0a LC	39	(define %xgcc
	40	;; GCC package used as the basis for cross-compilation. It doesn't have to
	41	;; be 'gcc' and can be a specific variant such as 'gcc-4.8'.
	42	gcc)
	43
827d2891 LC	44	(define (cross p target)
827d2891 LC	45	(package (inherit p)
827d2891 LC	46	(name (string-append (package-name p) "-cross-" target))
	47	(arguments
	48	(substitute-keyword-arguments (package-arguments p)
	49	((#:configure-flags flags)
	50	`(cons ,(string-append "--target=" target)
	51	,flags))))))
	52
1306b0b0 LC	53	(define (package-with-patch original patch)
	54	"Return package ORIGINAL with PATCH applied."
	55	(package (inherit original)
	56	(source (origin (inherit (package-source original))
	57	(patches (list patch))))))
	58
47e74d6e LC	59	(define (cross-binutils target)
	60	"Return a cross-Binutils for TARGET."
	61	(let ((binutils (package (inherit binutils)
	62	(arguments
	63	(substitute-keyword-arguments (package-arguments
	64	binutils)
	65	((#:configure-flags flags)
	66	;; Build with `--with-sysroot' so that ld honors
	67	;; DT_RUNPATH entries when searching for a needed
	68	;; library. This works because as a side effect
	69	;; `genscripts.sh' sets `USE_LIBPATH=yes', which tells
	70	;; elf32.em to use DT_RUNPATH in its search list.
c8fa51f2 LC	71	;; See <http://sourceware.org/ml/binutils/2013-05/msg00312.html>.
	72	;;
	73	;; In theory choosing / as the sysroot could lead ld
	74	;; to pick up native libs instead of target ones. In
	75	;; practice the RUNPATH of target libs only refers to
	76	;; target libs, not native libs, so this is safe.
	77	`(cons "--with-sysroot=/" ,flags)))))))
1306b0b0 LC	78
	79	;; For Xtensa, apply Qualcomm's patch.
	80	(cross (if (string-prefix? "xtensa-" target)
	81	(package-with-patch binutils
	82	(search-patch
	83	"ath9k-htc-firmware-binutils.patch"))
	84	binutils)
	85	target)))
827d2891	86
cdb4b4b3 LC	87	(define (cross-gcc-arguments target libc)
	88	"Return build system arguments for a cross-gcc for TARGET, using LIBC (which
	89	may be either a libc package or #f.)"
b4469d8c LC	90	;; Set the current target system so that 'glibc-dynamic-linker' returns the
	91	;; right name.
	92	(parameterize ((%current-target-system target))
2a1552c6 LC	93	;; Disable stripping as this can break binaries, with object files of
	94	;; libgcc.a showing up as having an unknown architecture. See
	95	;; <http://lists.fedoraproject.org/pipermail/arm/2010-August/000663.html>
	96	;; for instance.
	97	(let ((args `(#:strip-binaries? #f
c92f1c0a	98	,@(package-arguments %xgcc))))
2a1552c6 LC	99	(substitute-keyword-arguments args
	100	((#:configure-flags flags)
	101	`(append (list ,(string-append "--target=" target)
	102	,@(if libc
8fd857f5 MR	103	`( ;; Disable libcilkrts because it is not
	104	;; ported to GNU/Hurd.
	105	"--disable-libcilkrts")
2a1552c6 LC	106	`( ;; Disable features not needed at this stage.
2a1552c6 LC	107	"--disable-shared" "--enable-static"
cdb4b4b3	108
2a1552c6 LC	109	;; Disable C++ because libstdc++'s configure
	110	;; script otherwise fails with "Link tests are not
	111	;; allowed after GCC_NO_EXECUTABLES."
