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gnu: Add cross tool chain.

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* gnu/packages/cross-base.scm: New file.
* gnu/packages/patches/gcc-cross-environment-variables.patch: New file.
* Makefile.am (MODULES): Add cross-base.scm.
  (dist_patch_DATA): Add gcc-cross-environment-variables.patch.
* gnu/packages/base.scm (gcc-4.7): Use `LDFLAGS_FOR_TARGET' instead of
  `LDFLAGS_FOR_BUILD', and use `-B' instead of `-L'.
* gnu/packages/bootstrap.scm (glibc-dynamic-linker): Add case for
  "mips64el-linux".
This commit is contained in:
Ludovic Courtès 2013-02-27 09:38:11 +01:00
parent aaf4cb20ad
commit 827d28914a
5 changed files with 272 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
Makefile.am
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@ -66,6 +66,7 @@ MODULES = \
gnu/packages/check.scm \
gnu/packages/compression.scm \
gnu/packages/cpio.scm \
gnu/packages/cross-base.scm \
gnu/packages/curl.scm \
gnu/packages/cyrus-sasl.scm \
gnu/packages/dejagnu.scm \
@ -185,6 +186,7 @@ dist_patch_DATA = \
gnu/packages/patches/flac-fix-memcmp-not-declared.patch \
gnu/packages/patches/flex-bison-tests.patch \
gnu/packages/patches/gawk-shell.patch \
gnu/packages/patches/gcc-cross-environment-variables.patch \
gnu/packages/patches/gettext-gets-undeclared.patch \
gnu/packages/patches/glib-tests-desktop.patch \
gnu/packages/patches/glib-tests-homedir.patch \

4
gnu/packages/base.scm
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@ -412,8 +412,8 @@ BFD (Binary File Descriptor) library, `gprof', `nm', `strip', etc.")
#:make-flags
(let ((libc (assoc-ref %build-inputs "libc")))
`(,@(if libc
(list (string-append "LDFLAGS_FOR_BUILD="
"-L" libc "/lib "
(list (string-append "LDFLAGS_FOR_TARGET="
"-B" libc "/lib "
"-Wl,-dynamic-linker "
"-Wl," libc
,(glibc-dynamic-linker)))

1
gnu/packages/bootstrap.scm
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@ -134,6 +134,7 @@ check whether everything is alright."
"Return the name of Glibc's dynamic linker for SYSTEM."
(cond ((string=? system "x86_64-linux") "/lib/ld-linux-x86-64.so.2")
((string=? system "i686-linux") "/lib/ld-linux.so.2")
((string=? system "mips64el-linux") "/lib/ld.so.1")
(else (error "dynamic linker name not known for this system"
system))))

243
gnu/packages/cross-base.scm Normal file
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@ -0,0 +1,243 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2013 Ludovic Courtès <ludo@gnu.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 base)
#: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))
(define (cross p target)
(package (inherit p)
(location (source-properties->location (current-source-location)))
(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 cross-binutils
(cut cross binutils <>))
(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."
(define args
;; Get the arguments as if we were building for TARGET. In particular, we
;; want `glibc-dynamic-linker' to return the right thing.
(parameterize ((%current-system (gnu-triplet->nix-system target)))
(package-arguments gcc-4.7)))
(package (inherit gcc-4.7)
(name (string-append "gcc-cross-"
(if libc "" "sans-libc-")
target))
(arguments
`(#:implicit-inputs? #f
#:modules ((guix build gnu-build-system)
(guix build utils)
(ice-9 regex)
(srfi srfi-1)
(srfi srfi-26))
#:patches (list (assoc-ref %build-inputs "patch/cross-env-vars"))
,@(substitute-keyword-arguments args
((#:configure-flags flags)
`(append (list ,(string-append "--target=" target)
,@(if libc
'()
`( ;; 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-libmudflap"
"--disable-libgomp"
"--disable-libssp"
"--disable-libquadmath"
"--disable-decimal-float" ; would need libc
)))
,(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 "-")))
(for-each (lambda (file)
(symlink (string-append binutils file)
(string-append libexec "/"
file)))
'("as" "ld" "nm"))
#t))
,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
"libc/cross-linux-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)))
((#:strip-binaries? _)
;; 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.
#f))))
(inputs
`(("patch/cross-env-vars"
,(search-patch "gcc-cross-environment-variables.patch"))
("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 gcc-4.7)
(alist-delete "libc" %final-inputs))))
(if libc
`(("libc" ,libc)
,@inputs)
inputs))))))
(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 (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))))
(inputs `(("cross-gcc" ,xgcc)
("cross-binutils" ,xbinutils)
,@(package-inputs linux-libre-headers)))))
(package (inherit glibc)
(name (string-append "glibc-cross-" target))
(arguments
(substitute-keyword-arguments
`(#:strip-binaries? #f ; disable stripping (see above)
,@(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 "cross-linux-headers")))
(setenv "CROSS_CPATH"
(string-append linux "/include"))
#t))
,phases))))
(propagated-inputs `(("cross-linux-headers" ,xlinux-headers)))
(inputs `(("cross-gcc" ,xgcc)
("cross-binutils" ,xbinutils)
,@(package-inputs glibc)))))
;;;
;;; Concrete cross toolchains.
;;;
(define-public xgcc-mips64el
(let ((triplet "mips64el-linux-gnu"))
(cross-gcc triplet
(cross-binutils triplet)
(cross-libc triplet))))
;; (define-public xgcc-armel
;; (let ((triplet "armel-linux-gnueabi"))
;; (cross-gcc triplet
;; (cross-binutils triplet)
;; (cross-libc triplet))))

24
gnu/packages/patches/gcc-cross-environment-variables.patch Normal file
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@ -0,0 +1,24 @@
Search path environment variables for cross-compilers. See the discussion
at <http://gcc.gnu.org/ml/gcc/2013-02/msg00124.html>.
--- gcc-4.7.2/gcc/incpath.c 2012-01-27 00:34:58.000000000 +0100
+++ gcc-4.7.2/gcc/incpath.c 2013-02-12 10:11:27.000000000 +0100
@@ -452,7 +452,7 @@ register_include_chains (cpp_reader *pfi
/* CPATH and language-dependent environment variables may add to the
include chain. */
- add_env_var_paths ("CPATH", BRACKET);
+ add_env_var_paths ("CROSS_CPATH", BRACKET);
add_env_var_paths (lang_env_vars[idx], SYSTEM);
target_c_incpath.extra_pre_includes (sysroot, iprefix, stdinc);
--- gcc-4.7.2/gcc/system.h 2012-02-17 00:16:28.000000000 +0100
+++ gcc-4.7.2/gcc/system.h 2013-02-12 10:22:17.000000000 +0100
@@ -1023,4 +1023,6 @@ helper_const_non_const_cast (const char
#define DEBUG_VARIABLE
#endif
+#define LIBRARY_PATH_ENV "CROSS_LIBRARY_PATH"
+
#endif /* ! GCC_SYSTEM_H */