	112	"--enable-languages=c"
cdb4b4b3	113
2a1552c6 LC	114	"--disable-threads" ;libgcc, would need libc
	115	"--disable-libatomic"
	116	"--disable-libmudflap"
	117	"--disable-libgomp"
	118	"--disable-libssp"
	119	"--disable-libquadmath"
	120	"--disable-decimal-float" ;would need libc
8fd857f5	121	"--disable-libcilkrts"
2a1552c6	122	)))
cdb4b4b3	123
2a1552c6 LC	124	,(if libc
	125	flags
	126	`(remove (cut string-match "--enable-languages.*" <>)
	127	,flags))))
	128	((#:make-flags flags)
	129	(if libc
	130	`(let ((libc (assoc-ref %build-inputs "libc")))
	131	;; FLAGS_FOR_TARGET are needed for the target libraries to receive
	132	;; the -Bxxx for the startfiles.
	133	(cons (string-append "FLAGS_FOR_TARGET=-B" libc "/lib")
	134	,flags))
	135	flags))
	136	((#:phases phases)
	137	(let ((phases
	138	`(alist-cons-after
	139	'install 'make-cross-binutils-visible
	140	(lambda* (#:key outputs inputs #:allow-other-keys)
	141	(let* ((out (assoc-ref outputs "out"))
	142	(libexec (string-append out "/libexec/gcc/"
	143	,target))
	144	(binutils (string-append
	145	(assoc-ref inputs "binutils-cross")
	146	"/bin/" ,target "-"))
	147	(wrapper (string-append
	148	(assoc-ref inputs "ld-wrapper-cross")
	149	"/bin/" ,target "-ld")))
	150	(for-each (lambda (file)
	151	(symlink (string-append binutils file)
	152	(string-append libexec "/"
	153	file)))
	154	'("as" "nm"))
	155	(symlink wrapper (string-append libexec "/ld"))
	156	#t))
	157	(alist-replace
	158	'install
	159	(lambda _
	160	;; Unlike our 'strip' phase, this will do the right thing
	161	;; for cross-compilers.
	162	(zero? (system* "make" "install-strip")))
	163	,phases))))
	164	(if libc
	165	`(alist-cons-before
	166	'configure 'set-cross-path
	167	(lambda* (#:key inputs #:allow-other-keys)
	168	;; Add the cross Linux headers to CROSS_CPATH, and remove them
	169	;; from CPATH.
	170	(let ((libc (assoc-ref inputs "libc"))
aa27987f	171	(linux (assoc-ref inputs "xlinux-headers")))
2a1552c6 LC	172	(define (cross? x)
	173	;; Return #t if X is a cross-libc or cross Linux.
	174	(or (string-prefix? libc x)
	175	(string-prefix? linux x)))
cdb4b4b3	176
2a1552c6 LC	177	(setenv "CROSS_CPATH"
	178	(string-append libc "/include:"
	179	linux "/include"))
	180	(setenv "CROSS_LIBRARY_PATH"
	181	(string-append libc "/lib"))
cdb4b4b3	182
2a1552c6 LC	183	(let ((cpath (search-path-as-string->list
	184	(getenv "CPATH")))
	185	(libpath (search-path-as-string->list
	186	(getenv "LIBRARY_PATH"))))
	187	(setenv "CPATH"
	188	(list->search-path-as-string
	189	(remove cross? cpath) ":"))
	190	(setenv "LIBRARY_PATH"
	191	(list->search-path-as-string
	192	(remove cross? libpath) ":"))
	193	#t)))
	194	,phases)
	195	phases)))))))
cdb4b4b3	196
1306b0b0 LC	197	(define (cross-gcc-patches target)
	198	"Return GCC patches needed for TARGET."
	199	(cond ((string-prefix? "xtensa-" target)
	200	;; Patch by Qualcomm needed to build the ath9k-htc firmware.
	201	(list (search-patch "ath9k-htc-firmware-gcc.patch")))
	202	(else '())))
	203
827d2891 LC	204	(define* (cross-gcc target
	205	#:optional (xbinutils (cross-binutils target)) libc)
	206	"Return a cross-compiler for TARGET, where TARGET is a GNU triplet. Use
	207	XBINUTILS as the associated cross-Binutils. If LIBC is false, then build a
	208	GCC that does not target a libc; otherwise, target that libc."
c92f1c0a	209	(package (inherit %xgcc)
827d2891 LC	210	(name (string-append "gcc-cross-"
	211	(if libc "" "sans-libc-")
	212	target))
c92f1c0a	213	(source (origin (inherit (package-source %xgcc))
01eafd38	214	(patches
1421afa9	215	(append
c92f1c0a	216	(origin-patches (package-source %xgcc))
1421afa9 MW	217	(cons (search-patch "gcc-cross-environment-variables.patch")
1421afa9 MW	218	(cross-gcc-patches target))))))
a49c57a7 LC	219
	220	;; For simplicity, use a single output. Otherwise libgcc_s & co. are not
	221	;; found by default, etc.
	222	(outputs '("out"))
	223
827d2891 LC	224	(arguments
	225	`(#:implicit-inputs? #f
	226	#:modules ((guix build gnu-build-system)
	227	(guix build utils)
	228	(ice-9 regex)
	229	(srfi srfi-1)
	230	(srfi srfi-26))
827d2891	231
cdb4b4b3	232	,@(cross-gcc-arguments target libc)))
0de71c23 LC	233
0de71c23 LC	234	(native-inputs
4a740d0f LC	235	`(("ld-wrapper-cross" ,(make-ld-wrapper
	236	(string-append "ld-wrapper-" target)
	237	#:target target
	238	#:binutils xbinutils))
	239	("binutils-cross" ,xbinutils)
827d2891 LC	240
	241	;; Call it differently so that the builder can check whether the "libc"
	242	;; input is #f.
	243	("libc-native" ,@(assoc-ref %final-inputs "libc"))
	244
	245	;; Remaining inputs.
c92f1c0a	246	,@(let ((inputs (append (package-inputs %xgcc)
827d2891 LC	247	(alist-delete "libc" %final-inputs))))
	248	(if libc
	249	`(("libc" ,libc)
aa27987f LC	250	("xlinux-headers" ;the target headers
	251	,@(assoc-ref (package-propagated-inputs libc)
	252	"linux-headers"))
827d2891	253	,@inputs)
17bb886f LC	254	inputs))))
17bb886f LC	255
0de71c23 LC	256	(inputs '())
0de71c23 LC	257
17bb886f LC	258	;; Only search target inputs, not host inputs.
	259	(search-paths
	260	(list (search-path-specification
	261	(variable "CROSS_CPATH")
af070955	262	(files '("include")))
17bb886f LC	263	(search-path-specification
17bb886f LC	264	(variable "CROSS_LIBRARY_PATH")
af070955	265	(files '("lib" "lib64")))))
17bb886f	266	(native-search-paths '())))
827d2891 LC	267
	268	(define* (cross-libc target
	269	#:optional
	270	(xgcc (cross-gcc target))
	271	(xbinutils (cross-binutils target)))
	272	"Return a libc cross-built for TARGET, a GNU triplet. Use XGCC and
	273	XBINUTILS and the cross tool chain."
	274	(define xlinux-headers
	275	(package (inherit linux-libre-headers)
	276	(name (string-append (package-name linux-libre-headers)
	277	"-cross-" target))
	278	(arguments
0d5a559f LC	279	(substitute-keyword-arguments
	280	`(#:implicit-cross-inputs? #f
	281	,@(package-arguments linux-libre-headers))
827d2891 LC	282	((#:phases phases)
	283	`(alist-replace
	284	'build
	285	(lambda _
	286	(setenv "ARCH" ,(system->linux-architecture target))
	287	(format #t "`ARCH' set to `~a' (cross compiling)~%" (getenv "ARCH"))
	288
	289	(and (zero? (system* "make" "defconfig"))
	290	(zero? (system* "make" "mrproper" "headers_check"))))
	291	,phases))))
0de71c23 LC	292	(native-inputs `(("cross-gcc" ,xgcc)
	293	("cross-binutils" ,xbinutils)
	294	,@(package-native-inputs linux-libre-headers)))))
827d2891 LC	295
	296	(package (inherit glibc)
	297	(name (string-append "glibc-cross-" target))
	298	(arguments
	299	(substitute-keyword-arguments
0d5a559f LC	300	`(;; Disable stripping (see above.)
	301	#:strip-binaries? #f
	302
	303	;; This package is used as a target input, but it should not have
	304	;; the usual cross-compilation inputs since that would include
	305	;; itself.
	306	#:implicit-cross-inputs? #f
	307
827d2891 LC	308	,@(package-arguments glibc))
	309	((#:configure-flags flags)
	310	`(cons ,(string-append "--host=" target)
	311	,flags))
	312	((#:phases phases)
	313	`(alist-cons-before
	314	'configure 'set-cross-linux-headers-path
	315	(lambda* (#:key inputs #:allow-other-keys)
0d5a559f	316	(let ((linux (assoc-ref inputs "linux-headers")))
827d2891 LC	317	(setenv "CROSS_CPATH"
	318	(string-append linux "/include"))
	319	#t))
	320	,phases))))
a4627d49	321
c6d33a9d	322	;; Shadow the native "linux-headers" because glibc's recipe expects the
0d5a559f LC	323	;; "linux-headers" input to point to the right thing.
	324	(propagated-inputs `(("linux-headers" ,xlinux-headers)))
	325
12b0dbd4 LC	326	;; FIXME: 'static-bash' should really be an input, not a native input, but
	327	;; to do that will require building an intermediate cross libc.
	328	(inputs '())
	329
0de71c23 LC	330	(native-inputs `(("cross-gcc" ,xgcc)
0de71c23 LC	331	("cross-binutils" ,xbinutils)
12b0dbd4	332	,@(package-inputs glibc) ;FIXME: static-bash
0de71c23	333	,@(package-native-inputs glibc)))))
827d2891 LC	334
	335	\f
	336	;;;
	337	;;; Concrete cross toolchains.
	338	;;;
	339
	340	(define-public xgcc-mips64el
6ee01481 LC	341	(let* ((triplet "mips64el-linux-gnuabi64") ;N64 ABI
	342	(xgcc (cross-gcc triplet
	343	(cross-binutils triplet)
	344	(cross-libc triplet))))
	345	;; Don't attempt to build this cross-compiler on i686;
	346	;; see <http://bugs.gnu.org/19598>.
	347	(package (inherit xgcc)
9fdd80e8 LC	348	(supported-systems (fold delete
	349	(package-supported-systems xgcc)
	350	'("mips64el-linux" "i686-linux"))))))
827d2891	351
a5b60e3c MR	352	(define-public xgcc-avr
	353	;; AVR cross-compiler, used to build AVR-Libc.
	354	(let ((triplet "avr"))
	355	(cross-gcc triplet
	356	(cross-binutils triplet))))
	357
9d307460 LC	358	(define-public xgcc-xtensa
	359	;; Bare-bones Xtensa cross-compiler, used to build the Atheros firmware.
	360	(cross-gcc "xtensa-elf"))
	361
3f00ff8b	362	(define-public xgcc-armhf
9fdd80e8 LC	363	(let* ((triplet "arm-linux-gnueabihf")
	364	(xgcc (cross-gcc triplet
	365	(cross-binutils triplet)
	366	(cross-libc triplet))))
	367	(package (inherit xgcc)
	368	(supported-systems (delete "armhf-linux" %supported-systems)))))
3f00ff8b	369
827d2891 LC	370	;; (define-public xgcc-armel
	371	;; (let ((triplet "armel-linux-gnueabi"))
	372	;; (cross-gcc triplet
	373	;; (cross-binutils triplet)
	374	;; (cross-libc triplet))))